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Fluke 1595A Thermometer User Manual

1. Setting lt name gt lt value gt type or options Type TYPE PRTITHERIRES Calibration Date CAL_DATE string lt yyyy gt lt mm gt lt dd gt Nominal Current NOM_CURR decimal number Maximum Current MAX_CURR decimal number PRT type settings Maximum Temperature MAX_TEMP decimal number dependent on Unit setting Conversion CONV ITS_90IPT_100ICVD_ABCICVD_ALPHIPOLYINONE ITS 90 conversion settings RTPW RTPW decimal number High Subrange HIGH_SUB NONEI516171819110111 Low Subrange LOW_SUB NONEI112131415 ITS 90 subrange settings A1 A11 A1 A11 exponential number B1 B9 B1 B9 exponential number C1 C5 C6 C7 C1 C5 C6 C7 exponential number D D exponential number PT 100 conversion settings RO RO decimal number CVD ABC conversion settings RO RO decimal number A A exponential number B B exponential number Cc C exponential number CVD ALPHA conversion settings RO RO decimal number ALPHA ALPH exponential number DELTA DELT exponential number BETA BETA exponential number Polynomial conversion settings 86 8 7 3 60 8 7 3 61 Remote Operation Interface Commands CO C7 CO C7 exponential number Thermistor type settings Maximum Temperature MAX_TEMP decimal number dependent on Unit setting Conversion CONV R_POLYIT_POLYINONE R T polynomial conversion settings BO B3 BO B3 exponential number T R p
2. Probe Type Reference Resistance Sensing Current 25 Q SPRT 250 1 0 mA 100 Q PRT or RTD 100 Q 1 0 mA 2 5 Q SPRT 100 5 0 mA 0 25 Q SPRT 10 14 14 mA 1000 Q PRT or RTD 10kQ 0 05 mA Thermistors 2 kQ to 20 kQ 10 kQ 0 01 mA Thermistors 20 kQ to 100 kQ 10 kQ 0 002 mA SENSING CURRENT the excitation current used for measurement By default it is set to the nominal current value entered in the probe s definition However if the user enters a different sensing current the new value will supersede the probe definition The 1 x POWER F2 function key automatically sets Sensing Current to the Nominal Current value estab lished in the probe definition 2 x POWER F3 sets Sensing Current to 1 4142 times the nominal current In order to protect the device being measured the current is limited by the Maximum Current setting in the probe definition STANDBY CURRENT allows current to pass through a probe or resistor even when it is not being actively measured This is useful for keeping the probe self heated so it will need less time to settle when measured The magnitude of the standby current is the same as the Sensing Current as long as the Sensing Current is no greater than 2 mA If the Sensing Current is greater than 2 mA the channel s standby current will remain off regardless of the Standby Current setting Important All currents are switched off when Measurement is stopped Also when Scan Enable is on see Scan Enab
3. Remote Operation Interface Commands Command CAL DATE Function Sets the instrument s date of calibration Associated Setting or Function screen Calibration Date Calibration Parameters CAL PAR LIN lt n gt Sets a calibration linearity correction parameter Linearity C lt n gt Calibration Parameters CAL PAR RES Sets the calibrated resistance of an internal Q Resistor Calibration reference resistor Parameters CAL PAR ZERO Sets the calibration zero correction parameter Zero Correction Calibration Parameters CALC lt n gt AVER ALL Reads a channel s statistical values Main Screen CALC lt n gt AVER AVER Reads a channel s statistical mean Mean Main Screen CALC lt n gt AVER CLEA Clears a channel s statistics RESET STATISTICS Main Screen CALC AVER COUN Sets the statistics Sample Count setting Sample Count Statistics Settings CALC lt n gt AVER MAX Reads a channel s statistical maximum Maximum Main Screen CALC lt n gt AVER MIN Reads a channel s statistical minimum Minimum Main Screen CALC lt n gt AVER SDEV Reads a channel s statistical sample standard Std Dev Main Screen deviation CALC lt n gt AVER SEM Reads a channel s statistical standard error of the SE of Mean Main Screen mean CALC lt n gt AVER SPR Reads a channel s statistical spread Spread Main Screen CALC lt n gt AVER SSIZ Reads a channel s s
4. Calibration 1594A 1595A Super Thermometer Technical Guide 159X tgeng0000 Limited Warranty amp Limitation of Liability Each product from Fluke Corporation Fluke is warranted to be free from defects in material and work manship under normal use and service The warranty period is one year s for the thermometer The warranty period begins on the date of the shipment Parts product repairs and services are warranted for 90 days The warranty extends only to the original buyer or end user customer of a Fluke authorized reseller and does not apply to fuses disposable batteries or to any other product which in Fluke s opinion has been misused altered neglected or damaged by accident or abnormal conditions of operation or handling Fluke warrants that software will operate substantially in accordance with its functional specifications for 90 days and that it has been properly recorded on non defective media Fluke does not warrant that software will be error free or operate without interruption Fluke does not warrant calibrations on the Super Thermometer Fluke authorized resellers shall extend this warranty on new and unused products to end user customers only but have no authority to extend a greater or different warranty on behalf of Fluke Warranty support is avail able if product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable interna tional price Fluke reserves the right to in
5. Figure 3 Front Panel Display The default display language is English The display can be shown in the following language options English Chinese Spanish Japanese German French and Russian The display language can be changed in the User Settings screen The User settings screen is displayed in English regardless of language setting when using a shortcut key sequence that is entered from the Measure ment screen In the Measurement screen press and hold the EXIT key to return to the Measurement screen press and release the ENTER key and then press the SETUP key Use the Up Down arrow keys to select the LANGUAGE configuration field and then use the Left Right arrow keys to choose the intended language Pressing the ENTER key saves the new selection For all other display configuration settings see Section 5 7 4 DISPLAY MENU F4 on page 46 19 1594A 1595A Super Thermometer Rear Panel Features 4 3 Rear Panel Features FLUKE CORPORATION MADE IN USA www fluke com SERIAL LABEL CER S Gwe S A NO USER SERVICEABLE PARTS US PATENTS 5 964 625 OTHER PATENTS PENDING A 100 230V 60W 50 60 Hz T 2AT 250V gt LAN SCANNER COMPUTER RS 232 IOI IEEE 488 2590 MULTIPLEXER E rara ma L aj W gt s m y x Figure 4 Rear view 4 3 3 1 External Resistor Inputs Rs1 Rs2 Figure 5 External Resistor Inputs The Rs1 and Rs2 external reference resistor connections are
6. AUTOMATIC SCALING determines whether the scale of the vertical axis is set automatically based on the data in the graph ON or if the scale is fixed at the Vertical Scale value OFF The default value is ON VERTICAL SPAN sets the scale of the vertical axis of the combined graph when Automatic Scaling is OFF The setting has a range of 1 0E 6 to 1 0E6 The default value is 0 1 49 1594A 1595A Super Thermometer Main Menu 50 A 5 7 4 5 5 7 5 5 7 5 1 TRACE controls whether a measurement point is plotted with a line that connects to the previous point or as a separate dot The options are LINE and DOT The default value is DOT Important When Time Span is large multiple points may be combined and drawn as a vertical line to conserve memory TEMPERATURE UNIT F5 The Temperature Unit screen allows the user to select the unit for displayed temperature measurements The options are C K and F F will not be available if SI Unit Lock is set to ON in the Calibration Parameters screen of the Calibration menu see Section 5 7 7 2 CALIBRATION F5 on page 55 The default value is C SYSTEM MENU F5 SYSTEM MENU PRESS A FUNCTION KEY BELOW MANUFACTURER FLUKE CORPORATION MODEL 159X SERIAL 0 FIRMHARE 1 00A 1 0 0 CALIBRATION DATE 2009 09 25 YYYY HM DD Se CS CE f gt A Figure 15 System Menu Screen The System Menu contains general system settings such as time and date remote interf
7. Example query response VAR 8 7 3 67 8 7 3 68 8 7 3 69 8 7 3 70 Remote Operation Interface Commands Sets the resistor definition assigned to a front reference resistor input Use the command INP REAR lt n gt RS IDEN to assign a resistor definition to a rear Rs input Suffix lt n gt specifies the front input channel number and must be either 2 or 4 Parameter lt id gt must be either the ID of a resistor definition in the Resistor Library VAR variable or NONE Enclosing quotations marks are optional If lt id gt does not match the ID of a resistor definition in the Resistor Library or an allowed option error 224 Tllegal parameter value is generated in the error queue The response to the query form is the ID of the resistor enclosed in quotation marks if a valid resistor ID is as signed to the input If the resistor assignment is variable or none the response is VAR or NONE respec tively without quotation marks A channel s Calculation setting will be changed from temperature to resistance see Section 8 7 3 27 CALC lt n gt TYPE TEMP RES RAT on page 80 if its Reference Resistor Rs setting was set to the speci fied input and the resistor assignment for the input is set to variable A channel s Reference Resistor Rs setting will be changed from the specified input to the internal 100 2 resistor if the resistor assignment for the input is being set to none INP RS NEXT
8. LINEFEED determines whether a linefeed character ASCII code 10 is transmitted at the end of every message USB F2 The USB function key displays the following configuration field PORT ENABLE enables and disables the rear USB port for remote communications with a computer The front USB port used for an external USB memory device is always enabled NETWORK F3 The Network function key opens a screen allowing the user to configure the Network port settings The network port implements a 10 100 Base T Ethernet network interface It supports the protocols TCP IP DHCP and HTML The port is disabled by default and must be enabled to be used The user may select DHCP or specify a static network address The network port may be used for remote control of the Super Thermometer by a PC and interface to network software such as Telnet or a COM port redirector driver In this mode the network port accepts a raw TCP connection on TCP port number 5025 The network port also provides a simple HTML web page interface to the Super Thermometer to allow remote monitoring via a web browser The following are the configuration fields HARDWARE MAC shows the hardware MAC address of the network port It cannot be changed DHCP ENABLE determines whether the static IP address is used or is assigned dynamically by a server The default option is ON dynamic CAUTION When DHCP is enabled do not remove the Ethernet cable and turn the p
9. The rear USB device port Type B labeled COMPUTER allows the Super Thermometer to be controlled by a computer as a USB peripheral The USB port must be enabled before communication Use the following steps to enable the rear USB port 8 5 8 6 Remote Operation Configuring the IEEE 488 Port 1 Press the MENU key 2 Select the SYSTEM MENU F5 function key 3 Select the REMOTE INTERFACE F2 function key 4 Select the USB F2 function key 5 Use the Left Right arrow keys to change PORT ENABLE to ON enable Before plugging the USB communication cable from the Super Thermometer into a computer make sure the computer is connected to the internet to allow the USB driver to download and install in the computer automatically If an internet connection is not available the computer will detect the Super Thermometer as an unknown USB device and will prompt for a driver Insert the DVD provided with the Super Thermometer into the computer and browse into the USB driver folder When the driver is selected the PC will automatically load it The user may be prompted a second time to browse to the USB driver folder and repeat the process When the Super Thermometer is recognized by the computer it is ready for communication Search in the computer s operating system to find the com port address assigned to the USB port connected to the Super Thermometer Once the com port address is identified remote operation commands can be sent using
10. lt n gt Reads or sets the statistics fields memory set for display Recall Memory Field Settings DISP FIEL MEM lt n gt FEED lt n gt lt s gt DISP LANG Reads or sets a statistics field setting of a statistics fields memory set Sets the display Language setting Field lt n gt Field Settings Language Display Settings DISP TEMP DIG Sets the display Temperature Resolution setting Temperature Resolution Display Settings DISP WARN DUE Sets the display Rs Due Warning enable Rs Due Warning Display Settings DISP WARN ITS Sets the display ITS 90 Subrange Warning enable ITS 90 Subrange Warning Display Settings FETC Reads a channel s latest measurement 71 1594A 1595A Super Thermometer Interface Commands 72 Command INIT CONT Function Starts or stops measurement Associated Setting or Function screen START STOP MEASURING Main Screen INIT STOP BEEP Sets the stop timer s Timer Beep setting Stop Timer Enable Timing Settings INIT STOP DUR Sets the stop timer s Timer Duration setting Stop Timer Duration Timing Settings INIT STOP STAT Sets the Stop Timer Enable Stop Timer Enable Timing Settings INIT STOP TIME Reads the stop timer s time remaining Stop Timer time remaining Main Screen INP lt n gt CURR Sets a channel s Sensing Current setting Sensing Current Channel Settings INP lt
11. 1 Press and hold the EXIT key to go to the Measurement screen 2 Ifnecessary suspend measurement by pressing the STOP MEASUREMENT Fl function key 3 Using the instructions in the Getting Started section connect a temperature probe to one of the measurement input channels 4 Press the SETUP key to open the Channel Setup screen Use the Up Down arrow keys to highlight the channel to which the probe is connected Scanner channels if available are identified with a S1 scanner 1 or S2 scanner 2 prefix added to the channel number 5 Once the channel is highlighted use the following steps to assign a probe definition to the selected channel a b c Select the ASSIGN PROBE F1 function key to open the Probe Library Scroll through the list of probe definitions using the Up Down arrow keys to locate the probe s definition If the probe definition has not been previously entered select ADD PROBE F1 to begin the process of creating a probe definition see Section 5 7 2 PROBE MENU F2 on page 34 for more information When the probe definition is selected press the ENTER key to assign the selected probe definition to the channel and return to the Channel Setup menu 6 Select the CHANNEL SETTINGS F2 function key to configure the measurement channel using the following steps a Select the desired reference resistor Rs to be used for the measurement by pressing the Left Right arrow keys and pressing ENTER
12. 2 2 5 2 General Specifications Table 8 General Specifications Introduction and Specifications Specifications Warm up period 30 minutes Measurement range Measurement current range 0 Q to 500 kQ 0 001 mA to 20 mA Measurement current reversal interval Sample period of 1 second or 2 seconds Sample period of 5 second or 10 seconds 0 2 second 1 2 second Standby current range 0 001 mA to 2 mA AC power 100 V to 230 V 10 50 or 60 Hz Fuse Rating 2A T 250V Specified operating temperature 15 C to 30 C Absolute operating temperature 5 C to 40 C Storage temperature 0 C to 40 C Operating relative humidity 5 C to 30 C 10 to 70 Operating relative humidity 30 C to 40 C Storage relative humidity 10 to 50 0 to 95 non condensing Maximum operating altitude 3000 m Dimensions Height Width Depth with handles Depth without handles Weight 147 mm 5 8 in 439 mm 173 in 447 mm 17 6 if 406 mm 16 0 in 7 3 kg 16 0 Ib Applying the Specifications Introduction The purpose of this section is to help the user apply the specifications in measurement scenarios for which the Super Thermometer was designed The following uncertainty calculation examples may not include all uncertainties that are present in a measurement Be sure to follow current best practices in uncertainty analysis to correctly calculate
13. Example command SYST PASS NEW 1234 9999 Changes the password If lt current password gt is incorrect error 221 Settings conflict is generated in the error queue SYST PON MIN Returns the time in minutes since power on SYST TIME lt hour gt lt minute gt lt second gt Query form SYST TIME Example query response 23 59 59 Password protection Time Date Protection Sets the Time of the system clock SYST TIME DAYL OFF NAM EUR Example command SYST TIME DAYL NAM 99 1594A 1595A Super Thermometer Interface Commands 100 8 7 3 129 8 7 3 130 8 7 3 131 8 7 3 132 8 7 3 133 Query form SYST TIME DAYL Password protection Time Date Protection Alternate parameter DEF Sets the Daylight Saving automatic adjust setting see Section 5 7 5 1 TIME DATE F1 on page 50 Allowed parameter values are OFF for no automatic daylight saving adjustment NAM for adjustment accord ing to the schedule used in North America the United States Canada and Mexico and EUR for adjustment according to the schedule used in Europe The default setting is OFF TEST CURR CONF lt channel gt lt current gt lt polarity gt Query form TEST CURR CONF Example query response 2 1 0 0 Sets the configuration of the sensing current test see Section 9 Calibration on page 103 Parameter lt channel gt may be through 4 referring to front channels through 4 Parameter lt current gt is the driving current P
14. It is equivalent to measuring the ITS 90 W value and using it to calculate temperature The total uncertainty of this measurement is based on six uncorrelated uncertainties These uncertainties are e Resistance ratio accuracy of the 1595A at 157 C e Measurement noise at 157 C e Resistance ratio accuracy of the 1595A at 0 01 C triple point of water e Measurement noise at 0 01 C e Reference resistor drift e Uncertainty of the triple point of water cell The following demonstrate how to calculate and combine the listed uncertainties Resistance Ratio Accuracy at 157 C The resistance of the SPRT when measuring at 157 C is 41 1 Q The ratio of this resistance against the 25 Q reference resistor is 1 644 From the resistance ratio accuracy specifications of the 1595A the standard uncertainty k 1 when measuring a resistance ratio of 1 644 is 0 08 ppm This is converted to temperature by dividing 0 08 ppm by 1 0 x 10 and then multiplying by 1 644 The result is then divided by W sensitiv ity dW dT at 157 C which is 0 0038 found on the SPRT calibration report see tip below The final result is 0 000035 C Measurement Noise at 157 C Random error due to measurement noise must be included as an uncertainty During measurement at 157 C it is observed that the standard error of the mean is 0 000040 C Note The user must monitor measurement noise and use the actual measured measurement noise in the uncertain
15. Reads the stop timer s time remaining The returned value is the time remaining in seconds If the stop timer is disabled or measurement is not en abled the returned value is 0 INP lt n gt CURR lt current gt Example command INP1 CURR 1 Query form INP lt n gt CURR Alternate parameter DEF MIN MAX Sets a channel s Sensing Current setting Suffix lt n gt specifies the channel number through 4 for the corresponding front channel input 5 through 14 for channels of the first attached scanner and 15 through 24 for channels of the second attached scanner The maximum and default values depend on the probe and reference resistor settings The values may be read using the query form with alternate parameters MAX and DEF respectively The actual current may be reduced if the resistance is too high The actual current may be read using the INP lt n gt CURR DATA command INP lt n gt CURR DATA Reads a channel s actual sensing current It is the sensing current that was used when the latest measurement of the channel was acquired INP lt n gt CURR STAN lt boolean gt Query form INP lt n gt CURR STAN Alternate parameter DEF Sets a channel s Standby Current enable A parameter value enables the standby current When enabled sensing current is sourced from the channel s terminals when measurement is enabled even if the channel is not enabled or when another channel is being scanned The default setting i
16. SYST PASS CEN Enables access to password protected settings SYST PASS CEN STAT Returns the password access state SYST PASS GROU MEAS SYST PASS GROU PROB Sets the password Measure Protection setting Sets the password Probe Protection setting Measure Protection Password Probe Protection Password 73 1594A 1595A Super Thermometer Interface Commands 74 8 7 3 8 7 3 1 8 7 3 2 8 7 3 3 Associated Setting or SYST PASS NEW Changes the password Command Function Function screen SYST PASS GROU RES Sets the password Resistor Protection setting Resistor Protection Password SYST PASS GROU TIME Sets the password Time Date Protection setting Time Date Protection Password Password Password SYST PON MIN Reads the time in minutes since power on SYST TIME Sets the Time of the system clock Time Time and Date SYST TIME DAYL Sets the Daylight Saving automatic adjust setting Daylight Saving Time and Date TEST CURR CONF Sets the configuration of the sensing current test CURRENT TEST Calibration TEST CURR STAT Starts or stops the sensing current test CURRENT TEST Calibration TEST LIN ABOR Cancels a linearity self test LINEARITY TEST Calibration TEST LIN INIT Starts linearity calibration LINEARITY TEST Calibration TEST LIN PAR Reads the suggested linearity calibration parameters LINEARITY TEST Calibration TEST LIN REP lt n gt
17. lt error gt is the difference between lt combined gt and the expected value in units of 1x10 6 lt std error gt is the standard error of lt error gt in units of 110 6 The standard errors of lt result A gt and lt result B gt are calculated by dividing their standard deviations by the square root of the sample size and then the two values are combined using a root sum square calculation A report is available only if the Ratio Self Calibration runs to completion If no report is available error 230 Data corrupt or stale is generated in the error queue If the power is switched off and then on again the values lt result A gt lt result B gt and lt combined gt will no longer be available and will be missing in the com mand response TEST LIN REP TIME Example response 2009 06 24 14 30 48 Reads the date and time of the most recent Ratio Self Calibration report see Section 9 Calibration on page 103 The date is in the format Y Y Y Y MM DD The time is in 24 hour format If Ratio Self Calibration has not yet compled error 230 Data corrupt or stale is generated in the error queue TEST LIN STAT Example response 5 Reads the state of the Ratio Self Calibration see Section 9 Calibration on page 103 A non zero response indicates calibration is in progress and the value designates which test number is in prog ress The response is 0 calibration is not running TEST LIN TIME Example response 2
18. oooonnocccccccooonccocooonnononcnonnnnnnnonon EE EErEE EEE EEEE EErEE Eea 35 Table 15 Default Statistical Fields s sssisssiisssiiskisktstktrstt tss non n cnn rrrnnor nro nro 48 Table 16 Statistical Field Descriptions oooonnnnnnncccnnnocnnncccnnonno conocio nan nccnnnrnrrnnnrcrcnr rra 48 Table 17 Recommended Reference Resistors and Sensing Curt 62 Table 18 Remote Operation Ports ccccccccccceesececececeeeeeeeceeeeeeeeeeseeeeceseeeseueeeecieeeseneey 65 Table 19 Report Operation COMMANAS oooooocococcoccccooonnnnncooonnononononnnonononon non orncon ono rrnnnannnoss 70 Table 20 Recommended Resistors For Testing The Current eerren 104 1 1 Before You Start Symbols Used Table 1 lists the symbols that may be used on the instrument or in this manual and the meaning of each symbol Table 1 Symbols Before You Start Safety Information Symbol Description Symbol Description Na AC Alternating Current PE Ground IN AC DC Hot Surface Burn Hazard Battery Read the User s Guide Important Information A MA Complies with European Union directives Off DC On Double Insulated Standby Indication Electric Shock Canadian Standards Association E 10 MQeco OoOBpPO Fuse C TICK Australian EMC mark The European Waste Electrical Ground and Electronic Equipment WEEE Directive 2002 96 EC mark 1 2 Safety Information This instrument is compliant to EN
19. Configure the probe definition ensuring that the MAXIMUM CURRENT field is set to a value equal to or greater than 1 4142 times the nominal current value Open the ZERO POWER MEASUREMENT screen by pressing the MENU key then the MEASURE MENU F3 function key followed by the ZERO POWER MEASUREMENT F5 function key In the Zero Power Measurement screen set CHANNEL to the channel where the probe is connected Set the SETTLE TIME field to a sufficient time period to allow the probe to self heat and stabilize after current is applied For most probes 1 minute is sufficient Set the MEASURE TIME field to a time span that allows a sufficient number of samples to be taken For example with a 2 second sample period and 2 second Display Interval a 1 minute Measurement Time will yield 30 samples If necessary use REPEAT NOMINAL to set the Super Thermometer to repeat nominal current measurement after the 1 4142X step is complete The difference between the beginning and ending nominal current values will indicate if the probe was sufficiently equilibrated during zero power measurement When ready press the START F1 function key to start the zero power sequence of measurements When the measurements are complete the results are displayed on the screen 63 8 8 1 8 2 A Remote Operation Configuring the Network LAN Port Remote Operation Introduction This section contains instructions for controlling the Sup
20. Example response R100_023 Reads the ID of the next resistor in the Resistor Library It also advances the library index used for the next response to the INP RS NEXT command If there are no more resistors in the Resistor Library no response is given and error 230 Data corrupt or stale is generated in the error queue INP RS OVEN STAB Returns the stable condition of the oven The response is if the temperature is stable and 0 if not INP RS PAR lt id gt lt name gt lt value gt Example command INP RS PAR R25_01322 RES 25 001098 Query form INP RS PAR lt id gt lt name gt Password protection Resistor Protection Sets the value of a setting in a resistor definition Parameter lt id gt is the ID of a resistor definition in the Resistor Library If lt id gt does not match the ID of a resistor definition in the Resistor Library error 224 Tllegal parameter value is generated in the error queue Parameter lt name gt specifies the setting to set Settings and their associated names are listed in the table below also see Section 5 7 1 2 1 1 1 DEFINE RESISTOR F2 on page 31 Setting lt name gt lt value gt type or options Resistance RES decimal number Maximum Current MAX_CURR decimal number Calibration Date CAL_DATE string lt yyyy gt lt mm gt lt dd gt Due Date DUE_DATE string lt yyyy gt lt mm gt lt dd gt INP lt n gt RS ROUT lt sour
21. F5 43 ZERO POWER RESULT 45 120
22. In this example a 1595A is used to measure a 25 2 SPRT at the triple point of water using the Zero Power function The SPRT is measured at nominal current 1 0 mA and 1 4142 mA double power current In this example the self heating sensitivity of the SPRT in a triple point of water cell is 0 0024 C mA This was found by using the Zero Power function and reading the SELF HEATING field in the Zero Power results screen This value will vary significantly depending on temperature measurement medium and probe construction The uncertainties used to calculate zero power uncertainty are e Ratio accuracy of the 1595A e Measurement noise e Relative current accuracy of the 1595A e Reference resistor stability Resistance Ratio Accuracy at 0 01 C The ratio accuracy at 0 01 C is based on using the internal 25 Q resistor to measure a resistance of 25 5 Q The 1595A standard uncertainty of resistance ratio is 0 03 ppm To convert this value to temperature divide by 1 0 x 10 and multiply by 1 02 Rx Rs The result is then divided by 0 004 W sensitivity dW dT at 0 01 C see above The final result is 0 000008 C Measurement Noise The Zero Power function reports the standard error of the mean of the zero power value in the STANDARD ERROR field In this example the standard error of the mean is 0 0000018 Q To convert this value into tem perature divide by the resistance sensitivity dR dT of the SPRT at 0 01 C dR dT at 0 01 C
23. PROBE ID SAMPLE_PROBE_1 f ABCDEF KLHNOP UVHXYZ 012345 PRESS SAVE BELOH HHEN DONE CUA CU Figure 8 Alpha Numeric Interface 23 1594A 1595A Super Thermometer Password Protection 24 5 3 5 4 5 5 In the Alpha Numeric Interface use the front panel arrow keys to move the cursor to the desired character Press the ENTER key to enter the selected character in the text edit box Numeric characters can be entered using the Alpha Numeric Interface or the front panel digit keys If a mistake is made pressing the DELETE key will backspace over the character to the left of the cursor When the cursor is placed over a character in the text edit box the DELETE key will delete the character where it is located Use function keys MOVE BACK F1 and MOVE FORWARD F2 to move the cursor left or right in the text edit box Use function keys SAVE F3 and CANCEL F5 to save or cancel the changes that have been made to the text field The EXIT key will also exit the Alpha Numeric Interface with no changes saved Password Protection Some screens by default are password protected while others may be password protected depending on con figuration settings A screen that is password protected will open with edit ability only if a four digit password is entered Otherwise the screen will open with view only see Section 5 7 7 1 PASSWORD F4 on page 54 Menu Navigation The following are important items to help the us
24. Refer to Sec tion 5 7 2 1 ADD PROBE F1 on page 34 for a full description of each field Changes made in the Edit Probe screen are not saved until the SAVE F2 function key is selected The EXIT key or CANCEL F5 can be selected at any time to exit without saving changes 5 7 2 4 A amp 5 7 2 5 5 7 2 5 1 5 7 2 5 2 Menus and Screens Main Menu READ PROBE F4 The Read Probe function key allows the user to read a probe definition from the USB memory device into the Probe Library When a USB memory device that contains a probe definition file is inserted in the front panel the Read Probe screen displays a list of probe definition files prb found on the memory device By scrolling up and down the list using the arrow keys the user can select the desired probe definition file Pressing the ENTER key with the file selected will open the file and display the probe definitions it contains At this point a probe definition can be selected and read into the Probe Library by pressing the ENTER key again If the selected probe definition in the USB memory device has the same ID as a probe definition that already exists in the Probe Library a warning message appears warning that the probe definition in the library will be replaced The user may press the YES function key to update the probe definition and exit or press NO or the EXIT key to return to the Assign Probe screen Tip Probe definition files must be locate
25. Thermistors 2kQ to 10 kQ 10 kQ 0 01 mA 7 3 Scanning Multiple Temperature Probes Use the following instructions to configure the Super Thermometer for scanning multiple temperature probes 1 NYDN fF WW 00 Follow the steps in the previous section Measuring a Temperature Probe to connect and configure two or more temperature probes Press the MENU key to open the Main Menu screen Select the MEASURE MENU F3 function key to open the Measure menu Select the SCAN SETTINGS Fl function key Set SCAN ENABLE to On If needed configure the other scan settings Press the SETUP key In the Channel Setup screen ensure that each channel to which a probe is connected is enabled set to ON Disable all other channels by setting them to Off An alternative method is to press the channel select key above each channel to enable or disable the channel in the scan sequence Press and hold the EXIT key to return to the Measurement screen 9 Begin scanning by selecting the START MEASUREMENT F1 function key 7 4 Measuring Resistance Ratio The ratio measurement is the fundamental measurement from which the resistance and temperature measure ments are derived It is simply the ratio Rx Rs between an unknown resistance Rx and a reference resistor 7 5 Rs To configure the Super Thermometer for ratio measurement follow the steps listed in section 5 2 except select RATIO in step 6 d Configu
26. can also be used to measure the error due to self heating The Zero Power Measurement function automatically acquires the measurements necessary to determine a probe s zero power resistance temperature or ratio This is done by measuring the probe at two levels of cur rent nominal current and 1 4142 times nominal and then using these measurements to calculate the value at zero power While the Super Thermometer is performing a zero power measurement the timing is set to produce a measurement every two seconds and the digital filter is disabled The statistical average is calculated from all measurements acquired during the Measure Time 43 1594A 1595A Super Thermometer Main Menu 44 dg MI RS d Tip Zero Power measurements must be performed in a very stable heat source so temperature drift does not interfere with the calculation Zero power measurement is performed by first measuring the probe at nominal current Then the excita tion current is automatically changed to 1 4142 times the nominal current 1 4142x of the nominal current is referred to as double power excitation current since the power dissipated is twice that of nominal current The zero power value is then calculated with the following equation where is the zero power value is the nominal current value and is the double power value Important The probe definition must be configured so that the Maximum Current setting is at least 1 4142x the no
27. 0 0 8 ppm 0 2 ppm 0 0 to 0 25 2 0 x 10 5 0 x 1081 4 0 to 10 0 2 0 ppm 0 5 ppm 99 confidence level 1 year 0 95 to 1 05 0 3 ppm 0 075 ppm 0 5 to 0 95 1 05 to 2 0 0 8 ppm 0 2 ppm 0 25 to 0 5 2 0 to 4 0 1 0 ppm 0 25 ppm 0 0 to 0 25 2 5 x 107t 6 3 x 1081 4 0 to 10 0 2 5 ppm 0 63 ppm tSpecifications are in terms of absolute ratio All specifications listed in this table apply when using a 25 Q or 100 Q reference resistor Multiply stated specifications by a factor of 2 when using a 10 Q reference resistor with sensing current between 1 and 5 mA and a factor of 10 when using a 1 2 reference resistor with sensing current between 5 and 20 mA When using a 10 kohm reference resistor internal or external use the Absolute Resistance Accuracy specification in Table 4 Resistor Stability Resistor stability characterizes the ability of the instrument to accurately compare two similar resistances within some time period using the internal resistors as references The following specifications apply using the given reference resistor over a one minute average The specifications assume typical laboratory conditions which do not include transportation and large ambient temperature fluctuations Resistance stability is determined by the short term stability of the internal reference resistors and control stability of the temperature stabilizing block It does not include measurement noise 2 2 2 3 2 2 2 4 Table 3 Resistor Sta
28. 128 8 7 3 129 8 7 3 130 8 7 3 131 8 7 3 132 8 7 3 133 8 7 3 134 8 7 3 135 OMAN DOA KRWDY O SENS APER DISP K MES EEEE EEEE EEEE EEan 92 SENS APER PRES NORM PREC EAST LONG sereine E 92 SENS APER SAMP lt tiME Sen R a E Ib 92 SE A o oe 92 SENS AVER2 STAT lt Doole anuencia coinciden e reiri Eras 93 SENS AVER2 COUN lt a 93 SENS AVERS GUEA cria dadas de aida a iia 93 SENSI lt NSI FRES DAA scada 93 SENS lt ASERRATIDAVA saunon a E a EEE ETNE A E 93 STAFOPER tur e E SS E 94 STAT OPER COND 94 STAT OPER ENAB lt VAlUCS scsccstueiseanouesansacaxsentseageniboasceantetadubsanthanideadeassaesseaitesscandeadedutav easton 94 STAT QUES isis aascostecieuinnndeiid i EO EEE A EE S NEA EEEE EATE 94 STAT QUES COND Pesmania a ii TAREE 94 STAT QUES ENAB lt VallE gt iii ae E i A E sau dao sede icon 94 SVS TBEEP IMM acaricia 95 SYST BEEP KEY lt DOOlGCANS ceci ic E a an d 95 SYSTBEEPR SAL ER lt O0GlGAMS eeraa e a E E 95 SYSECODE VERS seneca A io Ens 95 SYST COMM GPIB ADDR lt ValUB gt oocoooccccocococccooncoonnconnconnnconnnnonnnon crono n cono ie iaka E ria 95 SYST COMM GPIB STAT lt BOOlEANS sorires aii reiia dianas 95 SS TCOMM GPIB TERM LIN REN ccoo penca risa 95 SYST COMM SER BAUD lt Valle gt ita dd ii dde aiii 95 SYST COMM SER LIN lt boolean gt 95 SYSECOMM SOCK ADDR lt IP AdGreSSS onses tes iie ri docenas 95 SYSTE COMM SOCK CONT OFF ON QUER cocos taisisl lactea 96 SYSECOMM SO
29. 231 927562 C 4 2010 01 10 14 23 10 1 89280433 47 318163 231 927848 0 000231 USB files are written to a folder named 159x data on the USB memory device and have the extension txt If the file does not exist it will be created If the file already exists new data will be appended to the data already in the file For data to be recorded to external memory a Linux compatible USB memory device formatted with a FAT32 file system must be inserted into the USB Connection on the front panel The following are the Recording Menu function keys RECORDING SETTINGS F1 The Recording Settings function key opens a screen that allows the user to view and change settings related to measurement recording The configuration fields in the Recording Settings screen are as follows MEMORY DEVICE allows the user to choose which memory device to be written to The options are Internal USB or Both USB FILE is a user selectable file name to which data is stored on the USB memory device Upon pressing Enter the Alpha Numeric Interface opens allowing the user to input a file name The file name extension txt is automatically appended to the file name RECORD STATISTICS determines whether statistics data is recorded to the memory device along with the measurement Additional data recorded when Record Statistics is ON include Resistance Ratio Resistance Statistical Mean and Standard Deviation When Record Statistics is ON the capacity of
30. 57 Daylight Saving 100 DAYLIGHT SAVING 51 58 DECIMAL FORMAT 47 57 decimal point 18 Decimal setting 81 DEFINE RESISTOR F2 31 DEL 23 DELETE 24 DELETE CONFIG F3 54 DELETE key 18 DELETE PROBE F5 38 DELETE RESISTOR F5 33 delta 80 DELTA 35 48 86 DELTA CHANNEL 49 Delta Mode 80 DELTA MODE 49 Delta Offset 80 DELTA OFFSET 49 Depth 9 DHCP 51 65 96 DHCP ENABLE 51 66 dielectric absorption 40 digital filter 93 Digital Filter 41 Digital Filter Description 41 DIGITAL FILTER F3 41 Dimensions 9 display 47 Display 19 DISPLAY BRIGHTNESS 47 57 DISPLAY INTERVAL 40 Display Menu 46 DISPLAY MENU 29 DISPLAY MENU F4 46 dR dT 11 DRIFT 45 dT dW 11 Due Date 89 DUE DATE 31 DVD 15 dW dT 11 DWF connectors 58 E Earth Ground 22 EDIT PROBE F3 36 EDIT RESISTOR F2 32 EN 61010 1 2nd Edition 1 English 15 19 47 82 ENTER 18 23 EOI 52 69 ERASE DATA F5 43 ERRORS F5 52 Ethernet 21 51 65 116 excitation current 30 EXIT 18 EXP 18 23 exponential number 18 Extended range test 15 External Reference Resistor 62 external resistor 20 30 F FAT32 17 FIELD SETTINGS F2 48 FILE NAME 53 Filter Enable 93 FILTER ENABLE 41 Filtering 39 firmware 54 95 Firmware Version 50 Fluke Corporation ii French 15 19 47 82 Front Panel 17 19 front panel key lock 98 Front Panel Keys 18 Function Keys 18 Fuse Rating 9 Fuses 15 Future Peripheral 21 G G 59 GATEWAY 51 Gateway Add
31. 61010 1 2 Edition and CAN CSA 22 2 No 61010 1 04 Pollution Degree 2 This instrument is designed for indoor use only Use this instrument only as specified in this manual Otherwise the protection provided by the instrument may be impaired 1 2 1 The following definitions apply to the terms Warning and Caution e WARNING identifies conditions and actions that may pose hazards to the user e CAUTION identifies conditions and actions that may damage the instrument being used WARNINGS DO NOT use this unit in environments other than those listed in the User s Guide Follow all safety guidelines listed in the User s Guide Calibration equipment should only be used by trained personnel This instrument can measure extreme temperatures Precautions must be taken to prevent personal injury or damage to objects Probes may be extremely hot or cold Cautiously handle probes to prevent personal injury Carefully place probes on a heat cold resistant surface or rack until they reach room temperature DO NOT operate near flammable materials Use only a grounded AC mains supply of the appropriate voltage to power the instrument 1594A 1595A Super Thermometer Authorized Service Centers 1 2 2 1 3 e DO NOT connect an AC mains supply that does not match the voltage setting on the back of the unit e DO NOT use this instrument in combination with any probe PRT or thermistor to measure the temperature or
32. 90 literature RTPW a5 b5 High Subrange 6 0 to 962 C RTPW a6 b6 c6 d High Subrange 7 0 to 660 C RTPW a7 b7 c7 High Subrange 8 0 to 420 C RTPW a8 b8 High Subrange 9 0 to 232 C RTPW a9 b9 High Subrange 10 0 to 157 C RTPW a10 High Subrange 11 0 to 30 C RTPW a11 Low Subrange 1 13 to 273 K RTPW a1 b1 c1 c2 c3 Low Subrange 2 24 to 273 K RTPW a2 b2 c1 c2 c3 Low Subrange 3 54 to 273 K RTPW a3 b3 c1 c2 c3 Low Subrange 4 189 to 0 C RTPW a4 b4 Low Subrange 5 38 to 0 C RTPW a5 b5 RO See IEC 751 or ASTM E 1137 literature Use RO 100 0 for standard IEC 751 ASTM E 1137 or enter actual probe RO for improved accuracy CVD ABC RO A B C See CVD literature CVD ALPHA RO ALPHA DELTA BETA See CVD literature POLYNOMIAL CO C1 C7 PT 100 C y C RIQ 35 1594A 1595A Super Thermometer Main Menu 36 5 7 2 1 1 5 7 2 1 2 5 7 2 1 3 5 7 2 2 5 7 2 3 Type Conversion Coefficients Equations THERMISTOR R T POLYNOMIAL BO B1 B2 B3 a r i R Q ex B _ LA op ral T R POLYNOMIAL AO A1 A2 A3 teC Y lin RIQ Note With ITS 90 conversion where subranges overlap the high subrange supersedes the low subrange If only subrange 5 is used in a probe definition select subrange 5 for both High Subrange and Low Subrange If a subrange is set to NONE all temperatures will be based on
33. Audio Indication 83 AUDIO INDICATION 40 44 Authorized Service Centers 2 AUTOMATIC CENTERING 49 AUTOMATIC SCALING 49 average 77 Average Count 93 AVERAGE COUNT 41 AVERAGE ENABLE 40 Averaging 39 B banana jacks 58 bare wire 58 baud rate 51 69 95 BETA 35 86 brightness 47 57 C C1 59 C2 59 CALCULATION 30 Calibrating an SPRT 12 calibration 103 internal resistors 106 linearity 104 calibration date 76 Calibration Date 50 86 89 CALIBRATION DATE 31 35 56 CALIBRATION F5 55 Calibration Interval 108 CALIBRATION PARAMETERS F5 55 108 CANCEL F1 45 CANCEL F5 36 CAN CSA 22 2 No 61010 1 04 Pollution Degree 2 1 carriage return 52 Carry handle Kit 15 Case 15 Ch2 90 Ch4 90 CHANNEL 44 45 104 107 Channel Select Key 18 29 CHANNEL SETTINGS F2 30 61 CHANNEL SETUP 28 CHANNEL SETUP F1 29 Chinese 15 19 47 82 CLEAR ERRORS F1 52 CLEAR FILTER F1 41 CLEAR GRAPH CLEAR MESSAGE F4 28 CLEAR INTERFACE F1 69 COMBINED GRAPH 49 Combining the Uncertainties 12 Command Syntax 70 COMPUTER 21 65 CONFIG F3 52 Configuring an External Reference Resistor 62 Connecting a Probe 58 Control Enable 96 CONTROL ENABLE 52 Conversion 86 CONVERSION 35 40 COPY PROBE F2 36 Countdown Timer 27 CURRENT 26 104 Current Test 103 CURRENT TEST F2 55 103 CVD ABC 35 86 CVD ALPHA 35 86 D Data Graph Section 27 Date 50 DATE 45 48 50 58 107 Date Format 50 81 115 1594A 1595A Super Thermometer DATE FORMAT 47
34. CEEAR MESSAGE Fiscal a tias 28 5 6 10 START STOP RECORD F5 iiieoo e a EEE E E EEEE EEEE n 28 SA MaimMent serene a a E o 28 571 CHANNELSSE TOP Pia A a it 29 5 7 1 1 ASSIGN PROBE F1 cinco carac 29 5 7 1 2 CHANNEL SETTINGS Fl ecicinonicininioninionociononoconooo coronan 30 5 7 2 PROBE MENU ES inci ad dida da 34 5 7 2 1 ADD PROBE F1 ecc 34 S22 COPY PROBE F2 iccccascscesec is AA aaa 36 5 7 2 3 EDIT PROBE Eee 36 5 7 2 4 READPROBE Pd ecc eee 37 5 7 2 5 MANAGE PROBES F5 coccion conoceis 37 5 7 3 MEASURE MENU FB coooniononicnoniononicnonicnononnonon conocio coronario coronario caian 38 5 7 3 1 SCAN SETTINGS Fiesta ia da 39 5 7 3 2 TIMING SETTINGS E2 c cccsecccccseeccsscscsesscsesecsesecscssecssessvsssacevsasevensavsvsessvessevevsesevensavenseteeees 39 5 7 3 3 DIGITAL FILTER Fina bil ns hung raanteleaaviedas 41 5734 RECORDING MENU FA viana tild 41 5 7 3 5 ZERO POWER MEASUREMENT F5 csccccsccsescssesessescsessesesscsesussvsesecsvsessescsevsvsesevevsetevseteeees 43 5 7 4 DISPLAY MENU F4 ooooconioconiononionononnoonnonon nono ekk tiin eaan EAL n EAL EEA EESEL EEEE EEE EEE Ena earan 46 5 7 4 1 USER SETTINOS ED ds E EE E E 47 5 7 4 2 FIELD SETTINGS F2 cocinas 48 5 74 3 STATISTICS SETTINGS ES uscar ed dba ia catas 49 5 744 GRAPH SETTINGS FO isc 49 57 45 O n E E E E 50 5 7 5 SYSTEM MENU AN 50 5 7 5 1 TME DATE PD ista aaa tad 50 5 7 5 2 REMOTE INTERFACE F2 ccccccscsccssescsesscsesecsesecscsusacsvs
35. NETWORK screen use the Up Down arrow keys to select SUBNET MASK 2 Use the front panel numeric keys to enter the subnet mask address Press the ENTER key to save the address 3 Cycle the unit s power to allow the new address to take effect Setting the Host Name The Host Name is the host portion of the domain name which is translated into an IP address The de fault host name is F159X lt serial number gt where lt serial number gt is the unique serial number of the Super Thermometer To change the Host Name use the following steps 67 1594A 1595A Super Thermometer Using the Web Interface 68 8 3 8 4 1 In the NETWORK screen use the Up Down arrow keys to select HOST NAME 2 While HOST NAME is highlighted pressing the ENTER key opens the Alpha Numeric Interface allowing the user to enter a host name up to 16 characters in length 3 Select the SAVE F3 function key to save the newly entered host name 4 Cycle the unit s power to allow the new host name to take effect Using the Web Interface The Super Thermometer web interface Figure 17 Super Thermometer Web Interface on page 68 allows the user to easily communicate with the Super Thermometer through the Ethernet connection The web inter face is a page that is served by the Super Thermometer when the LAN port is configured and connected to a network The user is able to access the web interface by simply entering the IP address of the Super
36. OR CONSEQUENTIAL DAMAGES OR LOSSES INCLUDING LOSS OF Fluke Corporation 799 E Utah Valley Drive e American Fork UT 84003 9775 e USA Phone 1 801 763 1600 Telefax 1 801 763 1010 E mail support hartscientific com www hartscientific com Specifications subject to change without notice e Copyright 2008 Printed in USA Table of Contents 1 2 3 Before YOU Start suis ia 1 Tale Symbols Used avr a ER eles een tees 1 T2 Salely IMIOMMALOM wicccadrreuteriniatiessindarnd iia 1 Zi WARNINGS 7 ino reed dede ici 1 T2 CAUTIONS ece ana e a aa E ATEEN EEE a E A E 2 1 3 Authorized Service Centers sseessseesssiestttts titrs titrs ttrt ttt rtt ttSttEnSt ESSES SEES SEES EEEn EEEE 2 Introduction and Specifications oocccccccncncnnnnnnnnnnnnnnnnanannnannnnnnnnnnnnos 5 2 1 MTOduciON rara 5 ES 2 eccccccecceeceeeceeeeceetenececeeeeeseaeeeceseeescaeeecceeeessaeeeecceeeseeeeescseeeeneeeetaas 5 22 Generalo a a is 5 22 2 Primary Specification a 6 2 2 2 1 Resistance Ratlo ACCUTANE ia 6 2 2 2 2 Resistor Stable ita 6 2 2 2 3 Absolute Resistance ACCUTAC Y ccocoinociconccconononcconncconncon conc ccoo nono nn can cnn rc nan an ran rana naaa ncrnnncninacins 7 2 2 2 4 Measurement Current ACCULaCY e cceccecceceeereeeeeececseeaeeeeecaecaeeaecaeesaetaeesaesatecaesarecntsareneeenteaes 7 2 2 3 Ancillary Specification 8 2 2 3 1 Temperature Measurement NoiSe naniii rincon e iE ht ed ple 8 2 2 3 2 Relative M
37. Q The result is then divided by dR dt of the thermistor probe at 0 C which in this example is 1244 9 Q C The final result is 0 000085 C Measurement Noise Measurement noise is best observed by using the Standard Error of the Mean statistics field of the Super Ther mometer In this example the standard error of the mean is 0 000004 C Combining the Uncertainties If the thermistor probe is being measured in temperature mode with calibration coefficients the standard uncertainty of the calibration listed on the calibration report would be combined by RSS with the resistance accuracy and measurement noise uncertainties 3 1 3 2 Preparation for Operation Line Voltage and Fuses Preparation for Operation Unpacking and Inspection The Super Thermometer is shipped in a container designed to prevent damage during shipping Inspect the contents of the container for damage and immediately report any damage to the shipping company Instruc tions for inspection are included in the shipping container Table 9 Optional Accessories Item Model or part number Rack Mount Kit 1594 RMKT 2590 Scanner 2590 Case 1594 CASE Carry handle Kit 1594 HNDL Extended range test report 1994 1594A 1995 1595A Instruction Manuals The Super Thermometer instruction manual set is shipped on DVD The set includes e 1594A 1595A Super Thermometer User s Guide e 1594A 1595A Super Thermometer Technica
38. Screen appears at power on By default it is 1 and the Start up Help Screen appears each time the instrument is powered on If the setting is changed to 0 the Start up Help Screen will no longer appear DISP LANG ENGLISH CHINESE JAPANESE SPANISH GERMAN FRENCH RUSSIAN Query form DISP LANG Alternate parameter DEF Sets the display Language setting see Section 5 7 4 1 USER SETTINGS F1 on page 47 The default setting is ENGLISH DISP TEMP DIG lt digits gt Query form DISP TEMP DIG Alternate parameter DEF MIN MAX Sets the display Temperature Resolution setting see Section 5 7 4 1 USER SETTINGS F1 on page 47 Parameter lt digits gt specifies the number of decimal places The range is 1 to 6 and the default is 5 DISP WARN DUE lt boolean gt Query form DISP WARN DUE Alternate parameter DEF 8 7 3 43 8 7 3 44 8 7 3 45 8 7 3 46 8 7 3 47 Remote Operation Interface Commands Sets the display Rs Due Alert enable see Section 5 7 4 1 USER SETTINGS F1 on page 47 The default setting is OFF DISP WARN ITS lt boolean gt Query form DISP WARN ITS Alternate parameter DEF Sets the display ITS 90 Subrange Alert enable see Section 5 7 4 1 USER SETTINGS F1 on page 47 The default setting is ON FETC lt channel gt Example command FETCH 4 Example response 231 92811 C 4 2009 03 23 14 33 20 Reads a channel s latest measurement The lt channel gt parameter may be 1 through 4 for cor
39. Start Up Help is on Pressing the NEXT F1 function key continues to the Time and Date screen allowing the user to enter the system Time Date and Daylight Saving settings with the following configuration fields TIME is the time of the system clock It is always in 24 hour format DATE is the date of the system clock It appears in the format determined by the Date Format setting see Section 6 2 User Settings Screen on page 57 DAYLIGHT SAVING determines whether the system clock is automatically adjusted at the beginning and end of the Daylight Saving period Options are OFF NORTH AMERICA and EUROPE The user settings sequence is completed by selecting the NEXT F1 function key at which point the user is prompted to allow the user settings screen to be displayed upon power up After making the selection the Channel Setup screen is shown to help the user set up a measurement Connecting a Probe or Resistor CAUTION Incorrect sensing current can damage a probe or resistor Before connecting a device to the Super Thermometer ensure that the sensing current setting does not exceed the limit of the device 1594A SUPER THERMOMETER calibration La e Optional Shield 7 Figure 16 Input Wiring The Super Thermometer measurement inputs are equipped with patented gold plated DWF connectors These connectors are spring loaded to provide constant contact pressure with measurement connections and they
40. Thermom eter in an internet browser Important The LAN port must be properly configured and connected to a network before the web interface tool will operate The computer used to view the web interface must be on the same network The Home screen of the web interface displays product information and the current TCP IP settings of the Super Thermometer The Measure screen of the web interface provides a remote view of the Super Thermom eter display with buttons and selection boxes that allow the user to start and stop measurement reset statistics clear alert messages enable and disable scan mode and select measurement channels The Terminal screen of the web interface allows the user to enter any remote operation command in the Command window If a command requires a reply from the Super Thermometer the reply will appear in the Response window A password is required to use the Terminal screen The default password is 1234 A new password can be configured in the System Menu Password screen 1594A 1595A Super Thermometer Hart Scientific CHANNEL Rx 3 2 41353259 s PROBE ID UNDEFINED MEAN 2 41353248 Channel on CURRENT 1 0 mA STD DEY 0 00000029 O O Rs 259 SE OF MEAN 0 00000009 Pa Ta OVEN READY N 75 sl s2 Measurement On r r Recording Off ra F3 Message No alert Fa Ta r O RESET STATISTICS Ea O E START RECORDING CLEAR MESSAGE z j z Figure 17 Super Thermometer Web Interface Configuring the USB Port
41. This assists a first time user in setting preferences and the system clock Menu System The following is an outline of the menu system Measurement Screen l MAIN MENU MENU key CHANNEL SETUP SETUP key ASSIGN PROBE see PROBE MENU below CHANNEL SETTINGS SET UP Rs ASSIGN RESISTOR DEFINE RESISTOR ADD RESISTOR EDIT RESISTOR READ RESISTOR MANAGE RESISTORS READ FILE WRITE FILE MOVE UP MOVE DOWN DELETE RESISTOR ON OFF MEASURE MENU see MEASURE MENU below PROBE MENU ADD PROBE COPY PROBE EDIT PROBE TEST CALCULATION READ PROBE MANAGE PROBES READ FILE WRITE FILE MOVE UP MOVE DOWN DELETE PROBE MEASURE MENU Dg S SCAN SETTINGS TIMING SETTINGS DIGITAL FILTER CLEAR FILTER RECORDING MENU RECORDING SETTINGS VIEW DATA READ FILE WRITE FILE ERASE DATA ZERO POWER MEASUREMENT ISPLAY MENU USER SETTINGS FIELD SETTINGS STATISTICS SETTINGS GRAPH SETTINGS TEMPERATURE UNIT YSTEM MENU TIME DATE REMOTE INTERFACE SERIAL USB NETWORK IEEE 488 ERRORS CONFIG STORE CONFIG RECALL CONFIG DELETE CONFIG RESTORE DEFAULT UPDATE FIRMWARE PASSWORD CALIBRATION SYSTEM TEST CURRENT TEST RATIO CALIBRATION RESISTANCE CALIBRATION CALIBRATION PARAMETERS 5 6 Measurement Screen The Measurement Screen contains the function keys and display fields needed for typical measurement opera tion It is the
42. USB Connection The USB port on the front panel allows a formatted USB memory device to be connected to the Super Ther mometer for saving measurements and settings The memory device must be Linux compatible and formatted with the FAT32 file system Important When inserting a USB memory device into the front panel USB port wait for about 10 seconds to allow the system to recognize the memory device before attempting to write to or read from it 17 1594A 1595A Super Thermometer Front Panel Features 4 2 3 Front Panel Keys Table 10 Front panel key descriptions DIDDIG Pik DELETE i y 100006 i 18 The Power Standby key turns off the display and disables the front panel keys sending the system into standby Power remains applied to some internal components such as the resistor oven When the system is brought out of standby by pressing the Power Standby Key it is not necessary to wait the 30 minute warm up period The numeric keys consist of the digits O through 9 sign and decimal point These keys are used for entering numeric values The arrow keys are used to move the cursor on the display and to navigate lists The SETUP key is used to directly access the Channel Setup menu for quick and easy measurement configuration The DELETE key is used to delete alpha numeric characters The EXP key is used when entering an exponential number for example 1 0 E 04 The ENTER key
43. an error 221 Settings conflict is generated in the error queue Also Channel 2 cannot be set to CH2 and Channel 4 cannot be set to CH4 ROUT CLOS lt channel gt Query form ROUT CLOS Example command ROUTE CLOSE 3 Example response 3 Selects one channel for measurement The lowest channel appearing in lt channel list gt is enabled and all other channels are disabled The Scan Enable setting is set to OFF see Section 5 7 3 1 SCAN SETTINGS F1 on page 39 If measurement is disabled the channel will not actually be measured until measurement is started If measurement of another channel is in progress the new channel will not be measured until the measurement completes A channel number in lt channel list gt may be 1 through 4 for the corresponding front channel input 5 through 14 for channels of the first attached scanner and 15 through 24 for channels of the second attached scanner If a scanner is attached channel is not allowed The channel is specified in channel list format preceded by an character everything enclosed in parenthesis If scanning is on the query will return an empty channel list ROUT CLOS STAT Example response 2 Returns the channel number of whatever channel is actively being measured whether or not scanning is en abled If measurement is off an empty channel list is returned ROUT SCAN lt channel list gt Example command ROUTE SCAN 1 2 4 6 14 Query form ROUT SCA
44. be displayed on a VGA monitor e Selectable operating language English Chinese Japanese Spanish French German or Russian e Intuitive User Interface makes the Super Thermometer easy to configure and use right out of the box 2 2 Specifications 2 2 1 General Current best practices in metrology require uncertainty analyses to be in compliance with the ISO Guide to the Expression of Uncertainty in Measurement often referred to as the GUM For convenience the specifica tions in this section are listed in k 2 95 coverage and in k 3 99 coverage to allow the user to easily apply the specifications in an uncertainty analysis The following specifications apply after the standard warm up period of 30 minutes The Super Thermometer is designed to measure with accuracy and stability without the need for internal auto cal or zeroing routines To realize the full potential of measurement ability accepted metrology practices such as the use of proper wiring should be adhered to In addition it is important to ensure that the instrument is correctly set up The specifications are divided into three categories primary specifications ancillary specifications and gen eral specifications 1594A 1595A Super Thermometer Specifications 2 2 2 2 2 2 1 2 2 2 2 Primary Specifications the core set of measurement accuracy specifications of the Super Thermometer They are guaranteed for performance verification at the 99 co
45. be measured by the current meter or voltage readings to be taken across the resistor During current test the channel s LED indicator is illuminated green The channel current and polarity may be changed during the test Current Test is stopped by pressing the STOP F1 function key or the EXIT key This switches off the sensing current allowing the user to connect a different resistor or change any of the configuration fields Press the EXIT key to leave the test screen If using the calibrated resistor and voltmeter method calculate the actual current by dividing the measured voltage by the value of the resistor The difference between the actual measured current and the current setting should be within the measurement current accuracy If the current is not within specification contact the near est Fluke Authorized Service Center for more information RATIO CALIBRATION F3 The Ratio Self Calibration function allows the user to perform a ratio linearity check or calibration using an internal resistor network No other test equipment is required Due to the simplicity and short time the test takes to run Ratio Self Calibration can be performed as often as needed Caution Ratio Self Calibration does not test resistance accuracy or calibrate the internal reference resistors Running the Ratio Self Calibration function does not require a password This is because it reports the results of the linearity test only If adjustment is needed
46. changed without first issuing the password access enable command SYST PASS CEN Some commands may conditionally be password protected depending on the associated group password protection setting The level of password protection is so indicated in the description for each command unless the command is never protected Read ing a setting is always allowed In the commands lists and descriptions that follow brackets indicate optional usage For a lt boolean gt parameter 0 or 1 is accepted or alternately OFF or ON a corresponding response to a query is either 0 or 1 only Many parameters may be given as DEF MIN or MAX to set the setting to its default minimum or maximum value respectively A setting s default minimum or maximum value may be deter mined using the query form of the command and adding a parameter DEF MIN or MAX respectively List of Commands The following table lists the commands in alphabetical order Table 19 Report Operation Commands Associated Setting or Command Function Function screen CLS Clears all status registers and the error queue ESE Sets the Standard Event Status Enable Register ESR Reads and clears the Standard Event Status Register IDN Reads the product information RST Resets operating settings to defined values SRE Sets the Service Request Enable Register STB Reads the Status Byte Register
47. contains probe configura tion information that is configured and stored by the user A user can easily program probe parameters into the Probe Library and quickly assign the parameters to any of the measurement channels Tip Once the probe definitions are programmed into the Probe Library they can be conveniently copied to a USB memory device see Section 5 7 2 5 MANAGE PROBES F5 on page 37 so they can be backed up and easily reloaded if needed The following are descriptions of each function key in the Probe Menu ADD PROBE F1 The Add Probe screen is used to add a new probe definition to the Probe Library Up to 100 definitions can be stored in the Probe Library If the limit has been reached the user will not be allowed to add more probe definitions The following fields are used to define a probe configuration ID is the probe ID field The user may enter alpha or numeric characters to enter a unique probe ID up to 24 characters in length Duplicate probe IDs cannot be saved With the ID field selected pressing ENTER will open the Alpha Numeric Interface allowing the user to enter the probe ID TYPE defines the type of probe The options are PRT THERMISTOR and RESISTOR The type selected will determine what other probe configuration fields appear Menus and Screens Main Menu CALIBRATION DATE the calibration date of the probe The digits may be set to zero if the date is undefined NOMINAL CURRENT the sensing c
48. default setting which is 2 SENS APER PRES NORM PREC FAST LONG Query form SENS APER PRES Alternate parameter DEF Sets the measurement timing settings to preset values see Section 5 7 3 2 TIMING SETTINGS F2 on page 39 This is equivalent to pressing the PRESET NORMAL PRESET PRECISION PRESET FAST or PRESET LONG function key in the Timing Settings screen It affects the Sample Period Display Interval and Average Enable settings For the query form if the timing settings match one of the presets the name of the preset is returned If the settings do not match any of the presets NONE is returned The RST command sets the timing settings to the default preset which is NORM SENS APER SAMP lt time gt Query form SENS APER SAMP Alternate parameter DEF MIN MAX Password protection Measure Protection Sets the measurement Sample Period see Section 5 7 3 2 TIMING SETTINGS F2 on page 39 Parameter lt time gt is in seconds Allowed values for lt time gt are 1 2 5 and 10 Values other than these are rounded down to the nearest allowed value The Display Interval setting will be changed if necessary so that it is never less than the Sample Period setting The RST command sets Sample Period to the default setting which is 2 seconds SENS AVER1 STAT lt boolean gt Query form SENS AVER1 8 7 3 84 8 7 3 85 8 7 3 86 8 7 3 87 8 7 3 88 Remote Operation Interface Commands Password protect
49. follows 15 1594A 1595A Super Thermometer Connecting to Line Power 16 3 5 1 Disconnect line power 2 Observe what line voltage setting is displayed in the PEM window If it is correct the fuse assembly will be re inserted in the same orientation it is removed Otherwise it will need to be rotated 180 before re insertion 3 Open the fuse compartment by inserting a screwdriver blade in the slot located at the top of the fuse compartment and open the PEM door 4 Use the screwdriver blade to pry out the fuse block by inserting the blade in the slot located at the top of the fuse block 5 Remove the fuses from the assembly for replacement or verification Be sure the correct fuses are installed 6 Reinstall the fuse assembly by pushing it back into the PEM while ensuring that the correct line voltage label is shown in the PEM window Close the PEM door so it locks in place Figure 1 PEM Power Entry Module Connecting to Line Power WARNING To avoid electrical shock connect the factory supplied three prong line power cord to a properly grounded power outlet Do not use a two prong adapter or extension cord that will break the ground connection After the line voltage setting and correct fuse are verified connect the instrument to a properly grounded three prong outlet using the provided line voltage cord Placement and Rack Mounting In general place the Super Thermometer in an area free of drafts and excessiv
50. in com mands are not case sensitive Command headers consist of one or more mnemonics separated by colons Mnemonics use letter characters and possibly numeric digits as well Commands as published use abbreviated words for mnemonics Only the first three or four characters of each word in a received command are recognized and subsequent letters are ignored This allows a user to use the full word if desired for instance FETCH instead of FETC A mnemonic may end with a numeric suffix that specifies one of a set of independent function blocks such as input channel data paths If a numeric suffix is omitted when a particular block must be specified an error is generated in the error queue Header suffix out of range Query commands are commands that request data in response Query commands have a question mark im mediately following the command header Some commands require parameter data to specify values for one or more parameters The command header is separated from the parameter data by a space ASCII 20 hex or 32 decimal Multiple parameters when required are separated by a comma This product does not support compound commands multiple commands per line separated with semicolons All commands are sequential the execution of each command and any associated response is completed be fore any subsequent command is processed Some commands may be password protected so that the associated setting cannot be
51. in the Ratio Calibration screen 105 1594A 1595A Super Thermometer RESISTANCE CALIBRATION F4 106 9 4 1 9 4 2 9 5 The reported data of the Ratio Self Calibration may be written to a file on a USB memory device using the WRITE FILE F1 function key in the View Report screen see Write File below The calibration parameters associated with measurement linearity may be adjusted to improve the accuracy if necessary using the ADJUST PARAMETERS F2 function key see Adjust Parameters below The following function keys are found in the View Report screen WRITE FILE F1 The Write File function allows the user to write the Ratio Self Calibration report to a file on the USB memory device The user may change the file name by pressing the ENTER key to open the Alpha Numeric interface and entering a file name Once the file name is set and after the USB memory device is inserted into the front USB port the user presses the CONTINUE F1 function key to proceed to write the file The file is stored in a folder named 159x test If the file already exists the new test results are added to the file The results of each individual test in a Ratio Self Calibration are written to the file as follows LINEARITY lt test gt lt tolerance gt lt error gt lt of tol gt lt SE gt lt date and time gt lt test gt is the test number 1 through 8 lt tolerance gt is the specified tolerance in units of 110 lt er
52. interface ports Possible options are 1 2 10 30 and 60 seconds The default option is 2 seconds Changing the Display Interval setting may affect the Sample Period setting as Sample Period cannot be greater than Display Interval AVERAGE ENABLE determines whether fundamental measurement samples are averaged before being passed to the digital filter step If Average Enable is ON all fundamental measurements acquired during the Display Interval are combined by averaging If Average Enable is OFF or if Sample Period is the same as Display Interval only a single sample the most recent is passed to the next step in the measurement process The default option is ON STOP TIMER ENABLE enables or disables the stop timer which stops measurement after a specified length of time If Stop Timer Enable is ON the stop timer begins counting down when measurement is started using the START MEASUREMENT F1 function key in the Measurement screen and stops measurement au tomatically when the timer elapses If STOP TIMER ENABLE is OFF default setting is OFF measurement continues indefinitely until the user stops measurement When the stop timer is enabled and measurement is enabled an hourglass symbol and the time remaining in hours minutes and seconds appears at the bottom of the Measurement screen TIMER DURATION sets the stop timer duration The value is a number of hours minutes and seconds ranging from 00 00 01 to 23 59 59 The default
53. is required for all internet and TCP IP communications If DHCP is enabled the Su per Thermometer will use the dynamic address supplied by the DHCP server However if DHCP is disabled the configured static IP address will be used The Super Thermometer comes from the factory with IP address set to 0 0 0 0 Note If the Super Thermometer will be used on a corporate network and DHCP is not used contact the network administrator for a static IP address to be used exclusively by the Super Thermometer DHCP must be disabled to use a static IP address To enter a static IP address use the following steps 8 2 4 8 2 5 8 2 6 Remote Operation Configuring the Network LAN Port 1 In the NETWORK screen use the Up Down arrow keys to select DHCP ENABLE 2 IF DHCP is set to ON use the Left Right arrow keys to select OFF Press the ENTER key to save the change 3 Arrow down to IP ADDRESS and enter the desired static IP address using the front panel keys Press the ENTER key to save the IP address 4 Cycle the unit s power to allow the new address to take effect Setting the LAN Gateway Address If communication to the Super Thermometer passes through a router or gateway and DHCP is disabled the subnet mask and gateway address on both the host computer and the Super Thermometer must be set Get the correct subnet mask and gateway address from the network administrator The gateway address is the IP address of a gateway route
54. is set to OFF Timer Duration is set to 3600 s Timer Beep is set to ON Filter Enable is set to ON Time Window is set to 60 Statistics Mode is set to UNLIMITED Sample Count is set to 100 Delta Mode is set to OFFSET Delta Offset is set to 0 Delta Channel is set to channel 2 Unit is set to C The key lock setting is set to off Statistics are reset Remote Operation Interface Commands Not affected are channel settings other than enable probe definitions resistor definitions recording settings display settings other than Unit remote interface settings time and date password settings and calibration settings SRE lt value gt Example command SRE 16 75 1594A 1595A Super Thermometer Interface Commands 76 8 1 3 7 8 7 3 8 8 7 3 9 8 7 3 10 8 7 3 11 Query form SRE Sets the Service Request Enable register This mask register determines which corresponding bits of the Status Byte Register see Section 8 7 3 7 STB on page 76 affect the MSS master summary bit bit 6 of the Status Byte Register and generate a service request from the IEEE 488 port STB Example response 16 Reads the Status Byte Register This indicates any of several events defined by the IEEE 488 2 and SCPI stan dards and which are listed in the following table Reading the Status Byte Register does not affect it Bit Condition not used not used Error Questionable status Message availa
55. left shows channel configuration information with the following four fields PROBE ID shows the identification of the probe definition assigned to the channel being measured see Section 5 7 2 PROBE MENU F2 on page 34 CURRENT shows the excitation current used in measuring the probe see Sensing Current under Section 5 7 1 2 CHANNEL SETTINGS F2 on page 30 RS shows the reference resistor used for the measurement see Section 5 7 1 2 CHANNEL SETTINGS F2 on page 30 5 6 3 5 6 4 5 6 5 Menus and Screens Measurement Screen OVEN indicates whether the resistor oven is stable and ready for measurement After power up the OVEN field will first indicate SETTLING while the oven warms up and settles to the proper temperature When the oven temperature is stable the field will display READY to indicate that the Super Thermometer is ready for measurement It typically takes about 30 minutes for the temperature to settle and the indication to change to READY If only external reference resistors are used it is not necessary to wait for the oven to settle Statistics Fields The Statistics Fields section of the display contains user selectable statistics fields associated with the cur rently displayed measurement see Section 5 7 4 2 FIELD SETTINGS F2 on page 48 The Statistics Fields are displayed during measurement regardless whether Graph or Data display mode is selected The fields are reset when t
56. located on the rear panel The Current C1 C2 Potential P1 P2 and Guard G terminals are labeled to facilitate proper connection see Figure 16 on page 58 4 3 1 Scanner Connection 2590 MULTIPLEXER The 2590 Scanner connection is a 15 pin socket located on the back panel It is used to control an optional scanner Refer to the scanner manual for connection and setup instructions 20 4 3 2 4 3 3 Front and Rear Panel Features Rear Panel Features Future Peripheral Connection SCANNER A USB peripheral port is intended for future peripheral control Note This port is NOT used for external memory connection For external memory via USB see Section 4 2 2 USB Connection on page 17 and Figure 2 on page 17 Remote Operation Connections The Super Thermometer comes equipped with several remote operation connections See Table 11 for the remote operation connection descriptions Using the LAN connection and a web browser the user is able to operate the Super Thermometer remotely via the provided web interface The Super Thermometer serves a page that allows the user to view the display and control the Super Thermometer through the web browser For more information refer to the Remote Opera tion section Table 11 Remote Operation Connections Connection Description LAN Ethernet connector that allows connection to a network for controlling the instrument and transmitting measurements Lu USB port that allows
57. measurement display Recording Status indicates whether recording is in progress Alert Messages displays alert messages Alert messages only appear when the Measurement Screen is dis played See the following table for a list of alert messages When an alert message is displayed the CLEAR MESSAGE F4 function key may be pressed to clear the message Table 12 Alert Messages Priority Message Description 1 RECORDING ERROR A recording error occurred such as memory full or USB device was removed that prevents further recording 2 MAXIMUM TEMPERATURE The measured temperature exceeds the Maximum Temperature EXCEEDED setting specified in the probe definition 3 ITS 90 SUBRANGE EXCEEDED The measured temperature is outside either of the selected ITS 90 subranges in the probe definition 4 RESISTOR DUE FOR CALIBRATION The Rs resistor used for the measurement is due for calibration as specified by the Due Date setting in the resistor definition The following function keys are located in the Measurement screen 27 1594A 1595A Super Thermometer Main Menu 28 5 6 6 5 6 7 5 6 8 5 6 9 5 6 10 5 7 START STOP MEASUREMENT F1 The Start Stop Measurement function key is a toggling function key that starts and stops measurement sampling SHOW TABLE GRAPH F2 The Show Table Graph function key toggles the display between Graph mode and Data mode RESET STATISTICS F3 The Reset Stat
58. measurement uncertainty How the Super Thermometer Measures In order to understand how to apply the specifications it is important to know how the Super Thermometer measures The fundamental measurement of the Super Thermometer is the resistance ratio It is the ratio between an unknown resistance R and a reference resistor R either internal or external If a resistance measurement is needed the ratio is multiplied by the value of the reference resistor to calculate the resistance of the R resistor for more information refer to Measurement Timing in the Menus and Screens section If a temperature reading is required the R resistance value is used to calculate the temperature using the cali bration coefficients entered into the Probe Library When ITS 90 is selected as the temperature conversion the R resistance is divided by the RTPW resistance at the triple point of water value that is entered in the probe definition The resulting value is called W The probe calibration coefficients and the ITS 90 equations are then applied to W to calculate the temperature reading of the probe Since W is a ratio between a probe s resistance at temperature R and its RTPW W measurement ac curacy relies primarily on ratio accuracy if both R R and RTPW are measured in close proximity in time Also this only applies if the RTPW was measured by the Super Thermometer and entered into the probe definition 1594A 1
59. mico iento dara aa 87 INPREAR lt n gt RS IDEN lt id gt VARINONE cross ici 87 INPIRS ADD lt i gasses ssnse a cance ade cdubaiusidechaceade cl i e dnd idad lidia 88 INE RS COUN A cosa r a beni nascesantepaahaug iones 88 INP RS DEL KiQ gt purana tine da Aras 88 INPRS FIRS eenean 88 INP lt n gt RS IDEN lt id gt VAR INONE suscitada din ni inicia 88 INPRS NEXT ta ai tia 89 INP RS OVEN STABO ccoo da dd 89 INP RS PAR lt ids lt name gt lt Valle gt sscassacseacesescseascencacheenetensancassacansaceussesants a aS 89 INP lt ns RS ROUT lt SOUICE Sci di di etter ad nd Rae 89 ROUT GLOSS CHAMME Spenn e ESR 90 ROUT CLOS STAD cc o ia AA 90 ROUTSCAN lt chamnelliS ad liebe 90 ROUT SCAN ADD lt chamel liSt gt econo nda dde Ea 91 ROUTISCAN ALT lt DOO ANS ici airis 91 ROUT SCAN DEL lt channelliS iio deidad RAS dnd 91 ROUTSCANREF lt Ch ae tronco aisla 91 ROUT SCAN REP lt value gt 91 ROUTISCANSTAT lt DOOlE AMS x coronados iones 92 8 7 3 80 8 7 3 81 8 7 3 82 8 7 3 83 8 7 3 84 8 7 3 85 8 7 3 86 8 7 3 87 8 7 3 88 8 7 3 89 8 7 3 90 8 7 3 91 8 7 3 92 8 7 3 93 8 7 3 94 8 7 3 95 8 7 3 96 8 7 3 97 8 7 3 98 8 7 3 99 8 7 3 100 8 7 3 101 8 7 3 102 8 7 3 103 8 7 3 104 8 7 3 105 8 7 3 106 8 7 3 107 8 7 3 108 8 7 3 109 8 7 3 11 8 7 3 11 8 7 3 11 8 7 3 11 8 7 3 11 8 7 3 11 8 7 3 11 8 7 3 11 8 7 3 11 8 7 3 11 8 7 3 120 8 7 3 121 8 7 3 122 8 7 3 123 8 7 3 124 8 7 3 125 8 7 3 126 8 7 3 127 8 7 3
60. n gt CURR DATA Reads a channel s actual sensing current INP lt n gt CURR STAN Sets a channel s Standby Current enable Standby Current Channel Settings INP PROB ADD Adds a new probe definition to the Probe Library ADD PROBE Probe Menu INP PROB COUN Reads the number of probe definitions in the Probe Library INP PROB DEL Deletes a probe definition from the Resistor Library DELETE PROBE Manage Probes INP PROB FIRS Reads the ID of the first probe in the Probe Library INP lt n gt PROB IDEN Assigns a probe definition to the channel ASSIGN PROBE Channel Menu INP PROB NEXT Reads the ID of the next probe in the Probe Library INP PROB PAR Sets the value of a setting in a resistor definition EDIT PROBE Probe Menu INP PROB TEST Reads the temperature calculated from resistance using the probe definition TEST CALCULATION Edit Probe INP REAR lt n gt RS IDEN Sets the reference resistor assigned to a rear reference resistor input ASSIGN RESISTOR Set Up Rs INP RS ADD Adds a new resistor definition to the Resistor Library ADD RESISTOR Define Resistor INP RS COUN Reads the number of resistor definitions in the Resistor Library INP RS DEL Delete the resistor ID from the Resistor Library DELETE RESISTOR Manage Resistors INP RS FIRS Reads the ID of the first resistor in the Resistor Library INP lt n gt RS IDEN INP RS NEXT INP RS OVEN STAB S
61. necessary when calibrating an SPRT When calibrating an SPRT typically both measurements of W are taken in close prox imity of time lt 8 hours elapsed time It is possible for the reference resistor drift to be negligible especially if the Super Thermometer is in a stable temperature environment To be sure reference resistor drift is correctly estimated the user should perform a test to determine actual reference resistor drift over the elapsed time One way to perform this test is to measure a very stable exter nal reference resistor over the actual time period using the internal reference resistor If it is not possible to measure the reference resistor drift it may be necessary to use the 24 hour stability specification resulting in a slightly larger total uncertainty Another alternative is to use an external reference resistor of very low drift 2 2 5 4 2 2 2 5 4 3 2 2 5 4 4 2 2 5 4 5 2 2 5 4 6 2 2 5 4 1 2 2 5 5 2 2 5 5 1 Introduction and Specifications Specifications Example 3 Measuring Zero Power Resistance The purpose of this example is to demonstrate how the Relative Current specification applies when performing a zero power measurement The zero power uncertainty calculated in this example would be added to the rest of the uncertainties involved in the measurement as explained in previous examples The intention of the zero power measurement is to remove measurement errors due to self heating of the SPRT
62. on each front panel measurement input channel The current can be verified using a current meter or a calibrated 4 wire resistor and digital voltmeter DVM If using a current meter connect the meter in series with the C1 and C2 terminals on one of the input channels as shown in Figure 18 1594A SUPER THERMOMETER NW cattbration Current Meter Figure 18 Current meter connection diagram 103 1594A 1595A Super Thermometer RATIO CALIBRATION F3 104 9 4 If using a calibrated resistor connect the resistor to all four terminals on one of the front panel measurement inputs and connect the voltmeter to the P1 and P2 terminals Refer to Table 20 for recommended resistance values The accuracy of the DVM should be better than 0 05 over the range of 0 02 V to 0 2 V Table 20 Recommended Resistors For Testing The Current CO 0 001 mA to 0 02 mA 10kQ 0 02 mA to 0 2 mA 0 2 mA to 2 0 mA 1000 2 0 mA to 20 0 mA To start the test press the CURRENT TEST F2 function key located in the Calibration menu The following fields are used to configure each step of the test CHANNEL the input channel being tested CURRENT the sensing current value POLARITY specifies the direction of the sensing current either forward or reverse Select the START F1 function key to begin the current test Constant current is applied to the specified chan nel allowing current measurements to
63. or disables OFF the audio indication that accompanies each key press The default option is ON START UP HELP determines whether the User Settings screen appears automatically after power on When set to ON the User Settings screen will appear as the first screen If the setting is OFF the Measurement Screen will appear instead The default option is ON 47 1594A 1595A Super Thermometer Main Menu 48 5 7 4 2 When the User Settings screen appears after power on when the Start Up Help setting is ON the User Set tings screen includes function key NEXT F1 This key leads to the Time and Date Settings screen see Sec tion 5 7 5 1 TIME DATE F1 on page 50 where the clock may be set to the local time FIELD SETTINGS F2 The Field Settings function key is used for selecting statistical fields to display in the Measurement Screen A particular set of statistical fields can be stored as a set and recalled using the RECALL MEMORY selection Four different sets can be stored in Recall Memory any of which can be restored to factory defaults using the RESTORE DEFAULT F1 function key see Default Statistical Fields table below Restore Default only af fects the Recall Memory selection that is currently display Individual statistical fields in any of the Recall Memory sets can be changed by first selecting the RECALL MEMORY set number pressing the ENTER key arrowing down to the field to be changed changing the field with the Le
64. or the entire Probe Library from the Super Ther mometer to the USB memory device When in the Manage Probes screen select either a single probe definition or ALL PROBES at the end of the list When WRITE FILE F2 is selected the name of the file to which the definitions will be written is displayed Pressing the ENTER key will open the Alpha Numeric Interface so the file name can be entered Pressing CONTINUE F1 writes the file to memory 37 1594A 1595A Super Thermometer Main Menu 38 9 7 2 5 3 9 7 2 5 4 9 7 2 5 5 5 7 3 If the 159x probe folder and prb file have not been created previously they will be created automatically when the file is written If the prb file already exists a newly written probe definition will be appended into the file However if the prb file already exists and all files are written to memory the prb file will be overwritten MOVE UP F3 The Move Up function key changes the order of the probe definitions in the Probe Library by moving the selected definition up one position until it reaches the top of the list MOVE DOWN F4 The Move Down function key changes the order of the probe definitions in the Probe Library by moving the selected definition down one position until it reaches the bottom of the list before ALL PROBES DELETE PROBE F5 The Delete Probe function key allows the user to delete probe definitions from the Probe Library If the Probe Library capacity of 10
65. require little maintenance The DWF connectors are designed to accept spade connectors by pressing the connector open bare wire inserted in one of the side holes while pressing the connector open and banana jacks inserted in the front For best results always use wires and connectors that are clean and free of corrosion and oxidation Getting Started Connecting a Probe or Resistor The DWF connectors are labeled with C1 C2 current connections and P1 P2 measurement potential con nections The guard connector is labeled with a G and is used for connecting to a probe or resistor guard or shield The guard connection may help reduce measurement noise Connect a probe or resistor as specified by the device s manufacturer to any one of the four measurement channels located on the front panel To prevent the possibility of applying too much current suspend measure ment sampling and configure the channel before making the connection 59 Making Measurements Measuring a Temperature Probe 7 Making Measurements 7 1 7 2 Introduction The Super Thermometer has been designed to allow quick and easy measurement setup while providing flex ible measurement options The purpose of this section is to guide the user through the configuration of the Super Thermometer for typical measurements Measuring a Temperature Probe The following instructions apply to the setup of both PRTs and thermistors for temperature measurement
66. screen displayed after power up unless the Start Up Help setting is enabled see Section 5 7 4 1 USER SETTINGS F1 on page 47 It may be recalled other screens by pressing and holding the EXIT key Menus and Screens Measurement Screen 25 1594A 1595A Super Thermometer Measurement Screen 26 5 6 1 5 6 2 or by pressing and releasing the MENU key then pressing the EXIT key The following describe each section of the Measurement Screen A 3 0 011618 c PROBE ID 5626 HEAN 0 009881 c CURRENT 1 0000 m STD DEY 0 001008 C Rs 25 9 TIHE 16 50 13 OVEN READY DATE 2010 05 19 B 0 015 0 013 0 011 0 009 0 007 16 52 16 54 ACTIVE CHANNEL 4 Z 00 00 31 STOP SHOH RESET CLEAR STOP MEASUREMENT TABLE STATISTICS GRAPH RECORDING Figure 9 Measurement Screen The following are the different sections of the Measurement Screen see Figure 9 followed by detailed de scriptions of each section A Channel Measurement Display Channel Summary Section Statistics Fields Data Graph Section Status and Alert Section moap Channel Measurement Display The Channel Measurement Display is located at the top of the screen and shows the most recently completed measurement and the channel from where the measurement came This portion of the screen is always visible even when other screens and menus are open Channel Summary Section The Channel Summary Section directly below the Channel Measurement Display on the
67. see tip below The result is 0 000018 C Multiplying by Ww 1 612 yields 0 000029 C Tip Most SPRT calibration reports list the Temperature versus W values of the SPRT in a table Typically the dT dW value at each temperature will be included in the same table dR dT can be calculated by inverting dT dW and multiplying by the RTPW of the SPRT Also dW dT can be calculated by simply inverting dT dW Uncertainty of the TPW Cell Uncertainty of the temperature of the triple point of water cell must also be included For this example the standard uncertainty of the triple point of water cell is 0 000050 C Multiplying by W 1 612 results in 0 000081 C T90 Reference Resistor Drift Possible drift of the 25 Q reference resistor between the TPW measurement and the 157 C measurement must be accounted for To reduce the possible error both measurements should be taken in close proximity in time For this example the 24 hour stability specification will be used This requires that both measurements are taken within the same 24 hour period The standard uncertainty due to drift of the reference resistor is 0 125 ppm This is converted to temperature by dividing 0 125 ppm by 1 0 x 10 and then multiplying by 1 612 The result is then divided by W sensitivity dW dT at 157 C which is 0 0038 The result is 0 000053 C Combining the Uncertainties At this point all of the uncertainties can be combined by root sum square RSS sinc
68. setting is only meaningful when Delta Mode is set to CHANNEL The RST command sets Delta Channel to 2 CALC lt n gt DELT DATA Example command CALC3 DELT DATA Example response 0 104428 Reads a channel s delta result see Section 5 7 4 2 FIELD SETTINGS F2 on page 48 Suffix lt n gt is the channel number 1 through 4 for the corresponding front channel input 5 through 14 for channels of the first attached scanner and 15 through 24 for channels of the second attached scanner No result will be available if no measurement has been acquired on a designated Delta Channel or if the two measurements have different units If no result is available no response is returned and error 230 Data cor rupt or stale is generated in the error queue CALC DELT MODE OFFS CHAN Query form CALC DELT MODE Alternate parameter DEF Sets the Delta Mode setting see Section 5 7 4 3 STATISTICS SETTINGS F3 on page 49 If the parameter is OFFS OFFSET the delta result is calculated by subtracting the Delta Offset setting s value from the channel s measurement If the parameter is CHAN CHANNEL the delta result is calculated by subtracting the measurement from the channel determined by the Delta Channel setting from the channel s measurement The RST command sets Delta Mode to the default setting which is OFFS CALC DELT OFFS lt value gt Query form CALC DELT OFFS Sets the Delta Offset setting see Section 5 7 4 3 STATI
69. string The error queue can hold up to ten errors If the queue over flows with errors the last error is replaced with a Queue overflow error message The Errors screen contains the CLEAR ERRORS F1 function key that when pressed clears all errors from the error queue CONFIG F3 The Configuration screen provides the means for storing the instrument configuration and recalling it later Several different configurations may be stored to allow quick and easy setup from user to user or from one ap plication to another The following function keys are located in this screen 5 7 5 3 1 5 7 6 Menus and Screens Main Menu STORE CONFIG F1 The Store Configuration function allows the user to store settings to a configuration file in either internal non volatile memory or a USB flash memory device The following settings are stored e The probe definition assigned to each channel e Enable state of each channel e Channel settings including the reference resistor selections e Resistor definition assigned to each reference resistor input e Scan settings e Timing settings e Digital filter settings e User Settings e Statistics fields settings e Statistics settings e Graph settings e Temperature unit e Recording settings The Store Configuration function does not store probe definitions resistor definitions time and date remote interface port settings password settings calibration parameters or recorded data M
70. the Rs input ASSIGN RESISTOR F1 The Assign Resistor function key opens the resistor definition library This is a list of Rs configurations that have been created by the user The resistor definition library may contain up to 50 resistor definitions Every definition in the library must have a unique ID Also displayed in the resistor definition library at the end of the list are factory default options VARIABLE RESISTANCE and NO RESISTOR The VARIABLE RESISTANCE option is used when the Rs resistance will vary such as when a SPRT is being used as a reference resistor When in this mode measurement output will be in ratio only If the NO RESISTOR option is chosen the Rs Input cannot be used as a reference resistor connection DEFINE RESISTOR F2 The Define Resistor function key displays the resistor definition library The displayed function keys are used to create new Rs resistor definitions or edit definitions stored in the resistor definition library The following describe each function key ADD RESISTOR F1 The Add Resistor screen is used to create a new Rs definition using the following configuration fields and function key RESISTOR ID used to identify the reference resistor Pressing the ENTER key while the RESISTOR ID field is highlighted will open the Alpha Numeric Interface to allow entry of a unique ID RESISTANCE VALUE the resistance value of the Rs reference resistor This resistance value is used to calcula
71. the com port Configuring the RS 232 Serial Port The RS 232 serial port implements the RS 232 communication standard This port is always enabled The RS 232 parameters are 8 data bits one stop bit and no parity The baud rate is user selected The physical port is a 9 pin D connector To configure the port use the following to open the RS 232 configuration screen 1 Press the MENU key 2 Select the SYSTEM MENU F5 function key 3 Select the REMOTE INTERFACE F2 function key 4 Select the SERIAL F1 function key The RS 233 configuration settings are BAUD RATE and LINEFEED Configure these settings as needed Configuring the IEEE 488 Port The IEEE 488 port implements a common standard parallel instrument interface bus The port is disabled by default and must be enabled to be used The user may specify the bus address It provides the following IEEE 488 defined capabilities SH1 AH1 T6 TEO L4 LEO SR1 RLO PPO DC1 DTO CO E2 The IEEE 488 configuration settings are PORT ENABLE ADDRESS and TERMINATION To make changes to these settings use the following steps to go to the IEEE 488 configuration screen 1 Press the MENU key 2 Select the SYSTEM MENU F5 function key 3 Select the REMOTE INTERFACE F2 function key 4 Select the IEEE 488 F4 function key To use the port ensure PORT ENABLE is set to ON Enable and set ADDRESS to an address that is not be ing used by another device on the IEEE 488 bus The add
72. the instrument to be controlled as a USB peripheral from a computer COMPUTER 9 pin subminiature D type serial port that can be used to control the instrument via RS 232 IEEE 488 IEEE 488 Input Output that is compatible with IEEE 488 interface and the IEC 625 Bus for controlling the instrument 21 1594A 1595A Super Thermometer Rear Panel Features 22 4 3 4 4 3 5 Line Voltage Connection Figure 6 Power Entry Module The PEM Power Entry Module located on the rear panel connects the Super Thermometer to line voltage It contains the Line Voltage Power Switch the Line Voltage Fuses and the Line Voltage Selector See the Line Voltage and Fuses section for configuration and connection instructions Earth Ground Connection bd The Earth Ground Connection is provided to allow connection to earth ground This connection can help im prove measurement noise It is not intended to replace the ground connection provided through the line voltage cord 5 5 1 5 2 Menus and Screens Changing Settings Menus and Screens Introduction This section provides detailed description of the Super Thermometer menus and screens The menus and screens are designed to allow the user to quickly and easily set up the instrument for measurement while also providing many configuration options Note that some function keys are located in multiple locations in the menu system for convenience Since the S
73. timeout period the socket will close automatically and a new connection will then be accepted In applications where there might normally be a long period between messages it might be necessary to in crease or disable the keep alive timeout to prevent the connection from being closed automatically 8 7 3 109 8 7 3 110 8 7 3 111 8 7 3 112 8 7 3 113 8 7 3 114 8 7 3 115 Remote Operation Interface Commands SYST COMM SOCK MAC Example response 00204A9AF1A2 Reads the network port s Hardware MAC address see Section 8 2 Configuring the Network LAN Port on page 65 SYST COMM SOCK MASK lt IP address gt Example command SYST COMM SOCK MASK 255 255 255 0 Query form SYST COMM SOCK MASK Sets the network port s Subnet Mask setting see Section 8 2 Configuring the Network LAN Port on page 65 Parameter lt IP address gt is a string specifying the subnet mask using IP dot notation This setting is only meaningful when DHCP is OFF The query form returns the value of the Subnet Mask setting when DHCP is OFF and returns the dynamically provided subnet mask when DHCP is ON SYST COMM SOCK NAME lt name gt Example command SYST COMM SOCK NAME MY 1595A Query form SYST COMM SOCK NAME Alternate parameter DEF Sets the network port s Host Name setting see Section 8 2 Configuring the Network LAN Port on page 65 Parameter lt name gt is a string specifying the Host Name The
74. value is 01 00 00 This setting is only relevant when Stop Timer Enable is ON AUDIO INDICATION enables or disables the audio alert that tells the user when the stop timer elapses and measurement stops The default option is ON The Sample Period Display Interval and Average Enable settings in the Timing Settings menu can be auto matically configured by selecting one of the following preset function keys a full description of each field can be found later in this section PRESET NORMAL F1 is used for most applications This setting provides a balance between speed and precision Sample Period and Display Interval are both set to 2 seconds and Average Enable is set to ON 5 73 3 5 7 3 3 1 C S 5 1 3 4 Menus and Screens Main Menu PRESET PRECISION F2 sets the timing settings for minimal measurement noise and settling error with most thermometer probes Sample Period is set to 2 seconds Display Interval is set to 10 seconds and Aver age Enable is set to ON PRESET FAST F3 is used to configure the Super Thermometer for the fastest possible measurements Sample Period and Display Interval are both set to 1 second Measurement noise and electrical settling errors may be greater in Fast mode Fast mode is useful for certain applications such as probe response time testing PRESET LONG F4 sets the timings settings for better results with probes that exhibit long electrical set tling times Measurement nois
75. 0 then multiply by 13 1594A 1595A Super Thermometer Specifications 14 2 2 5 5 2 2 2 5 5 3 2 2 5 6 2 2 5 6 1 2 2 5 6 2 2 2 5 6 3 257 Q Divide the result by the sensitivity of the PRT dR dT at 420 C This can be found in the PRT calibra tion report For this example 0 4 Q C is used The resulting uncertainty is 0 0013 C Measurement Noise at 420 C The noise of the measurement at 420 C is observed using the Standard Error of the Mean statistic field of the 1595A In this example it is 0 00003 C Combining the Uncertainties To calculate the entire uncertainty of the measurement the standard uncertainties from the 1595A should be combined with the k 1 PRT calibration uncertainty at 420 C The standard uncertainties are combined by RSS and then multiplied by the required coverage factor Example 5 Measuring a 10 kQ Thermistor In this example a 1595A is used to measure a 10 kQ thermistor probe at 0 C The 1595A accuracy when measuring the thermistor probe is based on the following e Resistance accuracy of the 1595A e Measurement noise Resistance Accuracy First calculate the 1595A absolute resistance accuracy at 26839 94 the resistance of the 10 k Q thermistor probe at 0 C when using the 10 k Q internal reference resistor The one year absolute resistance accuracy is 4 ppm of reading k 1 This is converted to temperature by dividing 4 ppm by 1 0 x 10 and multiplying by 26839 94
76. 0 definitions has been reached a probe definition has to be deleted before adding an other definition A single highlighted probe definition can be highlighted and then deleted or all probe definitions can be delet ed if ALL PROBES is selected A message prompts the user to confirm the delete action before it takes place MEASURE MENU F3 HEASURE MENU PRESS A FUNCTION KEY BELOH TIMING SETTINGS Figure 12 Measure Menu Screen The Measure Menu contains the function keys needed for setting up channel scanning measurement timing digital filter settings controlling measurement recording and performing zero power measurements 5 73 1 5 1 3 2 Menus and Screens Main Menu The following are complete descriptions of each function key SCAN SETTINGS F1 Scan Settings is used to set up channel scanning The Super Thermometer has several scan options that are configured using the following fields SCAN ENABLE turns scanning on or off by using the Left Right Arrow Keys and pressing the ENTER key ON enables automatic sequencing through all enabled channels OFF disables scanning so only one channel is measured as selected by the user REPEAT COUNT determines how many times a channel is measured before the Super Thermometer contin ues to the next channel in the scan sequence The setting has a range of 1 to 100 ALTERNATE REFERENCE automatically measures the reference channel after each individual channel is measured in th
77. 05 Reads the time remaining of the Ratio Self Calibration The time remaining is a number of seconds 101 1594A 1595A Super Thermometer Interface Commands 102 8 7 3 138 8 7 3 139 8 7 3 140 8 7 3 141 8 7 3 142 8 7 3 143 TEST LIN TOL lt n gt Example response 0 8 Reads a Ratio Self Calibration test tolerance see Section 9 Calibration on page 103 Suffix lt n gt specifies the test number of which the error tolerance is requested see Section 8 7 3 134 TEST LIN REP lt n gt on page 101 The response has units of 1x10 6 TEST SYST ABOR Cancels a system self test see Section 9 Calibration on page 103 A system self test is also canceled if the RST command is received TEST SYST INIT Starts a system self test see Section 9 2 SYSTEM TEST F1 on page 103 If a system self test is already in progress error 213 Init ignored is generated in the error queue While a system self test is in progress the display shows the System Test status screen Also the 0 bit of the Operation Status Condition Register is set while the test is in progress and is cleared when the test ends or is aborted TEST SYST REP lt n gt Example response 0 Reads the report from a system self test Parameter lt n gt when given a value of or omitted specifies the report from the power on system self test A value of 2 specifies the report from the latest system self test if one was performed subsequent to t
78. 2 35 Subrange 3 35 Subrange 4 35 Subrange 5 35 Subrange 6 35 Subrange 7 35 Subrange 8 35 Subrange 9 35 Subrange 10 35 Subrange 11 35 Symbols Used 1 system clock 50 System Menu 50 SYSTEM MENU 29 SYSTEM MENU F5 50 system self test 102 SYSTEM TEST F1 55 103 SYST ERR 52 T TCP IP 51 65 TCP port number 5025 65 TEMPERATURE 30 Temperature Resolution 82 TEMPERATURE RESOLUTION 47 57 temperature unit 56 102 TEMPERATURE UNIT F5 50 Terminal Screen 68 TERMINATION 52 69 TEST CALCULATION F1 36 text field 23 thermal response 40 THERMISTOR 34 36 Time 50 99 TIME 45 48 50 58 107 TIME DATE F1 50 TIME DATE PROTECTION 55 Timer Beep 83 TIMER DURATION 40 TIME REMAINING 45 TIME SPAN 49 Timing 39 TIMING SETTINGS F2 39 T R 87 119 1594A 1595A Super Thermometer TRACE 50 T R POLYNOMIAL 36 TYPE 34 U Unit 56 UNIT 50 unlimited 79 UNLIMITED 49 Unlimited mode 49 Unpacking 15 UPDATE FIRMWARE F5 54 USB 17 21 32 41 42 53 65 81 97 rear 68 USB F2 51 USB FILE 42 User Settings 19 USER SETTINGS F1 47 User Settings Screen 57 User s Guide 15 V VARIABLE RESISTANCE 31 VERTICAL CENTER 49 VERTICAL SPAN 49 VIEW DATA F2 42 VIEW PREVIOUS F2 46 Ww warm up period 9 18 Warnings 1 Warranty ii Web Interface 21 68 web page 52 Weight 9 Width 9 WRITE FILE F2 32 37 WRITE FILE F4 43 WT90 9 Z Zero Power 8 13 30 43 63 ZERO POWER MEASUREMENT
79. 232 Serial Port on page 69 SYST COMM SOCK ADDR lt IP address gt Example command SYST COMM SOCK ADDR 147 120 0 11 Query form SYST COMM SOCK ADDR 95 1594A 1595A Super Thermometer Interface Commands 96 8 7 3 105 8 7 3 106 8 7 3 107 8 7 3 108 Sets the network port s IP Address setting see Section 8 2 Configuring the Network LAN Port on page 65 Parameter lt IP address gt is a string specifying the address using IP dot notation This setting is only allowed when DHCP is OFF The query form returns the static IP address when DHCP is OFF and returns the dynamically assigned IP ad dress when DHCP is ON SYST COMM SOCK CONT OFF ON QUER Query form SYST COMM SOCK CONT Sets the network port s Control Enable setting This determines whether the instrument accepts control com mands received via the network port Allowed parameter values are OFF ON and QUER When the setting is OFF the network port cannot be used to control the instrument and all commands are ignored When the setting is ON commands may be used to control and operate the instrument When the setting is QUER commands that read settings and data are al lowed but commands that change settings are ignored The default setting is QUER SYST COMM SOCK DHCP lt boolean gt Query form SYST COMM SOCK DHCP Sets the network port s DHCP Enable setting see Section 8 2 Configuring the Network LAN Port on page 65 SYST COMM SOCK
80. 3 65 8 7 3 66 A channel s Calculation setting will be changed from temperature to resistance see Section 8 7 3 27 CALC lt n gt TYPE TEMP RES RAT on page 80 if its Reference Resistor Rs setting was set to the speci fied input and the resistor assignment for the input is set to variable A channel s Reference Resistor Rs setting will be changed from the specified input to the internal 100 resistor if the resistor assignment for the input is being set to none INP RS ADD lt id gt Example command INP RS ADD R25_01322 Password protection Resistor Protection Adds a new resistor definition to the Resistor Library Before a resistor can be assigned to an input see com mands INP RS FRON IDEN and INP RS REAR IDEN and used as a reference resistor the resistor must have its definition added to the Resistor Library Parameter lt id gt is the ID of the new resistor definition It can contain letters numerals hyphens periods for ward slashes and underscores It must be between one and 22 characters in length inclusive If lt id gt is different from all other IDs in the Resistor Library and space is available in the Resistor Library a new resistor definition will be added and given the specified ID The resistor parameters will initially be set to default values The command INP RS PAR should be used to set the parameters If lt id gt matches the ID of a resistor already in the Resistor Library or the Resistor Library
81. 595A Super Thermometer Specifications 10 2 2 5 3 2 2 5 3 1 2 2 5 3 2 2 2 5 3 3 2 2 5 3 4 When calibrating an SPRT on the ITS 90 the W value is measured at required fixed point temperatures This is done by measuring the resistance of the SPRT at a fixed point temperature followed immediately by measurement of the RTPW This is repeated for each temperature point Once again the ratio accuracy of the Super Thermometer applied to each measured resistance determines the accuracy of the resulting W value Example 1 Measuring an SPRT This section explains how to calculate the uncertainty of a temperature measurement when measuring a calibrated 25 5 2 SPRT at 157 C using the internal 25 Q reference resistor in a 1595A Since the Super Thermometer measurement accuracy is directly related to other sources of uncertainty additional uncertainties will be included in the calculation for completeness Since an SPRT can be measured with different techniques two different calculations will be presented to rep resent the most common and recommended techniques Measuring With Updated RTPW In this example the RTPW of the SPRT is measured by a 1595A and entered into the SPRT s probe definition in the 1595A Then the SPRT is measured at 157 C in temperature mode using the coefficients entered in the SPRT probe definition As explained above this measurement technique primarily uses the ratio accuracy of the Super Thermometer
82. AVE F2 36 Scan Enable 90 SCAN ENABLE 39 scan list 91 Scanner 20 Scanner Connection 20 scanning 90 Scanning 62 SCAN SETTINGS F1 39 Screens 23 Screen Saver 47 SCREEN SAVER DELAY 47 57 SCREEN SAVER ENABLE 47 57 SDC 52 self heating 30 43 63 SELF HEATING 45 sensing current 30 40 84 103 SENSING CURRENT 30 45 SENSING CURRENT 1 45 SENSING CURRENT 2 45 SENSING CURRENT 3 45 Sensing Current Test 100 SE OF MEAN 48 SERIAL F1 51 Serial Number 50 serial port 21 69 SETTLE TIME 44 63 SETTLING 27 SETUP key 18 29 SET UP Rs F1 31 SHOW TABLE GRAPH F2 28 sign key 18 23 SI Unit Lock 50 SIUNITLOCK 56 108 sliding window 49 spade connectors 58 Spanish 15 19 47 82 Specifications 5 spread 79 SPREAD 48 standard deviation 48 78 STANDARD ERROR 45 107 standard error of the mean 48 79 STANDARD RESISTANCE 107 standby 18 Standby Current 30 84 STANDBY CURRENT 30 Standby Current Check 109 START Fl 44 START STOP MEASUREMENT F1 28 START STOP RECORD F5 28 Start up Help 82 START UP HELP 47 58 static IP address 66 Statistics 48 49 Statistics Fields 27 STATISTICS MODE 49 STATISTICS SETTINGS F3 49 Status and Alert Section 27 STD DEV 45 48 STD DEV 1 45 STD DEV 2 45 STD DEV 3 45 STEP 45 stop timer 40 84 STOP TIMER ENABLE 40 Storage relative humidity 9 storage space 53 Storage temperature 9 STORE CONFIG F1 53 Subnet Mask 67 97 SUBNET MASK 52 Subrange 1 35 Subrange
83. Built in functions automate all of the test and calibration steps except Current Test The functions are found in the Calibration menu Go to the Calibration menu by pressing the MENU key then the SYSTEM MENU F5 function key followed by the CALIBRATION F5 function key The unit should be allowed to warm up for at least 30 minutes before performing any calibration Self Test can be performed at any time during or after the warm up period IMPORTANT Make sure the OVEN indicator on the Measurement Screen shows READY before performing any calibration SYSTEM TEST F1 System Test performs several internal functionality tests and reports the results It is not necessary to allow the Super Thermometer to pass through the required warm up period before performing this test To run System Test press the SYSTEM TEST F1 function key Press the START F1 function key to begin the system self test As the test proceeds the screen indicates the time remaining The user may press the CANCEL F5 function key or EXIT key to cancel the test When the test is finished the results are displayed If a failure is indicated contact the nearest Fluke Authorized Service Center CURRENT TEST F2 The Current Test allows the user to test the sensing current by applying non reversing current to the front panel measurement input channels This is a verification test only no adjustment is made It is recommended to measure at least 0 01 mA 1 0 mA and 1 414 mA
84. CK DHEP lt DOGlE ANS ws ceases cocino odiado dd idad da ida SYST COMM SOCK GAT lt IP address gt ooocooocoiiocinncccooconccconncoon ono nnonnn conc cnnn nro nn non cnn ranas SYST COMM SOCK KEEP lt seconds gt SYS RCOMM SOCKMA CR iia diia SYST COMM SOCK MASK lt IP address gt SYST COMM SOCK NAME lt name gt cccccccccececeeeeeeeeeeeeeceeeeeseseeceeeeseeeesseecceeenseeeteeeneeeneesesees SYSECOMM USB STAT lt DOOIGANS rsisi ri dao E r SYSTCONE GHAN rs cla lid 97 SYSTCONR SCANO pico A idad dai A ata ia dA dee 97 SYSEDATE lt year gt lt moOnth gt lt QAVS iena a isis 97 SYST ERR Preia aE di 98 SYST KLOC DO dl do 98 SYSTPASS ODO ins A di desd A din ida 98 SS TRAS CENAS o aiii 98 SYST PASS CENISTA Paisanos ia tie dre 99 SYST PASS GROU MEAS lt boolean gt SYST PASS GROU PROB lt boolean gt SYSEPASS GROURES lt DOO GAN Saag acallar rin rele SYST PASS GROU TIME lt boolean gt SYST PASS NEW lt current password gt lt ne Ww paSSWOrd gt eccecceeceeceeeeeeeereeeeteeneeententenats 99 SYSTEPONIMIN car di ea aaa 99 SYSETIME lt hours lt minute gt lt SOCON CS escalares EEE 99 SYST TIME DAYL OFF INAMJEUR cocos onda 99 TEST CURR CONF lt channel gt lt current gt lt polarity gt ceccecceeceeeeeeceeeeeseeseeeeseeeneeeeeeaeeees 100 TESI CURRESTAT lt DOOlG ANS sacsise na conieneecanannn say Acc ean da Aaa 100 TESTE UINGAB OUR cats ee cate cateseuat li E Ecos 100 TESTING RAR 2 caoscncie staves
85. DATA REC MEMINTUSB BO TH iensen a a ai 81 DATA REC ESTAT DOM ecos 81 DISPZALER CLEA cusco a a Aa 81 DISPALERNRE DR e a ele sd 81 DISP DATE FORM YMD DMY MDY dad DISP IDEC FORMIPER CONIM scooter a DISP FIEL FEED lt O gt isc N ladra Rai isidro desa 81 DISP FEIE MEM Osorio ad 82 DISP FIEL MEM lt nT gt FEED lt N2 gt lt feed gt ninti ie naei ai iaaa 82 DISR HEUP DOC AMS an e e EE 82 DISP LANG ENGLISH CHINESE JAPANESE SPANISH GERMAN FRENCH RUSSIAN 82 DISP TEMP DIG lt digitS Sunn e E 82 DISP WARN DUE lt p00IEAN S orinni ysis a e E EA EEA EEE EEES EEE aa 82 DISPWARN ITS lt DOO CO a cad 83 FETC lt CHanmel Sneen a a Vie don ana aa a dada EN SAAR 83 INIECONT lt boO0lE gt si a a a E E S 83 INTE STOP BEEP lt DOOlG ANS inga i aa AE E iE EEE Eaa 83 INIT STOP DUR lt value gt INIT STOP STAT lt boolean gt INIESTOP TIME eneren ateo INPAS CURR CUrreNts oscine de cand nee li di Ea 84 INP lt 0 CURR DATA oa aaea aa E E atten 84 INP lt n gt CURR STAN lt boolean gt E INP PROB ADD idesiu E r a E E A EE INP PROB COUN Pico ci e danced ade et eae add dk Re did INP PRO BADE iOS tacts varias irreales INP PROB FIRS etni aE tie canes A E Eaa INP2mS PROB IDEN SIAS aci ae a A aaa e a A A EEES EEE ER INP PROB NEX T pepan i a A add ida did 85 INP PROB PAR lt id gt lt NaMe gt lt VAlU gt cecceccceeceeeceeeceeeeeeneeeeseeeeeeecseeceseeseeeneeesesteneeneeeses 86 INP PROB TEST lt id gt lt reSistanCe gt
86. EMORY DEVICE specifies to which memory device the configuration is stored The options are USB and INTERNAL The default option is INTERNAL Up to 50 configuration files may be stored internally The number of files stored on a USB device is limited only by the storage space available FILE NAME specifies the name of the configuration file It is edited or entered by first pressing the ENTER key which opens the Alpha Numeric Interface The file name may have up to 24 characters The user must press the SAVE F3 function key when finished If the file does not exist it is created If it already exists the contents of the file are replaced The file name extension txt 1s automatically added to the file name when the file is created Once the memory device and file name are selected the user presses the STORE F1 func tion key to proceed USB configuration files are written to a folder named 159x config on the USB memory device and have the extension txt When writing the file to a USB memory device a formatted USB memory device must be inserted into the USB socket on the front panel RECALL CONFIG F2 The Recall Configuration screen displays the configuration files that have been saved to memory The location of the file s must be selected using the MEMORY DEVICE field The options are INTERNAL and USB Once the memory location is selected pressing ENTER or the CONTINUE F1 function key will open the list of configu
87. ER AV ERR agrena OO E EE 77 878 14 CALC SNS AVER GLEA gsc ia AS E IREE 77 STAS CALGAVER COUN eval sensus a r E Eat 77 BT S10 CALCIS AVER MAK ees n A A EE EEES 78 Smole CALCIS AVEO MING nad oa otr E 78 8318 CAUCENSAVERISDEV iia dere betes 78 BAS 19 gt CALC Sn SAVER as ee 79 87 320 CALC NS AVER SPR coi tlf aa 79 E O ape e SiS 1270 NOE PORNO SP UU 79 87322 CALC AVER TCON NORMIMOVevouciineroon abad deter dd 79 83 28 CALEC DEERCHAN SChaninel gt ear a tek Hedi Mes eaves 79 1594A 1595A Super Thermometer vi 8 7 3 24 8 7 3 25 8 7 3 26 8 7 3 27 8 7 3 28 8 7 3 29 8 7 3 30 8 7 3 31 8 7 3 32 8 7 3 33 8 7 3 34 8 7 3 35 8 7 3 36 8 7 3 37 8 7 3 38 8 7 3 39 8 7 3 40 8 7 3 41 8 7 3 42 8 7 3 43 8 7 3 44 8 7 3 45 8 7 3 46 8 7 3 47 8 7 3 48 8 7 3 49 8 7 3 50 8 7 3 51 8 7 3 52 8 7 3 53 8 7 3 54 8 7 3 55 8 7 3 56 8 7 3 57 8 7 3 58 8 7 3 59 8 7 3 60 8 7 3 61 8 7 3 62 8 7 3 63 8 7 3 64 8 7 3 65 8 7 3 66 8 7 3 67 8 7 3 68 8 7 3 69 8 7 3 70 8 7 3 71 8 7 3 72 8 7 3 73 8 7 3 74 8 7 3 75 8 7 3 76 8 7 3 77 8 7 3 78 8 7 3 79 CALC lt n gt DELT DATA i sss cs sce vguseu sant ideales nte ondo asii 80 CALC DEMODE OFFSICHAN bvucsces secs sits cusie coh enu ap a AR sd 80 CALC DET OFFS Valued iii dai caian dades dad Riad in A sas 80 CALC lt ASTYRE TEMP IRESIRA esse En 80 DATA REC AUL lt BOOIG ANS iia nd ada aE EE rA EEE a 80 DATA REC FILE lt mame se de EEr S 81
88. GAT lt IP address gt Example command SYST COMM SOCK GAT 147 120 0 1 Query form SYST COMM SOCK GAT Sets the network port s Gateway setting see Section 8 2 Configuring the Network LAN Port on page 65 Parameter lt IP address gt is a string specifying the address of the gateway server using IP dot notation This setting is only meaningful when DHCP is OFF The query form returns the value of the Gateway setting when DHCP is OFF and returns the dynamically provided gateway address when DHCP is ON SYST COMM SOCK KEEP lt seconds gt Example command SYST COMM SOCK KEEP 3600 Query form SYST COMM SOCK KEEP Alternate parameter DEF MIN MAX Sets the network port s keep alive timeout setting Parameter lt seconds gt is the keep alive timeout value in seconds This setting determines the length of time in seconds after which the socket is automatically closed if there is no activity At power on the setting defaults to 60 seconds If a different timeout is desired the settings can be changed using this command If the setting is set to 0 the keep alive timeout will be disabled The keep alive timeout may be useful if a connection is dropped unexpectedly such as if the network or cli ent fails The network socket of the Super Thermometer might otherwise remain open indefinately and no subsequent socket connection request would be accepted With the keep alive timeout enabled if no activity is detected during the
89. Main Menu CHANNEL the measurement channel PROBE the ID of the probe TIME REMAINING the amount of time left to complete the zero power sequence of measurements in minutes and seconds 00 00 STEP indicates the current measurement step of the sequence SENSING CURRENT the sensing current implemented in the measurement step PHASE indicates whether measurement is in SETTLING or MEASURING mode MEAN the arithmetic mean of the measurements taken in the current step STD DEV the standard deviation of the measurements used to calculate the mean CANCEL F1 terminates the zero power measurement sequence Once the Zero Power Measurement sequence is complete the following results are reported on the screen DATE the date of the measurement TIME the time when the measurement finished CHANNEL the channel measured PROBE the ID of the probe configuration ZERO POWER RESULT the calculated zero power value SELF HEATING the amount the probe measurement changes due to self heating STANDARD ERROR the resulting standard error of the mean of the zero power result DRIFT indicates the difference between the nominal current measurements applies only if Repeat Nominal is enabled SENSING CURRENT 1 the measurement current used in the first step of the sequence MEAN 1 the mean of the measurements in the first step STD DEV 1 the standard deviation of the measurements in the first step SENSING CURRENT 2 the measurement curr
90. N Example query response 1 2 3 4 Enables channels for scanning Each of the channels specified in lt channel list gt is enabled this is equivalent to setting each channel ON in the Channel Menu and all other channels are disabled The Scan Enable setting is set to ON see Section 5 7 3 1 SCAN SETTINGS F1 on page 39 If measurement is disabled the channels will not actually be scanned and measured until measurement is started 8 7 3 74 8 7 3 75 8 7 3 76 8 7 3 77 8 7 3 78 Remote Operation Interface Commands A channel number in lt channel list gt may be 1 through 4 for the corresponding front channel input 5 through 14 for channels of the first attached scanner and 15 through 24 for channels of the second attached scanner If a scanner is attached channel 1 will not be enabled A range of channels may be conveniently included in the channel list by using a colon between the channel range limits The query response lists all enabled channels separately If scanning is off the query will return an empty channel list The RST command enables channel 2 and disables all others ROUT SCAN ADD lt channel list gt Example command ROUTE SCAN ADD 5 6 7 Adds channels to the scan list Each of the channels specified in lt channel list gt is enabled this is equivalent to setting each channel ON in the Channel Menu The Scan Enable setting is set to ON see Section 5 7 3 1 SCAN SETTINGS F1 on page 39 If
91. ONLY the web page will not be fully functional IEEE 488 F4 The IEEE 488 function key opens the IEEE 488 configuration screen with the following configuration fields PORT ENABLE determines whether the IEEE 488 port is enabled ON When the port is disabled no communications can occur The default option is OFF ADDRESS is the IEEE 488 address assigned to the Super Thermometer It must be different than all other equipment on the IEEE 488 bus The address may be set to any number between and 30 inclusive The default setting is 22 TERMINATION determines whether a carriage return character ASCII code 13 or linefeed character ASCII code 10 terminates a response The default option is LINEFEED An IEEE 488 EOI message also ac companies the final character of every transmission The IEEE 488 port accepts either or any combination of a linefeed carriage return or EOI as a terminator The CLEAR INTERFACE F1 function key is used to clear the input and output buffers and reset the IEEE 488 interface just as if the IFC or SDC control message was received ERRORS F5 The Errors screen allows the user to view errors stored in the remote interface error queue They can also be read using the remot command SYST ERR see Section 8 Remote Operation on page 65 The screen shows a list of all the errors with the earliest error at the top Errors are identified with their queue position number error code and message
92. OV on page 79 The range is 1 through 100 and the default is 100 The RST command sets Sample Count to 100 CALC lt n gt AVER MAX Example command CALC3 AVER MAX Example response 231 928833 Reads a channel s statistical maximum see Section 5 7 4 2 FIELD SETTINGS F2 on page 48 Suffix lt n gt is the channel number 1 through 4 for the corresponding front channel input 5 through 14 for channels of the first attached scanner and 15 through 24 for channels of the second attached scanner The returned value has the same units as the measurement returned by the FETC command If the calculation is temperature the unit of measurement is determined by the Unit setting see Section 5 7 4 5 TEMPERA TURE UNIT F5 on page 50 If no result is available no response is returned and error 230 Data corrupt or stale is generated in the error queue CALC lt n gt AVER MIN Example command CALC3 AVER MIN Example response 231 928207 Reads a channel s statistical minimum see Section 5 7 4 2 FIELD SETTINGS F2 on page 48 Suffix lt n gt is the channel number 1 through 4 for the corresponding front channel input 5 through 14 for channels of the first attached scanner and 15 through 24 for channels of the second attached scanner The returned value has the same units as the measurement returned by the FETC command If the calculation is temperature the unit of measurement is determined by the Unit setting see
93. Port SYST COMM GPIB TERM Sets the IEEE 488 port s Termination setting Termination IEEE 488 Port SYST COMM SER BAUD SYST COMM SER LIN Sets the serial port Baud Rate setting Sets the serial port Linefeed setting Baud Rate Serial Port Linefeed Serial Port SYST COMM SOCK ADDR Sets the network port s IP Address setting IP Address Network Port SYST COMM SOCK CONT Sets the network port s Control Enable setting Control Enable Network Port SYST COMM SOCK DHCP SYST COMM SOCK GAT Sets the network ports DHCP Enable Sets the network port s Gateway setting DHCP Enable Network Port Gateway Network Port SYST COMM SOCK KEEP Sets the network port s keep alive timeout SYST COMM SOCK MAC Reads the network ports Hardware MAC address Hardware MAC Network Port SYST COMM SOCK MASK Sets the network port s Subnet Mask setting Subnet Mask Network Port SYST COMM SOCK NAME Sets the network port s Host Name Host Name Network Port SYST COMM USB STAT Sets the USB port s Port Enable Port Enable USB Port SYST CONF CHAN Reads the number of available channels SYST CONF SCAN Reads the model number of an attached scanner SYST DATE Sets the Date of the system clock Date Time and Date SYST ERR Reads the next error in the error queue SYST KLOC Sets the front panel key lock SYST PASS CDIS Disables access to password protected settings
94. Progress Bar 27 Measurement range 9 Measurement Screen 25 Measure Menu 38 MEASURE MENU 28 MEASURE PROTECTION 55 MEASURE TIME 44 63 Measuring an SPRT 10 Measuring a PRT 13 Measuring a Temperature Probe 61 Measuring a Thermistor 14 Measuring Resistance Ratio 62 MEMORY DEVICE 42 53 MENU 18 Menu Navigation 24 Menus 23 Menu System 24 minimum 78 MINIMUM 48 Model 50 MOVE DOWN F4 33 38 MOVE UP F3 33 38 moving window 79 Multiplexer 20 N n 79 N 48 Network 51 NETWORK F3 51 Network port 51 nominal current 30 43 86 NOMINAL CURRENT 35 non volatile 41 numeric keys 18 O Operating relative humidity 9 operating temperature 9 oven 89 OVEN 27 P P1 59 P2 59 password 24 99 PASSWORD 54 PASSWORD F4 54 PEM 15 22 117 1594A 1595A Super Thermometer PHASE 45 POLARITY 104 POLYNOMIAL 35 36 PORT ENABLE 51 52 69 port number 65 Power Entry Module 15 Power Standby key 18 PRESET FAST 92 PRESET FAST F3 41 PRESET LONG 92 PRESET LONG F4 41 PRESET NORMAL 92 PRESET NORMAL F1 40 PRESET PRECISION 92 PRESET PRECISION F2 41 PROBE 45 probe definition 29 61 85 86 Probe Definitions 54 PROBE ID 26 Probe Library 29 34 37 54 61 85 86 Probe Library Capacity 38 Probe Menu 34 PROBE MENU 28 PROBE MENU F2 34 PROBE PROTECTION 54 PRT 34 PT 100 35 86 Q Queue overflow 52 R RO 35 86 Rack Mounting 16 Rack Mount Kit 15 ratio 9 39 55 104 RATIO 30 48 Ratio Accur
95. READY If the oven stability indicator never changes to READY contact a Fluke Authorized Service Center The unit could still be used with an external reference resistor since the internal oven has no affect when using external resistors Graph of measurements jumps or stair This is normal if the temperature being measured is increasing or decreasing steps faster than the digital filter is able to track To eliminate this effect temporarily disable the digital filter The display shows negative resistance The measurement cable is not connected correctly The USB memory stick does not work Plug the memory stick into the front panel USB port and wait for about 10 seconds for the system to recognize the device When recording data to the memory stick wait for the flashing read write LED on the memory stick to stop flashing before removing it Make sure the memory stick id formatted to Fat 32 This can be done by inserting the memory stick into a personal computer and right clicking on the drive letter of the memory stick and selecting properties Make sure the memory stick is compatible with the Linux operating system 2 6 or greater Unit will not power up Make sure the main power switch located on the back of the unit is turned on Check the fuses in the back of the unit Check the power cord The display is in the wrong language If the Super Thermometer is inadvertently set to the wrong language the user can open the User Settings screen in E
96. Reads the linearity self test report TEST LIN STAT Reads the state of the linearity self test LINEARITY TEST Calibration LINEARITY TEST Calibration TEST LIN TIME Reads the time remaining of the linearity self test LINEARITY TEST Calibration TEST LIN TOL lt n gt Reads a linearity calibration error tolerance LINEARITY TEST Calibration TEST SYST ABOR Cancel a system self test SYSTEM TEST Calibration TEST SYST INIT Initiate a system self test SYSTEM TEST Calibration TEST SYST REP lt n gt Reads the report from a system self test SYSTEM TEST Calibration TEST SYST STAT Read the completion state of the system self test SYSTEM TEST Calibration UNIT TEMP Set the temperature Unit Unit Temperature Unit Descriptions of Commands The function of each command as well as an example of each is listed below CLS Clears all status registers and the error queue Specifically this command clears the Standard Event Status Register see Section 8 7 3 3 ESR on page 74 Operation Status Event Register see Section 8 7 3 89 STAT OPER on page 94 Questionable Status Event Register see Section 8 7 3 92 STAT QUES on page 94 and system error queue see Section 8 7 3 116 SYST ERR on page 98 The Status Byte Reg ister see Section 8 7 3 7 STB on page 76 is updated to show the new state of the registers ESE lt value gt Example command ESE 16 Query form ESE S
97. Run System Test to ensure the hardware is working properly If System Test does not pass contact the nearest Fluke Authorized Service Center Multiple channels are enabled but only To measure multiple channels the unit must have the scan function enabled one channel measures Turn on Scan Enable in the Scan Settings screen of the Measure menu Excessive measurement noise The current may be too low Check the current setting by pressing the SETUP key and viewing the excitation current setting for each channel The reference resistor selection may be incorrect Check the assigned reference resistor for each channel by pressing the SETUP key and viewing the Rs selection A faulty measurement connection can be a source of noise Check the connection by gently tugging the connector on each wire and inspecting for possible wire breaks The digital filter may not be configured correctly The Timing Settings may be too fast Try setting the Sample Period to a longer setting This may also help when scanning multiple channels Make sure there are no strong sources of electromagnetic interference near the Super Thermometer or devices connected to it Use measurement cabling that is shielded Attach the shield wire of the cable to the Ground DWF connector Try attaching a ground wire between the Ground DWF connector on the Super Thermometer and the chassis of the temperature source Room temperature variations or air drafts near the Super Thermometer may caus
98. STICS SETTINGS F3 on page 49 This setting is only meaningful when Delta Mode is set to OFFSET The RST command sets Delta Offset to the default value which is 0 CALC lt n gt TYPE TEMP RES RAT Query form CALC lt n gt TYPE Alternate parameter DEF Sets the channel s Calculation setting Suffix lt n gt specifies the channel number through 4 for the corresponding front channel input 5 through 14 for channels of the first attached scanner and 15 through 24 for channels of the second attached scanner The default setting may depend on the probe and reference resistor settings DATA REC ALL lt boolean gt Query form DATA REC ALL Alternate parameter DEF Sets the data recording Record Statistics setting see Section 5 7 3 4 1 RECORDING SETTINGS F1 on page 42 The default is ON 8 7 3 29 8 7 3 30 8 7 3 31 8 7 3 32 8 7 3 33 8 7 3 34 8 7 3 35 8 7 3 36 Remote Operation Interface Commands DATA REC FILE lt name gt Query form DATA REC FILE Sets the data recording USB File name see Section 5 7 3 4 1 RECORDING SETTINGS F1 on page 42 DATA REC MEM INT USB BOTH Query form DATA REC MEM Sets the data recording Memory Device see Section 5 7 3 4 1 RECORDING SETTINGS F1 on page 42 DATA REC STAT lt boolean gt Query form DATA REC Starts or stops recording This is equivalent to pressing the START RECORDING or STOP RECORDING function key in the Main Screen A lt boolean gt pa
99. Section 5 7 4 5 TEMPERA TURE UNIT F5 on page 50 If no result is available no response is returned and error 230 Data corrupt or stale is generated in the error queue CALC lt n gt AVER SDEV Example command CALC3 AVER SDEV Example response 0 000144 Reads a channel s statistical sample standard deviation see Section 5 7 4 2 FIELD SETTINGS F2 on page 48 Suffix lt n gt is the channel number 1 through 4 for the corresponding front channel input 5 through 14 for channels of the first attached scanner and 15 through 24 for channels of the second attached scanner The returned value has the same units as the measurement returned by the FETC command If the calculation is temperature the unit of measurement is determined by the Unit setting see Section 5 7 4 5 TEMPERA TURE UNIT F5 on page 50 The standard deviation is available 1f at least four measurements have been acquired from the channel If no result is available no response is returned and error 230 Data corrupt or stale is generated in the error queue 8 7 3 19 8 7 3 20 8 7 3 21 8 7 3 22 8 7 3 23 Remote Operation Interface Commands CALC lt n gt AVER SEM Example command CALC3 AVER SEM Example response 0 000039 Reads a channel s statistical standard error of the mean see Section 5 7 4 2 FIELD SETTINGS F2 on page 48 Suffix lt n gt is the channel number 1 through 4 for the corresponding front channel inp
100. When changing LAN settings leave the Super Thermometer connected to the network and cycle the power to activate any changes made Hardware Mac Address HARDWARE MAC is the address of the network port It is set at the factory and cannot be changed Selecting Dynamic Host Configuration Protocol DHCP Dynamic Host Configuration Protocol DHCP is a client server protocol that eliminates having to manually set permanent static IP addresses The DHCP server provides configuration parameters dynamic IP address subnet mask and default gateway IP addresses which are required for a client to participate in an IP network Using DHCP is the easiest way to configure the Super Thermometer for remote operation in a network DHCP is enabled by default from the factory When connected to a network and the LAN port is enabled the Super Thermometer will try and retrieve the parameters from a DHCP server that are necessary for communication If the parameters can t be obtained communication will not work Important Before enabling or disabling DHCP ensure the Super Thermometer is connected to the network by plugging the network cable into the LAN port on the Super Thermometer Always cycle the power after making changes to DHCP To disable or enable DHCP in the NETWORK screen arrow down to DHCP ENABLE and use the Left Right arrow keys to select ON enable or OFF disable Setting a Static Internet Protocol IP Address An internet IP address
101. _2 lt current 2 gt mA MEAN 2 lt mean 2 gt lt unit gt SDEV_2 lt standard deviation 2 gt lt unit gt CURR_3 lt current 3 gt mA MEAN 3 lt mean 3 gt lt unit gt SDEV_3 lt standard deviation 3 gt lt unit gt A Note DRIFT is recorded only if Repeat Nominal is enabled VIEW PREVIOUS F2 displays the most recent set of zero power measurement data results 5 7 4 DISPLAY MENU F4 DISPLAY HENU PRESS A FUNCTION KEY BELOH esa Figure 14 Display Menu Screen The Display Menu is used for configuring the display settings selecting statistics settings and choosing the displayed temperature measurement units 5 7 4 1 Menus and Screens Main Menu USER SETTINGS F1 The User Settings screen allows the user to set preferences such as language temperature measurement resolu tion screen saver settings and alert messages The User Settings screen will automatically appear as the initial screen if the Start up Help setting is enabled see below This assists a first time user in setting preferences and setting the clock to the local time The User Settings screen can also be conveniently reached directly from the Measurement Screen at any time by press ing and releasing the ENTER key and then pressing the SETUP key When reached this way it will appear in English regardless of the language setting The following configuration fields are displayed in the User Settings screen LANGUAGE sets the language i
102. ace password and calibration The System Menu screen displays the following product information Manufacturer Model Serial Number Firmware Version and Calibration Date The following are the System Menu function keys TIME DATE F1 The Time and Date function key allows the user to enter the system Time and Date using the following fields TIME time of the system clock It is always in 24 hour format DATE date of the system clock It appears in the format determined by the Date Format setting see Section 5 7 4 1 USER SETTINGS F1 on page 47 5 7 5 2 5 7 5 2 1 9 7 9 2 2 9 7 9 2 3 Menus and Screens Main Menu DAYLIGHT SAVING determines whether the clock is automatically adjusted at the beginning and end of the Daylight Saving period Options are OFF NORTH AMERICA and EUROPE The default option is OFF REMOTE INTERFACE F2 The Remote Interface screen contains the function keys used for configuring and monitoring the remote inter face ports For more information on the Remote Interface ports and a list of remote operation commands see Section 8 Remote Operation on page 65 The following are the function keys located in the Remote Interface menu SERIAL F1 The Serial function key is used to configure the RS 232 serial port with the following configuration fields BAUD RATE baud rate setting of the serial port It may be set to 1200 2400 4800 9600 19200 or 38400 The default setting is 9600
103. acy 6 10 RATIO CALIBRATION F3 55 104 Ratio Self Calibration 55 100 101 104 108 READ FILE F1 32 37 READ FILE F3 43 READ PROBE F4 37 READ RESISTOR F3 32 READY 27 Rear Panel 17 20 rear USB 68 RECALL CONFIG F2 53 recording 81 Recording 27 Recording Menu 41 RECORDING MENU F4 41 RECORDING SETTINGS F1 42 Record Statistics 80 RECORD STATISTICS 42 REFERENCE CHANNEL 39 118 reference resistor 30 62 Reference Resistor Drift 12 REFERENCE RESISTOR Rs 30 RELATIVE ERROR 107 Relative Measurement Current Accuracy 8 Remote Interface 51 REMOTE INTERFACE F2 51 Remote Operation Connections 21 Repeat Count 91 REPEAT COUNT 39 REPEAT NOMINAL 44 63 Report Operation Commands 70 RESET STATISTICS F3 28 Resistance 89 RESISTANCE 30 48 Resistance Accuracy 7 11 13 resistance calibration 106 RESISTANCE CALIBRATION F4 55 106 Resistance Ratio Temperature 30 RESISTANCE VALUE 31 RESISTOR 34 107 resistor definition 31 resistor definition library 31 Resistor Definitions 55 RESISTOR ID 31 Resistor Library 55 RESISTOR PROTECTION 55 Resistor Stability 6 RESTORE DEFAULT F4 54 Rs 9 27 30 RS 26 Rs1 20 62 90 Rs2 20 62 90 RS 232 21 65 69 Rs DUE ALERT 47 57 Rs inputs 17 R T 87 RT90 9 R T POLYNOMIAL 36 RTPW 9 86 Russian 15 19 47 82 Rx 9 S Safety Information 1 Sample Count 49 SAMPLE COUNT 49 Sample Period 39 40 92 SAMPLE PERIOD 40 sample size 79 Sampling 39 S
104. ads and clears the Operation Status Event Register This indicates whether a new measurement became available to read using FETC since the previous STAT OPER query The return value is 16 if a new mea surement has been acquired and 0 otherwise Reading the Operation Status Event Register using this command clears the register The register is also cleared when a CLS or FETC command is received STAT OPER COND Example response 16 Reads the Operation Status Condition Register This indicates whether or not measurement is enabled The return value is 16 if measurement is enabledand 0 otherwise Reading the Operation Status Condition Register does not change it STAT OPER ENAB lt value gt Example command STAT OPER ENAB 16 Query form STAT OPER ENAB Alternate parameter DEF Sets the Operation Status Enable Register This mask register determines which corresponding bits of the Op eration Status Event Register affect the Operation Status Bit OSB bit 7 of the Status Byte Register A value of 16 enables reporting when a new measurement is acquired The default setting is 0 STAT QUES Example response 16 Reads and clears the Questionable Status Event Register This indicates whether a new measurement that was erroneous or questionable was acquired since the previous STAT QUES query The bits in the Questionable Status Event Register correspond to the bits in the Questionable Status Condition Register and are caused by the s
105. ailable error 230 Data corrupt or stale is generated in the error queue TEST LIN INIT Query form TEST LIN INIT Starts Ratio Self Calibration see Section 9 Calibration on page 103 If Ratio Self Calibration is already in progress error 213 Init ignored is generated in the error queue While Ratio Self Calibration is in progress the display shows the Ratio Calibration status screen 8 7 3 134 8 7 3 135 8 7 3 136 8 7 3 137 Remote Operation Interface Commands The query form returns if Ratio Self Calibration is in progress 0 otherwise TEST LIN REP lt n gt Example response 0 00000002 0 00000001 0 00000002 0 02 0 003 Reads a report from Ratio Self Calibration see Section 9 Calibration on page 103 Suffix lt n gt specifies the test number of which a report is requested lt n gt Linearity self test type zero check compliment check equal ratio sum 100 scale equal ratio sum 90 scale equal ratio sum 75 scale equal ratio sum 60 scale equal ratio sum 50 scale ON oO a oO rm unequal ratio sum The normal response contains the following lt result A gt lt result B gt lt combined gt lt error gt lt std error gt lt result A gt is the mean measurement from the first part of the test lt result B gt is the mean measurement from the second part of the test lt combined gt is the combined result of the two parts
106. ame conditions see Section 8 7 3 93 STAT QUES COND on page 94 The difference is the bits in the Questionable Status Event Register remain set after the condition no longer ex ists Reading the Questionable Status Event Register using the STAT QUES command clears the register The register is also cleared when a CLS command is received STAT QUES COND Example response 16 Reads the Questionable Status Condition Register This indicates whether the latest measurement was errone ous or questionable The return value is 16 if the latest measurement is questionable and 0 otherwise The Questionable Status Condition Register is cleared when a new valid measurement is acquired Reading the Questionable Status Condition Register does not change it STAT QUES ENAB lt value gt Example command STAT QUES ENAB 16 Query form STAT QUES ENAB Alternate parameter DEF Sets the Questionable Status Enable Register This mask register determines which corresponding bits of the Questionable Status Event Register affect the Questionable Status Bit QSB bit 3 of the Status Byte Register A value of 16 enables reporting of questionable measurements The default setting is 0 8 7 3 95 8 7 3 96 8 7 3 97 8 7 3 98 8 7 3 99 8 7 3 100 8 7 3 101 8 7 3 102 8 7 3 103 8 7 3 104 Remote Operation Interface Commands SYST BEEP IMM Example command SYST BEEP Produces an immediate beep from the speaker SYST BEEP KEY lt boole
107. an gt Query form SYST KEY BEEP Alternate parameter DEF Sets the Key Beep setting see Section 5 7 4 1 USER SETTINGS F1 on page 47 The default setting is ON SYST BEEP ALER lt boolean gt Query form SYST KEY ALER Alternate parameter DEF Sets the Alert Beep setting see Section 5 7 4 1 USER SETTINGS F1 on page 47 The default setting is ON SYST CODE VERS Example response 1 23 1 00 1 10 Reads the firmware code version numbers The response contains the following lt UI version gt lt kernel version gt lt analog version gt SYST COMM GPIB ADDR lt value gt Query form SYST COMM GPIB ADDR Alternate parameter DEF MIN MAX Sets the IEEE 488 port s Address setting see Section 8 6 Configuring the IEEE 488 Port on page 69 SYST COMM GPIB STAT lt boolean gt Query form SYST COMM GPIB Sets the IEEE 488 port s Port Enable setting see Section 8 6 Configuring the IEEE 488 Port on page 69 SYST COMM GPIB TERM LIN RET Query form SYST COMM GPIB TERM Sets the IEEE 488 port s Termination setting see Section 8 6 Configuring the IEEE 488 Port on page 69 SYST COMM SER BAUD lt value gt Query form SYST COMM SER BAUD Sets the serial port Baud Rate setting see Section 8 5 Configuring the RS 232 Serial Port on page 69 SYST COMM SER LIN lt boolean gt Query form SYST COMM SER LIN Alternate parameter DEF Sets the serial port s Linefeed setting see Section 8 5 Configuring the RS
108. annel can also be enabled by pressing the corre sponding Channel Select Key on the front panel The following function keys are used to configure the channels ASSIGN PROBE F1 The Assign Probe function key allows the user to assign a predefined probe definition to the selected channel Upon pressing the Assign Probe function key the Probe Library is displayed Using the Up Down arrow keys the desired probe definition is highlighted Pressing ENTER assigns the probe definition to the previously selected channel For convenience the function keys needed for editing the Probe Library are included in the Assign Probe screen These function keys are described in detail in the Probe Menu section 29 1594A 1595A Super Thermometer Main Menu 30 5 7 1 2 CHANNEL SETTINGS F2 Y S With the desired channel selected in the Channel Setup screen pressing the Channel Settings function key opens a screen that allows the user to configure the channel settings The channel that is being configured is identified at the top of the Channel Settings screen The channel configuration fields are as follows REFERENCE RESISTOR Rs identifies the reference resistor to be used for measurement The options are any of the four internal resistors 10 100 250 1000 10 KQ and any user configured external resistor See Table 13 for the recommended reference resistor Table 13 Recommended Reference Resistor for Various Probe Types
109. annel input to which the standard resistor is connected STANDARD RESISTANCE is the calibrated resistance value of the standard resistor The START F1 function key begins the resistance calibration As the test proceeds the screen indicates the status of the process The user may press the CANCEL F5 function key or EXIT key to cancel the test The resistance calibration uses the sensing current for which the resistor s Absolute Resistance Uncertainty is specified During the resistance calibration the digital filter is disabled and the timing is set to the Precision settings so that results will be consistent and accurate Normal temperature measurement and data recording is suspended Settings are automatically restored after the test The reported measurement is the mean of a series of samples of the resistance acquired over a period of about min When the measurement is completed the screen shows the results which includes the following MEASUREMENT is the measured resistance of the standard resistor This may be compared to the calibrat ed resistance of the standard resistor to provide an indication of the accuracy of the internal reference resistor ABSOLUTE ERROR is the difference between the measurement and the Standard Resistance value pre sented in ohms RELATIVE ERROR is the difference between the measurement and the Standard Resistance value divided by the Standard Resistance and multiplied by a factor of one milli
110. arameter lt polarity gt sets the direction of the current and may be either 0 for forward or for reverse TEST CURR STAT lt boolean gt Query form TEST CURR Sets the state of the sensing current test see Section 9 Calibration on page 103 Parameter lt boolean gt given a value of starts the sensing current test if it is off A value of 0 stops the sensing current test if it is on During the sensing current test a constant current is sourced at the current terminals of a channel The channel current magnitude and polarity may be specified using the TEST CURR CONF command While a sensing current test is in progress the display shows the Current Test status screen Also the 0 bit of the Operation Status Condition Register is set while the test is in progress and is cleared when the test is stopped A sensing current test is stopped if the RST command is received TEST LIN ABOR Cancels Ratio Self Calibration see Section 9 Calibration on page 103 Ratio Self Calibration is also canceled if the RST command is received TEST LIN PAR Example response 0 12 0 05 0 03 0 02 Reads the suggested calibration Linearity C lt n gt parameters see Section 9 Calibration on page 103 result ing from the Ratio Self Calibration The response contains the following lt C1 gt lt C2 gt lt C3 gt lt Zero gt A response is returned only if the Ratio Self Calibration runs to completion If no linearity self test report is av
111. bility Specifications Resistor Rs Accuracy ppm of reading 95 confidence level Absolute Resistance Accuracy Introduction and Specifications Specifications Absolute resistance accuracy is the ability of the instrument to measure absolute resistance Rx using the internal reference resistors The following specifications apply using the given reference resistor Rs and excitation current The 1 year specifications include calibration uncertainty reference resistor drift ambient temperature sensitiv ity resistance ratio uncertainty and measurement noise using 1 minute average and a 2 second sample period n 30 Performance verification is guaranteed for 99 confidence level 1 year specifications within the specified operating temperature range of 15 C to 30 C maintaining a calibration interval of 6 months for the first year and year thereafter Table 4 Absolute Resistance Accuracy Specifications Resistance range Rs current Accuracy ppm of reading 95 confidence level 1 year 0 Q to 1 2 Q 1 Q 10 mA 0 Q to 12 Q 10 Q 3 mA 0 Q to 120 Q 25 Q 1 mA 0 Q to 400 Q 100 Q 1 mA 0 Q to 10 KQ 10 KQ 10 uA 10 KQ to 40 KQ 10 KQ 10 pA 40 KQ to 100 KQ 10 KQ 2 uA 100 KQ to 500 KQ 10 KQ 1 pA Greater of 40 ppm or 0 000012 Q Greater of 10 ppm or 0 000024 Q Greater of 5 ppm or 0 000024 Q Greater of 4 ppm or 0 00008 Q Greater of 5 ppm or 0 000012 kQ 8 ppm 20 ppm 80 pp
112. ble Event status Master summary status NIOJ AJOJN o Operation status CAL DATE lt year gt lt month gt lt day gt Example command CAL DATE 2009 8 21 Query form CAL DATE Password protection unconditional Sets the instrument s date of calibration CAL PAR LIN lt n gt lt value gt Query form CAL PAR LIN1 Password protection unconditional Sets a calibration Linearity C lt n gt parameter These settings may be used to apply a linearity correction to the measurement circuit IMPORTANT Calibration parameters should not be changed except as part of the Super Thermometer calibration procedure performed by a qualified service technician CAL PAR RES lt n gt lt value gt Query form CAL PAR RES lt n gt Password protection unconditional Sets the calibrated resistance of an internal reference resistor Suffix lt n gt specifies the resistor 1 1 Q 2 10 Q 3 25 Q 4 100 Q 5 10 kQ IMPORTANT Calibration parameters should not be changed except as part of the Super Thermometer cali bration procedure performed by a qualified service technician CAL PAR ZERO lt value gt Query form CAL PAR ZERO Password protection unconditional 8 7 3 12 8 7 3 13 8 7 3 14 8 7 3 15 Remote Operation Interface Commands Sets the calibration Zero Correction parameter This setting may be used to apply a zero correction to the measurement circuit IMPORTANT Calibration parame
113. brate each of the internal reference resis tors It requires a calibrated standard resistor of approximately the same resistance as the internal resistor that will be calibrated No password is required to run Resistance Calibration since it first measures an internal resistor without mak ing any adjustment to its internal calibration parameter After an internal resistor is measured the results are displayed allowing the user to observe the results and decide if an adjustment is necessary Resistance Calibration works by measuring an internal resistor against a calibrated standard resistor The inter nal resistor s calibration parameter is adjusted to correct for error 9 5 1 Calibration RESISTANCE CALIBRATION F4 To properly calibrate a Super Thermometer internal resistor the expanded uncertainty k 2 of the standard resistor should be no greater than 25 of the 95 confidence level 1 Year Absolute Resistance Accuracy specifications Its resistance should be approximately the same as that of the internal reference resistor being calibrated which will result in the least measurement noise and best test uncertainty The standard resistor may be connected to any one of the four front panel measurement channels To set up the resistance calibration the user must configure the following fields displayed in the Resistance Calibration screen RESISTOR specifies the internal reference resistor to be measured CHANNEL is the front ch
114. ce gt Query form INP lt n gt RS ROUT Sets a channel s Reference Resistor Rs setting see Section 5 7 1 2 CHANNEL SETTINGS F2 on page 30 Suffix lt n gt specifies the channel number through 4 for the corresponding front channel input 5 through 14 for channels of the first attached scanner and 15 through 24 for channels of the second attached scanner 89 1594A 1595A Super Thermometer Interface Commands 90 8 7 3 71 8 7 3 72 8 7 3 73 Parameter lt source gt may be any of the following lt source gt Function 1 Selects the internal 1 Q resistor for the reference resistor 10 Selects the internal 10 Q resistor for the reference resistor 25 Selects the internal 25 Q resistor for the reference resistor 100 Selects the internal 100 Q resistor for the reference resistor 10K Selects the internal 10 KQ resistor for the reference resistor RS1 Selects the rear RS1 input as the source for the reference resistor RS2 Selects the rear RS2 input as the source for the reference resistor CH2 Selects the front Channel 2 input as the source for the reference resistor CH4 Selects the front Channel 4 input as the source for the reference resistor An input option is not allowed if the resistor assignment for the input is NONE see Section 8 7 3 61 INP REAR lt n gt RS IDEN lt id gt VAR NONE on page 87 and Section 8 7 3 66 INP lt n gt RS IDEN lt id gt VAR NONE on page 88 in which case
115. cpscnsinetes nido ias 100 WESTELIING INU e eee led TEST LIN REP lt n gt 7 7 TESTIN RER MME riales vii 1594A 1595A Super Thermometer viii 57 3436 TESTLINESTA Peal ontenandee 101 8 7 3 1387 TEST LIN TIME es 101 gro let TEN B E O 1 y Er OPE OOPS UE II 102 8 7 3 189 TEST SYST ABOR cccccccsescssssecevsesecsvsevevsvescevsusevsusecevsusevsusevsvsutevssevensevevsnsevstsevevsusevevseenstees 102 8 7 3 140 TESTSYST INIT ea 102 8 7 3 141 TEST SYST REP lt 1 gt es 102 ATA TEST SYS S AP iaa 102 ETa mI UNTITEMP OKP cennsa aE a AE 102 9 Calibration ainia ai 103 DU MTOUC ON arta acts 103 9 2 SYSTEMTEST scr ia adas 103 93 CURRENT TEST F2 ai aid 103 94 RATIO CALIBRATION ES esconden ETEA N EAA 104 sia WRITE FILE Fijerena E ERS 106 942 ADJUST PARAMETERS E iaieiiea ias 106 9 5 RESISTANCE CALIBRATION F4 ooccococooncccnnononococononononononnnnnnnonnnononononnnoncnccinnnnss 106 9 5 1 WRITE FILE F1 cecceccccsccscsscsscssessesvesessessessesessessessessenssesesesevsevsiessevetevseviseantestevsesesesees 107 9 52 ADJUST RESISTOR F2 oraren a caeeabnde dapadadusnaeh A A SONER 108 9 6 CALIBRATION PARAMETERS ED wccccssscesscecectcczssecssseastesesieesschesieeeysbereasestissecieasse 108 96 1 Calibration Inte VE ssisesicxisw sladses ce tnaced sracesstancaniaiswre unit lute a a a sated dale e a aaa 108 9 6 2 Standby Current OE IRA eins 109 10 Maintenance oocconccnccnnoconccnncnnnconanancnnnrnnnnnnnrnn ron nnnnrnnronannnannarnnara
116. croll through the list using the Up Down arrow keys and select the file to be loaded Press OK F5 to begin the file transfer A message will prompt the user to continue Tip Resistor definition files must be located in a folder named 159x resistor on the USB memory device The files must have the extension res and contain resistor definition data in the proper format This type of file can be created by using the Write File function see Section 5 7 1 2 1 3 2 WRITE FILE F2 on page 32 in the Manage Resistors menu MANAGE RESISTORS F3 Rs resistor definitions in the resistor definition library may be added deleted or prioritized in the Manage Resistors menu using the following function keys READ FILE F1 The Read File function key allows the user to import an entire set of resistor definitions from a file on a USB memory device Every resistor definition in the resistor definition library must have a unique ID If a resistor definition in the library has the same ID as one read from the USB memory device it will be replaced Tip Resistor definition files must be located in a folder named 159x resistor on the USB memory device The files must have the extension res and contain resistor definition data in the proper format This type of file can be created by using the Write File function see Section 5 7 1 2 1 3 2 WRITE FILE F2 on page 32 in the Manage Resistors menu WRITE FILE F2 The Write Fi
117. cted The user will be prompted to enter the correct password to continue The Adjust Resistor screen shows the resistor that will be adjusted the prior value of its calibration parameter and the new value of the calibration parameter The user presses YES F4 to change the calibration parameter The user may press the NO F5 function key or the EXIT key to cancel the change When the calibration parameter is updated the Calibration Date setting is also updated to the present date see Calibration Parameters in the Menus and Screens section This can be overwritten by manually entering a date and pressing the EXIT key to save the value CALIBRATION PARAMETERS F5 The calibration parameters may be viewed or adjusted by pressing the Calibration Parameters F5 function key If a password is not entered the user will be allowed to only view the parameters Adjustment cannot take place unless a password is entered It is recommended to only adjust the calibration parameters as part of the previously described calibration functions Failure to enter the calibration parameters correctly will cause the Super Thermometer to measure with error If it is required to manually adjust the calibration parameters press the ENTER key to save each change See the Ratio Calibration and Resistance Calibration sections for more information on the resistance calibra tion parameters and linearity calibration parameters The SI UNIT LOCK setting is used to e
118. cuit operates at the reduced scale The reported error is the difference of the sum from 1 0 in units of 1x10 Test 6 Equal ratio sum 60 scale This test evaluates linearity errors at a resistance ratio near 0 5 with the measurement circuit operating at 60 of full scale The test is performed in the same way as Test 3 except the measurement circuit gain is reduced so that the circuit operates at the reduced scale The reported error is the difference of the sum from 1 0 in units of 1x107 Test 7 Equal ratio sum 50 scale This test evaluates linearity errors at a resistance ratio near 0 5 with the measurement circuit operating at 50 of full scale The test is performed in the same way as Test 3 except the measurement circuit gain is reduced so that the circuit operates at the reduced scale The reported error is the difference of the sum from 1 0 in units of 1x10 Test 8 Unequal ratio sum This test evaluates linearity errors at resistance ratios near 0 25 and 0 75 with the measurement circuit operating at full scale The test is performed in the same way as Test 3 except the two resistors are 25 Q and 75 Q The reported error is the difference of the combined result from 1 0 in units of 1x10 All tests use a sensing current of 1 0 mA The timing settings are temporarily set to provide measurements at two second intervals and the digital filter is disabled The reported measurement of each test is the mean of a set of measurem
119. d in a folder named 159x probe on the USB memory device The files must have the extension prb and contain probe definition data in the proper format This type of file can be created by using the Write File function in the Manage Probes menu MANAGE PROBES F5 The Manage Probes screen is used for reading probe definition files from memory writing definition files to memory moving probe definition locations in the Probe Library and deleting probe definitions In the Manage Probe screen the Probe Library is displayed as well as the following function keys READ FILE F1 The Read File function key allows the user to read a probe definition file prb from the USB memory device A probe definition file may contain multiple probe definition files The files have to be located in the folder 159x probe in the memory device and have the extension prb A file is read by inserting a memory device containing a valid probe definition file into the front panel When READ FILE F1 is pressed a list of all probe files that reside on the memory device is shown The file is se lected by using the using the arrow keys The file is transferred to the Probe Library upon pressing the ENTER key and confirming the action Important Any probe definition in the Probe Library that has the same ID as any probe definition in the memory device will be overwritten WRITE FILE F2 The Write File function key exports one probe definition file
120. damental ratio measurements can be averaged see Average Enable below or passed directly to Filtering The number averaged is the number of measurement samples taken during one Display Interval how often the measurement display is updated For example if Sample Period is set to 2 seconds and Display Interval is set to 10 seconds 5 ratio measurement samples are averaged per Display Interval The display is updated with the statistical mean of the 5 measurement samples If AVERAGE ENABLE is OFF only the most recent ratio measurement sample will be passed to Filtering 3 Filtering after Averaging the measurement samples can also be processed with a digital filter configured by using the Digital Filter function key Section 5 7 3 3 DIGITAL FILTER F3 on page 39 1594A 1595A Super Thermometer Main Menu 40 41 if the digital filter is ON If the digital filter is OFF measurement samples are passed directly to Conversion 4 Conversion after filtering the fundamental ratio measurement can be converted to the selected unit of measure such as Temperature Section 5 7 2 3 EDIT PROBE F3 on page 36 If RATIO is the selected unit of conversion the measurement is passed directly to Display 5 Display after conversion the measurement is sent to the display remote interface statistics calculations and memory at a rate of once per Display Interval The statistical mean that is displayed in the Measurement screen is based on n nu
121. date settings See the following configuration field descriptions for more detail PASSWORD a four digit number that must be entered by the user in order to change settings in any pass word protected screen The user may change the password to any four digit number The default is 1234 Important The user must be sure to remember the password or record the password in a safe location If the password is forgotten or lost the instrument must be returned to the factory to have the password reset PROBE PROTECTION enables or disables protection of probe definition related screens This setting is useful for ensuring that probe definitions in the Probe Library do not get inadvertently changed The default is OFF 5 7 7 2 5 7 7 2 1 5 772 2 5 72 3 5 772 4 5 72 5 Menus and Screens Main Menu RESISTOR PROTECTION enables or disables protection of resistor definition related screens This setting is useful for ensuring that resistor definitions in the Resistor Library do not get inadvertently changed The default is OFF MEASURE PROTECTION enables or disables protection of measurement setting screens This setting is used for ensuring that timing and digital filter settings do not get inadvertently changed possibly resulting in noisy or less accurate measurements The default is OFF TIME DATE PROTECTION enables or disables protection of the Time and Date setting screen The de fault is OFF Some screens are always protec
122. doom aoneanmmncentdabieganneeneeene 58 Figure 17 Super Thermometer Web Interface ciiinnininnncinnnicinnccicconcconnorannn nc ccnarrcnannnns 68 Figure 18 Current meter Connection diagram s sssesssseesseiisttristirsterrserrrserrserrsserrsee 103 1594A 1595A Super Thermometer Tables Table SymbolS arrancando tii suede canes lcd 1 Table 2 Resistance Ratio Accuracy Specifications oooonnnninnncnnncconoccccnocnnonncccnan o ncnanccnons 6 Table 3 Resistor Stability Specifications ooo non cccnnocccnnocrnnn coccion rrnnnncncnn rra 7 Table 4 Absolute Resistance Accuracy Specifications ooooonnnininnccioncccocccnccanccononnncnnncccons 7 Table 5 Measurement Current Accuracy Specifications 8 Table 6 Temperature Measurement Noise Specifications 8 Table 7 Relative Measurement Current Specifications oooonnnnnnnncoonccconcccncocccconnnnnnnncnnns 8 Table 8 General Special iaa a dd aii 9 Table 9 Optional Accessories oooonoooocccocooocncccoononononcnonnnnnnnononnonononon non nr nonon nn rn rrcnn nar rrrcnannnns 15 Table 10 Front panel key AescriptiONS ooooocicinococicccononnnoconnnnonoconon ano nc E EEE 18 Table 11 Remote Operation CONNECTIONS ooooococccccconcncnccooonononcnonnnnnnnncon non nrncon non nrnnnannnoos 21 Table 12 Alet Messages oaie nann eerie Aeria nena atdeneshtqinndsbanandsdadhdancaaasesdiedasteteannnerdebass 27 Table 13 Recommended Reference Resistor for Various Probe Types 30 Table 14 Probe Conversion InformatiON
123. e Period Sample Period Timing Settings SENS AVER1 Sets the Average Enable for the sample average Average Enable Timing Settings SENS AVER2 Sets the digital filter s Filter Enable Filter Enable Digital Filter SENS AVER2 COUN Sets the digital filter s Average Count setting Average Count Digital Filter SENS AVER2 CLEA Clears the digital filter buffer CLEAR FILTER f key Digital Filter SENS lt n gt DATA Reads a channel s latest resistance measurement SENS lt n gt RRAT DATA Reads a channel s latest resistance ratio measurement STAT OPER Reads and clears the Operation Status Event Register STAT OPER COND Reads the Operation Status Condition Register STAT OPER ENAB Sets the Operation Status Enable Register STAT PRES Sets the status enable registers to defined states STAT QUES Reads and clears the Questionable Status Event Register STAT QUES COND Reads the Questionable Status Condition Register STAT QUES ENAB Sets the Questionable Status Enable Register SYST BEEP Produces an immediate beep from the speaker SYST BEEP KEY Sets the Keypad Beep setting Keypad Beep Display Settings SYST BEEP ALER Sets the Alert Beep setting Alert Beep Display Settings SYST CODE VERS Read the firmware code version SYST COMM GPIB ADDR Sets the IEEE 488 port s Address setting Address IEEE 488 Port SYST COMM GPIB STAT Sets the IEEE 488 port s Port Enable setting Port Enable IEEE 488
124. e electrical noise Refer to the specifications for environmental requirements The Super Thermometer is designed to be used on a bench top or installed in a standard width rack with the optional rack mount kit For bench top use it is equipped with hinged non slip feet For rack mount instruc tions refer to the rack mount kit instruction manual Front and Rear Panel Features Front Panel Features 4 Front and Rear Panel Features 4 1 Introduction The Super Thermometer has been designed with several features that help make setup and operation as simple as possible while still providing many measurement capabilities This section describes the front and rear panel features as well as the menu system Please read this section before operating the instrument 4 2 Front Panel Features 1594A SUPER THERMOMETER ZT 231 92828 c MEAN 231 928235 C STD DEV 0 000166 C PROBE ID SPRT_5683_104 ION ITS SE OF MEAN 0 000039 C 231 9285 231 9283 231 9281 16 00 Figure 2 Front view 4 2 1 Measurement Inputs Four measurement inputs channels 1 through 4 are located on the front panel Some key points concerning the measurement inputs are e Current C1 C2 Potential P1 P2 and Guard G terminals are labeled to facilitate correct connection Figure 16 on page 58 e Channels 2 and 4 can also be used as reference resistor Rs inputs 4 2 2
125. e measurement instability Locate the instrument in a stable environment 113 1594A 1595A Super Thermometer 114 Problem Solution S Poor accuracy The current may be too low causing poor signal to noise ratio or too high causing excessive self heating Check the current setting by pressing the SETUP key and viewing the excitation current setting for each channel The reference resistor selection may be incorrect Check the assigned reference resistor for each channel by pressing the SETUP key and viewing the Rs selection The Timing Settings may be too fast Try setting the Sample Period to a longer setting This may also help when scanning multiple channels The temperature conversion type or probe characterization coefficients may be in error Check each of the probe parameters carefully Use the Test Calculation function and compare the results with the probe s calibration report table Make sure probe leads are not shorted to other DWF connectors Verify the reference resistor calibration value is entered correctly Make sure the probe wires are properly and tightly connected If using extremely long measurement cables the capacitance in the wires can affect the readings Try setting the measurement timing parameter sample period to the longest setting to allow for the measurement to settle Check the oven stability indicator on the Measurement screen After 30 minutes from power up the indicator should change from SETTLING to
126. e might be slightly higher Sample period is set to 10 seconds Display Interval is set to 10 seconds and Average is set to ON DIGITAL FILTER F3 The Digital Filter screen is used to change the digital filter settings and clear the digital filter buffer Digital Filter Description The digital filter is a moving average filter that computes the arithmetic mean of display measurements stored in a buffer The size of the buffer is user defined via the Average Count setting If the buffer is full the oldest measurement in the buffer is discarded when a new measurement enters the buffer If the buffer is only partly filled the mean is still computed using the limited number of stored measurements If the digital filter is enabled the most recent measurement coming from Averaging see Measurement Se quence Diagram in the previous section is averaged with the previous display measurements stored in the digital filter buffer For example if Display Interval is set to 10 seconds and the digital filter average count is 20 a new display measurement is averaged with the previous 19 display measurements for a window size of 200 seconds n 20 The buffer is cleared when measurement is started or if a measurement is out of range This may occur for example if a probe is disconnected from a channel It may also be cleared by the user at any time using the CLEAR FILTER F1 function This clears the filter for all channels at once The Digital Filt
127. e scan sequence This feature is useful in comparison type calibrations when the heat source is not very stable REFERENCE CHANNEL the setting that determines which channel is the reference channel for Alternate Reference The channel chosen for REFERENCE CHANNEL must be enabled Section 5 7 1 CHANNEL SETUP F1 on page 29 TIMING SETTINGS F2 The Timing Settings screen contains the settings and function keys needed for the configuration of measure ment timing The timing settings control the measurement process and the length of time it takes to produce and display a measurement Measurement Timing Description The measurement timing settings allow the user to be in control of each phase of the measurement process These settings enable the user to optimize timing for different applications To help describe the measurement process 1t is broken into the following five steps Step 1 Step 2 Step 3 Step 4 Step 5 Sampling Averaging Filtering Conversion Display Defined by Enabled with Enabled with Defined by Defined by Sample Period Average Enable Digital Filter Probe Conversion Display Interval Enable Figure 13 Measurement Process Block Diagram 1 Sampling the fundamental measurement of the Super Thermometer is the resistance ratio The fundamental ratio measurement is sampled once per Sample Period 2 Averaging the fun
128. e they are uncorrelated Even though the 1595A resistance ratio accuracy is used twice in the calculation both measurements are con sidered uncorrelated This RSS sum produces a combined standard uncertainty of 0 000115 C Multiplying by the coverage factor k 2 results in a total expanded uncertainty of 0 000230 C In this example it is assumed the SPRT did not drift between the measurements at the TPW and 157 C It may be necessary to add an additional uncertainty that accounts for SPRT drift Measuring With Calibration Report RTPW In this example the SPRT is monitored by periodically measuring its RTPW in a TPW cell but the original RTPW from the SPRT calibration report is entered in the 1595A not the measured RTPW This requires a dif ferent set of specifications to be used in the measurement uncertainty The uncertainty of this measurement is based on four uncorrelated uncertainties These uncertainties are e Resistance accuracy of the 1595A when measuring the SPRT at 157 C e Measurement noise at 157 C e Uncertainty of the SPRT resistance at the triple point of water e Drift of the RTPW of the SPRT Resistance Accuracy at 157 C The resistance of the SPRT at 157 C is 41 1 Q Using the 25 2 internal reference resistor the 1595A one year resistance standard uncertainty is 2 5 ppm This uncertainty in terms of temperature is calculated by first dividing 2 5 ppm by 1 0 x 10 then multiplying by 41 1 Q The resul
129. easured it must be enabled see command Channel Menu The RST command sets Reference Channel to 2 ROUT SCAN REP lt value gt Example command ROUT SCAN REP 10 Query form ROUT SCAN REP Alternate parameter DEF MIN MAX Sets the scan Repeat Count setting see Section 5 7 3 1 SCAN SETTINGS F1 on page 39 91 1594A 1595A Super Thermometer Interface Commands 92 8 7 3 79 8 7 3 80 8 7 3 81 8 7 3 82 8 7 3 83 Parameter lt value gt is the number of measurements performed on a channel before advancing to the next chan nel The range is 1 through 100 and the default is 1 The RST command sets Repeat Count to 1 ROUT SCAN STAT lt boolean gt Query form ROUT SCAN STAT Alternate parameter DEF Sets the Scan Enable setting see Section 5 7 3 1 SCAN SETTINGS F1 on page 39 The RST command sets Scan Enable to the default setting which is ON SENS APER DISP lt time gt Query form SENS APER DISP Alternate parameter DEF MIN MAX Password protection Measure Protection Sets the measurement or Display Interval see Section 5 7 3 2 TIMING SETTINGS F2 on page 39 Parameter lt time gt is in seconds Allowed values for lt time gt are 1 2 10 30 and 60 Values other than these are rounded down to the nearest allowed value The Sample Period setting will be changed if necessary so that it is never greater than the Display Interval setting The RST command sets Display Interval to the
130. easurement Current ACCUTACY ceccecceceeseeeeeeeeeneenseeeteeecerenseesetnrenirenteeetnteneentees 8 224 General SPSCHICAIONS morata naaa aha iea aeiia 9 2 2 5 Applying ihe Specifications sinnini id iiai 9 2 2 5 1 ATKOGWCHOM ys 8s ached bales ed 9 2 2 5 2 How the Super Thermometer Measures cecceeceececeeeeeeeeeeeeecetneeceeeneeeetneesetneentetireeeentens 9 2 2 5 3 Example 1 Measuring an SPA aia 10 2 2 5 4 Example 2 Calibrating an SPRT cceccecceeseeceeceecseereeneeneeseeenesereeereeeesneensesireneeenreneeeneenteents 12 2 2 5 5 EXample 4 Measuring a TOO PRY i e 2 oo E eaa E EA AE a ETAR 13 2 2 5 6 Example 5 Measuring a 10 KO Thermistor oooconcocccnoccccononccnononcnnnnnncnnon cnn nono n nn narran rra 14 Preparation for Operation 15 31 Unpacking and IMSPSCUON ceca cet EERE 15 32 Instruction Mana iuain ao ed 15 3 3 Line Voltage and FUSES ooccocnococccicoononccconnnonoccnonononoconon nono AEE Ra EENET Eas 15 3 4 Connecting to Line POWeTF ooooiococincccnnnocccionccconnnnconancnonnnncnannncnnn nn nn nan r nn nn nn nn nanncnannnnns 16 3 5 Placement and Rack MoOuntiNQ oooociccinnnccnicoooonccccononononononon ono EEA MENERA ARAA EREEREER 16 Front and Rear Panel Features cccccccccceeesesseensseneeeeeeeneeeeeeeeees 17 5 A o A NS 17 4 2 Front Panel Fe aa 17 42 1 Measurement INPS stan oi 17 422 USB COMMECTOMN ac As 17 42 3 Front Panel KEYS dia ies 18 4 2 3 1 Front a DIV A aa 19 43 Rear Panel Feature
131. ecsvsssavevsacsvsnsevsvsesevssevevsnsevensavesseteees 51 5753 CONFIG Fuera dieta 52 576 REGALE COINIG E adn ticas 53 5 7 7 DELETE CONFIG F3 coccnioconinonicnoninnoninnononnonon conan conocio acacia 54 5 7 74 PASSWORD FA creaci n 54 DRLZ ACALIBRATION Fierro abia 55 6 Getting Started ici ai 57 6 1 Powering on the Super Thermometel ociinocinnncccionocicconcccnnonononncnnnao no nnn nn conan ncnnnnncos 57 6 2 User Settings Screen ssssessseessterstttsttttt ttt ttet tnter E EErEE EEEEEEESSEEES SEES P PERSEE EERE ranma 57 6 3 Connecting aProbe or Resistor sseni n a 58 Making Measurements ecc 61 LA Use 0 eo y PEE OOOO nn asd sanianuedboseasgbonbiissaneristoekcedhepepeaadtanbies 61 7 2 Measuring a Temperature Probe 0oocinnnccciniococcccccnonnnonocooonnnnncononn nn nnconon nn rnncccannnncnos 61 7 3 Scanning Multiple Temperature Probes eenen eneen 62 4 Measuting Resistance Ral casi catala essa 62 7 5 Configuring an External Reference ResiStOT oooooonnccccncoococccccooonnnnnnononnnononononnnn conos 62 7 6 Making A Zero Power Measurement ocooccccnioioccccccoonnonocononnnnnccnonn no nononan nn rncccnannnnnnos 63 Remote Operation ci 65 A A PP Rel yeah tute heed eide loys bed EET maga rans 65 8 2 Configuring the Network LAN Port oooonoooonninnococcccooocncnccooonnononononnnononononnnnorononnnnnn os 65 8 2 1 Hardware Mac Address inc sccsccsnensevancsanvsunchguentes adobo dad aaa i ada 66 8 2 2 Selecting Dynamic Host Confi
132. egards the effect of the digital filter since it causes correlation among displayed measurements Otherwise the result of the formula for SE OF MEAN would produce an erroneously low value 5 7 4 3 Y S 5 7 4 4 Menus and Screens Main Menu STATISTICS SETTINGS F3 The Statistics Settings screen allows the user to set statistics related settings such as the statistics mode to be used STATISTICS MODE determines the mode in which statistics are used The options are LIMITED and UNLIMITED In Limited mode statistics are calculated using a sliding window that is limited in width by the number of samples defined in the Sample Count setting The oldest measurement leaves the sliding window buffer when a new measurement enters Unlimited mode allows the number of samples to grow indefinitely until the user resets the statistics or stops measurement SAMPLE COUNT defines the number of samples on which the statistics are based In LIMITED mode this setting defines the width of the sliding window A maximum of 100 can be selected DELTA MODE determines whether the Delta statistics field is based on a measurement from a channel or an offset entered by the user The options are CHANNEL or OFFSET DELTA OFFSET sets the offset value used for calculating Delta This setting applies when Delta Mode is set to OFFSET When the Delta Offset value is subtracted from a measurement it assumes the same units as the measurement The sett
133. emory device is inserted into the front USB port the user presses the CONTINUE function key to proceed to write the file The file is stored in a folder named 159x test If the file already exists the new test results are added to the file 107 1594A 1595A Super Thermometer CALIBRATION PARAMETERS F5 108 9 5 2 9 6 9 6 1 The results of the resistance calibration are written to the file as follows RESISTANCE lt Rs gt lt chan gt lt standard gt lt measurement gt lt error gt lt SE gt lt date and time gt lt Rs gt is the nominal resistance of the internal reference resistor in 2 lt chan gt is the channel number to which the standard resistor was connected lt standard gt is the calibrated resistance of the standard resistor lt measurement gt is the measured resistance of the standard resistor lt error gt is the error of the measurement compared to the calibrated resistance of the standard resistor in units of ohms lt SE gt is the standard error of the reported error in units of ohms lt date and time gt is the date and time of the test The date is in the format Y Y Y Y MM DD The time is in 24 hour format ADJUST RESISTOR F2 The Adjust Resistor function allows the user to apply an adjustment to an internal reference resistor s calibra tion parameter to improve its accuracy based on the results of the resistance calibration The Adjust Resistor function is always password prote
134. ent used in the second step of the sequence MEAN 2 the mean of the measurements in the second step STD DEV 2 the standard deviation of the measurements in the second step the following apply if Repeat Nominal is enabled SENSING CURRENT 3 the measurement current used in the third step of the sequence MEAN 3 the mean of the measurements in the third step STD DEV 3 the standard deviation of the measurements in the third step The measurement results can be written to memory by pressing the WRITE FILE F1 function key The user may change the file name by pressing the ENTER key and using the alpha numeric interface Once the file name is set and after the USB memory device is inserted into the front USB port the user presses the CON TINUE F1 function key to proceed to write the file The file is stored in a folder named 159x zero If the file already exists the new test results are added to the file The results of the zero power measurement are written to the file as follows DATE lt date gt TIME lt time gt CHAN lt channel number gt 45 1594A 1595A Super Thermometer Main Menu 46 PROBE lt probe ID gt ZERO MEAS lt corrected measurement gt lt unit gt SELF HEAT lt self heating gt lt unit gt STAN ERR lt standard error gt lt unit gt DRIFT lt drift gt lt unit gt CURR_1 lt current 1 gt mA MEAN 1 lt mean 1 gt lt unit gt SDEV_1 lt standard deviation 1 gt lt unit gt CURR
135. ents of the resistance ratio under certain conditions For each test a standard error of the mean is calculated and reported This provides an estimate of the uncer tainty of the mean of the reported error due to measurement noise The standard error of the mean is calculated from the standard deviation S S of parts A and B and the sample count 7 using the following equation 2 2 seat afoul 10 a n The sample count is the number of samples comprising the result from each part of the test The divisor a is 2 for Test 1 and Test 2 accounting for the fact that the reported error is calculated as an average from the two test parts For the other tests a 1 When the Ratio Self Calibration completes the time and date when the last test ended are shown below the test results To view the test report screen the user presses the VIEW REPORT F1 function key The report screen shows the specified tolerance test result error condition the percent error relative to the tolerance and the standard error of the test result error for each individual test The tolerances shown are based on the 99 confidence level resistance ratio specifications found in the Specifications section The Ratio Self Calibration report data are stored in internal non volatile memory overwriting the results of any previous Ratio Calibration The report of the most recent Ratio Self Calibration may be viewed at any time using the VIEW PREVIOUS F2 function key
136. er Thermometer remotely through the available re mote operation ports See Table 18 for a list of the available remote operation ports The remote operation commands listed at the end of this section are applicable with all of the remote operation ports Table 18 Remote Operation Ports Connection Description LAN Ethernet connector that allows connection to a network for controlling the instrument and transmitting measurements o USB port that allows the instrument to be controlled as a USB peripheral from a computer COMPUTER RS 232 9 pin subminiature D type serial port that can be used to control the instrument via RS 232 _ IEEE 488 IEEE 488 Input Output that is compatible with IEEE 488 interface and the IEC 625 Bus for controlling the instrument Configuring the Network LAN Port The LAN Local Area Network port allows the Super Thermometer to be controlled remotely through a traditional Ethernet IP network With this port the user may control the Super Thermometer remotely using the commands listed at the end of this section In addition once the port is configured properly the Super Thermometer can be accessed with the Super Thermometer Interface web application on a PC The LAN port implements a 10 100 Base T Ethernet network interface It supports the protocols TCP IP DHCP and HTML The port is disabled by default and must be enabled to be used The user may select DHCP or speci
137. er Thermometer while measurement and recording are in progress or recorded data may be lost Measurements are recorded when the START RECORD F5 function key in the Measurement screen has been pressed The Status Bar at the bottom of the Measurement screen indicates if recording is ON or OFF Each recorded measurement includes the date and time of the measurement channel measured value and unit Additional statistical data is also recorded when the Record Statistics setting is ON The data written into internal memory is organized into data sets and each data set is identified by the date and time of the first measurement in the set A new data set is started each time the START RECORDING F5 function key is selected if measurement is on Likewise a new data set is started each time the START MEA SUREMENT F1 function key is selected if recording is on Data is recorded to the USB file in ASCII text comma separated values CSV format one measurement per line Each line is terminated with a carriage return and linefeed The format of a line of data when the Record Statistics setting is OFF is as follows lt measurement value gt lt unit gt lt channel number gt lt date and time gt Example 231 927562 C 4 2010 01 10 14 23 10 When RECORD STATISTICS is ON the format is as follows lt measurement value gt lt unit gt lt channel number gt lt date and time gt lt ratio gt lt resistance gt lt mean gt lt std dev gt Example
138. er configuration settings and function key are as follows FILTER ENABLE enables or disables the digital filter The default option is ON AVERAGE COUNT sets the number of Display Interval measurements that are averaged by the digital filter The setting has a range of 2 through 100 The default value is 30 This setting is only meaningful when Filter Enable is ON CLEAR FILTER F1 clears the filter buffer Tip It is useful to use Clear Filter to clear the digital filter buffer when an abrupt change to the data has occurred This allows the filtered measurements to settle more quickly RECORDING MENU F4 In the Recording Menu the user can control how measurements are recorded to a memory device external or internal This menu is also used for manipulating data files including exporting of data and erasing data Measurements may be stored in either of two possible memory devices Internal Memory or a external USB Memory Device Internal memory can store up to approximately 80 000 individual measurements A USB flash memory device can typically store an even greater quantity of data depending on the memory size Both types of memory devices are non volatile meaning the data is preserved even when the power is switched off However some data may be lost if the power is switched off as data is being written 41 1594A 1595A Super Thermometer Main Menu 42 5 7 3 4 1 9 7 3 4 2 Important Avoid switching power off to the Sup
139. er understand how to navigate the menu system e The Main Menu of the menu system may be accessed from the Measurement Screen and most other screens by pressing the MENU key e Function Keys F1 F2 F3 F4 F5 are used to select menus functions and in some cases to toggle settings e The EXIT key is used to exit a screen or menu and return to the parent screen In most screens pressing and holding the EXIT key for a moment returns directly to the Measurement Screen e Menus and screens contain help text that clarify the purpose of the menu or screen e When any setting is changed in a screen the ENTER key must be pressed to save the change e When a field requires alpha numeric character input the Alpha Numeric Interface opens automatically upon pressing ENTER when the field is highlighted e Some screens may be password protected If the password is required a special password screen will appear More information concerning password protection is found in the System Menu section e The SETUP key provides a shortcut to the Channel Setup screen Section 5 7 1 CHANNEL SETUP F1 on page 29 e Pressing ENTER then SETUP provides a shortcut to the User Settings screen Section 5 7 4 1 USER SETTINGS F1 on page 47 where the language setting and other user settings are located e The User Settings screen will appear as the initial screen if the Start Up Help setting is enabled see Section 5 7 4 1 USER SETTINGS F1 on page 47
140. esponse could not be returned because valid data is not available 330 Self test failed A self test failed because of a hardware error 350 Queue overflow An error occurred when the error queue was full 360 Communication error A communication error occurred such as a framing error or input buffer overrun 400 Query error A response to a query was not transmitted prior to another command being received 8 7 3 117 SYST KLOC lt boolean gt Query form SYST KLOC Alternate parameter DEF Sets the front panel key lock If the parameter is 1 front panel keys are inoperable The key lock remains on until the command is sent with the parameter 0 The key lock setting is initially off at power on The RST command sets key lock off 8 7 3 118 SYST PASS CDIS Disables access to password protected settings The SYST PASS CEN command may be used subsequently to enable access 8 7 3 119 SYST PASS CEN lt password gt Example command SYST PASS CEN 1234 Enables access to password protected settings If lt password gt is incorrect error 221 Settings conflict is generated in the error queue Password access remains enabled until the SYST PASS CDIS command is re ceived Password access is disabled at power on 98 8 7 3 120 8 7 3 121 8 7 3 122 8 7 3 123 8 7 3 124 8 7 3 125 8 7 3 126 8 7 3 127 8 7 3 128 Remote Operation Interface Commands SYST PASS CEN STAT Returns the pas
141. ets the Standard Event Status Enable Register This mask register determines which corresponding bits of the Standard Event Status Register see Section 8 7 3 3 ESR on page 74 affect the ESB summary message bit 5 of the Status Byte Register ESR Example response 160 Reads and clears the Standard Event Status Register This indicates any of several events defined by the IEEE 488 2 standard and which are listed in the following table Reading the Standard Event Status Register clears it The register is also cleared by the CLS command 8 7 3 4 8 73 5 8 7 3 6 ud Event OPC Operation Complete Request control not used Query error Device dependent error Execution error Command error User request not used NX O OD A2 O ND 0 Power on IDN Example response FLUKE 1594 A9C111 1 10 1 00 Reads the instrument information The response is given in the following format lt manufacturer gt lt model number gt lt serial number gt lt version numbers gt RST Sets operating settings to default states The following settings are affected Any self test in progress is canceled Measurement enable is set to OFF Channel 2 enable is set to ON all other channels OFF Scan Enable is set to ON Repeat Count is set to 1 Alternate Reference is set to OFF Reference Channel is set to channel 2 Timing settings are preset to NORMAL presets Stop Timer Enable
142. ets the reference resistor assigned to a front reference resistor input Reads the ID of the next resistor in the Resistor Library Reads the oven stable condition ASSIGN RESISTOR Set Up Rs INP RS PAR Sets the value of a setting in a resistor definition EDIT RESISTOR Define Resistor INP lt n gt RS ROUT Sets a channel s Reference Resistor Rs setting ROUT CLOS Selects one channel for measurement ROUT CLOS STAT Returns the channel number of whatever channel is actively being measured Active Channel Main Screen ROUT SCAN Enables channels for scanning ROUT SCAN ADD Adds channels to the scan list ROUT SCAN ALT Sets the scan Alternate Reference setting Alternate Reference Scan Settings ROUT SCAN DEL ROUT SCAN REF Removes channels from the scan list Sets the scan Reference Channel setting Reference Channel Scan Settings ROUT SCAN REP Sets the scan Repeat Count setting Repeat Count Scan Settings ROUT SCAN STAT Sets the Scan Enable setting Scan Enable Scan Settings SENS APER Sets the measurement time and Display Interval Display Interval Timing Settings Remote Operation Interface Commands Command SENS APER PRES Function Sets the measurement timing settings to preset values Associated Setting or Function screen PRESET PRECISION PRESET FAST PRESET LONG Timing Settings SENS APER SAMP Sets the measurement Sampl
143. f the combined result from 1 0 in units of 1x10 Test 3 Equal ratio sum 100 scale This test evaluates linearity errors at a resistance ratio near 0 5 with the measurement circuit operating at full scale The test has two parts For the first part one resistor of a 100 Q 100 Q resistor network is connected as Rx and the series combination of the two resistors is connected as Rs internally The first measured resistance ratio is reported as result A For the second part the opposite of the two resistors is connected as Rx and again the series combination is connected as Rs The second measured resistance ratio is reported as result B Ideally the sum of the two measured resistance ratios would be exactly 1 0 The reported error is the difference of the sum from 1 0 in units of 1x10 Test 4 Equal ratio sum 90 scale This test evaluates linearity errors at a resistance ratio near 0 5 with the measurement circuit operating at 90 of full scale The test is performed in the same way as Test 3 except the measurement circuit gain is reduced so that the circuit operates at the reduced scale The reported error is the difference of the sum from 1 0 in units of 1x10 Test 5 Equal ratio sum 75 scale This test evaluates linearity errors at a resistance ratio near 0 5 with the measurement circuit operating at 75 of full scale The test is performed in the same way as Test 3 except the measurement circuit gain is reduced so that the cir
144. fected are listed in the Store Configuration section UPDATE FIRMWARE F5 The Update Firmware function key may be used to update the internal software to a newer version when avail able from the manufacturer The Update Firmware function is always password protected The user will be prompted to enter the correct password to proceed A message appears instructing the user to plug in a USB memory device that contains the firmware update file A confirmation message screen appears prompting the user to press YES to proceed While the firmware update file is being read from the USB and loaded into the system the power must not be switched off If the power is switched off during the firmware update process the instrument may no longer operate and will need to be returned to the factory for servicing Caution Do not switch off the power while the firmware is being updated Once the firmware update process is completed a message indicates that the firmware has been successfully updated The user must then switch the power off and then on to restart and operate with the new firmware PASSWORD F4 In the Password screen the user may view and change password settings The Password screen is always password protected the default is 1234 The user will be prompted to enter the correct password to access the screen Password protection can be enabled for probe configurations resistor definitions certain measure func tions and system time
145. ft Right arrow keys and pressing the ENTER key save the change The available data field options and their descriptions are listed in the tables below Table 15 Default Statistical Fields Field Memory 1 Memory 2 Memory 3 Memory 4 1 MEAN MEAN MAXIMUM MEAN 2 STD DEV STD DEV MINIMUM STD DEV 3 SE OF MEAN N DELTA TIME 4 RESISTANCE RESISTANCE RESISTANCE DATE Table 16 Statistical Field Descriptions Option Description Equation ee ly MEAN arithmetic mean of measurements Mean Y y N j a Lio 2 STD DEV sample standard deviation of measurements Std Dev i y y ne Mean n 1 i iati std dev SE OF MEAN standard error estimated standard deviation of the SE of Mean mean Jn MAXIMUM maximum measurement MINIMUM minimum measurement SPREAD difference between maximum and minimum Spread Maximum Minimum N number of measurements sample size DELTA difference relative to a delta channel or offset RESISTANCE resistance measurement RATIO resistance ratio measurement TIME time from the system clock DATE date from the system clock As a note of further explanation SE OF MEAN provides an estimate of the uncertainty k 1 of the MEAN value SE OF MEAN is calculated from the sample standard deviation of unfiltered measurements not the same as the displayed standard deviation of filtered measurements and the sample size The method used to calculate SE OF MEAN disr
146. fy a fixed network address The network port may be used for remote control of the Super Thermometer by a PC and interface to network software such as Telnet or a COM port redirector driver In this mode the network port accepts a raw TCP connection on TCP port number 5025 CAUTION When DHCP is enabled do not remove the Ethernet cable and turn the power off The cable needs to remain plugged into the unit while cycling the power 65 1594A 1595A Super Thermometer Configuring the Network LAN Port 66 8 2 1 8 2 2 8 2 3 Configuring the LAN port is accomplished through the Remote Interface section of the System menu The LAN configuration parameters are HARDWARE MAC DHCP ENABLE IP ADDRESS GATEWAY SUB NET MASK HOST NAME and CONTROL ENABLE To configure the LAN port settings 1 Press the MENU key 2 Select the SYSTEM MENU F5 function key 3 Select the REMOTE INTERFACE F2 function key 4 Select the NETWORK F3 function key 5 Use the following instructions to configure each setting Note When addressing some LAN addresses computers will often interpret 0 5 in the IP address as OCTAL values As an example if an IP address is entered into the Super Thermometer as 129 196 017 023 and then an attempt to establish communication to the instrument the IP address of 129 196 17 23 should be used Attempting to establish a connection to 120 196 017 023 may result in a connection request to 129 196 15 19 Important
147. guration Protocol DHCP ciiinnininnininninncnncninciacccancinnn 66 8 2 3 Setting a Static Internet Protocol IP AUUTesS ooooooncccnnnncccnoocccconocccooonocoonnnccononccnononcnnno 66 8 2 4 Setting the LAN Gateway Address onmciocciininiociconncconocinncnncnnnn nono ncrnn rra narrar 67 8 2 5 Setting the LAN Subnet Mask 0 cccecceceeeeeseeceeeceeeeceeeceeeeseeeceeeseeeseeeeneeessescneeseeeeaees 67 8 2160 Setting the HOSTNAME cuco 67 8 3 Using the Web Interface ooooononocinnncinncccicccccononnconaccconnnnnnnnccnn nn EE nn cnn nn nn nannccnnnnnaas 68 8 4 Configuring the USB POterio nannaa aaa aE 68 8 5 Configuring the RS 232 Serial POlt oonnninnnnicinnicinnocicnocccnonononnoncccnnnronnn nn conan rra 69 8 6 Configuting the IEEE 488 Portuaria aa e 69 8 7 Interface COMMANAS niesione siina itasse nia eiia 70 grl O 70 8 7 2 WISCOMCOMMANGS A A 70 8 7 3 Descipti ons f COMMANAS i serae aa a a a ores 74 Broh NT 74 8732 AESE SVAlUGS a S E E EA 74 TSS ESR a E E ee ee 74 TOA O 75 Broo AR E E oe ene arene Pere reeree 75 8 7 3 6 TORE A sss eues Eaa S ust E a a S steed 75 ro A E 76 8 7 3 8 CAL DATE lt yeat gt smMOonthNh gt LEY gt in a a i Ee 76 8 7 3 9 CALSPAR LIN lt M lt VAU S iiine e e ii a rei riae E a 76 8 1 3 10 CALPAR RES lt NS VAUS Sa sess scessacpigedecsetaxcnidadeaddebancedan davies snddetbacanscesenbsasaddebensdenevadevesatnes 76 Sro CALPAR ZERO Val Siy e E E A E 76 87 312 CALCA AVER ALE oessa Eai R EEEE 77 Emo CALC AV
148. h lt unit gt O for ohms If a valid response cannot be returned because the given resistance is out of range or the probe definition is invalid no response is given and error 230 Data corrupt or stale is generated in the error queue INP REAR lt n gt RS IDEN lt id gt VAR NONE Example command INP REARI RS IDEN R25_01322 Example command INP REAR2 RS IDEN NONE Query form INP REAR lt n gt RS IDEN Example query response R25_01322 Example query response VAR Sets the resistor definition assigned to a rear reference resistor input Use the command INP lt n gt RS IDEN to assign a resistor definition to a front channel input Suffix lt n gt specifies the rear Rs input number and must be either 1 or 2 Parameter lt id gt must be either the ID of a resistor definition in the Resistor Library VAR variable or NONE Enclosing quotations marks are optional If lt id gt does not match the ID of a resistor definition in the Resistor Library or an allowed option error 224 Illegal parameter value is generated in the error queue If a valid resistor ID is assigned to the input the response to the query form is the ID of the resistor enclosed in quotation marks If the resistor assignment is variable or none the response is VAR or NONE respec tively without quotation marks 87 1594A 1595A Super Thermometer Interface Commands 88 8 7 3 62 8 7 3 63 8 7 3 64 8 7
149. he RESET STATISTICS F3 function key is selected Data Graph Section The Data Graph section displays either a data table for each active channel as it is measured or a graph of each channel s measurement trend The display is toggled from Data to Graph mode by pressing the SHOW DATA GRAPH F2 function When the data table is selected the Up Down arrow keys are used to scroll through the data table to view channels off the screen The data fields are reset when the RESET STATISTICS F3 function key is selected The graph settings are configured in the Graph Settings Screen see Section 5 7 4 4 GRAPH SETTINGS F4 on page 49 The graph window can be configured to display a separate graph for each channel or all chan nels on one graph Status and Alert Section The Status and Alert section resides at the bottom of the display above the function keys Depending on the situation the following are displayed in the Status and Alert section Measurement Progress Bar indicates the progress of the current measurement Countdown Timer shows the time remaining before measurement stops The timer is set in the Timing Set tings screen of the Measure menu see Section 5 7 3 2 TIMING SETTINGS F2 on page 39 If measure ment is stopped and restarted the timer starts over again Active Channel indicates the channel currently being measured When the measurement is completed the measurement value and channel number will appear in the channel
150. he menus and screens are displayed The options are ENGLISH CHINESE JAPANESE SPANISH GERMAN FRENCH and RUSSIAN ENGLISH is the default option DATE FORMAT sets the format used to display dates on the screen Available options are YY Y Y MM DD MM DD Y Y Y Y and DD MM Y Y Y Y The default option is YY Y Y MM DD This setting has no effect on communications commands and responses recorded data or library files DECIMAL FORMAT sets the decimal character used in decimal numbers on the display Available options are period and comma The default option is This setting has no effect on communications commands and responses recorded data or library files TEMPERATURE RESOLUTION sets the desired number of decimal places that appear in displayed tem perature measurements Available options are 0 1 through 0 000001 The default option is 0 00001 The actual number of decimal places of displayed temperatures may be reduced for large numbers This setting has no effect on communications commands and responses recorded data or library files The resolution of displayed resistances and resistance ratios is fixed at the maximum practical resolution SCREEN SAVER ENABLE enables or disables the screen saver If Screen Saver Enable is OFF the display will remain on indefinitely Enabling the screen saver saves power and extends the lifetime of the display The default option is OFF SCREEN SAVER DELAY sets the screen saver delay time A
151. he power on system self test and a system self test is not in progress A report only becomes available if the system self test runs to completion If no report is available error 230 Data corrupt or stale is generated in the error queue The response is 0 if no errors occurred TEST SYST STAT Example response 1 Reads the state of the system self test see Section 9 2 SYSTEM TEST F1 on page 103 A response of indicates a test is in progress 0 otherwise UNIT TEMP C K F Example command UNIT TEMP C Query form UNIT TEMP Alternate parameter DEF Sets the temperature Unit see section Unit The option F Fahrenheit will not be available if The SI Unit Lock setting is ON see Section 9 6 CALIBRATION PARAMETERS F5 on page 108 The RST command sets Unit to the default setting which is C 9 9 1 9 2 9 3 Calibration CURRENTTEST F2 Calibration Introduction This section explains the step by step instructions for calibrating and verifying functionality of the Super Thermometer to ensure it will operate correctly and meet published specifications If the instrument cannot be brought into specification using these instructions contact the nearest Fluke Authorized Service Center A complete Super Thermometer calibration is comprised of four parts Self Test Ratio Self Calibration Inter nal Resistor Calibration and Current Test The user may perform all four parts or only a single part if desired
152. hermometer setup and environmental conditions such as electromagnetic interference Due to the subjective nature of measurement noise it is not a guaranteed specification The specifications listed in the table below are obtainable in a typical laboratory environment It is important that the user make their own evaluation of measurement noise in the application and environment where the Super Thermometer is used Table 6 Temperature Measurement Noise Specifications Standard Error Conditions Rs Current of the Mean C Typical performance 25 Q SPRT at 0 C 25 Q 1 0 mA 0 00002 25 Q SPRT at 420 C 25 Q 1 0 mA 0 00006 100 Q PRT at 0 C 100 Q 1 0 mA 0 00001 100 Q PRT at 420 C 100 Q 1 0 mA 0 00003 10 kQ Thermistor at 25 C 10 kQ 10 mA 0 000003 Relative Measurement Current Accuracy Zero Power resistance values are calculated based on measurements taken at two levels of excitation current that differ by a factor of 1 4142 Only the portions of the errors in the currents that are uncorrelated contribute to error in the zero power resistance value The following specifications may be used to estimate the contribution of current error in zero power resistance measurements Table 7 Relative Measurement Current Specifications Range 99 confidence level Relative Accuracy mA 0 001 mA to 0 1 mA 0 1 mA to 2 mA 2 mA to 20 mA 0 0008 0 003 0 03 2 2 4 2 2 5 2 2 5 1
153. i Dajie Chao Yang District Beijing 100004 PRC CHINA Phone 86 10 6 5 12 3436 Telefax 86 10 6 5 12 3437 E mail xingye han fluke com cn Before You Start Authorized Service Centers Fluke South East Asia Pte Ltd Fluke ASEAN Regional Office Service Center 60 Alexandra Terrace 03 16 The Comtech Lobby D 118502 SINGAPORE Phone 65 6799 5588 Telefax 65 6799 5588 E mail antng singa fluke com When contacting these Service Centers for support please have the following information available e Model Number e Serial Number e Voltage e Complete description of the problem 2 2 1 Introduction and Specifications Specifications Introduction and Specifications Introduction The Fluke family of Hart Super Thermometers long ago established the standard for easy to use precision temperature measurement instrumentation Laboratories worldwide have selected the Super Thermometer not only for the assurance of achieving high quality results but also for the innovative features that increase productivity in the lab The Fluke 1594A and 1595A Hart Super Thermometers continue this legacy adding new patent pending measurement technology and features that truly are best in class Below is a summary of key capabilities and features e Typical 1595A accuracy 0 2 ppm 0 05 mK 1594A accuracy 0 8 ppm 0 2 mK e Sample rates as fast as 1 second e Measures SPRTs HTPRTs PRTs and thermistors e Four input channels on the front pa
154. ies by probe construction and measurement medium The default value is 01 00 1 minute Measurements taken during Settle Time are discarded Tip Settle time is important since it takes some time for a probe temperature to stabilize when the current level changes Therefore it is important to choose a settle time appropriate for the probe and the measurement environment MEASURE TIME sets the time period over which measurements are averaged for each portion of the zero power sequence For example if a Measure Time of 1 minute is selected measurements will be taken at each current level over a 1 minute span and the resulting average will be used in the zero power calculation The number of samples included in the average is based on the Measure Time and the Display Interval setting The Measure Time setting is in minutes and seconds The setting has a range of 00 10 to 10 00 The default value is 01 00 REPEAT NOMINAL enables or disables the Repeat Nominal option mentioned above When enabled the nominal current measurement will be repeated after the 1 4142x measurement AUDIO INDICATION enables or disables the Audio Alert feature that alerts the user when the zero power measurement sequence is completed START F1 starts the zero power measurement sequence When the START F1 function key is selected the zero power measurement sequence begins and the screen displays the following fields and function key Menus and Screens
155. ing are detailed descriptions of each submenu and its contents CHANNEL SETUP F1 The Channel Setup menu is used for configuring measurement channels and reference resistor settings The Channel Setups screen shows each channel and its settings Pressing the SETUP key on the front panel will access the Channel Setup screen directly from any other screen or menu For convenience the MEASURE MENU F4 function key is included in this menu as well as the Main Menu The Measure Menu is described in full detail after the Probe Menu section PRESS 4 TO CHOOSE A CHANNEL OR PRESS A FUNCTION KEY BELOW CHANNEL PROBE ID Rs CURRENT MEASURE 1 Z 2 5626 1854 100 Q 1 0 mA ON 3 UUT 25 Q 1 0 mA ON 4 UUT 100 Q 1 0 mA ON 1 1 UUT 100 Q 1 0 mA ON 1 2 UUT 100 Q 1 0 mA ON 1 3 UUT 100 Q 1 0 mA ON 1 4 UNDEF INED 100 Q 0 02 mA OFF 1 5 UNDEF INED 100 Q 0 02 mA OFF 1 6 UNDEF INED 100 Q 0 02 mA OFF 1 7 UNDEF INED 100 Q 0 02 mA OFF 1 8 UNDEF INED 100 Q 0 02 mA OFF 1 9 UNDEF INED 100 Q 0 02 mA OFF ASSIGN CHANNEL ON MEASURE PROBE SETTINGS OFF HENU Figure 10 Channel Setup Screen Using the Up Down arrow keys the user selects the channel to be configured Pressing the ON OFF F3 func tion key enables ON or disables OFF the selected channel Only one channel can be enabled unless SCAN ENABLE is set to ON see Section 5 7 3 1 SCAN SETTINGS F1 on page 39 A channel that is disabled will be skipped when SCAN ENABLE is set to ON A ch
156. ing has a range of 1 0E06 to 1 0E06 Tip Delta Mode is useful for automatically subtracting an offset from a measurement such as the lead resistance offset used when making 3 wire measurements DELTA CHANNEL specifies the channel to be used as the reference for the Delta calculation This setting is applicable when Delta Mode is set to CHANNEL Possible options are channels 1 through 4 when no scanner is attached If a scanner is attached channel is not available but the scanner channels are GRAPH SETTINGS F4 The Graph Settings function key opens a screen that contains settings for controlling how data graphs appear in the Measurement Screen in Show Graph mode The configuration fields in the Graph Settings screen are as follows COMBINED GRAPH determines if all enabled channels are plotted on the same graph or on separate graphs ON plots all channels on the same graph TIME SPAN configures the horizontal time scale or width of the graph window The options are 5 min 10 min 15 min 30 min 1 hr 2 hr 4 hr and 8 hr The default is 10 min AUTOMATIC CENTERING determines whether the center of the vertical axis is set automatically based on the data in the graph ON or if the center is fixed at the Vertical Center value OFF The default value is ON VERTICAL CENTER sets the center of the vertical axis ofthe combined graph when Automatic Centering is ON The setting has a range of 1 0E6 to 1 0E6 The default value is 0 0
157. inty of 0 001861 C Combining the Uncertainties At this point all of the uncertainties can be combined by root sum square RSS since they are uncorrelated The RSS sum produces a combined standard uncertainty of 0 002133 C Multiplying by the coverage factor k 2 and rounding results in a total expanded uncertainty of 0 0043 C Example 2 Calibrating an SPRT As explained in How the Super Thermometer Measures at the beginning of this section the calibration of an SPRT is performed by measuring the resistance at some required fixed point temperature and then at the triple point of water The two measurements are combined by division to get a W s value The uncertainty of W is based primarily on the ratio accuracy of the Super Thermometer In this example an SPRT is calibrated at 419 527 C FP of Zinc The RTPW is measured directly afterward The uncertainties resulting from the 1595A in this example are e Resistance ratio accuracy of the 1595A at 419 527 C e Measurement noise at 419 527 C e Resistance ratio accuracy of the 1595A at 0 01 C triple point of water e Measurement noise at 0 01 C e Reference resistor drift The uncertainties in this example are calculated and combined as described in Example 1 However there is a slight difference in the reference resistor drift component Reference Resistor Drift In Example 1 the 24 hour stability specification of the internal 25 Q is used This may not be
158. ion Measure Protection Sets the Average Enable for the sample average see Section 5 7 3 2 TIMING SETTINGS F2 on page 39 The RST command sets Average Enable to the default setting which is ON SENS AVER2 STAT lt boolean gt Query form SENS AVER2 Password protection Measure Protection Sets the digital filter s Filter Enable see Section 5 7 3 3 DIGITAL FILTER F3 on page 41 The RST command sets Filter Enable to the default setting which is ON SENS AVER2 COUN lt count gt Query form SENS AVER2 COUN Alternate parameter DEF MIN MAX Password protection Measure Protection Sets the digital filter s Average Count setting see Section 5 7 3 3 DIGITAL FILTER F3 on page 41 Parameter lt count gt is the average count Allowed values range from 2 through 100 This setting is only meaningful when Filter Enable is ON The RST command sets Average Count to the default setting which is 30 SENS AVER2 CLEA Clears the digital filter buffer This is equivalent to pressing the CLEAR FILTER function key in the Digital Filter screen see Section 5 7 3 3 DIGITAL FILTER F3 on page 41 SENS lt n gt FRES DATA Example command SENS4 DATA Example response 44 221571 Reads a channel s latest resistance measurement Suffix lt n gt is the channel number 1 through 4 for the corresponding front channel input 5 through 14 for channels of the first attached scanner and 15 through 24 for channels of the sec
159. is 0 1 Q C see tip above The result is 0 000018 C Relative Current Accuracy The relative measurement current specifications are listed in Table 7 of the Specifications section The stan dard uncertainty of the measurement current over the range 1 0 mA to 1 4142 mA is 0 0015 mA This is converted to temperature by multiplying by the SPRT self heating sensitivity at 0 01 C which is 0 0024 C mA The result is 0 0000036 C Reference Resistor Stability Since the individual measurements of the zero power measurement are taken in close proximity in time the drift of the reference resistor is considered negligible Combining the Uncertainties The uncertainties of the zero power measurement are combined by RSS with the rest of the uncertainties involved in the measurement See the previous examples for the other uncertainties Example 4 Measuring a 100 Q PRT In this example the temperature of a typical 100 Q PRT is measured at 420 C with a 1595A The uncertainties in the measurement associated with the 1595A are as follows e Resistance accuracy of the 1595A e Measurement noise at 420 C Resistance Accuracy at 420 C First calculate the 1595A absolute resistance accuracy at 257 Q the resistance of the 100 Q PRT at 420 C The one year absolute resistance standard uncertainty k 1 of the 1594A using the internal 100 Q resistor is 2 0 ppm To convert this to an uncertainty in temperature multiply 2 0 ppm by 1 0 x 1
160. is full no new resis tor definition is added and error 224 Illegal parameter value will be generated in the error queue INP RS COUN Reads the number of resistor definitions in the Resistor Library INP RS DEL lt id gt Example command CALC PROB DEL R25_01322 Password protection Resistor Protection Deletes a resistor definition from the Resistor Library Parameter lt id gt is the ID of the resistor definition to delete If lt id gt does not match the ID of any resistor in the Resistor Library nothing is deleted and error 224 Illegal parameter value is generated in the error queue If the deleted resistor was assigned to an input see commands INP RS FRON IDEN and INP RS REAR IDEN the input s reference resistor Rs setting will be changed to variable The Calcula tion setting for any channel that used the input for its Reference Resistor Rs setting will be changed from temperature or resistance to ratio INP RS FIRS Example response R25_ 01322 Reads the ID of the first resistor in the Resistor Library It also resets the catalog index used by the INP RS NEXT command If the Probe Library is empty no response is given and error 230 Data corrupt or stale is generated in the error queue INP lt n gt RS IDEN lt id gt VAR NONE Example command INP2 RS IDEN R25_01322 Example command INP4 RS IDEN NONE Query form INP lt n gt RS IDEN Example query response R25_01322
161. is used to save a change or to select an item When an item is changed ENTER must be pressed otherwise the item reverts to its original value upon exiting The MENU key is used to go directly to the Main Menu screen The EXIT key is used to exit from a menu or setting Pressing EXIT will leave an edit without saving the changes When entering a number if EXIT is pressed and held the entire number is deleted and the cursor is moved to the leftmost place in the number field The Function Keys are located below the display and are used to execute the function displayed directly above them Function keys are used to select menu options and in certain cases they are used to toggle a setting shown on the display Pressing any of the four Channel Select Keys will automatically activate the selected channel and illuminate the Channel Select Key in green If a channel is in standby mode the Channel Select Key is illuminated in amber If a channel is inactive the Channel Select Key is clear 4 2 3 1 Front and Rear Panel Features Front Panel Features Front Panel Display The Front Panel Display is shown in Figure 3 The display screen is used to show all measurements menus and configuration information 2 231 92828 c PROBE ID SPRT_5683_104 MEAN 231 928235 C CONVERSION ITS 90 STD DEV 0 000166 C Rs 2125 5 N CURRENT 1 0 mA SE OF MEAN 0 000039 C 231 9285 231 9283 231 9281 16 00 E ERALA ACTIVE CHANNEL 2
162. istical sample size see Section 5 7 4 2 FIELD SETTINGS F2 on page 48 Suffix lt n gt is the channel number 1 through 4 for the corresponding front channel input 5 through 14 for channels of the first attached scanner and 15 through 24 for channels of the second attached scanner CALC AVER TCON NORM MOV Query form CALC AVER TCON Alternate parameter DEF Sets the Statistics Mode setting see Section 5 7 4 3 STATISTICS SETTINGS F3 on page 49 If the parameter is NORM normal the sample size is unlimited the sample set accumulates until the statis tics are cleared If the parameter is MOV moving window the sample size is limited and once the sample size reaches the Sample Count value earliest samples are removed from the sample set when new samples are added The RST command sets Statistics Mode to the default setting which is NORM UNLIMITED CALC DELT CHAN lt channel gt Example command CALC DELT CHAN 1 Query form CALC DELT CHAN 79 1594A 1595A Super Thermometer Interface Commands 80 8 7 3 24 8 7 3 25 8 7 3 26 8 7 3 27 8 7 3 28 Sets the Delta Channel setting see Section 5 7 4 3 STATISTICS SETTINGS F3 on page 49 Parameter lt channel gt is the channel number to use as the reference which may be 1 through 4 for the cor responding front channel input 5 through 14 for channels of the first attached scanner and 15 through 24 for channels of the second attached scanner This
163. istics function key resets all statistics fields and sample counts CLEAR GRAPH CLEAR MESSAGE F4 The Clear Graph Clear Message function key clears the measurement trend graph When an alert message is displayed this function key changes to Clear Message which may be used to clear the alert message START STOP RECORD F5 The Start Stop Record function key is a toggling function key that starts and stops recording of measurements to memory see Section 5 7 3 4 RECORDING MENU F4 on page 41 Main Menu The Main Menu is accessed by pressing the MENU key The Main Menu contains the submenus used for Super Thermometer configuration and setup HAIN HENU PRESS A FUNCTION KEY BELOW Figure 6 Main Menu Screen The submenus located in the Main Menu screen are as follows CHANNEL SETUP for configuring measurement channels and reference resistor settings PROBE MENU for assigning probe definitions to measurement channels and managing the Probe Library MEASURE MENU for configuring channel scanning setting measurement timing configuring the digital filter and turning recording on and off 5 7 1 5 7 1 1 Menus and Screens Main Menu DISPLAY MENU used to configure display settings and statistics settings as well as selecting temperature measurement units SYSTEM MENU used to configure the remote interface ports set the system date and time configure pass word settings and calibrate the Super Thermometer The follow
164. it time and if the display was blanked switches the display on If Screen Saver Enable is OFF the display will remain on indefinitely Enabling the screen saver saves power and extends the lifetime of the display The default option is OFF SCREEN SAVER DELAY sets the screen saver delay time Available options are 5 min 10 min 15 min 30 min 45 min 1 hr and 2 hr The default option is 1 hr This setting is only relevant when Screen Saver Enable is ON DISPLAY BRIGHTNESS sets the brightness of the display backlight Available options are 50 60 70 80 90 and 100 The default option is 100 Reducing the display brightness saves power and extends the lifetime of the display In brightly lit environments the screen may be easier to read when Display Brightness is set to a higher value ITS 90 SUBRANGE ALERT enables ON or disables OFF the alert message that appears at the bottom of the Measurement screen when a temperature measurement from a probe using the ITS 90 Conversion is more than 10 C outside the range covered by the selected subranges The default option is ON Rs DUE ALERT enables ON or disables OFF the alert message that appears at the bottom of the Main Screen when the due date of a resistor in the Resistor Library is past The default option is OFF ALERT BEEP enables ON or disables OFF the audio indication that accompanies alert messages The default option is ON KEYPAD BEEP enables ON
165. l Guide The 1594A 1595A Super Thermometer User s Guide contains instructions for unpacking and setting up the instrument Specifications and an overview of Super Thermometer operation are also included The User s Guide is available in the following languages English Chinese Spanish Japanese German French and Russian The 1594A 1595A Super Thermometer Technical Guide contains complete information for setting up and operating the Super Thermometer It also includes instructions for remote operation calibration and mainte nance The Technical Guide is available in English only For ordering a replacement instruction manual DVD contact your local Fluke representative or service center All manuals are available online for download in PDF format Line Voltage and Fuses CAUTION To prevent possible damage to the instrument verify the correct fuse is installed for the selected line voltage setting The correct line power fuse and line voltage range was installed at the factory per the configuration that was ordered However it is important to verify the correct fuse value and line voltage setting The fuse is accessi ble on the rear panel in the PEM Power Entry Module The line voltage setting is shown in the PEM window see Figure on page 16 and see Section 2 2 Specifications on page 5 for the fuse rating To check or replace the fuse and to verify or change the line voltage setting refer to Figure on page 16 and proceed as
166. le function key in the Manage Resistors menu allows the user to export one resistor definition or the entire library to a file on a USB memory device If a resistor was selected in the Manage Resistors screen that resistor definition will be written to a file If ALL RESISTORS was selected the entire Resistor Library will be written to a file The screen shows the name of the file to be written The user may change the name of the file by pressing ENTER to open the alpha numeric editing screen Finally the user presses the CONTINUE function key to 5 71 2 1 3 3 5 71 2 1 3 4 5 71 2 1 3 5 Menus and Screens Main Menu write the file Ifa USB memory device has not yet been inserted the user is instructed to do so Allow about 10 seconds for the system to recognize the USB device before continuning Resistor definition files are written to a folder named 159x resistor on the USB memory device and have the extension res If the file does not exist it will be created If the file already exists and one resistor was selected its resistor definition will be appended to the data in the file If ALL RESISTORS was selected the contents of the existing file will be replaced with the resistor definitions in the resistor definition library MOVE UP F3 The Move Up function key changes the arrangement of the reference resistors in the resistor definition library by moving the selected resistor up one position If the first resistor i
167. le in Section 5 7 3 1 SCAN SETTINGS F1 on page 39 only those channels that are enabled for measurement will have standby current on depending on the Sensing Current and Standby Current settings Tip A probes sensing element is heated as current passes through it This effect is called self heating Self heating causes a probe 5 measured temperature to change slightly due to the heat being dissipated The measurement error associated with self heating depends on probe design and the level of measurement current To measure the effect of self heating use the Zero Power function in the Measure Menu see Section 5 7 3 5 ZERO POWER MEASUREMENT F5 on page 43 CALCULATION determines the type of reading the channel measurement will display The options are RESISTANCE RATIO and TEMPERATURE The TEMPERATURE option is available only if a probe defi nition configured for temperature measurement has been assigned to the channel see Section 5 7 2 PROBE MENU F2 on page 34 The Resistance option is not available if the channel s Reference Resistor Rs setting is set to Variable Resistance 5 7 1 2 1 5 7 1 2 1 1 5 7 1 2 1 1 1 5 7 1 2 1 1 2 Menus and Screens Main Menu SET UP Rs F1 Pressing the Set Up Rs function key displays the Rs definition assigned to each Rs input The Up Down arrow keys are used to scroll through the list to select an Rs input for configuration The following function keys al low the user to configure
168. m 99 confidence level 1 year 0 Q to 1 2 Q 1 Q 10 mA 0 Q to 12 Q 10 Q 3 mA 0 Q to 120 Q 25 Q 1 mA 0 Q to 400 Q 100 Q 1 mA 0 KQ to 10 KQ 10 KQ 10 uA 10 KQ to 40 KQ 10 KQ 10 yA 40 KQ to 100 KQ 10 KQ 2 uA 100 KQ to 500 KQ 10 KQ 1 uA Greater of 50 ppm or 0 000015 Q Greater of 13 ppm or 0 00003 Q Greater of 6 3 ppm or 0 00003 Q Greater of 5 ppm or 0 0001 Q Greater of 6 3 ppm or 0 000015 kQ 10 ppm 25 ppm 100 ppm Measurement Current Accuracy Measurement current accuracy is guaranteed to meet the following specifications The specifications are stated as percent of selected current or in absolute mA 1594A 1595A Super Thermometer Specifications 2 2 3 2 2 3 1 2 2 3 2 Table 5 Measurement Current Accuracy Specifications Current Range Accuracy 99 confidence level 1 year 0 001 mA to 0 005 mA 0 00005 mA 0 005 mA to 0 02 mA 1 0 02 mA to 0 2 mA 0 5 0 2 mA to 2 mA 0 2 2 mA to 20 mA 0 5 Ancillary Specifications Temperature Measurement Noise Temperature measurement noise indicates typical measurement noise in temperature measurements The speci fications below are given for averages taken over a period of 1 minute with a 2 second sample rate The effect of noise may be reduced for longer averages or may be greater for shorter averages Noise performance is dependent upon many conditions Some of the most important things to consider are the type of t
169. mber of displayed measurements not number of samples The Timing Settings screen contains the following measurement timing fields SAMPLE PERIOD sets the length of time required to obtain a fundamental ratio measurement sample The options are 1 2 5 and 10 seconds The default option is 2 seconds Note When the sample period is changed measurement will stop It must be restarted by the user The 1 second option is useful for applications that require measurements at the highest possible speed such as thermal response tests However it can be expected to observe greater measurement noise will be greater when using a 1 second sample period The 2 seconds option provides good stable measurements for most types of thermometer probes The 10 seconds option may yield better results for very high resistances or with probes that have unusually large settling effects which may be caused by electrical leakage or dielectric absorption A probe may be tested for electrical settling by comparing measurements made with the 2 seconds and 10 seconds sample periods With the 1 second and 2 seconds options the sensing current is reversed at a basic interval of 0 2 second With the 5 seconds and 10 seconds options the current is reversed at a basic interval of 1 2 seconds Sample Period cannot be larger than the Display Interval setting DISPLAY INTERVAL determines how often measurements are passed to the display statistics fields memory and remote
170. measurement is disabled the channels will not actually be scanned and measured until measurement is started A channel number in lt channel list gt may be 1 through 4 for the corresponding front channel input 5 through 14 for channels of the first attached scanner and 15 through 24 for channels of the second attached scanner If a scanner is attached channel 1 will not be enabled ROUT SCAN ALT lt boolean gt Query form ROUT SCAN ALT Alternate parameter DEF Sets the scan Alternate Reference setting see Section 5 7 3 1 SCAN SETTINGS F1 on page 39 The RST command sets Alternate Reference to its default setting which is OFF ROUT SCAN DEL lt channel list gt Example command ROUTE SCAN DEL 4 Removes channels from the scan list Each of the channels specified in lt channel list gt is disabled this is equivalent to setting each channel OFF in the Channel Menu ROUT SCAN REF lt channel gt Query form ROUT SCAN REF Example command ROUTE SCAN REF 4 Sets the scan Reference Channel setting see Section 5 7 3 1 SCAN SETTINGS F1 on page 39 Parameter lt channel gt is the front channel number to use as the reference which may be through 4 when no scanner is attached If a scanner is attached the channel option is not available but the scanner channels are allowed numbered 5 through 14 for the first scanner 15 through 24 for the second The default option is chan nel 2 For the reference channel to be m
171. minal current setting An alternative method of zero power measurement enabled by the Repeat Nominal setting adds an additional nominal current measurement taken after the 1 414x reading The zero power value derived from this tech nique is calculated with the following where is the zero power value is the first nominal current value is the double power value and is the final nominal current value The difference between the first and final nominal current readings indicates whether the probe s temperature has changed during zero power measurement This is important since a change in temperature could introduce error into the zero power calculation When Repeat Nominal is enabled the Super Thermometer reports the difference between the two nominal current values as Drift When a zero power measurement is completed the results are displayed on the screen and written to memory The values displayed are Channel Number Probe ID Zero Power Measurement Sensing Current Mean and Standard Deviation for each step and the Nominal Current Self Heating Offset The configuration fields and function keys in the Zero Power Measurement screen are as follows CHANNEL specifies the channel on which the measurement will be done Only one channel at a time can be measured in zero power mode SETTLE TIME sets the time allowed for measurement settling after a change in current The value 00 00 is in minutes and seconds The settle time needed var
172. mpt is made to read it INIT CONT lt boolean gt Query form INIT CONT Starts or stops measurement This is equivalent to pressing the START MEASUREMENT or STOP MEA SUREMENT function key in the Measurement Screen A lt boolean gt parameter value enables measurement 0 disables measurement The RST command disables measurement INIT STOP BEEP lt boolean gt Query form INIT STOP BEEP Alternate parameter DEF Sets the stop timer s Audio Indication setting see Section 5 7 3 2 TIMING SETTINGS F2 on page 39 The RST command sets Timer Beep to the default option which is ON INIT STOP DUR lt value gt Example command INIT STOP DUR 1200 Query form INIT STOP DUR 83 1594A 1595A Super Thermometer Interface Commands 84 8 7 3 48 8 7 3 49 8 7 3 50 8 7 3 51 8 7 3 52 8 7 3 53 Alternate parameter DEF MIN MAX Sets the stop timer s Timer Duration setting see Section 5 7 3 2 TIMING SETTINGS F2 on page 39 The value is the number of seconds The range is to 86399 and the default is 3600 one hour This setting is only meaningful when Stop Timer Enable is ON The RST command sets Timer Duration to 3600 INIT STOP STAT lt boolean gt Query form INIT STOP Alternate parameter DEF Sets the Stop Timer Enable see Section 5 7 3 2 TIMING SETTINGS F2 on page 39 The RST command sets Stop Timer Enable to the default setting which is OFF INIT STOP TIME Example response 874
173. n which the menus and screens are displayed The options are ENGLISH CHINESE JAPANESE SPANISH GERMAN FRENCH and RUSSIAN ENGLISH is the default option DATE FORMAT sets the format used to display dates on the screen Available options are YY YY MM DD MM DD Y Y Y Y and DD MM Y Y Y Y The default format is Y Y Y Y MM DD This setting has no effect on communications commands and responses recorded data or library files DECIMAL FORMAT sets the decimal character used in decimal numbers on the display Available options are period and comma The default option is This setting has no effect on communications commands and responses recorded data or library files TEMPERATURE RESOLUTION sets the desired number of decimal places that appear in displayed tem perature measurements Available options are 0 1 through 0 000001 The default option is 0 00001 The actual number of decimal places of displayed temperatures may be reduced for large numbers This setting has no effect on communications commands and responses recorded data or library files The resolution of displayed resistances and resistance ratios is fixed at the maximum practical resolution SCREEN SAVER ENABLE enables or disables the screen saver When the screen saver is enabled ON the display backlight is switched off after the screen saver wait time specified by the Screen Saver Wait set ting if no keys are pressed Pressing any key resets the screen saver wa
174. nable or disable F as an allowed temperature unit option When this is set to ON temperatures may be displayed in units of C and K only and F will not be available as an option for the Unit setting see System Menu Temperature Unit in the Menus and Screens section Calibration Interval Ratio Self Calibration can be performed as often as needed to ensure proper ratio performance Since no ad ditional equipment is needed for Ratio Self Calibration it can be performed at the user s convenience as often as necessary Minimally it should be checked every 6 months during the first year of use and an alignment performed as needed Internal Resistor Calibration should be performed on a 6 month interval during the first year of use After the first year a 12 month interval is recommended 9 6 2 Calibration CALIBRATION PARAMETERS F5 Standby Current Check It may be necessary to check standby current to ensure proper operation The standby current must be manu ally checked Each channel s standby current can be checked with the following steps NOTE If a scanner is connected channel I will not be available to test Power off the Super Thermometer and disconnect the scanner in order to test standby current on channel 1 1 Connect a 100 resistor to channel 1 2 Press the SETUP key and disable all other channels except channel 4 3 Highlight Channel and press CHANNEL SETTINGS F2 Set REFERENCE RESISTOR to 100 Se
175. nannarans 111 WE Troubleshooting cistitis ninia 113 O 115 Figures Figure 1 PEM Power Entry MOQuI8 oooooonoccccccoooocccccoononononooononononoonnnonononnon nn Annea AEAN 16 Figure 2 FrONEVMIEW Less A 17 Figure 3 Front Panel Display cian rl li iia is 19 Figure 4 Rear V EW 2 0 cccccccceecceeceeceeceeeeeeeeeeeteccaeaaaaeeeeeeeeeeeeeseeceeccccueeeeeeeeeeeentesseesencuseeees 20 Figure 5 External Resistor IMPUtS ooo tercio dd 20 Figure 6 Power Entry Module sssssssssssisiisiessstkkttktti tetit ttt EE EEEE EEEE EEEEEEEEEEEE EEEE EEEE EEEE 22 Figure 7 Location Descriptor EXAM le oociinncoinnnnocccccoooonccnnonon ono nonnnnn EET canon ERARA REEE 23 Figure 8 Alpha Numeric Interface ooooocoonionoccccccooonnnnocooonnnnononon ono nonooon nn nnnonon nn nonana ronca 23 Figure 9 EEN 26 Figure 10 Channel Setup Criminal 29 Figure 11 Probe Menu SCree n ococcococicocccccooonooonnnconoonononnnnncno no noonn rn nan nr rn nn rn nnn nr cenar rrananncios 34 Figure 12 Measure Menu SreRN oococoocccccooccconncccononononnncnnnonnnnonnnnnnn nr naar rn naar rn narrrnnanncis 38 Figure 13 Measurement Process Block Diagrami cinininccccinooccccccccnonncncnonnnn nc nccnna no nccanans 39 Figure 14 Display Menu SCreeN occoocicocccccooocoooonccononnononnnnnno no tEn n rn cnn r rra anna naar rro nar nrnnanncios 46 Figure 15 System Menu SCreeN coococcocccccoooncoonncconoononnnnncnnnnnrnnon nr n nan nr rn anna nan nr ESSEE ES SEESE EE 50 Equis 1 6 TAO UE WIN ta
176. nel accept most probe terminations with the patented DWF gold plated tellurium copper quick connect terminals e Configurable standby current for each input channel minimizes self heating transients when scanning between channels e Two input channels on the back panel dedicated for external standard resistors keep the front panel inputs free for Reference Thermometers or Standard Resistors and UUTs e Channel Select Keys above each input channel change color to indicate whether a channel is actively measuring in standby or inactive pressing a channel key activates the selected channel e Temperature controlled internal reference resistors allow for traceable temperature and absolute resistance measurements in ambient conditions from 15 C to 30 C e Patent pending Ratio Self Calibration performs a linearity check or calibration of the Super Thermometer ratio accuracy without the need of any external equipment e Automated Zero Power Measurement allows for determination and or cancellation of a thermometer s self heating error e Updated computer interface with USB control RS 232 and IEEE 488 included as standard e Ethernet connection allows for remote view of the Super Thermometer s display from a web browser e USB memory device on the front panel to accommodate data logging transfer of probe parameters and storage and retrieval of Super Thermometer user configurations e VGA output allows the Super Thermometer s screen to
177. nfidence level Ancillary Specifications additional specifications that help the user understand more of the uncertainties involved in measurement Since they may be subject to the application and setting in which the Super Ther mometer is used they are not guaranteed for performance verification but should be considered typical General specifications general specifications such as measurement range environmental operating range dimensions etc Primary Specifications Resistance Ratio Accuracy Resistance ratio accuracy is the ability of the Super Thermometer to measure the ratio of two resistances Rx Rs It is determined primarily by the linearity of the measurement circuit The following specifications apply for resistance ratios measured with a reference resistor of 25 Q or 100 Q using a measurement current of 0 5 mA to 2 0 mA Other reference resistors are specified using a factor as explained in the following specifica tion table Performance verification is guaranteed for 99 confidence level specifications within the specified operating temperature range of 15 C to 30 C The listed uncertainties are in terms of parts per million ppm of reading unless stated otherwise Table 2 Resistance Ratio Accuracy Specifications 1594A Accuracy 1595A Accuracy Ratio Range ppm of reading ppm of reading 95 confidence level 1 year 0 95 to 1 05 0 24 ppm 0 06 ppm 0 5 to 0 95 1 05 to 2 0 0 64 ppm 0 16 ppm 0 25 to 0 5 2 0 to 4
178. nglish by pressing and releasing the ENTER key and then pressing and releasing the SETUP key Select the correct language if necessary Screen is blank The screen saver may be on Press any button to turn the screen back on The system may be in standby Press and release the Power Standby key on the front panel to bring the unit out of standby mode Keypad does not respond The keypad has been locked by a remote operation command The keypad can be unlocked by sending the following command to unlock it SYST KLOC 0 Resistance statistics field is blank when When in ratio mode the Super Thermometer will not produce a resistance measuring in ratio mode reading If both measurements are required set the Super Thermometer to measure resistance and select ratio as one of the statistics fields Index Symbols 1 4142 30 43 10 100 Base T Ethernet 65 24 hour format 50 2590 Scanner 20 C 50 56 108 F 50 56 108 A ABSOLUTE ERROR 107 Absolute Resistance Accuracy 7 Accuracy Measurement Current 7 Resistance 7 AC power 9 Active Channel 27 ADD PROBE F1 34 ADD RESISTOR F1 31 ADDRESS 52 69 ADJUST PARAMETERS F2 106 ADJUST RESISTOR F2 108 Alert Beep 95 ALERT BEEP 47 57 alert message 27 81 ALPHA 35 86 Alpha Numeric Interface 23 Alternate Reference 91 ALTERNATE REFERENCE 39 Applying the Specifications 9 arrow keys 18 23 ASCII 70 ASCII code 10 52 ASSIGN PROBE F1 29 61 ASSIGN RESISTOR F1 31 ASTM E 1137 35
179. nse DEF 81 1594A 1595A Super Thermometer Interface Commands 82 8 7 3 37 8 7 3 38 8 7 3 39 8 7 3 40 8 7 3 41 8 7 3 42 Reads a statistics field setting of the visible statistics fields memory set see Section 5 7 4 2 FIELD SET TINGS F2 on page 48 Suffix lt n gt is the field number which may be through 4 The response will be one of the following MEAN SDEV SEM MAX MIN SPR N DELT RES RAT TIME or DATE DISP FIEL MEM lt n gt Example command DISP FIEL MEM 4 Query form DISP FIEL MEM lt n gt Alternate parameter MIN MAX DEF Reads or sets a statistics fields memory set for display see Section 5 7 4 2 FIELD SETTINGS F2 on page 48 The parameter lt n gt may be a number from to 4 DISP FIEL MEM lt n1 gt FEED lt n2 gt lt feed gt Example command DISP FIEL MEM4 FEED4 TIME Query form DISP FIEL MEM lt n1 gt FEED lt n2 gt Alternate parameter DEF Reads or sets a statistics field setting of a statistics fields memory set see Section 5 7 4 2 FIELD SETTINGS F2 on page 48 Suffix lt n1 gt is the memory set number which may be 1 through 4 Suffix lt n2 gt is the field number which may be 1 through 4 The parameter lt feed gt may be one of the following MEAN SDEV SEM MAX MIN SPR N DELT RES RAT TIME or DATE DISP HELP lt boolean gt Query form DISP HELP Sets the display Start up Help Screen enable This setting determines whether the Start up Help
180. o the USB FILE field and pressing the ENTER key to display the Alpha Numeric Interface If the data set and filename have been selected the user presses CONTINUE F1 to start the transfer If the file already exists the user will be prompted to continue and append the data to the existing file ERASE DATA F5 The Erase Data function key is used to erase a selected data set or all data sets using ALL DATA at the end of the list from internal memory The user may select a data set using the Up Down arrow keys and pressing the ENTER key Upon pressing CONTINUE F1 a warning message will appear and the user must confirm the action to continue Pressing the EXIT key or CANCEL F2 function key at any point during this process exits the menu without deleting data Important Do not turn power off while data is being erased because the internal memory files may be lost ZERO POWER MEASUREMENT F5 The Zero Power function key is used for configuring and performing zero power measurements Zero Power Measurement Description When measurement current is passed through a temperature probe sensor the sensor self heats and creates a measurement error Probe self heating errors vary by probe construction current levels and ability of the mea surement medium to dissipate heat from the probe Measurements in air are especially prone to self heating The Zero Power Measurement function can be used to remove measurement error caused by self heating It
181. olynomial conversion settings A0 A3 A0 A3 exponential number The settings that are applicable to the probe definition depends on the Type setting and Conversion setting and may depend on other settings also such as an ITS 90 subrange Any channel that has the probe assigned to it and has Calculation setting set to temperature will have Calcula tion see Section 8 7 3 27 CALC lt n gt TYPE TEMP RES RAT on page 80 changed to resistance when the probe s Type setting is set to resistor or the Conversion setting is set to none INP PROB TEST lt id gt lt resistance gt Example command INP PROB TEST PRT _A46002 65 449411 Example response 419 527 C Reads the temperature calculated from resistance using the probe definition Parameter lt id gt is the ID of a probe definition in the Probe Library If lt id gt does not match the ID of a probe definition in the Probe Library error 224 Tllegal parameter value is generated in the error queue Parameter lt resistance gt is the resistance from which temperature is calculated The normal response contains the calculated temperature and the unit separated by a comma lt Temperature gt lt unit gt The lt temperature gt value is converted to units determined by the Unit setting see Section 5 7 4 5 TEMPERA TURE UNIT F5 on page 50 If the probe Type is RESISTOR or Conversion is NONE the lt resistance gt parameter value is returned instead wit
182. on to produce a value in parts per million ppm STANDARD ERROR is the standard deviation of the samples comprising the measurement divided by the square root of the number of samples This provides an estimate of the standard uncertainty of the mea surement mean due to measurement noise It does not include uncertainty of the calibrated resistance of the standard resistor TIME is the time at which the test ended taken from the system clock It is in 24 hour format DATE is the date on which the test ended taken from the system clock It is in the format specified by the Date Format setting in the User Settings screen Tolerances for the reported error which are required for assessing pass or fail conditions may be found in the Absolute Resistance Uncertainty section of the Specifications section The results of the resistance calibration may be written to a file on a USB memory device using the WRITE FILE F1 function key as explained below The calibration parameter associated with the calibrated internal reference resistor may be adjusted to improve the accuracy of the resistor using the ADJUST RESISTOR F2 function key as explained below WRITE FILE F1 The Write File function allows the user to write the results of the resistance calibration to a file on the USB memory device The user may change the file name by pressing the ENTER key and using the Alpha Numeric Interface Once the file name is set and after the USB m
183. ond attached scanner If the suffix number is omitted the latest measurement regardless of channel is returned If the Calculation setting for the channel is either RESISTANCE or TEMPERATURE see Section 8 7 3 27 CALC lt n gt TYPE TEMP RES RAT on page 80 a resistance value in ohms is returned If calculation is ratio a resistance ratio value is returned In either case the returned value is obtained after processing by the digital filter If no measurement is available no response is returned and error code 230 Data corrupt or stale is gener ated in the error queue SENS lt n gt RRAT DATA Example command SENS4 RRAT DATA Example response 1 30244715 Reads a channel s latest resistance ratio measurement Suffix lt n gt is required which specifies the channel number 1 through 4 for the corresponding front channel input 5 through 14 for channels of the first attached scanner and 15 through 24 for channels of the second at tached scanner If the suffix number is omitted the latest measurement regardless of channel is returned 93 1594A 1595A Super Thermometer Interface Commands 94 8 7 3 89 8 7 3 90 8 7 3 91 8 7 3 92 8 7 3 93 8 7 3 94 The returned value is a resistance ratio after processing by the digital filter If no measurement is available no response is returned and error code 230 Data corrupt or stale is generated in the error queue STAT OPER Example response 16 Re
184. ower off The cable needs to remain plugged into the unit while cycling the power IP ADDRESS specifies the network port s IP address when DHCP is OFF or shows the dynamically as signed IP address when DHCP is set to ON GATEWAY specifies the gateway server s IP address to be used when DHCP is OFF 51 1594A 1595A Super Thermometer Main Menu 52 A 9 7 9 2 4 5 75 2 5 5 7 5 3 SUBNET MASK specifies the network s subnet mask when DHCP is OFF Gateway and Subnet Mask are not available when DHCP is set to ON HOST NAME is a name that may be used to identify the Super Thermometer on the network It may consist of a combination of letters and digits up to 16 characters in length The first character must be a letter Hyphen characters are allowed within the Host Name string The default Host Name is F159X lt serial number gt where lt serial number gt is the unique serial number of the Super Thermometer CONTROL ENABLE determines whether remote interface commands are accepted via the network port The options for this setting are OFF ON and QUERY ONLY When the setting is OFF the Super Thermom eter will not accept or respond to any commands received from the network port When the option is ON all commands are allowed though some may be password protected The QUERY ONLY option allows data and settings to be read but not changed The default is ON Important When Control Enable is either OFF or QUERY
185. put 5 through 14 for channels of the first attached scanner and 15 through 24 for channels of the second attached scanner The returned value has the same units as the measurement returned by the FETC command If the calculation is temperature the unit of measurement is determined by the Unit setting see Section 5 7 4 5 TEMPERA TURE UNIT F5 on page 50 If no result is available no response is returned and error 230 Data corrupt or stale is generated in the error queue CALC lt n gt AVER CLEA Example command CALC AVER CLEAR Clears a channel s statistics Suffix lt n gt is the channel number 1 through 4 for the corresponding front channel input 5 through 14 for channels of the first attached scanner and 15 through 24 for channels of the second attached scanner If the suffix number is omitted statistics for all channels are cleared This is equivalent to pressing the RESET STA TISTICS function key in the Main Screen The RST command also clears the statistics for all channels CALC AVER COUN lt value gt Example command CALC AVER COUNT 50 77 1594A 1595A Super Thermometer Interface Commands 78 8 7 3 16 8 7 3 17 8 7 3 18 Query form CALC AVER COUN Alternate parameter DEF MIN MAX Sets the statistics Sample Count setting Parameter lt value gt is the maximum number of samples in the moving window when the Statistics Mode set ting is LIMITED see Section 8 7 3 22 CALC AVER TCON NORM M
186. r attached to the same network as the Super Ther mometer When the instrument detects that a host computer is not on the same network using the network number the data is sent through the gateway to reach the host computer The gateway address is a 32 bit number This number is represented as four 3 digit numbers The default subnet mask address set from the factory is 0 0 0 0 To change gateway address use the following steps Note Gateway address is not available if DHCP is enabled Disable DHCP before entering the gateway address 1 In the NETWORK screen use the Up Down arrow keys to select GATEWAY 2 Use the front panel numeric keys to enter the gateway address Press the ENTER key to save the address 3 Cycle the unit s power to allow the new address to take effect Setting the LAN Subnet Mask If communication to the Super Thermometer passes through a router or gateway and DHCP is disabled the subnet mask and default gateway address on both the host computer and the Super Thermometer must be set Get the correct subnet mask and gateway address from the network administrator The subnet mask is a 32 bit number This number is represented as four 3 digit numbers The default subnet mask address set from the factory is 255 255 255 0 To change subnet mask address use the following steps Note Subnet mask address is not available if DHCP is enabled Disable DHCP before entering the subnet mask address 1 In the
187. r troubleshoot unexpected operation results Use the following list of problems and solutions to troubleshoot the issue If the issue cannot be resolved using this section contact the nearest Fluke Authorized Service Center for additional support Problem Failure to produce valid measurements Check probe wiring Use an ohmmeter to check continuity of the 4 wire connection to the probe Verify that one common pair of the 4 wire connection is connected to P1 and C1 terminals while the other pair is connected to the P2 and C2 terminals Make sure the probe or resistor is connected to the same channel indicated by the channel number in the upper left hand corner of the screen Check to make sure the correct reference resistor is selected If an external reference resistor is selected ensure it is connected to either Rs1 or Rs2 on the back panel or either channel 2 or 4 on the front panel Check the reference resistor definition to ensure it has been correctly configured Try connecting a resistor or shorting the input to see if it measures Try setting the conversion to resistance first If the Super Thermometer is able to measure resistance correctly but displays for temperature there may be an error with the conversion type or characterization coefficients Check these carefully The resistance of the probe may be outside the range of the selected conversion type and coefficients Make sure probe leads are not shorted to other DWF connectors
188. rameter value 1 enables recording 0 disables recording The RST command has no effect on this setting DISP ALER CLEA Clears any alert message that is active DISP ALER READ Example response 1 Maximum temperature exceeded Reads the active alert message The response given is the alert message number and description comma sepa rated and with the description enclosed in quotation marks If no alert message is active the response is 0 No alert The following table lists the possible responses Alert Cause 0 No alert No alert message is active 1Maximum temperature exceeded A measured temperature exceeds the limit defined for a probe 2sITS 90 subrange exceeded A measured temperature is outside the ITS 90 subranges defined for a probe 3 Resistor due for calibration A defined resistor in the Resistor Library is past due for calibration The active alert message may be cleared using the DISP ALER CLEA command DISP DATE FORM YMD DMY MDY Query form DISP DATE FORM Alternate parameter DEF Sets the display Date Format setting see Section 5 7 4 1 USER SETTINGS F1 on page 47 The default setting is YMD DISP DEC FORM PER COMM Query form DISP DATE FORM Alternate parameter DEF Sets the display Decimal setting see Section 5 7 4 1 USER SETTINGS F1 on page 47 The default set ting is PER DISP FIEL FEED lt n gt Example command DISP FIEL FEED4 Example respo
189. rary Parameter lt id gt is the ID of the probe definition to delete If lt id gt does not match the ID of any probe in the Probe Library nothing is deleted and error 224 Illegal parameter value is generated in the error queue If the deleted probe was assigned to a channel the channel s probe setting is changed to undefined see Section 8 7 3 57 INP lt n gt PROB IDEN lt id gt on page 85 INP PROB FIRS Example response PRT_A46002 Reads the ID of the first probe in the Probe Library It also resets the library index used by the INP PROB NEXT command 1752 If the Probe Library is empty the response is an empty string INP lt n gt PROB IDEN lt id gt Example command INP1 PROB IDEN PRT_A46002 Example command INP2 PROB IDEN NONE Query form INP lt n gt PROB IDEN Assigns a probe definition to the channel Suffix lt n gt specifies the channel number 1 through 4 for the corresponding front channel input 5 through 14 for channels of the first attached scanner and 15 through 24 for channels of the second attached scanner Parameter lt id gt must either be the ID of a probe definition in the Probe Library or NONE undefined En closing quotations marks are optional If lt id gt does not match the ID of a probe definition in the Probe Library error 224 Tllegal parameter value is generated in the error queue If a valid probe ID is assigned to the channel the response to the quer
190. ration files Using the Up Down arrow keys the configuration is selected Pressing ENTER or the CONTINUE F1 function key opens the file The user is prompted to continue before the changes are implemented The Recall Configuration function does not affect probe definitions resistor definitions time and date remote interface port settings password settings calibration parameters or recorded data If an assigned probe defini tion no longer exists in the Probe Library when a configuration is recalled the channel is set to UNDEFINED Likewise a reference resistor input will be set to VARIABLE if the resistor ID is not found in the Resistor Library 53 1594A 1595A Super Thermometer Main Menu 54 5 7 7 5 7 7 3 1 5 7 7 3 2 5 7 7 1 DELETE CONFIG F3 The Delete Configuration function may be used to delete a configuration file in internal memory The screen shows a list of configuration files found in the internal non volatile memory The user presses the Up Down arrow keys to select one of the configuration files then CONTINUE F1 or ENTER to delete the file The use must confirm the action before the configuration is deleted RESTORE DEFAULT F4 The Restore Default function may be used to restore settings to factory default values The user must press the YES F4 function key to run the restore function The NO F5 function key or EXIT key will exit the screen without restoring default settings The settings that are af
191. resistance of any device where the probe might come in contact with a conductor that is electrically energized Severe electric shock personal injury or death may occur e DO NOT position this instrument in a manner where it is difficult to reach the power cord or power entry module mains switch When rack mounting the instrument ensure the rack power cord and mains supply switch are accessible CAUTIONS e If the instrument is dropped struck or handled in a way that causes internal or external physical damage immediately unplug the instrument discontinue use and contact a Fluke Authorized Service Center for repair Do not attempt to disassemble or repair the instrument Refer repairs or replacement of components to a Fluke Authorized Service Center e DO NOT connect AC voltage to any input terminal on the instrument Permanent damage to the instrument will result Authorized Service Centers Please contact one of the following authorized Service Centers to coordinate service on your Fluke product Fluke Corporation 799 E Utah Valley Drive American Fork UT 84003 9775 USA Phone 1 801 763 1600 Telefax 1 801 763 1010 E mail supportOhartscientific com Fluke Nederland B V Customer Support Services Science Park Eindhoven 5108 5692 EC Son NETHERLANDS Phone 31 402 675300 Telefax 31 402 675321 E mail ServiceDesk fluke nl Fluke Int Corporation Service Center Instrimpex Room 2301 Sciteck Tower 22 Jianguomenwa
192. responding front channel inputs 5 through 14 for chan nels of a first attached scanner or 15 through 24 for channels of a second attached scanner If the lt channel gt parameter is omitted the latest measurement regardless of channel is returned If a measurement is available the response is given in the following format lt measurement value gt lt unit gt lt channel number gt lt date and time gt lt measurement value gt is the value of the measurement It may be a temperature resistance or resistance ratio The number of decimal places depends on the measured parameter Trailing zeros are omitted lt unit gt may be C F or K for a temperature measurement O for a resistance measurement or R for a resistance ratio measurement lt channel number gt is 1 through 4 for corresponding front channel inputs 5 through 14 for channels of a first scanner or 15 through 24 for channels of a second scanner lt time and date gt gives the time and date of the measurement separated by one space The time is in 24 hour format The date is in the format Y Y Y Y MM DD If no measurement is available no response is returned and error code 230 Data corrupt or stale is gener ated in the error queue The command STAT OPER may be used first to determine whether a new measure ment has completed and command STAT QUES COND may be used to determine whether the new measure ment is valid before an atte
193. ress 67 96 German 15 19 47 82 Getting Started 57 GPIB 95 Graph 49 GRAPH SETTINGS F4 49 Guard 59 GUM 5 H HARDWARE MAC 51 Hardware Mac Address 66 Height 9 Host Name 67 97 HOST NAME 52 HTML 51 65 I ID 34 IEC 625 21 IEC 751 35 TEEE 488 21 52 65 69 95 IEEE 488 F4 52 IFC 52 Inspection 15 Instruction Manuals 15 Interface Commands 70 INTERNAL 53 Internal Memory 41 42 Internal Resistor Calibration 108 IP address 51 66 IP Address 96 IP ADDRESS 51 ISO Guide to the Expression of Uncertainty in Measurement 5 ITS 90 9 27 35 83 86 ITS 90 SUBRANGE ALERT 47 57 J Japanese 15 19 47 82 K K 50 56 108 Key Beep 95 KEYPAD BEEP 47 58 L LAN 21 65 Language 19 LANGUAGE 47 57 Language setting 82 leakage 40 limited 79 LIMITED 49 Limited mode 49 linearity 6 104 LINEARITY C1 106 LINEARITY C2 106 LINEARITY C3 106 LINEARITY C4 106 LINEFEED 51 52 69 Line Power 16 line voltage 15 22 Linux 17 Local Area Network 65 Location Descriptor 23 M MAC address 51 Main Menu 28 Maintenance 111 Making Measurements 61 MANAGE PROBES F5 37 MANAGE RESISTORS F3 32 Manufacturer 50 maximum 78 MAXIMUM 48 Maximum Current 30 86 89 MAXIMUM CURRENT 31 35 Maximum operating altitude 9 MAXIMUM TEMPERATURE 35 mean 77 MEAN 45 48 MEAN 1 45 MEAN 2 45 MEAN 3 45 MEASUREMENT 107 Measurement Current Accuracy 7 Measurement Inputs 17 measurement noise 8 12 40 Measurement
194. ress may be set to a number between 1 and 30 The default address is 22 Always press the ENTER key after changing the address TERMINATION determines if a carriage return character ASCII code 13 or linefeed character ASCII code 10 terminates a response The default option is LINEFEED An IEEE 488 EOI message also accompanies the final character of every transmission The IEEE 488 port accepts either or any combination of a linefeed carriage return or EOI as a terminator The CLEAR INTERFACE F1 function key is used to clear the input and output buffers and reset the IEEE 488 interface just as if the IFC or SDC control message was received 69 1594A 1595A Super Thermometer Interface Commands 70 8 7 8 7 1 8 7 2 Interface Commands An alphabetical listing of the commands implemented by the Super Thermometer is shown in Table 19 on page 70 These commands can be used with all of the remote operation ports An example and description of each command is included following the Remote Operations Command table Command Syntax The Super Thermometer accepts commands that set parameters execute functions or respond with requested data Commands are in the form of strings of ASCH encoded characters Commands consist of a command header and if necessary parameter data All commands must be terminated with either a carriage return ASCII 0D hex or 13 decimal or new line character ASCII 0A hex or 10 decimal Letter characters
195. ring an External Reference Resistor The Super Thermometer is equipped with a set of internal resistors If needed up to four external resistors can be connected using Rs1 and Rs2 inputs on the back panel and Ch2 and Ch4 inputs on the front panel Use the following instructions for connecting and measuring with an external resistor Ls Suspend measurement by going to the Measurement screen and pressing the STOP MEASUREMENT F1 function key Connect a reference resistor using one of the Rs inputs Ensure the current and potential connections are correct Go to the Add Resistor screen by using the following steps a Press the SETUP key to open the Channel Setup screen b Select the CHANNEL SETTINGS F2 function key 4 ay Making Measurements Making A Zero Power Measurement c Select the SETUP RS F1 function key d Select the DEFINE RESISTOR F2 function key e Select the ADD RESISTOR F1 function key Enter a unique ID in the ID field Pressing the ENTER key will open the Alpha Numeric Interface for text entry Enter the resistance value of the resistor in the RESISTANCE VALUE field Caution The Resistance Value field is used in measurement for the calculation of the Rx resistance Entering this value incorrectly will cause measurement error 6 T Set the maximum measurement current allowed for the reference resistor If necessary enter the calibration date and due date for the external reference resis
196. ror gt is the error in units of 1x10 lt of tol gt is the absolute value of the error divided by the tolerance expressed in percent lt SE gt is the standard error of the test result error in units of 1x10 lt date and time gt is the date and time of the test The date is in the format Y Y Y Y MM DD The time is in 24 hour format ADJUST PARAMETERS F2 The Adjust Parameters function allows the user to update the linearity parameters LINEARITY C1 LINEAR ITY C2 LINEARITY C3 and LINEARITY C4 to correct error observed during the Ratio Self Calibration The Adjust Parameters function is always password protected The user will be prompted to enter the correct password to continue The screen shows the previous values of the calibration parameters and proposed new values based on calcula tions using the Ratio Calibration test results The user presses YES F4 to change the values of the linearity parameters in memory The user may press the NO F5 function key or the EXIT key to cancel the change When completed the linearity calibration parameters will be automatically adjusted to correct for the er rors observed during the Ratio Self Calibration The linearity parameters may be viewed in the Calibration Parameters screen see Calibration Parameters section Ratio Self Calibration should be repeated to verify the calibration RESISTANCE CALIBRATION F4 The Resistance Calibration function allows the user to test and cali
197. s 0 OFF INP PROB ADD lt id gt Example command INP PROB ADD PRT _A46002 Password protection Probe Protection 8 7 3 54 8 7 3 55 8 7 3 56 8 7 3 57 8 7 3 58 Remote Operation Interface Commands Adds a new probe definition to the Probe Library Before a probe can be assigned to a channel and tem perature measured the probe must have its definition added to the Probe Library see Section 8 7 3 57 INP lt n gt PROB IDEN lt id gt on page 85 Parameter lt id gt is the ID of the new probe definition It can contain letters numerals hyphens periods for ward slashes and underscores It must be between one and 24 characters in length inclusive If lt id gt is different from all other IDs in the Probe Library and space is available in the Probe Library a new probe definition will be added and given the specified ID The probe parameters will initially be set to default values The command INP PROB PAR should be used to set the parameters If lt id gt matches the ID of a probe already in the Probe Library or the Probe Library is full no new probe defi nition is added and error 224 Illegal parameter value will be generated in the error queue INP PROB COUN Alternate parameter MAX Reads the number of probe definitions in the Probe Library INP PROB DEL lt id gt Example command INP PROB DEL PRT_A46002 Password protection Probe Protection Deletes a probe definition from the Probe Lib
198. s cs ccessccanccnenaiancsiesnas nadn innin dane ASAE EPEAK iE AATE AA 20 4 3 3 1 External Resistor MPU Senise e a a E E E AER 20 43 1 Scanner COMMECHON essiensa a aaa a EA e aa a 20 4 3 2 Future Peripheral Connection oooocnnnonnnnnninncoonnconcnnoncnn conan cnn ro nara rra rancia 21 43 3 Remote Operation COnmectiONS teorias lid 21 434 Line Voltage COME iras alta 22 1594A 1595A Super Thermometer 435 Earth Ground COMECION reino craca anaconda into atendida 22 5 Menus and ScreenS cesececceesseseeececnesnseeeneceennseeeeeeeenseeeeeseeenseeees 23 Bal Introduction iii 23 5 2 Changing SettidgS oooooonnccccnnoooococcnooonnnononononnonononon ono EE STESA EN NENAS ENKANTEAREN 23 53 Password Protect da a ceed dda oat ees 24 5 4 Menu Navigate 24 A EEE E O 24 5 6 Measurement Screens 25 5 6 1 Channel Measurement Display ooonnonicnnnninnninnconccnonncnncnnancrno conan rro rara rara 26 5 62 Channel Summary Sec veria ii ida 26 5 6 3 Statistics Fields ti dd alada 27 564 Data Graph Sectionin a EE E EEA EE 27 5 6 5 gt Status and Alert Ni a A 27 5 6 6 START STOP MEASUREMENT F1 occcccnnncncnccnnnonnnncncconononcnnnononnncncnnnnonnnnncnnconnnnnncnononns 28 5 6 7 SHOW TABLE GRAPH F2 cecsccscsccscscescssesvseescsecsessesesessessesesssestssestssestieteusesensetevsseesess 28 5 6 8 RESET STATISTICS FB o cccccccccsccscsccscssescsscsssscsvsesseseesusessesssessevstseestsevssietensesenseteesseesess 28 5 6 9 CLEAR GRAPH
199. s selected or if ALL RESISTORS is se lected there is no action MOVE DOWN F4 The Move Down function changes the arrangement of the reference resistors in the resistor definition library by moving the selected resistor down one position If the last resistor is selected or if ALL RESISTORS is selected there is no action DELETE RESISTOR F5 The Delete Resistor function key may be used to delete a resistor definition from the resistor definition library If a resistor was selected in the Manage Resistors screen that resistor will be deleted If ALL RESISTORS was selected the entire library will be erased A message appears prompting the user to confirm the delete operation The user may press the YES func tion key to confirm and proceed with deleting the resistor definition or library Pressing the NO function key cancels the operation and returns to the Manage Resistors menu Pressing the EXIT key will also cancel the operation with no change 33 1594A 1595A Super Thermometer Main Menu 34 5 7 2 Is S 5 7 2 1 PROBE MENU F2 PROBE MENU PRESS 4 TO CHOOSE A PROBE THEN PRESS A FUNCTION KEY BELOH 1 5626 1854 PRT 2009 01 22 2 UUT PRT 2009 01 22 3 THERMISTOR THERMISTOR 2009 12 01 Figure 11 Probe Menu Screen The Probe Menu contains the function keys needed for editing and managing probe definitions stored in the Probe Library The Probe Library is non volatile memory inside the Super Thermometer which
200. string may contain upper case letters numerals and underscores and may be up to 24 characters in length Issuing the command with parameter DEF sets the Host Name to the default value which is FLUKE 159X lt serial number gt SYST COMM USB STAT lt boolean gt Query form SYST COMM USB Sets the USB port s Port Enable setting see Section 8 4 Configuring the USB Port on page 68 SYST CONF CHAN Example response 4 Reads the number of available channels The Super Thermometer by itself has 4 available channels If one optional scanner is attached the number of available channels with be 14 If two optional scanners are at tached the number of available channels will be 24 Channel is counted even though it is not enabled when a scanner is attached SYST CONF SCAN Example response 2590 Reads the model number of an attached scanner The model number is enclosed in quotation characters If no scanner is attached the response is an empty string enclosed in quotation characters SYST DATE lt year gt lt month gt lt day gt Query form SYST DATE Example query response 2009 12 31 Password protection Time Date Protection Sets the Date of the system clock 97 1594A 1595A Super Thermometer Interface Commands 8 73 116 SYST ERR Example response 100 Command error Reads the next error in the error queue When an error is read it is removed from the error queue and the next error ma
201. sword access state The response is 0 if access is disabled and 1 if access is enabled SYST PASS GROU MEAS lt boolean gt Query form SYST PASS GROU MEAS Password protection unconditional Alternate parameter DEF Sets the password Measure Protection setting see Section 5 7 7 1 PASSWORD F4 on page 54 When Measure Protection is on settings related to measurement and their associated commands are protected SYST PASS GROU PROB lt boolean gt Query form SYST PASS GROU PROB Password protection unconditional Alternate parameter DEF Sets the password Probe Protection setting see Section 5 7 7 1 PASSWORD F4 on page 54 When Probe Protection is on settings related to probe definition and their associated commands are protected SYST PASS GROU RES lt boolean gt Query form SYST PASS GROU RES Password protection unconditional Alternate parameter DEF Sets the password Resistor Protection setting see Section 5 7 7 1 PASSWORD F4 on page 54 When Resistor Protection is on settings related to resistor definition and their associated commands are protected SYST PASS GROU TIME lt boolean gt Query form SYST PASS GROU TIME Password protection unconditional Alternate parameter DEF Sets the password Time Date Protection setting see Section 5 7 7 1 PASSWORD F4 on page 54 When Time Date Protection is on setting the time and date is protected SYST PASS NEW lt current password gt lt new password gt
202. t SENSING CURRENT to 1 0 mA Set STANDBY CURRENT to ON 4 Press and hold the EXIT key to return to the Measurement screen Select the START MEASUREMENT F1 function key The Channel Select Key should be amber above channel and green above channel 4 The amber color indicates the channel is in the standby current mode The current can now be measured by inserting a current meter in series between the C1 or C2 terminal and the 100 2 resistor lead An alternative method is using a volt meter to measure the voltage drop across the 100 ohm resistor and then compute the current 5 Calculate the difference or error between the actual 1 0 mA and the measured readings Error should be less than 0 05 mA 6 Repeat steps 1 through 5 for the other channels 109 Maintenance 10 Maintenance Avoid operating the instrument in excessively wet oily dusty or dirty environments If the outside of the instrument becomes soiled it may be wiped clean with a damp cloth and mild detergent DO NOT use harsh chemicals on the surface that may damage the paint or plastic e The instrument should be handled with care Avoid knocking dropping or vibrating the instrument e This instrument is tested and calibrated at the factory Continued regular testing and calibration is recommended e Routinely check the ratio accuracy using the Ratio Self Calibration function 111 Troubleshooting 11 Troubleshooting The purpose of this section is to help the use
203. t is then divided by the sensitivity dR dT 11 1594A 1595A Super Thermometer Specifications 12 2 2 5 3 11 2 2 5 3 12 2 2 5 3 13 2 2 5 3 14 2 2 5 4 2 2 5 4 1 of the SPRT at 157 C which is 0 1 Q C see tip above This results in a standard temperature uncertainty of 0 001028 C Measurement Noise at 157 C During measurement at 157 C the standard error of the mean as reported by the 1595A is observed to be 0 00004 C Note The user must monitor measurement noise and use the actual measured measurement noise in the uncer tainty calculations Uncertainty of the Calibration Report RTPW In this example the RTPW is not measured and entered into the 1595A The RTPW from the SPRT calibration report is entered into the 1595A The standard k 1 uncertainty of the RTPW value listed on the calibration report must be included In this example it is 0 0001 C As explained in the previous example all uncertain ties related to RTPW must be multiplied by W of the measured temperature Multiplying by 1 612 yields 0 000161 C Drift of the RTPW of the SPRT Since an SPRT tends to drift the long term drift should be included as a source of uncertainty In this example the SPRT is allowed to drift 0 002 C The assumed distribution of this uncertainty is rectangular To convert to a standard uncertainty divide by 1 732 square root of 3 The result 0 001155 C multiplied by 1 612 yields a standard uncerta
204. tatistical sample size N Main Screen CALC AVER TCON Sets the Statistics Mode setting Statistics Mode Statistics Settings CALC DELT CHAN Sets the Delta Channel setting Delta Channel Statistics Settings CALC lt n gt DELT DATA Reads a channel s delta result Delta Main Screen CALC DELT MODE Sets the Delta Mode setting Delta Mode Statistics Settings CALC DELT OFFS Sets the Delta Offset setting Delta Offset Statistics Settings CALC lt n gt TYPE Sets the channel s Calculation setting Calculation Channel Settings DATA REC ALL Sets the data recording Record Statistics setting Record Statistics Recording Settings DATA REC FILE Sets the data recording USB File setting USB File Recording Settings DATA REC MEM Sets the data recording Memory Device setting Memory Device Recording Settings DATA REC STAT Enables data recording START STOP RECORDING Main Screen DISP ALER CLEA Clears any alert message that is active CLEAR MESSAGE Main Screen DISP ALER READ Reads the display alert message Main Screen DISP DATE FORM Sets the display Date Format setting Date Format Display Settings DISP DEC FORM Sets the display Decimal setting Decimal Display Settings DISP FIEL FEED lt n gt Reads a statistics field setting of the visible statistics fields memory set Main Screen DISP FIEL MEM
205. te UUT resistance so it is important that it is entered correctly MAXIMUM CURRENT establishes the maximum current allowed to be applied during measurement This prevents excessive current from being applied to the reference resistor CALIBRATION DATE used to define when the reference resistor was calibrated If not used the digits can all be set to zeros DUE DATE used to alert the user when the reference resistor is due for calibration This is only applicable if Rs DUE ALERT is enabled in the User Settings screen see Section 5 7 4 1 USER SETTINGS F1 on page 47 SAVE F1 The Save function key saves the settings CANCEL F5 The Cancel function key exits Add Resistor without saving changes 31 1594A 1595A Super Thermometer Main Menu 32 9 7 1 2 1 1 3 9 7 1 2 1 2 9 7 1 2 1 3 9 7 1 2 1 3 1 e 43 9 7 1 2 1 3 2 EDIT RESISTOR F2 The Edit Resistor function key opens the highlighted Rs definition for editing The configuration fields are explained in the Add Resistor section above READ RESISTOR F3 Read Resistor allows the user to load a pre configured reference resistor definition from a USB memory device To load a resistor definition insert a USB memory device that contains a resistor configuration into the front panel Allow about 10 seconds for the system to recognize the USB device and then press OK F5 A list of resistor definition files stored on the memory device appears on the screen S
206. ted and have no associated protection setting An example is the Calibration Parameters screen which always requires the correct password before any of the settings can be changed CALIBRATION F5 The Calibration menu contains functions and settings for testing and maintaining proper performance of the Super Thermometer Refer to Section 9 Calibration on page 103 for test and calibration instructions The following are the Calibration Menu function keys SYSTEM TEST F1 The System Test function key is used to perform a system self test This tests various components of the Super Thermometer and reports the results If System Test indicates failures contact the nearest Fluke Autho rized Service Center See Section 9 2 SYSTEM TEST F1 on page 103 for more information CURRENT TEST F2 The Current Test function allows the user to test the accuracy of the sensing current on the front panel input channels See Section 9 3 CURRENT TEST F2 on page 103 for more information on how to perform a current test RATIO CALIBRATION F3 The Ratio Self Calibration function allows the user to perform a ratio linearity check or calibration A check allows the user to verify ratio accuracy without making changes to ratio parameters Calibration measures the Super Thermometer ratios and makes adjustments to the ratio parameters A check should always be per formed after running the ratio self calibration function to verify that alignment was s
207. ters should not be changed except as part of the Super Thermometer calibration procedure performed by a qualified service technician CALC lt n gt AVER ALL Example command CALC3 AVER ALL Example response 231 928581 0 000488 0 000212 231 92862 231 928479 23 Example response 231 928581 231 928581 231 928581 1 Example response 0 Reads a channel s statistical mean standard deviation standard error of the mean maximum minimum and sample size Suffix lt n gt is the channel number 1 through 4 for the corresponding front channel input 5 through 14 for channels of the first attached scanner and 15 through 24 for channels of the second attached scanner The response is given in the following format lt mean gt lt std dev gt lt std error gt lt max gt lt min gt lt N gt If a value is invalid or not available the field is left empty in the response the associated field separator comma remains The statistical values have the same unit as the measurement returned by the FETC command If the calcula tion is temperature the unit of measurement is determined by the Unit setting see Section 5 7 4 5 TEMPER ATURE UNIT F5 on page 50 CALC lt n gt AVER AVER Example command CALC3 AVER AVER Example response 231 928581 Reads a channel s statistical mean see Section 5 7 4 2 FIELD SETTINGS F2 on page 48 Suffix lt n gt is the channel number 1 through 4 for the corresponding front channel in
208. the Adjust Parameters function is used This function re quires a password because it will adjust internal calibration constants The START F1 function key begins the Ratio Self Calibration As the test proceeds the screen reports the results of each part of the test The user may press the CANCEL F5 function key or EXIT key to cancel the test The following is a description of each segment of Ratio Self Calibration Test 1 Zero This test evaluates offset errors at a resistance ratio of 0 A 0 Q resistor is internally connected as Rx and a 100 Q resistor is connected as Rs The test is performed twice the measurements reported as re sult A and result B The combined result is an average of the two Ideally the measured resistance ratio would be exactly 0 0 The reported error is the difference of the combined result from 0 0 in units of 1 lt 10 Test 2 Complement This test evaluates scale errors at a resistance ratio near 1 The test has two parts For the first part a 100 Q resistor is internally connected as Rx and another 100 Q resistor is connected as Rs The first measured resistance ratio is reported as result A For the second part the two resistors are exchanged The second measured resistance ratio is reported as result B The combined result is the product of the two mea Calibration RATIO CALIBRATION F3 sured resistance ratios Ideally the product would be exactly 1 0 The reported error is half the difference o
209. the memory device in terms of number of measurements is reduced by about a factor of two The function key used to Start and Stop Recording is located in the Measurement Menu Section 5 6 10 START STOP RECORD F5 on page 28 VIEW DATA F2 The View Data function key is used to view measurements that have been recorded into internal memory The View Data screen displays the list of datasets recorded in memory The user pages through the datasets using the Left Right Arrow Keys and views data in a dataset using the Up Down Arrow Keys 5 73 4 3 5 73 4 4 9 7 3 4 5 5 1 3 5 Menus and Screens Main Menu READ FILE F3 The Read File function key allows the user to view measurements that have been recorded in a file on the USB memory device If a USB device has not been inserted in the front panel the user will be prompted to do so A list of files appears on the screen and the user selects the file to be opened using the arrow keys and then opens the file by pressing the ENTER key When the file is opened the contents are displayed and the arrow keys are used to move through the file to view the data WRITE FILE F4 The Write File function key is used to copy data from internal memory onto the USB memory device The user may select a dataset using the Left and Right arrow keys ALL DATA in the DATA SET field can be used to transfer all datasets to the USB device The USB device filename can be entered by moving the cursor t
210. the programmed subrange alerts in measurement screen inform the user when a defined ITS 90 subrange is exceeded see Display Settings submenu in Display Menu The following are the Add Probe Screen function keys TEST CALCULATION F1 The Test Calculation function key helps the user verify the probe calibration coefficients were entered correct ly A resistance is entered and a temperature is calculated based on the calibration coefficients The calculated temperature is compared with the probe s calibration report to verify correct coefficient entry SAVE F2 The Save function key saves the newly entered probe information into the Probe Library Exiting without selecting SAVE cancels all changes CANCEL F5 The Cancel function key exits the Add Probe screen without saving changes COPY PROBE F2 The Copy Probe function key allows the user to create a new probe definition based on an existing definition In the Probe Menu screen select the probe definition to be copied Press the COPY PROBE F2 function key Update the PROBE ID field with a unique probe ID Press the SAVE F2 function key to save the copied definition If a unique ID is not entered the ID will be appended with a _1 automatically EDIT PROBE F3 The Edit Probe screen is used to edit probe definitions that have been entered into the Probe Library When Edit Probe is selected the same probe definition fields found in the Add Probe screen are shown
211. to confirm the selection Use Table 17 Recommended Reference Resistors and Sensing Current on page 62 as a guide for the selection Enter the correct sensing current using Table 17 on page 62 or the probe manufacturer s instructions as a guide Determine whether standby current see Channel Setup section is to be On or Off Select the desired measurement calculation The options are RESISTANCE to output the probe s resistance only RATIO to output the ratio of the probe s resistance versus the reference resistor and TEMPERATURE only if calibration coefficients were entered in the probe definition Press the EXIT key to move back to the Channel Setup screen 61 1594A 1595A Super Thermometer Scanning Multiple Temperature Probes 62 If the desired measurement channel is set to Off use the ON OFF F3 function key to toggle the channel to On Pressing the Channel Select key located above the channel connection will also set the channel to On 8 Press the EXIT key twice or press and hold the EXIT key to go to the Measurement screen 9 In the Measurement screen select the START MEASURE Fl function key to start measurement sampling Table 17 Recommended Reference Resistors and Sensing Current Probe Type Reference Resistance Sensing Current 25 Q SPRT 250 1 0 mA 100 Q PRT or RTD 100 Q 1 0 mA 2 5 Q SPRT 100 5 0 mA 0 25 Q SPRT 10 14 14 mA 1000 Q PRT or RTD 10kQ 0 05 mA
212. tor The Super Thermometer will use the due date to warn the user when the resistor is due for calibration 8 Select the SAVE F1 function key to save the definition 9 Press the EXIT key to go up one menu to the Set Up Rs screen Use the Up Down arrow keys to 10 11 highlight the Rs input to which the external resistor is connected Select the ASSIGN RESISTOR F1 function key to open a list of defined reference resistors Use the Up Down arrow keys to highlight the resistor s definition Press the ENTER key to assign the resistor to the selected Rs input Now when selecting the reference resistor in Section 7 2 Measuring a Temperature Probe on page 61 step 6 a the newly entered external resistor will appear as an option 7 6 Making A Zero Power Measurement A temperature probe self heats when measurement current is passed through its sensing element Typically self heating will cause measurement error The Super Thermometer Zero Power function allows the user to measure how much a probe self heats It is also able to automatically measure a probe at zero power Use the following instructions for performing a zero power measurement 2 3 10 11 Press and hold the EXIT key to go to the Measurement screen If necessary suspend measurement by pressing the STOP MEASUREMENT F1 function key Using the instructions in the Getting Started section connect a temperature probe to one of the measurement input channels
213. ts of C and K only and F will not be available as an option for the Unit setting see Section 5 7 4 5 TEMPERATURE UNIT F5 on page 50 6 6 1 A 6 2 Getting Started User Settings Screen Getting Started Powering on the Super Thermometer CAUTION Before powering the Super Thermometer on ensure that the line voltage selection is set properly Refer to Section 3 3 Line Voltage and Fuses on page 15 for instructions Power the Super Thermometer on by setting the power switch located on the back panel to the On position After power is on pressing the Power Standby switch on the front panel puts the system into hibernation leav ing key components such as the resistor oven powered on The first time the unit is powered on the User Settings screen will be displayed after startup Later in the sec tion it will be explained how this feature is turned off so the Measurement screen is displayed when the unit is powered on User Settings Screen The User Settings screen allows the user to configure system settings such as language temperature measure ment resolution screen saver settings and alarms As mentioned previously the User Settings screen is the first displayed upon the first power up if the Start Up Help setting is enabled This setting can be turned off by the user after the user settings have been configured The following fields are displayed in the User Settings screen LANGUAGE sets the language in which t
214. ty calculations Resistance Ratio Accuracy at 0 01 C Uncertainties related to measuring the RTPW of the SPRT must be included in the analysis However RTPW uncertainties are magnified when applied to uncertainties of temperatures that are above 0 C At 157 C this magnification is estimated by multiplying RTPW uncertainties by the W value at 157 C 1 612 in this example The resistance of the SPRT at the triple point of water is approximately 25 5 Q The resistance ratio against the 25 Q reference resistor is then about 1 02 From the resistance ratio accuracy specifications of the 1595A the standard uncertainty due to linearity while measuring a resistance ratio of 1 02 is 0 03 ppm This specification 2 2 5 3 9 te S 2 2 5 3 6 2 2 5 3 1 2 2 5 3 8 2 2 5 3 9 2 2 5 3 10 Introduction and Specifications Specifications is converted to temperature by dividing 0 03 ppm by 1 0 x 10 and then multiplying by 1 02 The result is then divided by W sensitivity dW dT at 0 01 C which is 0 004 The final result is 0 000008 C After multiply ing by W 1 612 the uncertainty of the RTPW resistance ratio when applied to 157 C is 0 000013 C T90 Measurement Noise at 0 01 C During measurement of the RTPW it is observed that the standard error of the mean is 0 0000018 Q To convert this value into temperature divide by the resistance sensitivity dR dT of the SPRT at 0 01 C dR dT at 0 01 C is 0 1 Q C
215. uccessful See Section 9 4 RATIO CALIBRATION F3 on page 104 for more information RESISTANCE CALIBRATION F4 The Resistance Calibration function allows the user to test and calibrate the internal reference resistors See Section 9 5 RESISTANCE CALIBRATION F4 on page 106 for more information CALIBRATION PARAMETERS F5 Important Calibration parameters should not be changed except as part of the Super Thermometer calibration procedure performed by a qualified service technician 55 1594A 1595A Super Thermometer Main Menu 56 In the Calibration Parameters screen the user may view and change measurement calibration settings The calibration parameters can be viewed with no password but a password is required to make changes Calibration parameters include calibrated values for each of the internal resistors and the linearity coefficients for the resistance ratio measurements Since the accuracy of the Super Thermometer depends on these values they must be accurate Refer to Section 9 4 2 ADJUST PARAMETERS F2 on page 106 for instructions needed to adjust the calibration parameters Apart from the calibration parameters the Calibration Parameters screen also includes the following configu ration fields CALIBRATION DATE used to record the date the Super Thermometer is calibrated SI UNIT LOCK enables or disables F as an allowed temperature unit option When this is set to ON tem peratures may be displayed in uni
216. uper Thermometer menu system is several layers deep this section uses a location descriptor at the introduction of menu function keys This helps the user identify where the function key resides in the menu system Below is a location descriptor example Figure 7 Location Descriptor Example Changing Settings Most screens within the menu system contain configuration fields used for changing settings Whenever a configuration field is changed the ENTER key must be pressed to save and apply the new value To change a setting the field must be highlighted The highlight can be moved through the fields using the Up Down arrow keys Configuration fields that have selection options are changed by pressing the Left Right arrow keys to the desired setting and pressing ENTER Numeric type fields are used for setting numeric settings which include probe coefficients time and date for example Values are set using the digit keys The left and right arrow keys move among the digits to change a digit in the number The sign key and EXP key are necessary for signed and exponential values The DEL key may be used to delete a digit in the number ENTER must be pressed to save a new value Some configuration fields allow entry of alpha and numeric characters For these fields the Alpha Numeric Interface is used It automatically opens by pressing the ENTER key when a text field is highlighted PROBE ID USE ARROH KEYS PRESS ENTER TO ADD A CHARACTER
217. urrent used for measuring the probe The value entered is the current used to measure the probe when 1 x Power is selected in the Channel Settings screen Typical current settings are 1 0 mA for a 25 5 Q or 100 Q PRTs and 0 010 mA for 10 kQ thermistors see Table 13 Recommended Reference Resistor for Various Probe Types on page 30 Caution Sensing current must be carefully selected Current that is too high can overheat and possibly damage a sensor Refer to the sensor s manufacturer recommendations when setting the current MAXIMUM CURRENT the maximum allowed sensing current This setting is used to prevent excessive current from damaging the sensor This setting supersedes the Nominal Current setting MAXIMUM TEMPERATURE sets the temperature limit for the probe When a probe s measured tem perature exceeds this setting a warning message is indicated on the Measurement screen and an audio alarm is sounded if the Alert Beep setting is set to ON see Section 5 7 4 1 USER SETTINGS F1 on page 47 CONVERSION the type of calibration coefficients or characterization used for the probe The characteriza tion defines how temperature is calculated for a probe When conversion is set to NONE measurements will be in resistance See the following Probe Conversion Information table for more information Table 14 Probe Conversion Information Type Conversion Coefficients Equations PRT ITS 90 High Subrange 5 38 to 29 C See ITS
218. ut 5 through 14 for channels of the first attached scanner and 15 through 24 for channels of the second attached scanner The returned value has the same units as the measurement returned by the FETC command If the calculation is temperature the unit of measurement is determined by the Unit setting see Section 5 7 4 5 TEMPERA TURE UNIT F5 on page 50 The standard error of the mean is available if at least four measurements have been acquired from the channel If no result is available no response is returned and error 230 Data corrupt or stale is generated in the error queue CALC lt n gt AVER SPR Example command CALC3 AVER SPREAD Example response 0 000626 Reads a channel s statistical spread see Section 5 7 4 2 FIELD SETTINGS F2 on page 48 Suffix lt n gt is the channel number 1 through 4 for the corresponding front channel input 5 through 14 for channels of the first attached scanner and 15 through 24 for channels of the second attached scanner The returned value has the same units as the measurement returned by the FETC command If the calculation is temperature the unit of measurement is determined by the Unit setting see Temperature Unit F5 in the Display Menu If no result is available no response is returned and error 230 Data corrupt or stale is generated in the error queue CALC lt n gt AVER SSIZ Example command CALC3 AVER SSIZE Example response 40 Reads a channel s stat
219. vailable options are 5 min 10 min 15 min 30 min 45 min 1 hr and 2 hr The default option is 1 hr DISPLAY BRIGHTNESS sets the brightness of the display backlight Available options are 50 60 70 80 90 and 100 The default option is 100 Reducing the display brightness saves power and extends the lifetime of the display ITS 90 SUBRANGE ALERT enables ON or disables OFF the warning message that appears at the bot tom of the Measurement Screen when a probe s measured temperature exceeds its ITS 90 subrange by more than 10 C The default option is ON Rs DUE ALERT enables ON or disables OFF the warning message that appears at the bottom of the Mea surement screen when the due date of a resistor in the Resistor Library has expired The default option is OFF ALERT BEEP enables ON or disables OFF the audio indication that accompanies warning messages The default option is ON 57 1594A 1595A Super Thermometer Connecting a Probe or Resistor 58 6 3 KEYPAD BEEP enables ON or disables OFF the audio indication that accompanies each key press The default option is ON START UP HELP determines whether the User Settings screen appears automatically after power on When the settings is ON the User Settings screen will appear every time the power is switched on If the setting is OFF the Measurement screen will appear instead The default option is ON NOTE The following apply after power on when
220. voice Buyer for importation costs of repairs replacement parts when product purchased in one country is submitted for repair in another country Fluke s warranty obligation is limited at Fluke s option to refund of the purchase price free of charge repair or replacement of a defective product which is returned to a Fluke authorized service center within the war ranty period To obtain warranty service contact your nearest Fluke authorized service center or send the product with a description of the difficulty postage and insurance prepaid FOB Destination to the nearest Fluke authorized service center Fluke assumes no risk for damage in transit Following warranty repair the product will be returned to Buyer transportation prepaid FOB Destination If Fluke determines that the failure was caused by misuse alteration accident or abnormal condition or operation or handling Fluke will provide an estimate or repair costs and obtain authorization before commencing the work Following repair the product will be returned to the Buyer transportation prepaid and the Buyer will be billed for the repair and return transporta tion charges FOB Shipping Point THIS WARRANTY IS BUYER S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER WARRAN TIES EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MER CHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL INDIRECT INCIDENTAL
221. y be read by sending the command again Ifthere are no more errors the response is 0 No error The error queue holds ten errors If the error queue is already full when a new error is generated the last error in the error queue is replaced with the error 350 Queue overflow The error queue may be cleared using the command CLS Possible errors are listed in the following table Error Cause 0 No error The error queue is empty 100 Command error An unrecognized command was received 109 Missing parameter A required parameter was missing 114Header suffix out of range A suffix number was out of range This may occur if a channel does not exist because the scanner is not attached 130 Suffix error A required suffix number is missing 200 Execution error A command could not be executed 203 Command protected A command could not be executed because a setting is password protected 220 Parameter error A command could not be executed because one or more parameters are out of range or invalid 221 Settings conflict A command could not be executed in the current state of the instrument 222 Data out of range A command could not be executed because a parameter was out of range of the wrong type or not recognized 224flllegal parameter value A command could not be executed because a parameter was not an allowed option 230 Data corrupt or stale A r
222. y form is the ID of the probe enclosed in quotation marks If the assigned probe is undefined the response is NONE without quotation marks The channels Calculation setting will automatically be set to resistance if it was temperature when the chan nel s assigned probe is set to NONE INP PROB NEXT Example response A71040 85 1594A 1595A Super Thermometer Interface Commands 8 7 3 59 Reads the ID of the next probe in the Probe Library It also advances the library index used for the next re sponse to the INP PROB NEXT command 1752 If there are no more probes in the Probe Library the response is an empty string INP PROB PAR lt id gt lt name gt lt value gt Example command INP PROB PAR PRT_A46002 TYPE PRT Query form INP PROB PAR lt id gt lt name gt Example query command INP PROB PAR PRT_A46002 TYPE Example query response PRT Password protection Probe Protection Sets the value of a setting in a probe definition Parameter lt id gt is the ID of a probe definition in the Probe Library The ID should be enclosed in double quotation marks If lt id gt does not match the ID of a probe definition in the Probe Library error 224 Ilegal parameter value is generated in the error queue Parameter lt name gt specifies the setting to set Settings and their associated names are listed in the table below also see Section 5 7 2 3 EDIT PROBE F3 on page 36

Fluke 1595A Thermometer User Manual

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