BetaGauge 321 manual.qxd
Contents
1. Symbols Used The following table lists the International Electrical Symbols Some or all of these symbols may be used on the instrument or in this manual Symbol Description N AC Alternating Current 27 AC DC Battery CE Complies with European Union Directives rm DC Double Insulated Electric Shock gt 8 Symbol Description O P P I o a u Fuse PE Ground Hot Surface Burn Hazard Read the User s Manual Important Information Off Canadian Standards Association The following definitions apply to the terms Warning and Caution Warning identifies conditions and actions that may pose hazards to the user Caution identifies conditions and actions that may damage the instrument being used Use the calibrator only as specified in this manual otherwise injury and damage to the calibrator may occur Warning To avoid possible electric shock or personal injury Do not apply more than the rated voltage See specifications for supported ranges Follow all equipment safety procedures Never touch the probe to a voltage source when the test leads are plugged into the current terminals Do not use the calibrator if it is damaged Before you use the calibrator inspect the case Look for cracks or missing plastic Pay particular attention to the insulation surrounding the connectors Select the proper function and range fo2. and the user has to send the LOCAL command to get back to local operation ST_START Starts a switch test ST CLOSE Returns the pressure that the switch closed at in the current pressure units ST_OPEN Returns the pressure that the switch opened at in the current pressure units ST_DEAD Returns deadband of the switch in the current pressure units VAL Returns the value of any measurement taking place on the upper and lower display For example ifthe upper display is measuring 5mA and the lower display is measuring 10V then VAL will return 5 000000E 03 A 1 000000E 01 V ZERO_MEAS Zeroes the attached pressure module Enter the zeroing value in PSI after the command when zeroing an absolute pressure module ZERO_MEAS Returns the zero offset or the reference value for absolute pressure modules 11 Specifications 18 C to 28 lt unless otherwise noted General Instrument Setup Recall 5 last used on power up Environmental Operating Temperature 10 C to 50 C Storage Temperature 20 C to 60 C Power Requirements 6 0 VDC Battery Four 4 standard AA cells Battery Life gt 25 hours typical usage Physical Dimensions 8 3 H x 3 9 W x 1 8 D 21 082 x 9 906 x 4 572 cm Weight 1 Ib 4 oz 0 567 kg Connectors Ports Pressure one 1 8 NPT 2 ports on differential models BetaPort P pressure module Included Accessories Soft case batteries manual NIST traceable certificate and t
3. MORE e Pressure switch under test Figure 10 To perform a switch test follow these steps 1 Change the setup to Setup 4 default switch test Setup 4 The upper display is setto P1 ST all other displays are off Important NOTE The pressure Switch Test can be performed with the following functions P 1 ST or EXT ST 2 Connect the calibrator to the switch using the pressure switch terminals The polarity of the terminals does not matter Then connect the pump to the calibrator and the pressure switch 3 Make sure the vent on the pump is open Zero the calibrator if necessary Close the vent after zeroing the calibrator 4 The top of the display will read CLOSE P1 ST CLOSE psi 0 000 CONFIG LOWER MORE 5 Apply pressure with the pump slowly until the switch opens Important NOTE In the switch test mode the display update rate is increased to help capture changing pressure inputs Even with this enhanced sample rate pressurizing the device under test should be done slowly to ensure accurate readings 6 Once the switch is open OPEN will be displayed bleed the pump slowly until the pressure switch closes 7 Atthe top ofthe display it will now read SW OPENED AT and give you the pressure that the switch opened at 8 Press the NEXT option to view
4. The first option is setting the Port use the select option to scroll through the port choices when finished select the NEXT option 4 LOOP POWER can be toggled on off select NEXT when done 5 Use SELECT to toggle through the UNIT options and select NEXT to move on 6 Use the T and J arrows to set the 100 point of the desired pressure range select DONE SET when finished 19 7 Again use the arrows to set 0 point and select DONE SET when finished and the ERROR mode will be ready to use SET 0 BELOW psi 0 000 DONE SET y Note The 0 and 100 point will be saved in non volatile memory until they are changed again by the user for the internal sensors and external pressure modules When using an external module the 0 and 100 are setto low and full scale ofthe module until the user changes it or if it was previously saved 8 Minimum and Maximum Storage Capability 20 The 300 Series Pressure Calibrators have a min max feature for capturing the minimum and maximum values of any displayed parameter The min max function can be accessed by stepping through the menu options until min max is shown on the display above the F1 key At this time pressing the F1 key will toggle the display through the min max values that are stored in the min max registers These readings are live so that the new min max values will be recorded while in this mode P1 psi P1 psi 0 003 3
5. all commands for the calibrator are sequential any overlapped commands will be indicated as such This section will briefly explain each of the commands and describe their general use which will include any parameters that may be entered with the command as well as what the output of the command is 10 6 1 Common Commands CLS Clears the error queue Also terminates all pending operations When writing programs use before each procedure to avoid buffer overflow IDN Returns the manufacturer model number and firmware revision of the Calibrator For example IDN will return BETA 301 0 1 00 10 6 2 Calibrator Commands DAMP Turns the dampening function on or off For example If you send DAMP ON this will turn the dampening function on DAMP Returns the current state of the dampening function For example Ifyou send DAMP It will return ON if the dampening function is on DISPLAY Turns the indicated display on or off For example If you send DISPLAY LOWER ON this will turn the lower display on DISPLAY Returns the current state of the each of the displays For example If you send DISPLAY It will return ON ON ON ifthe all the displays are on FAULT Returns the error code number of an error that has occurred The command may be entered when the previous command did not do what it was meant to do For example if a value for current output is entered that is bigger than the supported range 0 24mA FAU
6. shows the location of the process measurement inputs while table 1 describes their use BETAGAUGE MODEL 301 1 psi 0 000 25 00 0 000 mA O CONF UPPER MORE COG Side View Figure 1 Process Measurement Inputs Table 1 Process Measurement Inputs No Name Description 1 2 Input Terminals These terminals are used to measure current voltage and a contact closure for switch test 3 P1 Pressure Port This is the connection for the internal sensor P1 4 Serial Interface This is used to interface to optional external modules or optional serial control Figure 2 shows the location ofthe keys Table 2 describes the function of each key 23 BETAGAUGE MODEL 301 1 psi 0 000 25 00 0 000 mA CONF UPPER MORE Figure 2 Keypad Table 2 Key Functions No Name Description 1 Function Keys These keys are used in various ways primarily to config ure the calibrator ON OFF Key This key is used to turn the calibrator on and off ZERO Key This key is used to zero pressure measurements 4 Backlight Key This key is used to turn the backlight on and off 2 1 Calibrator Display The Calibrator Display consists of two regions The menu bar located along the bottom of the screen is used to access a menu system The main display the rest consists of up to three process measurement su
7. when the switch closed and the dead band 15 SW DEADBAND psi 0 405 NEW TEST NEXT DONE 9 Press the NEW TEST option to clear the data and perform another test 10 Press the DONE option to end the test and return to the standard pressure setting Example P1 ST will return to P 1 Important NOTE The previous example uses a normally closed switch The basic procedure is still the same for a normally open switch the display will just read OPEN instead of CLOSE 7 Calibrating Transmitters 16 7 1 Using the mA Input Function The mA input function allows the user to read back the 4 20 mA output from the device being calibrated This can be done in one of two ways 1 Passively Where the device under test directly generates 4 20 mA and can be read by the calibrator 2 Actively Where the calibrator supplies 24 VDC loop power to the device under test to power the device while reading the resulting 4 20 mA signal P1 psi 30 000 mA 100 00 20 000 mA CONFIG LOWER MORE P1 psi 30 000 mA LOOP 100 00 20 000 mA CONFIG LOWER MORE 7 2 Calibrating a Pressure to Current Transmitter To calibrate a pressure to current transmitter P I perform the following steps 1 Connect the calibrator and the pump to the transmitter 2 Apply pressure with the pump 3 Measure the current output of the transmitter 4 Ensure the reading is correct If n
8. 0 000 mA 25 00 mA 25 00 4 000 mA 20 001 mA MIN CLEAR DONE MAX CLEAR DONE To reset the min max registers simply press the clear key These registers are also cleared at power up or when the configuration is changed 9 Factory Setups The Calibrator is loaded with five factory setups These setups are shown below Setup 1 The upper display is setto P1 mode and the middle is set to mA lower is off Setup 2 The upper display is set to EXT mode and the middle is set to mA lower is off Setup 3 The upper display is setto P1 mode and the middle is setto VOLTS mode lower is off 21 P1 psi 0 000 EXT psi 0 000 CONFIG LOWER Setup 4 The upper display is set to P1 the lower display is set to EXT P1 psi 0 000 mA Loop 100 00 20 000 CONFIG LOWER MORE Setup 5 The upper display is setto P1 and the lower display is setto mA Loop 10 Remote Operation 22 10 1 Remote Interface The calibrator can be remotely controlled using a PC terminal or by a computer program running the calibrator in an automated system It uses an RS 232 serial port connection for remote operation NOTE To use the remote control option a custom RS 232 cable must be purchased from Martel LEM232 To contact Martel refer to Section 1 1 of this manual With this connection the user can write programs on a PC with Windows languages like Visual Basic to operate the cal
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10. BETAGAUGE 301 Reference Manual MARTEL LECTRONICS BETAGauge 301 Reference Manual 1 Introd ction eame teh Ee e Yin qeq sta RR eu la 1 1 1 Contacting Martel Beta oooooooccconcn eres 1 1 2 Standard Equipment ate ee Opa 1 1 3 Safety Information see eee eee es SA a a T Y 1 2 Calibrator Interface via ee 3 2 1 Calibrator Display u sss sassa sss as nq salsa qaqas menace 5 2 2 Using the Backlight ooooooocorccrn a a ga aa aaia aa 8 2 3 Using the Zero Function saaa aa aaa aaa a 8 2 4 Other Menu Controlled Functions 8 3 Measuring Pressure 11 3 1 Media Compatibility o oooooooomorrooomoo 11 3 2 Measuring Pressure with External Modules 11 4 Measuring Current sv bugun aq ag asua s gas 12 5 Measuring Voltage Ju sys ua wa 15 6 Performing a Pressure Switch Test 14 7 Calibrating Transmitters 16 7 1 Using the mA InputFunction u sl qapa 16 7 2 Calibrating a Pressure to Current Transmitter 17 7 3 Percent Error FUNCION 26 18 8 Minimum and Maximum Storage Capacity 20 O Factory SOTUPS aerea mute aria 21 10 Remote Operation lesse 22 10 1 Remote Interfa
11. LT Would return 103 which is the code number for an entry over range Refer to the Error Codes table for more information on error code numbers ERROR LOOP Turns loop power on or off in percent error mode For example 29 30 To setloop power on send ERROR_LOOP ON ERROR _LOOP Returns the current state of loop power in percent error mode For example If you send ERROR_LOOP It will return ON if loop power is on in error mode ERROR_ MODE Turns percent error mode on and off For example To turn on percent error mode send ERROR_MODE ON ERROR _ MODE Returns the current state of percent error mode For example If you send ERROR_MODE It will return ON if the calibrator is in percent error mode ERROR_ PORT Sets the pressure port for percent error For example To set the pressure port for percent error to P1 send ERROR PORT P1 ERROR _ PORT Returns the current pressure port for percent error mode For example If you send ERROR _PORT it will return P1 if the pressure port in percent error is P1 FUNC Sets the display indicated in argument one to the function indicated in argument 2 For example To set the lower display to P1 Pressure mode send FUNC LOWER P1 FUNC Returns the current mode of all displays For example if the calibrator is set to P1 ST on the upper display P1 on the middle and the lower display is off FUNC Would return ST P1 P1 NONE HI ERR Sets the 10096 point
12. Power Select Menu ON OFF NEXT DONE Unit Select Menu SELECT NEXT 100 Select Menu DONE SET 4 0 Select Menu DONESET 4 Y Back to Error Main Menu a ERROR NEXT Error Main Menu DONE Min Max MINMAX Main Menu NEXT DONE Max Display Menu MAX CLEAR DONE y Min Display Menu MIN CLEAR DONE y v Contrast CONTRASTI NEXT Main Menu DONE i Contrast Adjust Menu CONTRASTI DONE Y If Config Locked Lock Config Menu LOCK CONFIG NEXT DONE B Main Menu No A Save Recall Menu SAVE RECALL DONE Setup Select Menu RCLSETUP ly Setups Main Menu SETUPS NEXT DONE Back to Main Menu AUTO OFF Auto Off Main Menu NEXT DONE Auto Off Adjust Menu AUTO OFF DONE FIV Display Main Menu DISPLAY NEXT DONE Display Select Menu ON OFF LOWER DONE Back to Main Menu Probe Type Select Menu Figure 4 Menu Map SELECT DONE Damp Main Menu DAMP NEXT DONE m Damp Select Menu ON OFF DONE 2 2 Using the Backlight The backlight is controlled by the dedicated backlight key Ittoggles on and off when the key is pressed this is one of the few functions t
13. b regions These sub regions will henceforth be referred to as the UPPER MIDDLE and LOWER displays Figure 3 shows the location of the different display fields while table 3 describes them P1 pi 3 0 000 S Qo EXT i 0 000 psi CONFIG UPPER 5 Figure 3 Display Table 3 Display Functions No Name Description 1 Primary Parameters Indicates what is being measured 2 Span Indicator Indicates the percent of the 4 to 20 mA span For mA and mA Loop functions only 3 Pressure Units Indicates one of 17 pressure units available for display 4 Units Indicates the unit of measure for the display 2 1 1 Main Menu Functionality There are three options on the Main Menu CONFIG current display and MORE The Main Menu is home for the menu display CONFIG LOWER MORE 2 1 1 1 Setting the Current Display The current display is indicated by the center option on the Main Menu pressing the F2 key will toggle the current display 2 1 1 2 Setting Current Display Parameters To set the parameters of the current display use the CONFIG option to get to the Display Configuration Menu SELECT NEXT DONE Here the SELECT option will toggle through the choices for each parameter The first parameter is MODE Since voltage current and switch test modes all use the same jacks two of these functions cannot be used concurrently The ab
14. ce 22 10 2 Setting up the RS 232 Port for Remote Control 22 10 3 Changing Between Remote and Local Operation 23 10 4 Using Commands sees 23 10 5 Remote Commands and Error Codes 26 10 6 Entering Commands 0 ees 28 11 Specifications leslie 33 A assum ators uh tam eaa Rt a a Wb Re ed a dp q s 34 13 Maintenance isa hk mu qsqa POR RUE as deer a n 34 13 1 Replacing Batteries ee 34 13 2 Cleaning the Unit sa ansa sasa an mh 34 13 3 Service Center Calibration or Repair 34 1 Introduction The Beta 301 is designed to be a simple to use yet very versatile pressure calibrator Its internal pressure sensor combined with inputs for mA voltage and switch contacts allow the 301 to calibrate a variety of pressure devices An external pressure module option allows an even wider range of pressure calibration options including absolute and differential 1 1 Customer Service Corporate Office www martelcorp com e mail sales martelcorp com Tel 603 434 1433 800 821 0023 Fax 603 434 1653 Martel Electronics 3 Corporate Park Drive Derry NH 03038 1 2 Standard Equipment Check to see if your calibrator is complete It should include Beta 301 Calibrator instruction manual test leads carrying case calibration certificate with data 1 3 Safety information
15. cified in the command FUNC Returns the current mode of the upper middle and lower display HI ERR Sets the 10096 of span limit for percent error mode HI ERR Returns the 10096 of span limit for percent error mode LOCAL Returns user to manual operation of the calibrator LOCKOUT Locks out the keypad of the calibrator in remote operation LO ERR Sets the 0 of span limit for percent error mode LO ERR Returns the 096 of span limit for percent error mode PRES UNIT Set the pressure unit for the indicated display PRES UNIT Returns the pressure from the indicated display REMOTE Puts the calibrator in remote mode ST START Starts a switch test ST OPEN Returns pressure value at which the switch opened ST CLOSE Returns pressure value at which the switch closed ST DEAD Returns pressure value of the deadband of the switch 26 VAL Returns the measured values ZERO_MEAS Zeros the pressure module ZERO_MEAS Returns the zero offset of the pressure module Table 7 Parameter units Units Meaning MA milliamps of current V Voltage in volts PSI Pressure in pounds per square inch INH204C Pressure in inches of water at 4 C INH2020C Pressure in inches of water at 20 C CMH204C Pressure in centimeters of water at 4 C CMH2020C Pressure in centimeters of water at 20 C FTH2060F Pressure in feet of water at 60 F BAR Pressure in bars MBAR Pressure in
16. cluding gauge vacuum differential and absolute The modules work seamlessly with the calibrator Simply plug them into the interface and select EXT external sensor Since the interface between the calibrator and the module is digital all the accuracy and display resolution is derived from the module 11 30 000 CONFIG LOWER MORE VALVE Pressure Module C7 Adapter PRESSURE MODULE Figure 6 4 Measuring Current To measure current use the input terminals in the front of the calibrator Select the mA function on one of the displays Current is measured in mA and percentage of range The range on the calibrator is set to 0 at 4 mA and 100 at 20 mA For example If the current measured is displayed as 75 then the mA value is 16 mA mA 75 00 16 000 mA CONFIG LOWER MORE RD Device 41020mA Test 7 Figure 7 12 5 Measuring Voltage To measure voltage use the input terminals in the front of the calibrator Select the Volts function on one of the displays The calibrator can measure up to 30V Device Upto 30V Under Test Figure 8 13 6 Performing a Pressure Switch Test 14 BETAGAUGE MODEL P1 ST CLOSE psi 0 000 CONFIG LOWER
17. e Contrast Main Menu If not it will be called the function menu 2 4 1 Setting the Contrast From the Contrast Main Menu choose the CONTRAST option to access the Contrast Adjustment Menu CONTRAST NEXT DONE Use the arrow keys to adjust the display contrastto the desired level and then use the CONTRAST DONE option to return home CONTRAST DONE 4 y 2 4 2 Locking and Unlocking Configurations Use the LOCK CFG or UNLOCK CFG option of the Configuration Lock Menu to lock or unlock the display configuration LOCK CFG NEXT DONE When the LOCK CFG option is chosen the menu display returns home and the CONFIG option on the Main Menu indicates that it is locked Also all menus are locked out with the exception of the Contrast Adjustment menus and the Configuration Lock Menu When the UNLOCK CFG option is chosen the configuration is unlocked and the menu display continues to the next sub main menu 2 4 3 Saving and Recalling Setups The calibrator will automatically save the current set up for recall at power up Additionally 5 set ups can be accessed through the SETUPS menu Selectthe SETUPS option from the Setups Main Menu SETUPS NEXT DONE Choose SAVE to save a set up RECALL to recall the set up or DONE to do nothing and return home SAVE RECALL DONE If SAVE or RECALL is selected use the arrow keys to select the set up location Then use the save option to store the current
18. est leads Ranges Available Pressure 1 psi 5 psi 30 psi 100 psi 300 psi mA 0 to 24 000 mA Volts 0 to 30 000 VDC Engineering Units psi bar mbar kPa kgcm2 cmH20 Q 4 C cmH20 20 mmH20 Q 4 C mmH20 20 C inH20 4 C inH20 9 20 C inH20 Q 60 mmHgO 0 C inHg 0 C ftH20 4C ftH20 Q 20 C ftH20 60 Accuracy Pressure 5 30 100 300 psi X 0 0596 F S 1 psi 0 07596 F S mA 0 01596 of rdg 0 002mA Volts 0 01596 of reading 0 002V Temperature Effect No effect on accuracy on all functions from 18 C to 28 C Add 0 005 F S C for temps outside of 18 C to 28 C 33 12 Warranty Martel Electronics Corporation warrants all products against material defects and workmanship for a period of twelve 12 months after the date of shipment Problems or defects that arise from misuse or abuse of the instrument are not covered If any product is to be returned a Return Material Authorization number must be obtained from our Customer Service Department This number must be indicated on the return package as notice to our Receiving Department to accept the shipment Any package not so marked will not be accepted and will be returned to the shipper Martel will not be responsible for damage as a result of poor return packaging Out of warranty repairs and recalibration will be subject to specific charges Under no circumstances will Martel Electronics be liable for any d
19. evice or circumstance beyond the value of the product 13 Maintenance 13 1 Replacing Batteries Replace batteries as soon as the battery indicator turns on to avoid false measurements Ifthe batteries discharge too deeply the BETA 301 will automatically shut down to avoid battery leakage Note Use only AA size alkaline batteries or optional rechargeable battery pack 13 2 Cleaning the Unit 34 Warning To avoid personal injury or damage to the calibrator use only the specified replacement parts and do not allow water into the case Caution To avoid damaging the plastic lens and case do not use solvents or abrasive cleansers Clean the calibrator with a soft cloth dampened with water or water and mild soap 13 3 Service Center Calibration or Repair Only qualified service personnel should perform calibration repairs or servicing not covered in this manual Ifthe calibrator fails check the batteries first and replace them if needed Verify that the calibrator is being operated as explained in this manual If the calibrator is faulty call for an RMA number or go to www martelcorp com to download an RMA form to return the unit Be sure to pack the calibrator securely using the original shipping container if it is available MARTEL LECTRONICS CALIBRATORS www martelcorp com e mail sales martelcorp com Tel 603 434 1433 800 821 0023 Fax 603 434 1653 Martel Electronics 3 Corporate Park Drive Derry NH 030
20. for the percent error mode calculation in the current engineering units For example To set the 10096 pointto 100 psi send HI ERR 100 HI ERR Returns the 10096 point for the percent error mode calculation For example If the 100 point is set to 100 psi ERR would return 1 000000 02 PSI LOCAL Restores the calibrator to local operation if it was in remote mode Also clears LOCKOUT if the calibrator was in lockout mode LOCKOUT Sending this command sets the lockout state when the unit is in REMOTE or goes to remote it prohibits use of the keypad completely The lockout state can only be cleared by sending the LOCAL command LO ERR Sets the 096 point for the percent error mode calculation in the current engineering units For example To set the 096 point to 20 psi send LO ERR 20 LO ERR Returns the 096 point for the percent error mode calculation For example If the 0 point is setto 20 psi LO ERR would return 2 000000E 01 PSI PRES UNIT Used to set the pressure unit for the indicated display For example To set the pressure unit to psi on the lower display send PRES UNIT LOWER PSI 3l 32 PRES_UNIT Returns the pressure unit used when measuring pressure for each of the 3 displays REMOTE Puts the calibrator in remote mode From the remote mode the user can still use the keypad to get back to local unless the command LOCKOUT was entered before REMOTE Than the keypad is totally locked out
21. hat cannot be controlled by the serial interface 2 3 Using the Zero Function When the ZERO_KEY is pressed the calibrator will zero the current display if a pressure mode is selected and the pressure is within the zero limit 2 3 1 Internal Sensor and Pressure Module non absolute When a sensor or module is selected on the current display and the ZERO_KEY is pressed the calibrator subtracts the current reading from the output 2 3 2 Absolute Pressure Module When an absolute pressure module is selected on the current display and the ZERO_KEY is pressed the calibrator prompts the user to enter the barometric reference pressure This is done using the arrow keys F2 and F3 Keys PRESSURE REFERENCE 14 469 SETREFDONE 2 4 Other Menu Controlled Functions There are eight sub main menus that can be accessed through the MORE option of the Main Menu A sub main menu contains three options The first option is unique to the function The second and third options of a sub main menu are always the same The NEXT option leads to the next sub main menu and the DONE option returns home For the last sub main menu the NEXT option wraps around to home See Figure 4 fora detailed mapping of the menu structure A note on naming convention If a sub main menu has subordinate menus it will henceforth be referred to as function Main Menu E g the display contrast sub main menu will be called th
22. he current modes of the calibrator displays Compound Commands Commands that contain more than one command on one line For example PRES_UNIT LOWER PSI PRES_UNIT Sets the pressure units to PSI and queries it to verify It will return PSI PSI PSI 10 4 2 Character Processing The data entered into the calibrator is processed as follows ASCII characters are discarded if their decimal equivalent is less than 32 space except 10 LF and 13 CR Data is taken as 7 bit ASCII The most significant data bit is ignored Upper or lower case is acceptable 10 4 3 Response Data Types The data returned by the calibrator can be divided into four types Integer For most computers and controllers they are decimal numbers ranging from 32768 to 32768 For example FAULT could return 110 Refer to the Error Codes table Table 8 for more information on error codes Floating Floating numbers have up to 15 significant figures and exponents For example ZERO_MEAS returns 1 210000E 2 PSI Character Response Data CRD Data returned as keywords For example PRES_UNIT returns PSI NONE NONE Indefinite ASCII IAD Any ASCII characters followed by a terminator For example IDN returns BETA 301 250 1 00 10 4 4 Calibrator Status Error Queue If an error occurs due to invalid input or buffer overflow its error code is sent to the error queue The error code can be read from the queue with the command FAULT The err
23. ibrator or use a Windows terminal such as Hyper Terminal to enter single commands Typical RS 232 remote configurations are shown in Figure 13 COM PORT BETAGAUGE NODEL301 AH X SEEE E N GR al EE p Figure 13 Calibrator to Computer Connection 10 2 Setting up the RS 232 Port for Remote Control Note The RS 232 connection cable should not exceed 15m unless the load capacitance measured at connection points is less than 2500pF Serial parameter values 9600 baud 8 data bits 1 stop bit no parity Xon Xoff EOL End of Line character or CR Carriage Return or both To set up remote operation of the calibrator on the Windows Hyper Terminal connected to a COM porton the PC as in Figure 23 use the following procedure 1 ew Start Hyper Terminal located in Accessories Communications of the Windows Start menu Select New Connection For Name enter Beta 301 Select the serial port that the calibrator is connected to Enter the above information for port settings Select ASCII setup from File Properties Settings and mark these choices Echo typed characters locally Wrap lines that exceed terminal width Select Ok To see if the port works enter IDN This command will return information on the calibrator 23 10 3 Changing Between Remote and Local Operation There are three modes of operation of the calibrator Local Remote and Remote with Lockout L
24. ility to select certain functions is limited based on whatis already selected in another active display The NEXT option is used to change to the second parameter Only Pressure modes have a second parameter Pressures can be read in 13 engineering units With a single display the following modes are available P 1 Pressure on left side sensor EXT Pressure with external pressure module P 1 ST Switch Test with left side sensor EXT ST Switch Test with external pressure module mA Milliamps measure without loop power mA LOOP Milliamps measure with loop power VOLTS Voltage Measure The following table shows which functions are available concurrently An X in a column indicates that the mode in the current display will not be available for selection if the mode in that row is in use in any other active display Table 4 Mode Concurrency OTHER DISPLAYS CURRENT DISPLAY P 1 EXT 1 EXT mA mA Volts ST ST Loop P 1 EXT P 1 ST X X X X X EXT ST X X X X X mA X X X X mA Loop X X X X Volts X X X X 2 1 1 3 Accessing Other Menus Use the MORE option on the Main Menu to access the other menu functions Main Menu CONFIG DISPLAY MORE Parameter Selection SELECT NEXT DONE Error Main Menu CONFIG EXIT i Pressure Port Select Menu DONE SELECT NEXT Loop
25. ions of the other currently active displays if the configurations are in conflict the recalled display s configuration is modified to avoid the conflict Ifall three displays are deactivated the LOWER display will come on automatically 3 Measuring Pressure To measure pressure connect the calibrator using an appropriate fitting Choose pressure setting for the display being used The calibrator is equipped with one internal sensor and many optional external Pressure Modules are available Be sure to choose the sensor based on working pressures and accuracy CONFIG LOWER VALVE 0 Figure 5 Use the ZERO key to zero the pressure sensor when vented to atmospheric pressure Important NOTE To ensure accuracy of the calibrator it is critical to zero the calibrator before a device is calibrated 3 1 Media Compatibility The calibrator utilizes a media isolated sensor to prevent sensor contamination Whenever possible clean dry air is the media of choice If that is not always possible make sure that the media is compatible with Nickel Plated Brass Silicon RTV glass and ceramic materials 3 2 Measuring Pressure with External Modules The calibrator provides a digital interface to External Pressure Modules These modules are available in various ranges and types in
26. millibars KPAL Pressure in kiloPascals INHG Pressure in inches of mercury at 0 C MMHG Pressure in millimeters of mercury at 0 C KG CM2 Pressure in kilograms per square centimeter ON Turn something on OFF Turn something off UPPER Upper Display MIDDLE Middle Display LOWER Lower Display DCI Current measure function DCI_LOOP Current measure function with loop power DCV Voltage measure function P1 Port P1 pressure measure function P1 ST Switch Test with port P1 pressure measure function 27 Table 8 Error Codes Error Number Error Description 100 A non numeric entry was received where it should be a numeric entry 101 Too many digits entered 102 Invalid units or parameter value received 103 Entry is above the upper limit of the allowable range 104 Entry is below the lower limit of the allowable range 105 A required command parameter was missing 106 An invalid command parameter was received 107 Pressure not selected 108 Invalid sensor type 109 Pressure module not connected 110 An unknown command was received 111 Bad Parameter received 112 The serial input buffer overflowed 113 Too many entries in the command line 114 The serial output buffer overflowed 10 6 Entering Commands 28 Commands for the calibrator may be entered in upper or lower case There is at least one space required between the command and parameter all other spaces are optional Almost
27. ocal mode is the default mode Commands may be entered using the keypad on the calibrator or using a computer In Remote mode the keypad is disabled and commands may only be entered using a computer but choosing GO TO LOCAL from the menu on the calibrator display will restore keypad operation In Remote with Lockout the keypad can not be used atall To switch modes proceed as follows 1 To enable Remote mode type in the serial command REMOTE at the computer terminal 2 To enable Remote with Lockout type in REMOTE LOCKOUT in either order 3 To switch back to local operation enter LOCAL at the terminal This command also turns off LOCKOUT ifitwas on For more information on commands refer to the Remote Commands section 10 4 Using Commands 10 4 1 Command types Refer to the Section 10 5 on Remote Commands for all available commands The calibrator may be controlled using commands and queries All commands may be entered using upper or lower case The commands are divided into the following categories Calibrator Commands Only the calibrator uses these commands For example VAL asks for the values displayed on the calibrator display Common Commands Standard commands used by most devices These commands always begin with an For example IDN tells the calibrator to return its identification Query Commands Commands that ask for information they always end with a For example FUNC Returns t
28. or queue holds 15 error codes When it is empty FAULT returns 0 The error queue is cleared when power is reset or when the clear command CLS is entered Input Buffer Calibrator stores all received data in the input buffer The buffer holds 250 characters The characters are processed on a first in first out basis 25 10 5 Remote Commands and Error Codes The following tables list all commands and their descriptions that are accepted by the calibrator Table 5 Common Commands Command Description CES Clear status Clears the error queue IDN Identification query Returns the manufacturer model number and firmware revision level of the Calibrator RST Resets the calibrator to the power up state Table 6 Calibrator Commands Command Description DAMP Turns Damp on or off DAMP Returns if DAMP is on off DISPLAY Turns on off the displays specified in the command DISPLAY Returns which displays are on off FAULT Returns the most recent error code ERROR LOOP Turns loop power on or off in percent error mode ERROR LOOP Returns the current state of loop power in error mode ERROR MODE Turns percent error mode on or off ERROR MODE Returns whether percent error mode is on or off ERROR PORT Set the pressure port for percent error mode ERROR PORT Returns the pressure port for percent error mode FUNC Sets the display mode as spe
29. ot adjust the transmitter as necessary P1 psi 30 000 mA 100 00 20 000 mA CONFIG LOWER MORE Figure 11 17 7 3 Percent Error Function 18 The calibrator features a unique function which can calculate pressure vs milliamp error as a percentage of the 4 to 20 mA loop span The percent error mode uses all 3 screens and has a unique menu structure It simultaneously displays pressure mA and percent error Figure 12 Example Suppose a pressure transmitter under test is 30 psi 2 Bar Full Scale and outputs a corresponding 4 to 20 mA signal The user can program in a 0 to 30 psi pressure span into the calibrator and the calibrator will calculate and display the deviation or Error from the expected 4 to 20 mA output This eliminates the need for manual calculations and also helps if it becomes difficult to set an exact pressure with an external pump To use the ERROR function proceed as follows 1 With the calibrator turned on and operating press the F3 key to activate the MORE menu option Now press the F1 key to activate the ERROR option 2 Press the F1 key to select the CONFIG option 3
30. r your measurement Make sure the battery cover is closed and latched before you operate the calibrator Remove test leads from the calibrator before you open the battery door Inspect the test leads for damaged insulation or exposed metal Check test leads continuity Replace damaged test leads before you use the calibrator When using the probes keep your fingers away from the probe contacts Keep your fingers behind the finger guards on the probes Connect the common test lead before you connect the live test lead When you disconnect test leads disconnect the live test lead first Do not use the calibrator if it operates abnormally Protection may be impaired When in doubt have the calibrator serviced Do notoperate the calibrator around explosive gas vapor or dust When measuring pressure make sure the process pressure line is shut off and depressurized before you connect it or disconnect it from the pressure module Disconnecttest leads before changing to another measure or source function When servicing the calibrator use only specified replacement parts To avoid false readings which could lead to possible electric shock or personal injury replace the battery as soon as the battery indicator appears A Caution To avoid possible damage to calibrator or to equipment under test Use the proper jacks function and range for your measurement or sourcing application 2 Calibrator Interface Figure 1
31. setup into the selected location or the recall option to recall the set up stored in the selected location The display menu will automatically go home SAVE SETUP 1 y RCLSETUP1 4 2 4 4 Setting AutoShut off Parameters The calibrator can be set to automatically shut off after a selected number of minutes this function can also be disabled To set the auto shut off parameters select the AUTO OFF option on the Auto Shut Off Main Menu AUTO OFF NEXT DONE 10 Use the arrow keys to select the number of minutes before the calibrator turns off or disable auto shut off by scrolling all the way down AUTO SHUTDOWN ON AUTO OFF DONE y Use the AUTO OFF DONE option to set the parameters and return home The auto shut off time 15 reset whenever a key is pressed 2 4 5 Activating and Deactivating a Display Use the DISPLAY option on the Display Selection Main Menu to access the Display Activation Menu DISPLAY NEXT DONE The function option can be used to select which display to act upon The ON OFF option turns the selected display on or off The selected display and current on off state are displayed in the lower display MIDDLE ON ON OFF MIDDLE DONE Use the DONE option to save the changes and return home When a display is deactivated its configuration is retained When the display is activated its configuration is checked against the configurat
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