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Model 12 / 14 Temperature Monitor User`s Manual

1. 4 Cryo con s CalGen function is implemented This function allows the user to fit an existing sensor calibration curve to one two or three user specified points The result is a high accuracy sensor calibration at low cost Configuration of any of the instrument s remote interfaces Flexible Help interface that documents all instrument remote commands with a cut and paste type interface 7 Interactive Mode provides interactive communication with the instrument over any of the remote interfaces 8 Instrument calibration using a simple step by step menu driven process Installing the Utility Software From a CD the utility software package does not require installation It can be executed from the CD directly by running the UTILITY EXE program When the software is downloaded off of the Internet it is in a self extracting ZIP format and must first be un zipped onto hard disk 45 Cryo con Model 12 14 Temperature Monitor Cryo con Utility Software Connecting to an Instrument The desired remote interface connection may be selected by clicking Comm gt Port Select from the main menu 73 Cryo con Utility Software dloader l Comm Operations Data Logging View Help User Options Port Select Dialog xi Select the portto communicate with controller Click GPIB to change GPIB address C RS232 C USB C GPIB LAN Cancel Select the desired communications port and then click OK
2. 40 Cryo con Model 12 14 Temperature Monitor The Model 12 14 Web Site This page is used to set the network parameters for the Model 12 14 These parameters are modified by entering new data and clicking on the Submit button Note that if you change settings on this page the Model 12 14 will reset to the new configuration and disconnect from your web browser You will need to enter a new address in the browser to re connect Configuring the Network Connection The Network Name is optional and is used as a convenience to identify a specific instrument The factory default is CCM14 the last four digits of the unit s serial number The IP address and subnet mask default to 192 168 0 4 and 255 255 255 0 These should be changed so that the unit is on the same IP segment as the user s network This means that the first three fields of the IP should match the user s network and the last field should be unique to the unit Configuring E mail E mail is configured from this page First a SMTP mail server address must be entered For example smtp mymailhost com Next is a from and a to E mail address Note that the from address must be valid on the specified mail server The Mail Port is usually port 25 Finally select the channels that you want to receive E mail for Mail will be sent whenever an enabled channel asserts an alarm condition Alarm conditions are setup on the Input Channel Configu
3. Internal Data Logging The Model 12 14 has an internal data logging capability that uses non volatile memory Logging of input channel temperature data is performed to a circular buffer that contains up to 1 000 samples Each sample contains all eight temperature readings plus a time stamp from a real time clock The data logging buffer may be read by using the Cryo con Utility software package This will save the logging buffer as a text file CSV that can be opened by spreadsheet and text editor programs Data Logging Setup The best way to setup data logging is by using the embedded web server However it can also be performed from the front panel The first step is to ensure that the instrument s real time clock is set to the current time This can be done by opening the embedded web page The current time is shown on the bottom of the Status Page and the clock may be set by going to the System page From the front panel the current time can be viewed and updated by going to the Time Date Setup menu Data logging can be configured and enabled from the embedded web server s System page The Logging Enable field turns logging on and off and the Interval field sets the logging sample rate The Current Count field shows how many samples have been accumulated From the front panel data logging may be configured by going to the System Setup menu and scrolling down to the Data Log Enable and Interval fields Once enabled data logging wil
4. The Model 12 14 Web SS coa aio 39 Tec OUI A O 39 The Network Configuration Page sssuisirra rr rr 40 The Input Channel Configuration Page cociionomnninnirnranmannacinnnacananacas 42 The Output Channel Configuration Page cc cccccceeseeseeeeeeeeeeeeeeeeees 43 System Configuration Page icon ii 44 Cryo con Ll SOMETE conri 45 installing the Utility SOTW aE receives rr ri dana 45 Comecting to an Instruir ri 46 Using the Interactive Torinal cocos ta seeds atacada 47 Downloading or Uploading a Sensor Calibration Curve 48 Using the Real Time Strip Chad coosiiccncurmitarrnios erarrra rca tancaccccans 51 Data Logs 52 Remote WO command HELP cuina iaa 54 CalGen Calibration Curve GeneratOF oocconnccocccncccnnccccnnncnnnannnnnnnnnnnnn 55 The Vapor Pressure Calculator ccc cscsvesdidcanesevaveurduaoncenindensancenenacsanansias 58 Cryo con Model 12 14 Temperature Monitor Table of Contents PP A EE 59 Cryo con Calibration SERVICES vusiscons rica taa 59 Calibration IMA dlrs 59 Minimum Required EquipMent coccccccccccccccnnnnnnnnnnnnnnnnnnnnnnnnnnannnncns 59 The Basic Calibration SEQUENCE vos 60 Calibration of Silicon DiOdeS censos pora cba 64 Calibration of DE TesiStorS nasa 64 Calibration Of AG resistors sisian avena rar 64 Remate e117 1119 a 65 Remote Interface Configura rc rr RR denon 65 Remote Programming QUITO sii cncsiecesusacneasevesioinusnereniaacneaerentoienuseccaannaane 68
5. 14 Temperature Monitor The Model 12 14 Web Site The Output Channel Configuration Page Output channels on the Model 12 14 include two dry contact relays and an analog output These may be completely configured using this web page 3 Cryo Con Model 14 Temperature Monitor Microsoft Internet Explorer Cryo con Model 14 Cryogenic Temperature Monitor Relay 1 Source High Setpoint 200 000 Enable Low Setpoint 100 000 Enable Source ChB High Setpoint 300 000 Enable No Low Setpoint 50 0000 Enable No y Analog Output Source ChA Enable Ves Gain 0 50000 Offset 300 000 Figure 10 Output Channel Web Page 43 Cryo con Model 12 14 Temperature Monitor The Model 12 14 Web Site System Configuration Page From the System Configuration page temperature displays and data logging is configured 3 Cryo Con Model 14 Temperature Monitor Microsoft Internet Explorer File Edit View Favorites Tools Help Back gt D A Asearch Gyravorites meda 4 B G SI E Address http 192 168 0 4 SysSetup htm Cryo con Model 14 Cryogenic Temperature Monitor Resolution Full y Time Constant 2 Sec Update Cancel Data Logging Logging Enable Off Interval 5 Sec Current Count 0 Samples Update Cancel Date Time Date 11 6 2005 dd mm yyyy Time 14 42 29 hhimmiss Update Cancel tf ne Figure 11 System Configurat
6. 400 148 640 0 383 500 185 668 0 378 600 221 535 0 372 700 256 243 0 366 800 289 789 0 360 900 324 302 0 318 1123 390 47 0 293 Rhodium iron Rhodium lron sensors feature high stability low magnetic field dependence and reasonable interchangeability The Model 12 14 supports them with 1 0mA constant current DC excitation T K Ohms QIK 14 1 5204 0 178 4 2 1 9577 0 135 10 2 5634 0 081 20 3 1632 0 046 30 3 5786 0 040 50 4 5902 0 064 77 4 6 8341 0 096 100 9 1375 0 106 150 14 463 0 105 200 19 641 0 102 250 24 686 0 101 300 29 697 0 101 350 34 731 0 101 400 39 824 0 103 101 Cryo con Model 12 14 Temperature Monitor Appendix E Sensor Data Tables Cernox Cernox temperature sensors do not follow a gue ESS Ans Ui standard calibration curve Data shown here is for T K Ohms Qik typical sensors 0 3 31312 357490 0 4 13507 89651 The Model 12 14 supports Cernox using a 10mV 05 7855 7 ETSE or 1 0mV Constant Voltage AC excitation that 1 23551 32052 extends low temperature operation to about i4 J540 A 400mK Below that sensor self heating errors may a T 00 26 occur 3 740 78 199 11 Shaded entries are outside of th
7. LAN RJ 45 PiNdQUt oooocconooccccccccononnncncccnnnnnncnnncnnnnnnncnnnncnnnn nn cnnnnnn 15 Figure 3 RS 232 Null Modem Cable oooooccccconococccccccoccoconcccnccnnnnanccanccnnnnnnn 16 Figure 4 Model 12 14 Rear Panel Layout 17 Figure 5 Voltage Selection JUMPEIS ooooococcccccnncccocccccnonanannnnnccnnnnarnnnnnnnnnnn 18 Figure 6 Model 12 14 Front Panel 21 Figure 7 Model 12 14 Web Site Status Page 39 Figure 8 Network Configuration Page oooooocccnnnnnccccccnccccnonancconcconannnnannnas 40 Figure 9 Input Channel Setup Web PagQe ooonoooccccccccncccccccccnanananccnncncnnnnnnn 42 Figure 10 Output Channel Web PaQl ooooooccccccnicccccccccnccnnconnncnnccnnnnn nc nana 43 Figure 11 System Configuration Page coocconnccccccnnconoccocnconcnanananncanccnnnnnnno 44 Figure 12 Instrument Calibration Screen rererere 60 Cryo con Model 12 14 Temperature Monitor Preparing the Monitor for Use Preparing the Monitor for Use Model Identification The model number is identified on the front and rear panel of the instrument as well as in various instrument displays Model escription O Model 12 110 Cryogenic temperature monitor with two standard multi function sensor input channels set for AC power line voltages from 100 to 120VAC Model 12 220 Cryogenic temperature monitor with two standard multi function sensor input channels set for AC power line voltages from 200 to 220VAC Model 14 110 Cryogenic temperature
8. Sensor Curve Download PID Table Download Interact CalGen Data Logging Upload Data Log Connect Comm Type LAN LAN Not Connected O No Device Ver Click on the Connect button of the shortcut menu bar or on Comm gt Connect from the main menu to connect to the instrument After a short delay the connect LED should light and the instrument type will be displayed Also most of the grayed out fields on the menu bars should activate 46 Cryo con Model 12 14 Temperature Monitor Cryo con Utility Software Using the Interactive Terminal The Utility Software s Interactive Terminal mode allows the user to send commands to the instrument and view the response Terminal mode is selected by selecting Comm gt Interact from the main menu or Interact from the shortcut bar This will result in the display shown below To interact with the instrument type a remote command into the dialog box and click Send The command will be transmitted to the instrument and a response if any will be displayed on the background window To exit terminal mode click the Quit button on the dialog box Cryo con Utility Software dloader File Comm Firmware Calibration Table PID Table view DataLogging Help Serial Terminal Enter Command Send IDN 47 Cryo con Model 12 14 Temperature Monitor Cryo con Utility Software Downloading or Uploading a Sensor Calibration Curve Sensor calibration curves may b
9. press the Enter key To abort the selection process without making any change press the amp key Indicates that the selection is a numeric entry field Pressing the or 4 keys will increment or decrement the displayed number To enter the displayed value press the Enter key To abort entry without making any changes press the dk key 1 From Home screen enter setup menu 2 Within a setup menu Enter data or select a field cursor display will indicate function 1 Scroll Display UP 2 When in a field selection mode abort entry and return to scroll mode cursor display will indicate function Scroll Display DOWN Scroll to NEXT selection 1 In data selection mode scroll to PREVIOUS selection 2 Within a setup menu return up the menu tree to the previous level cursor display will indicate function Table 14 Function Key Descriptions LED indicators There are three LED indicators on the right hand side of the instrument They indicate the following Alarm Red An enabled alarm condition is asserted Relay 1 Green Relay 1 is energized Relay 2 Green Relay 2 is energized 22 Cryo con Model 12 14 Temperature Monitor The User Interface Restoring Factory Defaults Factory default settings may be restored with the following simple procedure 1 Turn AC power OFF 2 Press and hold the Enter key while turning AC power back ON Keep the key pressed until you see the power up disp
10. 2 years Whatever calibration interval you select Cryo con recommends that complete re adjustment should always be performed at the calibration interval This will increase your confidence that the instrument will remain within specification for the next calibration interval This criterion for re adjustment provides the best measure of the instrument s long term stability Performance data measured using this method can easily be used to extend future calibration intervals Minimum Required Equipment All calibrations require a computer with an RS 232 or LAN connection to the instrument Additionally reference standards are required for each input range as follows e The Silicon Diode input range Calibration Type 110UA and V10UA requires voltage references of 0 5 and 1 5 Volts DC and a resistance standard of 100KO e The Constant Voltage AC resistance ranges Type AC10UA AC100UA and AC10UA require the use of 100KQ 10KQ 1KQ 100Cand 10 resistances e The 100 Platinum range Type R1MA requires a 100Qand a 10Cresistor e The 1000Crange Type R100UA requires 1KQand 100Cresistors e The 10 000Qange Type R10UA requires 10KQand 1KCresistors The test equipment recommended for complete calibration is a Fluke 5700A DMM calibrator 59 Cryo con Model 12 14 Temperature Monitor Instrument Calibration The Basic Calibration Sequence You must first connect the Model 12 14 to a computer via the RS 232 Serial or LAN interface and then
11. Configuration ta Remote 1 0 Data Types Instrument Status Register ISA Instrument Status Enable Register ISE The Standard Event Register ESRI The Standard Event Enable Register ESE The Status Byte STB The Status Enable Register SRE Name Strings Curve Multiplier Curve Units Sensor Types Input Channel Designators emote Command Reference 2 2 e D 54 Cryo con Model 12 14 Temperature Monitor Cryo con Utility Software CalGen Calibration Curve Generator The CalGen feature is used to generate new calibration curves for Silicon Diode or resistor sensors This provides a method for obtaining higher accuracy temperature measurements without expensive sensor calibrations Most Cryo con temperature instruments support CalGen directly on the instrument However the utility software package implements the same algorithm and can be used with virtually any instrument capable of measuring temperature New Curves can be generated from any user selected sensor calibration curve and are written to a specified file For Diode sensors the user may specify one two or three data points CalGen will generate the new curve based on fitting the input curve to the user specified points Platinum or other resistor calibration curves require one or two data points The generated curve will be a best fit of the input curve to the two specified input points Since fits a sensor calibration curve to
12. DC constant current excitation Sensor type ACR indicates an AC resistor sensor that uses constant voltage bias Here the Bias Voltage field will show selections of 1 0V 10 0mV and 1 0mV to indicate the voltage that is held on the sensor The Model 12 14 has an autoranging current source that will maintain the selected voltage For sensor types other than ACR the Bias Voltage field will show N A for not applicable Additional information on excitation voltages and currents is given in the section Input Channels Setting a Temperature Alarm The Alarm lines are used to setup alarm conditions The Model 12 14 allows alarm conditions to be assigned independently to any of the input channels High temperature low temperature and sensor fault alarms may be entered and enabled or disabled Note that there is a 0 25K hysteresis in the assertion of high and low temperature alarms Alarm conditions are indicated on the front panel by the Alarm LED and if enabled They are also reported via the remote interfaces Pressing the 4 key will return to the Root Menu 26 Cryo con Model 12 14 Temperature Monitor The User Interface The Analog Output Menu The Model 12 14 s analog output is programmed from this menu It is selected from the Root Menu Analog Output Menu Select the controlling input source e joffset 300 0004 4 Gain 0 50000 ain unitiess Table 18 Analog Output Setup Menu Setting the Analog O
13. Functions Color codes for the Dual Sensor Cable Cryo con part number 4034 038 are as follows a oe sem ow cha white cmene a cha Green onno o cha Rea sorset 4 ens white TOA ene es Senseis 1 Table 10 Dual Sensor Cable Color Codes The cable used is Belden 8723 This is a dual twisted pair cable with individual shields and a drain wire The shields and drain wire are connected to the DB9 connector s metal backshell in order to complete the shielding connection Four wire connections to the sensor are shown here for Diode and Resistor sensors V V Four Wire Four Wire Diode Sensor Resistor Z Sensor N Thermal EMF and AC Bias Issues DC offsets can build up in cryogenic temperature measurement systems due to thermocouple effects within the sensor wiring Careful wiring can minimize these effects However in a few systems measurement errors induced by thermal EMFs can result in unacceptable measurement errors These cases will require the use of an AC bias or chopped sensor excitation in order to remove DC offsets Sensor Wiring Diode and Platinum RTD type sensors use a DC measurement scheme Therefore the only effective method of minimizing thermocouple DC offsets is to wire temperature sensors so that connections between dissimilar metals are grouped together For example the connection between sensor leads and cryostat wiring should be kept close to
14. K Volts 1 4 1 63864 36 56 4 2 1 53960 33 91 10 1 36317 26 04 20 1 17370 11 34 30 1 10343 3 12 50 1 07399 1 46 77 35 1 02511 1 69 100 0 98740 1 85 150 0 89011 2 03 200 0 78272 2 17 250 0 67085 2 28 300 0 55665 2 36 355 0 42759 2 33 400 0 32161 2 38 450 0 20231 2 37 500 0 09077 2 12 T K Volts mV K 1 4 1 71488 10 54 4 2 1 64660 32 13 10 1 39562 35 28 20 1 17592 20 43 30 1 10136 1 75 50 1 06957 1 59 77 35 1 14905 1 72 100 0 98322 1 82 150 0 88603 2 00 200 0 78059 2 14 250 0 67023 2 23 300 0 55672 2 28 350 0 44105 2 32 400 0 32319 2 36 450 0 20429 2 38 99 Cryo con Model 12 14 Temperature Monitor Appendix E Sensor Data Tables mV K T K Volts 1 4 1 64429 12 49 4 2 1 57848 31 59 10 1 38373 26 84 20 1 19775 15 63 30 1 10624 1 96 50 1 07310 1 61 77 35 1 02759 1 73 100 0 98697 1 85 150 0 88911 2 05 200 0 78372 2 16 250 0 67346 2 24 300 0 55964 2 30 350 0 44337 2 34 400 0 32584 2 36 450 0 20676 2 39 500 0 09068 2 12 mV K Volts 1 4 1 6981 13 1 4 2 1 6260 33 6 10 1 4201 28 7 20 1 2144 17 6 30 1 1070 2 34 50 1 0705 1 75 77 35 1 0203 1 92 100 0 9755 2 04 150 0 8687 2 19 200 0 7555 2 31 250 0 6384 2 37 300 0 5189 2 4 350 0 3978 2 44 400 0 2746 2 49 450 0 1499 2 46 475 0 0906 2 22 GaAl
15. Kelvin C Celsius F Fahrenheit and S native sensor units Volts or Ohms Set the temperature units on input channel A to Kelvin input a units k Read the temperature units on Return is K C F or S gt ee channel B input b units Table 22 Commonly Used Remote Commands 71 Cryo con Model 12 14 Temperature Monitor Remote Programming Guide SCPI Status Registers The Instrument Status Register The Instrument Status Register ISR is queried using the SYSTEM ISR command The ISR is commonly used to generate a service request when various status conditions occur In this case the ISR is masked with the Instrument Status Enable ISE register The ISR is defined as follows ISR Bit Bite Bits Bit4 Bits Bitz Bitt Bito Aam SFB sra Where Bit7 Alarm Indicates that an alarm condition is asserted Use the ALARM commands to query individual alarms Bit1 to Bit0 SFx Indicates that a sensor fault condition is asserted on an input channel Use the INPUT commands to query the input channels The Instrument Status Enable Register The Instrument Status Enable ISE Register is a mask register It is logically anded with the contents of the ISR in order to set the Instrument Event IE bit in the Status Byte STB register This can cause a service request to occur Bits in the ISE correspond to the bits in the ISR defined above The Standard Event Re
16. also be obtained by contacting Cryo con as follows Cryogenic Control Systems Inc PO Box 7012 Rancho Santa Fe CA 92067 Telephone 858 756 3900 FAX 858 759 3515 e mail techsupport cryocon com For updates to LabVIEW drivers Cryo con utility software and product documentation go to our web site and select the Download area Current Firmware Revision Level As of January 2008 the current firmware revision level for the Model 12 14 series is 2 20C Revision 2 18 was a critical revision Please update any equipment with earlier revisions Revision 2 20 added a screen saver function Current Hardware Revision Level As of January 2008 the current hardware revision level for the Model 12 14 series is C Hardware cannot be upgraded in the field Returning Equipment If an instrument must be returned to Cryo con for repair or recalibration a Return Material Authorization RMA number must first be obtained from the factory This may be done by Telephone FAX or e mail When requesting an RMA please provide the following information 1 Instrument model and serial number 2 User contact information 3 Return shipping address 4 Ifthe return is for service please provide a description of the malfunction If possible the original packing material should be retained for reshipment If not available consult factory for packing assistance Cryo con s shipping address is Cryogenic Control Systems Inc 17279 La Bri
17. and the ISR as well as to identify that the instrument has a message for the host in it s output queue It is queried using the Common Command STB Bits are defined as follows STB Where Bit6 RQS Request for Service Bit5 SE Standard Event This bit is set as the logical AND of the ESR and ESE registers Bit4 MAV Message Available Bit3 IE Instrument Event This bit is set as the logical AND of the ISR and ISE registers The Status Byte Register The Status Enable Register SRE is defined by the mask register for the STB It is set and queried using the Common Commands SRE Debugging Tips You can view the last command that the instrument received and the last response it generated by pressing the SYS key and scrolling down to the bottom of the menu The last two lines show gt and lt characters in the first character location indicating input and output strings 2 Some commands require the instrument to write to non volatile flash type memory which can be time consuming In order to avoid overrunning the instrument you may want to use compound commands that return a value thus indicating that command processing is complete For example INPUT A UNITS K UNITS will respond with the input units only after the command has completed Another example LOOP 1 SETPOINT 1234 5 OPC Here the operation complete command OPC will return a 1 when command processing is complete 3 Itis often eas
18. below this an enabled low temperature alarm condition will be asserted Temperature is assumed to be in the display units of the selected input channel There is a 0 25K hysteresis in the assertion of a high or low temperature alarm condition lt setpt gt is the alarm setpoint temperature INPut A B C D ALARm HIENa YES NO Sets or queries the high temperature alarm enable for the specified input channel An alarm must be enabled before it can be asserted INPut A B C D ALARm LOENa YES NO Sets or queries the low temperature alarm enable for the specified input channel An alarm must be enabled before it can be asserted INPut A B C D VBIAs 1 0V 10mV 1 0mV Sets or queries the constant voltage mode voltage used on the specified input channel This value only applies to sensors that use constant voltage excitation They are indicated by a sensor type of ACR If this query is used with a sensor type other than ACR it will always return N A for not applicable 79 Cryo con Model 12 14 Temperature Monitor Remote Programming Guide Analog Output Commands The set of analog output commands is used to configure the single analog output channel on the Model 12 14 This output is capable of outputting zero to 4 096 Volts and can be scaled to track any input channel AOUT SOURce A B C D Sets or queries the source input channel for the analog output AOUT ENABle YES NO Sets or
19. common English words not cryptic acronyms This makes command lines easy to read and understand even for someone that is not familiar with the instrument e The SCPI is a tree structured language where commands are divided into groups and associated commands into sub groups This architecture simplifies composing commands and improves readability Purpose If your intent is to remotely program a Cryo con instrument with fairly simple sequences you can skip to the section titled Commonly Used Commands This is a simple cheat sheet format list of the commands that are most frequently used If you are an advanced user with a familiarity of the SCPI programming language the section titled Remote Command Descriptions is a complete reference to all commands If you are not familiar with the SCPI language but need to perform advanced programming tasks the SCPI is introduced in the next section For all users the section titled Debugging Tips is often helpful and the Remote Command Tree is a single page listing that shows the syntax of each command 68 Cryo con Model 12 14 Temperature Monitor Remote Programming Guide An Introduction to the SCPI Language SCPI is an acronym for Standard Commands for Programmable Instruments Commonly pronounced skippy it is an ASCll based instrument command language defined by the IEEE 488 2 specification and is commonly used by test and measurement instruments SCPI commands are
20. fields will be deleted before they are stored 90 Cryo con Model 12 14 Temperature Monitor Appendix A Installed Sensor Curves The following is an example of a calibration curve transmitted to the instrument via the LAN interface Good Diode Diode 1 0 volts 0 34295 300 1205 0 32042 273 1512 0 35832 315 0000 1 20000 3 150231 1 05150 8 162345 0 53234 460 1436 In summary 1 The first line is a name string that can be up to 15 characters Longer strings are truncated by the instrument The second line identifies the instrument s input configuration and must be one of the allowed selections described in the Input Configurations section The third line is the multiplier field and is 1 0 for PTC sensors and 1 0 for NTC sensors The fourth line of the header is the sensor units and must be Volts Ohms or Logohm Curve entries must be the sensor reading followed by the temperature in units of Kelvin Values are separated by one or more white spaces Tab characters are not allowed The last line in the file has a single semicolon character All lines after this are rejected 91 Cryo con Model 12 14 Temperature Monitor Appendix B Troubleshooting Guide Appendix B Troubleshooting Guide Error Displays Or an erratic display of temperature Input channel voltage measurement is out of range Ensure that the sensor is connected and properly wired Ensure that the polarity of the sensor conne
21. in the power entry module The fuse drawer cannot be opened while the AC power cord is eee Line Voltage In the fuse drawer there is one active fuse and one 100VAC 120VAC 1 0A slow blow Littelfuse 313 002 spare Fuse current is determined by the AC line 220VAC 240VAC 0 5A slow blow Littelfuse 313 001 voltage Table 13 AC Power Line Fuses 18 Cryo con Model 12 14 Temperature Monitor Specifications Features and Functions Mechanical Form Factors and Environmental Display The display is a four line by twenty character dot matrix VFD Enclosure The Model 12 14 is bench mountable Rack mounting can be done by using an optional rack mount kit Dimensions are 5 75 W x 2 875 H x 8 75 D Weight is 3Lbs Environmental and Safety Concerns Safety The Model 12 14 protects the operator and surrounding area from electric shock or burn mechanical hazards excessive temperature and spread of fire from the instrument e Keep Away From Live Circuits Operating personnel must not remove instrument covers There are no internal user serviceable parts or adjustments Refer instrument service to qualified maintenance personnel Do not replace components with power cable connected To avoid injuries always disconnect power and discharge circuits before touching them e Cleaning Do not submerge instrument Clean exterior only with a damp cloth and mild detergent only e Grounding To minimize shock hazard the inst
22. is selected by the SS Time field This field determines how many minutes the instrument will wait until entering the screen saver mode The screen save mode is canceled by pressing any key 28 Cryo con Model 12 14 Temperature Monitor The User Interface RS 232 RS232 Rate is an enumeration of the RS 232 baud rate Choices are 9600 19 200 38 400 and 57 600 NOTE Changing the RS 232 baud rate will result in an instrument reset When reset is complete the selected baud rate will be used Data Logging The next four fields are used to configure internal data logging Logging is turned off or on by using the Data Log field This will start or stop recording all input channel data to an internal non volatile memory The data logging interval in seconds is set by the next field The Data Log Cnt field is display only and shows how many samples there are in the log buffer The Erase Data in Log field is selected to erase the internal log memory Press Enter to begin the erasure sequence The unit will then request confirmation Data accumulated into the log may be read out by using Cryo con s utility software or by use of remote commands The Network Configuration Menu The Network Configuration Menu is accessed from the System Setup Menu It is used to configure basic Ethernet LAN settings For advanced network settings use a web browser to view the embedded web server Network Configuration Menu a Press En
23. no e Dual Female Null Modem cable An example is Digikey Inc part number Ei Bete Table 12 RS 232 Connection The wiring diagram for this cable is shown below Note that communication with the Model 12 14 only requires connection of pins 2 3 and 5 All other connections are optional a Modem TN Model 34 DCD a RX 3 3 TX 4 4 DTR 6 6 DSR 7 7 RTS 8 8 CTS 9 9 RI DB9 DB9 DB9 Female Female Male Figure 3 RS 232 Null Modem Cable 16 Cryo con Model 12 14 Temperature Monitor Specifications Features and Functions Rear Panel 0100 120 AC Cryogenic Control Systems Inc 0 200 240V4AC Model 14 Temperature Monitor 75W Max Made in USA Inputs C D Aout Riy1 Rly2 NOC NOC Fuse 3AG 1 04 Figure 4 Model 12 14 Rear Panel Layout AC Power Connection The Model 12 14 requires single phase AC power of 50 to 60 Hz Voltages are set by the factory to either 110VAC or 220VAC Caution Protective Ground To minimize shock hazard the instrument is equipped with a three conductor AC power cable Plug the power cable into an approved three contact electrical outlet or use a three contact adapter with the grounding wire green firmly connected to an electrical ground safety ground at the power outlet The power jack and mating plug of the power cable meet Underwriters Laboratories UL and International Electrotechnical Commission IEC safety standards Power requirement is 25 Watts
24. queries the analog output enable When the output is disabled it outputs zero volts AOUT GAIN lt gain gt Sets or queries the analog output gain factor This is a decimal number ranging from 0 to 100 and is unit less AOUT OFFset lt offset gt Sets or queries the analog output offset factor This is a decimal number ranging from 0 to 1 000 and is in units of temperature Relay Commands The relay subsystem includes the two auxiliary relays in the Model 12 14 Using the RELAYS commands these relays may be independently configured to assert or clear based on the status of any of the four sensor input channels Relay outputs are dry contact and are available on the rear panel of the instrument The user selectable display time constant filter is applied to input channel temperature data before relay conditions are tested RELays 0 1 Relay Status Query The two auxiliary relays available in the Model 12 14 are addressed as 0 and 1 The RELAYS command can be used to query the status of each relay where Relay is clear SF Relay is asserted by a Sensor Fault condition HI Relay is asserted by a high temperature condition LO Relay is asserted by a low temperature condition There is a 0 25K hysteresis in the assertion of a high or low temperature conditions RELays 0 1 SOURce A B C D Relay Input Source Sets or queries the source input channel for a specified relay RELays 0 1 HIGHest lt setpt gt Rel
25. read outs available from the instrument may be completely controlled by any of these interfaces The 10 BaseT Ethernet connection is made via the RJ 45 connector on the rear panel The Serial port is an RS 232 standard null modem with male DB9 connector Rates are 9600 38 400 and 57 200 Baud The programming language used by the Model 12 14 is identical for all interfaces and is SCPI language compliant The Standard Command Protocol for programmable Instruments SCPI is a sub section of the IEEE 488 2 standard and is a tree structured ASCII command language that is commonly used to program laboratory instruments Ethernet LAN Connection The 10BaseT Ethernet network RJ 45 system is used by the Model 12 14 for Ethernet network connectivity The 10 Mbps twisted pair Ethernet system operates over two pairs of wires One pair is used for receiving data signals and the other pair is used for transmitting data signals This means that four pins of the eight pin connector are used ETHERNET C Pin Name Description _ 8 3 RX ReceieData Rx Receive Data Not Connected Figure 2 LAN RJ 45 Pinout 10BaseT Straight Through Patch Cable When connecting the Model 12 14 to a hub or switch a standard patch cable is used This will connect the instrument s transmit lines to the hub s receive lines etc 10BaseT Crossover Cable When connecting the Model 12 14 directly to the computer the transmit data
26. run the Utility Software provided with the instrument The Utility Software must be version 7 4 2 or higher From the start up menu of the Utility Software click the Connect button in the bottom of the Short Cuts toolbar The software will connect to the instrument and display the connection status below the button In case of an error please correct the port connection settings and try again From the main menu select Operations gt Unit Cal The program will read the current calibration values from the instrument and display a calibration screen as shown below All calibration operations can be performed by using this screen x Si Diode Y i Diode I 1m DC 100uADC 1044 DC 1044 AC 10044 AC ImAAC T of 0 Steps m Calibration Reults Channel 4 y Current Step Calibrating CHA Silicon Diode Volt Calibrate ik ig Apply 1 9Y and enter actual volt Status Current 2 Ss Capture Abort Gain fo 0 5 3 Apply 0 5 and enter actual volt Offset roo i Capture Abort Cancel Figure 12 Instrument Calibration Screen c Note Cryo con instruments will require a password before calibration data can be saved The utility software will allow you to enter and change the password The default password is cryocon On the far right of the screen a drop down box selects the channel to be calibrated Be sure you have selected the correct channel In order to perform a complete calibration you
27. selectable to seven significant digits Input Channels There are two input channels on the Model 12 and four on the Model 14 They are identical and each may be independently configured for any of the supported sensor types Sensor Connection 4 wire differential DB 9 receptacles connect two channels Connections are described in the Sensor Connections section Isolation Sensor circuits are not electrically isolated other internal circuits However there is a single point internal connection to Earth or Shield ground in order to minimize noise coupling Input Protection 30 Volts maximum Supported Sensor Types Include Type __Excitation Temperature Range Cernoxm fConstantVotiage AC _0 310420K Germanium onstantVollage AC _S00mKto 100K Sensor Selection Front Panel or remote interface There are no internal jumpers or switches Accuracy Resolution and Drift Diode Sensors Configuration DC Constant Current Excitation 10uA DC Input voltage range 0 2 50VDC Accuracy 60uV 0 005 reading Resolution 2 3uV Drift lt 25ppm C Cryo con Model 12 14 Temperature Monitor Specifications Features and Functions PTC Resistor Sensors Configuration DC Constant Current Ratiometric resistance bridge Excitation 1mA 100u4A or 10u4A DC Resistance Ranges 6250 6 25KQ and 62 5KQ Measurement Drift lt 25ppm C 1mA 6250 0 6m2 0 002 0 01 Q 100A 6 25KQ
28. temperature SenSen is the sensor sensitivity in Ohms Kelvin at the desired temperature To calculate measurement accuracy using a 100Q Platinum RTD in the PTC100 range with the sensor at 77 35K we would look up the sensor reading and sensitivity in Appendix E and see that SenRdg is 20 38Q and SenSen is 0 423 Q Kelvin Therefore we compute MAR 0 004038Q and MAT 9 5mK For ranges other than PTC100 please refer to the PTC Specifications table Cryo con Model 12 14 Temperature Monitor Specifications Features and Functions NTC Resistor Sensors From Accuracy and Resolution for NTC Resistors table the formulas for NTC resistor sensors are Where MAR 5 010 gt SenVal 5 010 gt Range MAR is the electronic Measurement Accuracy in Ohms Range is the full scale resistance range in Ohms 100 1K or 10K MAT is the Measurement Accuracy in Kelvin SenRdg is the sensor reading in Ohms at the desired temperature SenSen is the sensor sensitivity in Ohms Kelvin at the desired temperature To calculate measurement accuracy using a Cryo con R400 Ruthenium Oxide sensor in the 10KQ range with the sensor at 4 0K we would look up the sensor reading and sensitivity in Appendix E and see that SenRdg is 207807Q and SenSen is 11343Q Kelvin Therefore we compute MAR 0 50 and MAT 40uK Input Channel Characteristics There are two independent multi purpose input channels on the Model 12 and four on the Model 14 each of
29. the Standard Event SEV status register OPC The OPC command will cause the instrument to set the operation complete bit in the Standard Event SEV status register when all pending device operations have finished The OPC Query places an ASCII 1 in the output queue when all pending device operations have completed IDN The IDN Query will cause the instrument to identify itself The Model 12 14 will return the following string Cryocon Model 12 lt serial number gt lt firmware revision gt Where lt serial number gt is the unit s serial number and lt firmware revision gt is the revision level of the unit s firmware RST Reset the instrument This will cause a hardware reset in the Model 12 14 The reset sequence will take about 15 seconds to complete During that time the instrument will not be accessible over any remote interface The RST command sets the Model 12 14 to it s last power up default setting SRE The SRE command sets the Status Byte Enable SRE Register bits The SRE Register contains a bit mask for the bits to be enabled in the Status Byte STB Register A one in the SRE register will enable the corresponding bit in the STB register A zero will disable the bit The SRE Query returns the current contents of the SRE register STB The STB query returns the contents of the Status Byte Register 76 Cryo con Model 12 14 Temperature Monitor Remote Programming Guide Sy
30. will normally flow through the connections to this ground Therefore it provides a good quality low impedance path to ground for any undesired currents that are coupled into the equipment AC Power Entry AC Power enters the instrument directly into a power entry module This provides fusing line voltage selection and RFI filtering The Building Ground often referred to as Earth Ground Shield Ground or Third Wire Ground is connected to the shield of the Power Entry RFI filter then to the instrument s Single Point Ground Since the grounding and shielding scheme depends on having a good quality grouna this Earth Ground connection is extremely important Noise and ground loop problems are often traced to how this connection is made If your facility does not provide a building ground it is strongly recommended that one be fabricated Sensor Connection For best performance all sensors connected to the instrument should be electrically isolated floating from any other grounds Sensors used in cryogenic thermometry are often high impedance For example a Silicon Diode temperature sensor will have about 160K ohms of impedance at 5K Because of this a very efficient antenna can develop around the sensor and its connections Requiring these sensors to be floating and providing a low impedance path to ground is the most effective way to eliminate noise pickup from this antenna effect To ensure that the instrument s gr
31. 32 interface uses a New Line or Line Feed character as a line termination In the C programming language this character is in or hexadecimal OxA When sending strings to the monitor any combination of the following characters must be sent to terminate the line 1 Carriage Return Hex OxD 2 Line Feed n Hex OxA 3 Null O The monitor will always return the carriage return linefeed r n character sequence at the end of each line 67 Cryo con Model 12 14 Temperature Monitor Remote Programming Guide Remote Programming Guide General Overview This brief is intended to assist the user interested in remote programming of any Cryo con instrument The remote interface language is common to all Cryo con products Since the language supports both simple and advanced functions it may initially seem complex However the use of English language keywords and a tree structured architecture make it easy to read and learn Language Architecture The programming language used by all Cryo con instruments is described as follows e The industry standard SCPI language defined by the IEEE 488 2 standard is used Therefore anyone with experience in test and measurement will find it familiar e All Cryo con instruments use the same language and future instruments will continue in the same fashion Therefore your investment in system software will not be lost when a product is revised or obsoleted e Keywords used in commands are
32. 5 to 450K Lakeshore Curve 10 Silicon Diode curve for DT 470 series diodes Range 1 4 to 495K Lakeshore Curve 10 Silicon Diode curve for DT 670 series diodes Range 1 4 to 500K CTI Silicon Diode Range 10K to 320K Cryo con CP 100 DIN43760 or IEC751 standard Platinum RTD 1000 at 0 C Range 23 to 1020K DIN43760 or IEC751 standard Platinum RTD 10004 at 0 C Range 23 to 1020K Platinum RTD 1000 at 0 C Temperature coefficient 0 003902 Q C Range 73K to 833K Platinum RTD 1000Q at 0 C Temperature coefficient 0 00375 Q C Range 73K to 833K Rhodium lron 27Q at 0 C 1mA DC excitation 1 5 to 873K RO105 DC10uA crv Scientific Instruments Inc RO 105 Ruthenium Oxide sensor DC excitation Range 273K to 2 0K Low sensitivity above 20K RO600_DC10UA crv Scientific Instruments Inc RO 600 Ruthenium Oxide sensor DC CX1030E1 crv excitation Range 273K to 2 0K Low sensitivity above 20K Cernox CX1030 example curve Range 4 to 325K 89 Cryo con Model 12 14 Temperature Monitor Appendix A Installed Sensor Curves User Calibration Curve File Format Sensor calibration curves may be sent to any Cryo con instrument by using a properly formatted text file This file has the extension crv It consists of a header block lines of curve data and is terminated by a single semicolon character The header consists of four lines as follows Sensor Name Sensor name string Sensor Type Enumeratio
33. 6 gain 300 offset From the first equation we see that offset 2 Kelvin Plugging that into the second equation we can compute the gain as gain 0 013745 In general if you want to scale a given temperature range to the full scale of the analog output use the following formulas offset Tmin gain 4 096 Tmax Tmin Where Tmin is the minimum temperature and Tmax is the maximum temperature If the output voltage is off scale the analog output will simply clip at the high and low limits Configuring the Analog Output The easiest way to set offset and gain values is to use the embedded web server s Output Page This easily lets you dial in the required decimal numbers for offset and gain Configuration can also be performed by using the front panel by using the Analog Output menu However inputting decimal numbers for offset and gain by using the limited keypad is something of a challenge 35 Cryo con Model 12 14 Temperature Monitor System Shielding and Grounding Issues System Shielding and Grounding Issues Grounding Scheme The grounding scheme used in all of Cryo con s instruments is based on a Single Point Ground and is designed to minimize ground loop and noise pickup by assuming that the Sensor elements are electrically floating The Single Point Ground The internal Single Point Ground is the voltage reference point for the instrument s grounding scheme All circuits are designed so that no current
34. 6mQ 0 02 0 02 Q 101A 62 5KQ 60ma 3 0 0 04 Q Table 4 Accuracy and Resolution for PTC Resistors NTC Resistor Sensors Configuration AC Constant Voltage Ratiometric resistance bridge Excitation Voltage 1 0V 10mV and 1 0mV RMS Excitation Current 1 0mA to 200nA Excitation Frequency 1 25Hz bipolar square wave Accuracy reading range Reading gt 4Q and lt 30KQ 0 05 0 05 Reading gt 0 04Q and lt 1 0MQ 0 15 0 15 Resolution 0 0002 of range Drift lt 25ppm C DC Offset Current lt 10nA 10 1 0mA 500 204A 100 1 0mA 100A 5000 20A 2 0pA 1000 1004A 10A 5 0KQ 2 0pA 200nA 1KQ 1 0mA 10U4A 50KQ 20uA 200nA 10KQ 1004A 500KQ 2 0UA 100KQ 10A Max Current 1 0MQ 200nA Min Current Table 5 Accuracy and Resolution for NTC Resistors O Note The 1 0V Constant Voltage range is intended for use with sensors that have over 50KQ of resistance These are commonly used in low temperature superconductor systems and include the Cryo con R400 Ruthenium Oxide devices All other NTC resistor sensors should use the 10mV setting Cryo con Model 12 14 Temperature Monitor Specifications Features and Functions Sensor Excitation Constant current mode 1mA 100uA or 10uA Constant voltage mode 1 0V 10mV and 1 0mV RMS Excitation Current 1 0mA to 200nA in steps of 5 of power Sample Rate 10Hz per channel in all measurement modes Digital Resol
35. As Diode GaAiAs diode sensors offer good sensitivity over a wide range of temperatures However they do not follow a standard calibration curve Useful in magnetic fields below 5T and a temperature above 30K Outside of this range a Ruthenium Oxide sensor offers better performance GaAiAs diode sensors use a constant current DC excitation of 10uA The Model 12 14 limits low temperature operation to 25K since that is outside of the limits for use in magnetic fields Shaded entries are outside of the Model 12 14 s temperature range T K Volts mV K 1 4 5 3909 97 5 4 2 4 7651 214 10 3 7521 148 20 2 5341 97 5 30 1 8056 48 2 50 1 4637 2 82 77 35 1 4222 1 24 100 1 3918 1 48 150 1 2985 2 25 200 1 1738 2 64 250 1 0383 2 77 300 0 8978 2 85 350 0 7531 2 99 400 0 6066 2 97 450 0 4556 3 08 475 0 3778 3 15 100 Cryo con Model 12 14 Temperature Monitor Appendix E Sensor Data Tables Platinum RTD Platinum RTD sensors feature high stability low magnetic field dependence and excellent interchangeability They conform to the DIN43760 standard curve The Model 12 14 uses 1 0mA Constant Current DC excitation T K Ohms QIK 20 2 2913 0 085 30 3 6596 0 191 50 9 3865 0 360 77 35 20 380 0 423 100 29 989 0 423 150 50 788 0 409 200 71 011 0 400 250 90 845 0 393 300 110 354 0 387
36. Operation Remote Interface Configuration The Model 12 14 has two remote interfaces The 10 BaseT Ethernet LAN and the RS 232 Connection to these interfaces is made on the rear panel of the instrument For specifics about the connectors and cables required refer to the section above on Rear Panel Connections Configuration of the remote interfaces is done at the instrument s front panel by using the Remote l O Setup Menu All configuration information shown on this screen is stored in non volatile memory and once setup will not change when power is turned off or a remote interface is reset Ethernet Configuration Supported Protocols HTTP The Hypertext Transfer Protocol is a standard protocol used for transferring information between hosts over TCP IP based networks the most common being the Internet HTTP is often referred to as the World Wide Web protocol because it manipulates interconnected information around the globe The Model 12 14 HTTP server manages multiple connections simultaneously HTTP is a client server protocol The client host initiates a transfer by contacting the server host The most common HTTP client is a web browser such as Microsoft Internet Explorer or Netscape Navigator The web browser referred to as the web client issues HTTP requests to access information from the Model 12 14 SMTP The Simple Mail Transport Protocol is used to send E mail from the Model 12 14 to a selected address TIMEP The T
37. S M seconds Selections range from 0 5S to 16S z Sets the resolution Selections are 1 2 2 Di splyRS 3 N eS a Enable or disable the screen save Screen Save Yes N mode Choices are Yes and No z Screen saver time out in minutes 4 SS Time Choices are 5 10 15 20 25 and 30 s Rs232 9600 w Start or stop data logging to an internal 7 pata Log 5 sec Data Log Cnt 195 e Erase Data in Log 8 Table 20 System Functions Menu Display Time Constant The first line of the System Functions Menu is Display TC Or Display time constant This is an enumeration field that sets the time constant used for all temperature displays Choices are 0 5 1 0 2 0 4 0 8 0 and 16 0 Seconds The time constant selected is applied to all channels and is used to smooth data in noisy environments Display Resolution The Display Resolution line Display RS is used to set the temperature resolution of the front panel display Settings of 1 2 or 3 will fix the number of digits to the right of the decimal point to the specified value A setting of FULL will left justify the display in order to show the maximum resolution possible The Screen Saver The Model 12 14 has a built in screen saver When enabled this will significantly increase the lifetime of the front panel display and will reduce the operating temperature of the instrument The screen saver is enabled by selecting YES in the Screen Save field The screen saver timeout
38. TC Resistor Sensor Configuration Available voltage selections are 1 0V 10 0mV and 1 0mV RMS The maximum and minimum sensor resistance that can be read is a function of the selected voltage bias Power dissipation in the sensor is computed by Ve P 2 bias Sensor Cryo con Model 12 14 Temperature Monitor Specifications Features and Functions Sensor Connections All four sensor connections are made at the rear panel of the Model 12 14 using the two DB 9 receptacles provided Th ere are two channels on each connector Four Wire Sensor Connections Silicon Diode and all resi stor type sensors should be connected to the Model 12 14 using the four wire method It is strongly recommended O that sensors be connected using shielded twisted pair wire Cable shields should be dressed for connection to the conductive backshell of the connector Signal connection is as follows O Figure 1 Input Connector Input Channel Cuente 87 Current o Curone 6 Current Upper currents 8 Upper Curentey 9 Sense Upper Sorso 5 Upper Currents 6 Table 9 Sensor Input Connector Pinout Caution To ensure proper low noise operation cable shields should be connected to the metal backshell of the connector Please refer to the section on shielding and grounding for further information 12 Cryo con Model 12 14 Temperature Monitor Specifications Features and
39. The actual value is between 1 0 Volts and 2 4 Volts If you do not have a precision voltage source you can use a 1 5 Volt battery by using a high precision volt meter to measure it s actual voltage The lower target requires connection of a 0 5 Volt source The actual value is between zero Volts and 0 6 Volts If you do not have a precision voltage source you can short the input channel for zero volts Constant current Source Calibration Calibration of the constant current source is performed by using the SI Diode I tab On this screen only an upper target value is required since the current source only requires a gain term The upper target requires connection of a 100KCresistor The actual value should be within 10 of 100KO Calibration of DC resistors Resistor sensors that use direct current excitation are calibrated by using the 1mA DC 100uA DC and 10uA DC tabs Resistors required for calibration are as follows a 1mA DC Upper 1000 Lower 100 a 100uA DC Upper 1 000 OLower 100 Q Q 10uA DC Upper 10 000 QLower 1 000 Q Calibration of AC resistors Resistor sensors that use auto ranged AC excitation are calibrated by using the 1mA AC 100uA AC and 10uA AC tabs Resistors required for calibration are as follows a 1mA AC Upper 1000 Lower 100 a 100uA AC Upper 1 0000 Lower 1000 a 10uA AC Upper 10 0000 Lower 1 0000 64 Cryo con Model 12 14 Temperature Monitor Remote Operation Remote
40. UT A ISENIX 0 would turn input A off by setting the sensor to none 87 Cryo con Model 12 14 Temperature Monitor Appendix A Installed Sensor Curves User Installed Sensor Curves The user may install up to four custom sensors This table shows the sensor index and default name of the user curves usenix 7 Default Name index o o oes a Sers 2 2 Siers 44 Usersensors ss Usersensor U When using the CALCUR commands only user curves are addressed therefore the user index usenix shown above is used The USENIX remote commands address user installed curves For example CALCUR 2 would address user curve 2 INPUT A USENIX 1 would set input A to use User Sensor 1 88 Cryo con Model 12 14 Temperature Monitor Appendix A Installed Sensor Curves Sensor Curves on CD The following sensors are available on the CD supplied Cryocon S700 Cryocon S800 Cryocon S900 CryocalD3 crv 1410 crv Curve10 crv Curve11 crv CTldiode crv PT100385 crv PT1K385 crv PT1003902 crv PT1K375 crv RhFe 27 crv Cryo con S700 series Silicon Diode Range 1 4 to 500K 10u4A constant current excitation Cryo con S800 series Silicon Diode Range 1 4 to 500K 104A constant current excitation Cryo con S900 series Silicon Diode Range 1 4 to 500K 104A constant current excitation Cryocal D3 Silicon Diode Range 1 5 to 300K Scientific Instruments Inc Sl 410 Silicon Diode Range 1
41. User replaceable fuses are incorporated in the Power Entry Module Cryo con Model 12 14 Temperature Monitor Specifications Features and Functions AC Line Voltage Selection The Model 12 14 is set at the factory for AC line voltages of 100 120VAC or 200 240VAC The selection is marked on the rear panel above the power entry module Voltage selection can be changed in the field by opening up the unit and moving jumper chips To change the voltage selection please follow the procedure below 1 Disconnect the AC power cord 2 Lay the unit upside down on a flat surface and remove the four screws that hold the rear panel in place 3 Gently slide the circuit board out by about two inches This will expose the voltage selection jumpers shown here 4 Add or remove the chip jumpers required to select the desired voltage Note the chip Line Voltage Remove Install jumpers are easily removed by using two soldering irons If you do not have a chip 220VAC 240VAC RA120 RB120 RA220 substitute a short piece of wire 100VAC 120VAC RA220 RA120 RB120 5 Slide the unit back together and re install the four screws Mark the voltage selection on the rear panel in the space provided Do NOT reconnect the AC power cord until the unit is completely reassembled Fuse Replacement Access to the Model 12 14 s fuses and voltage selector switch is made by using a screwdriver to open fuse drawer
42. User s Guide Model 12 14 Cryogenic Temperature Monitor CRYOGENIC CONTROL SYSTEMS INC P O Box 7012 Rancho Santa Fe CA 92067 Tel 858 756 3900 Fax 858 759 3515 www cryocon com Copyright 2008 Cryogenic Control Systems Inc All Rights Reserved Printing History Edition 6 August 2008 Certification Cryogenic Control Systems Inc Cryo con certifies that this product met its published specifications at the time of shipment Cryo con further certifies that its calibration measurements are traceable to the United States National Institute of Standards and Technology NIST Warranty This product is warranted against defects in materials and workmanship for a period of one year from date of shipment During this period Cryo con will at its option either repair or replace products which prove to be defective For products returned to Cryo con for warranty service the Buyer shall prepay shipping charges and Cryo con shall pay shipping charges to return the product to the Buyer However the Buyer shall pay all shipping charges duties and taxes for products returned to Cryo con from another country Warranty Service For warranty service or repair this product must be returned to a service facility designated by Cryo con Limitation of Warranty The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by the Buyer Buyer supplied products or interfacing unauthor
43. alibration Curve a display of seven dot characters is shown 23 Cryo con Model 12 14 Temperature Monitor The User Interface Instrument Setup Menus The root of the instrument s setup menus is accessed by pressing the Enter key from the Home display The Root Menu The Root Menu displays the list of sub menus that are used to configure the instrument Press the Enter key to descend into the sub menu or the 4 key to return to the Home Status display Selections in the root menu are as follows Model 12 14 Root Menu ChC Setup ChD Setup Analog Output Relay Setup Relay2 Setup System Setup Net Config Time Date Setup Table 16 Model 12 14 Root Menu ChA Setup 2 ChB Setup 3 Y 2 EA EN EA EA E o a 24 Cryo con Model 12 14 Temperature Monitor The User Interface Input Channel Setup Menu The Input Channel Setup menus are used to configure the two input channels They are accessed from the root menu The first character on each line of these menus is always the input channel identifier which is a superscripted A B C or D Scrolling to a line using the amp or Y keys and then pressing the Enter key will cause the cursor to change from a block cursor to the data entry cursor type that corresponds to the type of data that may be entered in this field ChA ChB ChC ChD Setup Menu Input channel units Temperature is displayed in real time on the left and is in the selected
44. alibration curve use the same procedure and select Upload This will transfer a curve from the instrument to the PC 50 Cryo con Model 12 14 Temperature Monitor Cryo con Utility Software Using the Real Time Strip Charts The real time strip chart feature of the Utility Software lets the user continuously display any combination of input channels on the computer display This function is initiated by selecting the View command on the Utility Software s main toolbar then selecting the desired channels to monitor A strip chart will be displayed for each channel selected The dialog box will show the channel s Input Identifier Name String and a chart of current temperature The update rate of the chart is locked to the program s Data Logging Interval The section below details how to set this value 51 Cryo con Model 12 14 Temperature Monitor Cryo con Utility Software Data Logging The Utility Software will perform data logging on all of the instruments input and control output channels The result is a disk file in Comma Separated Value or CSV format This format is compatible with any data analysis or charting software including Microsoft Excel To initiate data logging select the Data Logging button from the Utility Software s main menu The Data Logging Setup dialog box will now appear Data Logging Setup Dialog eo mj mj so Cano On this dialog box check th
45. alibration curve should be entered here For the Model 12 14 user curves are 1 through 6 o Please check user manual forthe number of user curves for the target model The user curves are after the factory curves in Sensor Setup Enter user curve number fi Cancel 49 Cryo con Model 12 14 Temperature Monitor Cryo con Utility Software When OK is selected the sensor calibration curve will be downloaded to the instrument During the transfer curve data points will be displayed in the window s main pane Upon completion the Download Complete dialog box will appear Dismiss this dialog box to complete the download process gt Cryo con Utility Software dloader 1O x File Comm Firmware Calibration Table PID Table View DataLogging Help 155 449997 163 369995 171 289993 179 210007 187 139999 195 059998 202 979996 210 899994 218 820007 226 740005 234 660004 242 589996 250 509995 258 429993 266 350006 274 269989 282 190002 290 109985 298 040009 305 959991 313 880005 321 799988 Ready 413 149994 433 149994 453 149994 473 149994 493 149994 513 150024 533 150024 553 150024 573 150024 593 150024 613 1500 MMT xi 633 1500 653 1500 673 1500 Downloading to Calibration Curve 1 Please wait 693 1500 713 1500 0 MERA AAA 100 733 1500 753 1500 113150027 ERNST al 793 150024 813 150024 A Download Complete 833 150024 To upload a c
46. ay High Set Point Sets or queries the temperature setting of the high temperature set point for the specified relay When this temperature is exceeded on the source input channel a high temperature condition will cause the specified relay to be asserted lt setpt gt is the value of the set point Units of set point are temperature which is in the display units of the source input channel There is a 0 25K hysteresis in the assertion of a high or low temperature condition 80 Cryo con Model 12 14 Temperature Monitor Remote Programming Guide RELays 0 1 LOWEST lt setpt gt Relay Low Set Point Sets or queries the temperature setting of the low temperature set point for a specified relay When the source input channel temperature is below this value an enabled low temperature condition will be asserted Temperature is assumed to be in the display units of the selected source input channel There is a 0 25K hysteresis in the assertion of a high or low temperature alarm condition RELays 0 1 HIENa YES NO Relay High Enable Sets or queries the high temperature enable for the specified relay A relay must be enabled before it can be asserted RELays 0 1 LOENa YES NO Relay Low Enable Sets or queries the low temperature enable for the specified relay A relay must be enabled before it can be asserted Sensor Calibration Curve Commands The CALCUR commands are used to transfer sensor calibration curves between t
47. based on a hierarchical structure also known as a tree system In this system associated commands are grouped together under a common node or root thus forming subsystems A portion the command tree for a Cryo con instrument is shown here INPut SYSTem TEMPerature BEEP UNITs ADRS VARIance LOCKout SLOPe ALARm NAMe LOOP CONFig SETPT SAVE RANGe RESTore RATe In the above INPut and LOOP are root keywords whereas UNITs and RATe are second level keywords A colon separates a command keyword from lower level keyword Command Format The format used to show commands is shown here INPut A B C D ALARm HIGH lt value gt NAMe name The command language is case insensitive but commands are shown here as a mixture of upper and lower case letters The upper case letters indicate the abbreviated spelling for the command For shorter program lines send the abbreviated form For better program readability send the long form For example in the above statement INP and INPUT are all acceptable Braces enclose the parameter choices for a given command string The braces are not sent as part of the command string A vertical bar separates multiple parameter choices for a given command string Triangle brackets lt gt indicate that you must specify a numeric value for the enclosed parameter Double quote marks must enclose string parameters Commands are terminated using a semicolon character Th
48. character string Open the instrument If LAN open IPA can t connect LAN close throw Cant talk to instrument read the IDN string LAN IO IDN tempstr 256 printf IDN is s n tempstr Print IDN read the MAC address LAN IO net mac tempstr 256 printf MAC is s n tempstr Start temperature control LAN IO control Stop temperature control LAN IO stop Read channel B input LAN IO input B tempstr 256 printf Channel B temperature is s n tempstr send compound command to input channel A and wait for it to finish LAN IO INPUT A UNIT S ISENIX 33 OPC tempstr 256 close the instrument LAN close 83 Cryo con Model 12 14 Temperature Monitor EU Declaration of Conformity EU Declaration of Conformity According to ISO IEC Guide 22 and EN 45014 Product Category Process Control Equipment Product Type Temperature Measuring and Control System Model Numbers Model 12 14 Manufacturer s Name Cryogenic Control Systems Inc Manufacturer s Address P O Box 7012 Rancho Santa Fe CA 92067 Tel 858 756 3900 Fax 858 759 3515 The before mentioned products comply with the following EU directives 89 336 EEC Council Directive of 3 May 1989 on the approximation of the laws of the Member States relating to electromagnetic compatibility 73 23 EEC Council Directive of 19 Februa
49. ctions is correct Refer to the Sensor Connections section Many sensors can be checked with a standard Ohmmeter For resistor sensors ensure that the resistance is correct by measuring across both the Sense and Excitation contacts For a diode sensor measure the forward and reverse resistance to ensure a diode type function Input channel is within range but measurement is outside the limits of the selected sensor s calibration curve Check sensor connections as described above Ensure that the proper sensor has been selected Refer to the Input Channel Setup Menus section Change the sensor units to Volts or Ohms and ensure that the resulting measurement is within the selected calibration curve Refer to the section on Sensor Setup to display the calibration curve 93 Cryo con Model 12 14 Temperature Monitor Appendix B Troubleshooting Guide Temperature Measurement Errors Noise on temperature Possible causes measurements Excessive noise pickup especially AC power line noise Check your wiring and shielding Sensors must be floating so check that there is no continuity between the sensor connection and ground Check for shielding problems by temporarily removing the input connector s backshell If the noise changes significantly current is being carried by the shields and is being coupled into the monitor Use a longer display filter time constant to reduce displayed noise DC offset in Po
50. curves 1 through 8 Note The use of the ISENIX command to assign a factory installed sensor and the USENIX command to assign a user sensor are preferred to the use of the obsolete SENIX command 78 Cryo con Model 12 14 Temperature Monitor Remote Programming Guide INPut A B C D ALARm Queries the alarm status of the specified input channel Status is a two character string where indicates that no alarms are asserted SF indicates a Sensor Fault condition HI indicates a high temperature alarm LO indicates a low temperature alarm There is a 0 25K hysteresis in the assertion of a high or low temperature alarm condition The user selectable display time constant filter is applied to input channel temperature data before alarm conditions are tested INPut A B C D ALARm HIGHest lt setpt gt Sets or queries the temperature setting of the high temperature alarm for the specified input channel When this temperature is exceeded an enabled high temperature alarm condition will be asserted Temperature is assumed to be in the display units of the selected input channel There is a 0 25K hysteresis in the assertion of a high or low temperature alarm condition lt setpt gt is the alarm setpoint temperature INPut A B C D ALARm LOWEst lt setpt gt Sets or queries the temperature setting of the low temperature alarm for the specified input channel When the input channel temperature is
51. de 98 power entry Module ooooonococoncccconcccconcccnonccnonannoncncncnnnncnnnns 37 Lab View titi des de a dl EA 7 Protective Ground ceci acta 17 Mi iii 3 ACCESSOMICS lt ccc cascerscicccteceecessceecarcensenesenecencosccencaatevecnecet caves seteaes 4 TOP Puccini mi ici 65 Al Mii aa aE tote LAN aii A A 15 As play isi2e sew Horace Wet Sallie Ari 21 CONPQUPALION scott a 29 Ml ici ait ees 41 COMEN ion 16 A ete davdebsauh ieee keel eon a 25 Pida a ia e DAA 29 hYSterosiS ion Ad 26 patomcable citar 15 66 95 hysteresiSic 40S ete O dadas 14 LED Indicators e da el 22 ED oia il 22 Panel MoOUNt cmocisair air das low temperature 25 outputs 14 setpoint 25 A AO VEEE aaia 7 Analog QU pUL cutis dr 7 14 27 CONNECHON singanini lito eds elt 14 Analog Outpute sseteric pea esses Abate ee CONNGCION iaa id 1 4 7 CONNOR a o re 4 hysteresiS cai ee 14 ASC PRR quid perc PACER pr pene ee er a edad odds 15 EEN a llo da dal o ll dd ed Ara 22 Data Logging Anees se iiaea e al des MENU rice tenn aa ri td 27 rola ile LULKE LILO g PE EA AE E E i ess rie es teeta 28 QUUDUTS as alias a e one 7 14 Do sai a aad oe at ai nat eet 7 SOIPOINE se aes eee cas Anas ld 27 AU eee tae th AN toate area ee 24 PO OA sage 14 Returning Equipment c cccesceceeeeeeeseeeeeeeeeeeeeeeeeeeeteeeeeeaee 3 RS2282 iia Illas 15 29 configuration 07 COnnEGtiOM ae iaai ses ag a dereseeven 16 Safety CONCA ii da 19 Safety Symbol Sisri Sieg
52. e range as the Model 12 14 IP address 192 168 0 x and connect to the instrument using a crossover cable between your PC and the Model 12 14 Once the IP is correctly set you can go to the DOS Prompt and ping 192 168 0 4 If you receive responses back you can go to the Web browser and type in http 192 168 0 4 and it will take you to the Model 12 14 s Home Page 65 Cryo con Model 12 14 Temperature Monitor Remote Operation From the Model 12 14 s web page you can completely configure the instrument to meet your network requirements Web site configuration The Model 12 14 factory default settings are as follows IP address 192 168 0 4 Subnet Mask 255 255 255 0 Gateway 192 168 0 1 TCP Data Socket 5000 These settings are also entered into the Model 12 14 when the LAN Reset sequence is executed from the front panel The Model 12 14 does not support DHCP since dynamic addressing could possibly relocate the unit on the LAN with each power up LAN configuration is performed by the Network Configuration web page described in the Network Configuration section above To display this page in your web browser you must first connect to the Model 12 14 When the above factory defaults are set the Model 12 14 can be connected to a PC on the same LAN segment by using the LAN connector on the rear panel If you are connecting to a LAN switch or hub use a standard Category 5 patch cable with standard RJ 45 c
53. e the selection of the number of points is not required Example CalGen Procedure A complete procedure for calibrating a diode sensor at three points is shown here Before the procedure can be started the instrument must be connected and have a valid sensor connected The CalGen procedure will require the user to stabalize the input temperature at three user selected points It will capture data at each of these points and then generate a new curve from that data When a 3 point CalGen is started for a Silicon Diode sensor the reference curve must first be selected This is the curve that will be rotated and shifted to fit the selected points 55 Cryo con Model 12 14 Temperature Monitor Cryo con Utility Software 56 Cryo con Model 12 14 Temperature Monitor Cryo con Utility Software When the curve has been selected the following dialog box will appear Enter three reference points x Enter a reference point close to 4 2K Temperature fo Voltage fo Enter a reference point close to 77K Temperature fo Voltage fo Enter a reference point close to 300K Temperature fo Voltage fo Cancel Vapor Pressure The process requires you to completely fill out this dialog box by selecting a temperature and then copying the voltage or resistance reading corresponding to that temperature from the instrument Note that the Vapor Pressure button will take the user to a c
54. e A O A a kakaii 68 An Introduction to the SCPI LanguagO ssuci nccasisna csi 69 DENOTA Tac o dai iia 73 Remote Command Tinaco 74 Remote Command DescriptiONS ooooononnnininicicocnnnncncccnnnccnnccnnnnnnnnnnnns 76 Code snippet in Direcc iota nara eann a E E 83 EU Declaration of ORTO coord res ioneina iria 85 Appendix A Installed Sensor CurveS cccccccccccceeeeeeeeeeeeeeeeeeeeeeeeeneeeeees 87 Factory Installed CU CS coin nhnangenes neniani na 87 User Installed Sensor CUWYES curia ride 88 Sensor Gutes on ia ee 89 User Calibration Curve Fil Formal accaionorico ira 90 Appendix B Troubleshooting Guide ccccccccecceceeeeeeeeeeeeeaaaaeeees 93 Emor Depay Srana 93 Temperature Measurement Errors ccccccccccceceeeeeeeeeeeeeeeeeeeeeeeaeeees 94 Remote VO Problems cuna iia AA AA 95 Appendix Cr Enclosure Opt scriciconncai pair a aa a 97 Panel Mount Guanare 97 instrument Stand serne Aa 98 Appendix E Sensor Data TablES us morsa nia acia 99 O A O O 105 Cryo con Model 12 14 Temperature Monitor Table of Contents Index of Tables Table 1 Model ldantificatone scere a 1 Table 2 Model 12 14 Instrument Accessories 4 Table 3 Cryogenic ACCessoOrieS ooocccccconncococcccconononnccnnnonnnrn nc cnn rra 4 Table 4 Accuracy and Resolution for PTC Resistors 6 Table 5 Accuracy and Resolution for NTC Resistors 6 Table 6 Input Configurations ccccceeceeeenereeeeeeeenneeee
55. e Model 12 14 s 4 2 574 20 97 344 temperature range 6 451 41 48 174 10 331 67 19 042 User onfia ACR 10m 20 225 19 6 258 T K Ohms QK 30 179 12 3 453 0 1 21389 558110 40 151 29 2 249 0 2 4401 6 38756 50 132 34 1 601 0 3 2322 4 10788 77 35 101 16 0 820 0 4 1604 7 4765 9 100 85 940 0 552 0 5 1248 2 2665 2 150 65 864 0 295 1 662 43 514 88 200 54 228 0 184 1 4 518 97 251 77 250 46 664 0 124 413 26 124 05 300 41 420 0 088 3 328 95 58 036 350 37 621 0 065 42 277 32 32 209 400 34 779 0 050 6 234 44 17 816 420 33 839 0 045 10 187 11 8 063 20 138 79 3 057 30 115 38 1 819 40 100 32 1 252 50 89 551 0 929 T K Ohms QIK 77 35 70 837 0 510 1 4 26566 48449 100 61 180 0 358 2 11844 11916 150 47 782 0 202 3 5733 4 3042 4 200 39 666 0 130 4 2 3507 2 1120 8 250 34 236 0 090 6 2252 9 432 14 300 30 392 0 065 10 1313 5 128 58 20 692 81 30 871 30 482 88 14 373 40 373 11 8 392 50 305 19 5 507 77 35 205 67 2 412 100 162 81 1 488 150 112 05 0 693 200 85 800 0 397 250 69 931 0 253 300 59 467 0 173 350 52 142 0 124 400 46 782 0 093 420 45 030 0 089 102 Cryo con Model 12 14 Temperature Monitor Appendix E Sensor Data Tables Ruthenium Oxide Cryo con R500 wY _ an The R500 Ruthenium Oxide temperature sensor is 42 meee designed pr
56. e desired channels and set an Interval value in Seconds The minimum interval is 0 1 Second 52 Cryo con Model 12 14 Temperature Monitor Cryo con Utility Software When the Start button is clicked a file selection dialog box will be shown From this dialog box enter a file name and select the directory where data logging results will be saved Cryo con Utility Software dloader wi File Comm Firmware Calibration Table PID Table View DataLogging Help Save As Save as type MSExcel Comma Separated Value Files css y Cancel P h As soon as the Save button is clicked the software will begin continuous data logging to the specified file While data logging is in progress a dialog box will be displayed that allows the user to stop logging When this Stop button is clicked logging is stopped and the log file is closed 53 Cryo con Model 12 14 Temperature Monitor Cryo con Utility Software Remote I O command HELP Help for the remote interfaces and remote commands is available by clicking on the HELP gt Contents button from the Utility Software s main menu A standard HELP screen will be shown that is indexed and searchable Cryo con Utility Software dloader File Comm Firmware Calibration Table PID Table View DataLogging Help Help Topics Cryocon Remote Interface Help Contents Index Find Click a topic and then click Display Or click another tab such as Index Remote Interface
57. e semicolon at the end of the line is assumed and is optional The lt gt and characters are for the illustration of the command syntax and not part of the command syntax Command Separators A colon is used to separate a command keyword from a lower level keyword You must insert a blank space to separate a parameter from a command keyword 69 Cryo con Model 12 14 Temperature Monitor Remote Programming Guide Compound Commands A semicolon is used as a terminator character that separates commands within the same subsystem For example sending the following command string INPut A UNITs K TEMPer has the same effect as sending the following two commands INPut A UNITs K INPut A TEMPer If multiple commands address different subsystems the combination of a semicolon and a colon are used The semi colon terminates the previous command and the colon indicates that the next command is in a different subsystem For example INPut A TEMPer LOOP 1 SETPt 123 45 has the effect of sending the following two commands INPut A TEMPer LOOP 1 SETPt 123 45 Queries You can query the current value of most parameters by adding a question mark to the command For example the following command set the setpoint on control loop 1 to 123 45 LOOP 1 SETPt 123 45 You can change it into a query that reads the setpoint by using the following LOOP 1 SETPt The instrument s response will be a
58. e transferred between the PC and the instrument by using the Calibration Table menu To download a curve send it from the PC to the instrument either select Sensor Curve Download from the shortcut bar or Operations gt Sensor Curve gt Download from the main menu This will cause a file selection dialog box to appear as follows Look in J Model 34 ex EE l aufeD cr crw pt1003902 crv 5 TCTypeT crw CryocalD3 crv PT1K375 crw curvel0 crw PT1K385 crv Curvell cry 5 51410 crw Es cx1030 1 crv Es TCTypeE crv PT100385 crv E TCTypek crv Files of type Curve Files crv 340 y Cancel Zs From this screen the desired calibration curve is selected Cryo con calibration curves have the file extension of CRV Lakeshore curves with the extension 340 may also be selected Scientific Instruments txt files may be downloaded by first selecting a file type of and then selecting the desired calibration curve file Cryo con CRV files are ASCII text files that may be edited by any text editor After selecting the file and clicking on Open the selected file will be read and the Edit Curve Header dialog box will appear This box contains information extracted from the curve file header that can be modified if desired before the curve is downloaded x Sensor Name TCAuFe pct Sensor Type reso gt Multiplier 1 Unit Volts Number of Pts 101 Sensor Name i
59. eeeeeeeeeeeeseeeeneeeeees 9 Table 7 PTC Resistor Sensor Configuration 10 Table 8 NTC Resistor Sensor Configuration cceeeseeseeeeeeeeeenneeees 11 Table 9 Sensor Input Connector PiNOUt oocccccccccccccccccccccnnnnnnnnnnnnannananoo 12 Table 10 Dual Sensor Cable Color Codes ccceceesseeeeeeeeetneeeeeeeeeeees 13 Table 11 Relay Connector PinOut cceeceeeseeeeeeeeeeeneeeeeeeeeeenneeeeeeeneerees 14 Table 12 RS 232 Connecti eeir EE a Eae cnn non corn 16 Table 13 AC Power Line FUSOS comiccoonininicconoiricn dcir acia 18 Table 14 Function Key Descriptions reesen eenen 22 Table 15 Temperature UnNitS oooocccccccnncnnnnccnononononcnnncnnnnnnnnnnnnnnnnnnnncnnnnnnos 23 Table 16 Model 12 14 Root MeNU cccccccnnconcccncccnanonnncnnccnnnnnncnnnnnnnnnnncnnnnnns 24 Table 17 Input Channel Setup MenUS ooooccccccccnncccncccccnncnnnnnnononaniccnnnonnnon 25 Table 18 Analog Output Setup MeNU oocccccccnncnnnnnnnonononnnnnnnccncnnnnnnnnnnnncccnnn 27 Table 19 Relay Setup MeNU ooooccccccnonocaccnoconnnonnccnnnnnnnan nc cnnn rana 27 Table 20 System Functions MeNU oooocccncnnnocccccncnonononnccnnnonnnn cnn nn nn nn 28 Table 21 Recommended Sensor Configuration Data ooooooocncnncnnnnnnnninccno 32 Table 22 Commonly Used Remote CoOMMAndS cooooooocccccccncconcciccconanancnnno 71 Index of Figures Figure 1 Input CONNECtOT ooccococccccccnccccncnnconnnonnncnnnnnnnnnnnnnnnnnnnnn nn nnnnnnnnnnnnnno 12 Figure 2
60. eip uniaan a ad il 87 Single Point Ground 37 Silicon Diode 4 5 9 10 12 37 55 63 64 87 89 Supported SONS Sia tii a Eaa 5 ThermMistorS Sit Aa 11 Technical ASSiStanCe indicio iii 3 KP HOO iii rides 4 Temperatue Units SelectiON oooonocinnnnnnicnnnccncconncccnnccnnannnno 25 A RO 4 Temperature SensOlS ooocccnccccnoccconoccnnonnconanonona conan nc nnncnnonnanannnnnns The Home Status DisSplay oooooconcccinocccinccconoccconaccnnnnnnananarnnnons 21 Garbo GlasS ci ja 5 11 thermocouple effectS oonoconccnnnnccinnnccnocccononccnnnrnnnnnnnnonncananannnnn 13 Carbon CeraMic econ are 11 Time Date in Aita 29 CO LA ci da 87 Utility Software cuicos aa Cerno Menine m a a veavaanasdevasiendbacs 5 9 11 32 89 ICO fomai inicia et twee shakes 45 CRA hoa a a a eG ete 4 89 CalGen nancial a 45 55 58 Calibration CUIVE cece eee eee teeeeeeeeeteeeteeees 45 48 50 CRV file 145 48 Curve AO imei lisina 48 Data Logging 44 45 52 Strip Chata ina dl els 51 GPAI OO cnica liinda iba 4 MED iia AA idad 21 NTC eSIStOl sinnini dada dane 11 Web DrOWS Olinda ia 41 65 66 Platinum RTD 2 4 5 13 63 81 89 90 Web OV nininini ities taeda PTIOK i ii lo 87 alarm Configuration c cccccceeeeeeeeeeeeseeeeeeeeeeeeeeeeeneaeee 42 PT Kona iii to casts sted 87 E O O 39 PTC Resistor S NSOM 0 c cceecceseseeeeeeeeteeeeeeeeeeeeeeeeeeaas 10 e mail CONfiguUratiON ooonnoccnnnncnnncccnnnccnnncccnnncnnnnrncnn
61. eneral Ambient Temperature 25 C 5 C for specified accuracy Mechanical 5 75 W x 2 875 H x 8 75 D Weight 3 Lbs Enclosure Aluminum Extrusion Machined Aluminum front and rear panels Power Requirement 100 120 or 200 240 VAC 50 or 60Hz 25 Watts Cryo con Model 12 14 Temperature Monitor Specifications Features and Functions Performance Summary Measurement Accuracy Diode Sensors The formulas for computing measurement accuracy while using diode sensors are MAV 6010 510 SenRdg MAV MAT SenSen Where MAV is the electronic Measurement Accuracy in Volts MAT is the Measurement Accuracy in Kelvin SenRdg is the sensor reading in Volts at the desired temperature SenSen is the sensor sensitivity in Volts Kelvin at the desired temperature For example if we want to calculate measurement accuracy using a Cryo con S900 sensor at 10K we would look up the sensor reading and sensitivity in the S900 data table in Appendix E At 10K we see that SenRdg is 1 36317 Volts and SenSen is 0 002604 Volts Kelvin Therefore MAV 60 10 5 10 1 36317 and _ MAV 0 002604 The result is that MAV 128uV and MAT 49mK PTC Resistor Sensors RTDs The formulas for PTC resistor sensor in the PTC100 range are Where MAR 0 002 1 010 E Sen Val MAR is the electronic Measurement Accuracy in Ohms MAT is the Measurement Accuracy in Kelvin SenRdg is the sensor reading in Ohms at the desired
62. er ee ee 19 O er ee te nec onion ren eRe or etree 15 ESE naci 72 73 76 ES O En Te acento 72 76 Instrument Status Enable oooonnccincnnnconicononccccnnaacccninnnnno 72 Instrument Status Register ooooonccccncccnnncccnocccccccccanannnnnno 72 SEN wea dine E 72 73 ISReas gt crite cape tests atten oe et ence eet eet as 72 73 OPC command aeren as aae ar aa a ad 76 RS Femmans E RE E 76 Standard Event Register ccccceesseesseeeeeteeseneeeeeees 72 Standard Event Status Enable eee 76 Factory DefaullS cacon cit 2 66 POSO Ni ee a a a hee 23 29 66 MO WA tn ee Bae aed revision l6Veli iectiee eles avi Ahn a ated 3 TUSC essai reese la en bind le A 17 Fuse Replacement c ccccccceceeceeeeeeeeeeeeeeeaeeeeeeeeeaeeeseeeeeenaee 18 hardware revision leVel cccceeceeeeeeeeeeeeeeeeeneeeeeeeeeeeeeeeeeeeaee 3 AAA te Maca ee ante vee 15 input channielSsi0 case eee cies rd aon 9 SENSO r ie AN ee A Alle CONNEC CH ON E 12 constant voltage excitation eneee 10 current excitations comic 10 fault ok a a e tee 23 A E E ATE E ae 25 self heating semien e TO ie 10 LPO iin Wi waa A AI iia 25 Cryo con Model 12 14 Temperature Monitor INDEX UNITS stitial eA eke dial iii 11 23 25 S700 OA 4 87 89 Sensor Calibration Curve c ccc cece eee eeeeeeeeeeeeeneeseneeeees 81 SOOO Heit lcd 87 89 Sensor Calibration Curve ZA S900 4 87 89 file format 81 SIANO
63. erating e Do not operate the instrument in the presence of flammable gases or fumes Operation of any electrical instrument in such an environment is a definite safety hazard 20 Cryo con Model 12 14 Temperature Monitor The User Interface The User Interface Overview The Model 12 14 Cryogenic Temperature monitor s user interface consists of a four line by 20 character Vacuum Fluorescent display and a five key keypad Most features and functions of the instrument can be accessed via this simple and intuitive menu driven interface Complex functions such as downloading a new sensor calibration curve require using one of the remote interfaces ERsgoO cor 12 temperature Monitor Figure 6 Model 12 14 Front Panel The Home Status Display At the root of the instrument s menu tree is the basic Home Status Display This screen shows status information only The Home Status display has three user selectable formats as follows 1 A four line format that shows the current temperature on all four input channels plus any alarm conditions Displayed text is 5mm high Note that the channel name displayed is defined by the user The factory default of Channel A etc is shown nere 323 455K 2 A two line format that displays input channels A and Bina 123 465K large 10mm high format gt 93 152K 63 123K 3 A two line format that displays input channels C and Dina large 10mm high format The displa
64. ffectively cancels the DC drift and electronic noise associated with the internal voltage reference and constant current source circuitry Constant Voltage Sensor Excitation A unique feature of the Model 12 14 is the constant voltage excitation mode where current applied to the sensor is autoranged in order to maintain a constant RMS voltage level across the sensor A constant voltage excitation is necessary since the resistance thermometers used below about 10K exhibit a negative temperature coefficient Therefore a constant voltage measurement will reduce the power dissipation in the sensor as temperature decreases By maintaining a low power levels sensor self heating errors that occur at very low temperatures are minimized In the constant voltage mode sensor excitation is a 1 25Hz bipolar square wave This provides DC offset cancellation without loss of signal energy Silicon Diode Sensors Silicon Diode sensors 2 volt diodes are configured with a 10uA DC current source excitation and a 2 5 Volt unipolar input voltage range Gallium Arsenide Diode Sensors Gallium Arsenide Diodes or 6 Volt Diodes can be used down to a minimum temperature of about 25K This limitation is imposed by the fact that the instrument s maximum input voltage is 2 25 Volts Gallium Arsenide sensors do not fit standard calibration curves therefore the user must provide a sensor specific curve before using this type sensor To use diodes Gallium Arsenide
65. gether This way the thermocouple junctions formed by the connection will have equal but opposite voltages and will cancel each other Frequently sensor leads are made from the same material as the cryostat wires Therefore there is no significant thermocouple formed by this connection In a four wire measurement scheme only connections in the voltage sense lines can cause measurement errors So the sense wires should have adjacent contacts in a multi pin connector in order to minimize any temperature difference between them Cryo con Model 12 14 Temperature Monitor Specifications Features and Functions AC Excitation When a sensor type of ACR or AC Resistance is selected the Model 12 14 uses a 1 25Hz square wave sensor excitation This eliminates DC offsets by computing the sensor resistance at two different excitation points Output Channel Features Alarm Outputs Alarm outputs include a LED indicator and an on screen display Alarms may be asserted based on high or low temperature conditions There is a 0 25K hysteresis built into the high and low temperature alarms Analog Output The Model 12 14 has a zero to 4 096 Volt analog output that can be scaled to the current temperature reading on any selected input channel The Analog output has an output impedance of 600 Ohms The formula used to scale the output voltage is Output Temperature Offset x Gain Relay Outputs There are two auxiliary dry contact re
66. gister The Standard Event Register ESR is defined by the SCPI to identify various standard events and error conditions It is queried using the Common Command ESR This register is often used to generate an interrupt packet or service request when various l O errors occur Bits in the ESR are defined as follows ESR Where Bit7 OPC Indicates Operation Complete Bit5 QE Indicates a Query Error This bit is set when a syntax error has occurred on a remote query It is often used for debugging Bit4 DE Indicates a Device Error Bit3 EE Indicates an Execution Error This bit is set when a valid command was received but could not be executed An example is attempting to edit a factory supplied calibration table Bit2 CE Indicates a Command Error This bit is set when a syntax error was detected in a remote command Bit0 PWR Indicates power is on The Standard Event Enable Register The Standard Event Enable Register ESE is defined by the SCPI as a mask register for the ESR defined above It is set and queried using the Common Command ESE Bits in this register map to the bits of the ESR The logical AND of the ESR and ESE registers sets the Standard Event register in the Status Byte STB 72 Cryo con Model 12 14 Temperature Monitor Remote Programming Guide The Status Byte The Status Byte STB is defined by the SCPI and is used to collect individual status bits from the ESE
67. he instrument and the host controller Curves are referenced by an index number In the Model 112 14 there are eight user curves numbered 1 through 8 The CALCUR data block consists of many lines of ASCII text The format is the same as the file format for user calibration curves which is detailed in the section User Calibration Curve File Format CALCUR lt index gt Sets or queries sensor calibration curve data Uses a fragmented message protocol to sens many lines of ASCII text to the instrument Note It is much easier to use Cryo con s Utility Software to send and receive sensor calibration curves 81 Cryo con Model 12 14 Temperature Monitor Remote Programming Guide Network Commands The following commands are used to configure the Model 12 14 s Ethernet interface NETWork IPADdress IPA Sets or queries the instrument s IP address The address is expressed as an ASCII string so the input parameter must be enclosed in quotes For example the default IP address parameter is 192 168 0 4 NETWork MACADdress Queries the instrument s MAC address The address is returned as an ASCII string Cryo con MAC addresses range from 00 50 C2 6F 40 00 to 00 50 C2 6F 4f ff They cannot be changed by the user Mail Commands The Model 12 14 can send e mail over the Ethernet port when an alarm condition is asserted on an enabled input channel The following remote commands are used to configure e mail However it i
68. iest to test commands by using the Cryo con utility software Run the program connect to the instrument and use the Interact mode to send commands and view the response 4 For ease of software development keywords in all SCPI commands may be shortened The short form of a keyword is the first four characters of the word except if the last character is a vowel If so the truncated form is the first three characters of the word Some examples are inp for input syst for system alar for alarm etc 73 Cryo con Model 12 14 Temperature Monitor Remote Programming Guide Remote Command Tree SYSTem DISTc 0 5 1 2 4 8 16 32 64 SYSTem RESeed SYSTem HWRev SYSTem FWREV SYSTem DRES FULL 1 2 3 SYSTem SSENa YES NO SYSTem SSTimer 5 10 15 20 25 30 SYSTem BAUD 9600 19200 38400 57200 INPut A B C D or INPut A B C D TEMPerature INPut A B C D UNITs K C F S INPut A B C D NAMe Instrument Name INPut A B C D SENPr INPut A B C D ISENix lt ix gt INPut A B C D USENix lt ix gt INPut A B C D ALARm INPut A B C D ALARm HIGHest lt setpt gt INPut A B C D ALARm LOWEst lt setpt gt INPut A B C D ALARm HIENa YES NO INPut A B C D ALARm LOENa YES NO INPut A B C D VBIAs 1 0V 10mV 1 0mV AOUT SOURCcet A B C D AOUT ENABle YES NO AOUT GAIN lt ga
69. imarily for ultra low temperature E ES ae operation Features include interchangeability and Y EA A operation in high magnetic fields 20 938 93 46 553 30 629 90 20 613 The Model 12 14 using 10mV or 1 0mV Constant 40 474 89 11 663 Voltage AC excitation will operate with the R500 50 381 42 7 490 down to 500mK 77 35 248 66 3 150 Shaded entries are outside of the Model 12 14 s 100 193 29 1 899 temperature range 150 129 60 0 854 250 78 723 0 299 T K Ohms QK S oo 2 201 0 05 29072 628083 350 3 999 0 143 0 1 13114 145658 400 51 815 0 106 02 6996 30943 420 49 819 0 094 03 5053 13345 0 5 3503 4760 1 2327 1203 T K Ohms Qik 2 1723 343 5 20 6157 5 480 08 3 1508 152 4 30 3319 7 165 61 4 2 1378 80 4 40 2167 6 79 551 6 1277 40 9 50 1565 3 45 401 10 1178 15 4 77 35 836 52 15 398 20 1101 4 08 100 581 14 8 213 30 1053 4 0 150 328 75 3 057 40 1009 3 5 200 220 93 1 506 250 163 73 0 863 300 129 39 0 545 350 106 98 0 368 400 91 463 0 261 420 86 550 0 231 103 Cryo con Model 12 14 Temperature Monitor Appendix E Sensor Data Tables Cryo con R400 The R400 Ruthenium Oxide temperature sensor is designed for operation between 2 0K and 273K with high sensitivity below 40K They feature Shaded entries are outside of the Model 12 14 s temperature range in
70. ime Protocol allows a client to obtain the date and time from a host TIMEP server If a time server is available on the Local Area Network the Model 12 14 will periodically query it to update it s internal clock TCP IP The Transmission Control Protocol Internet Protocol provides reliable flow controlled end to end communication between two machines TCP operates even if datagrams are delayed duplicated lost delivered out of order or delivered with corrupted or truncated data TCP IP uses port numbers to identify the many application protocols that can run over it In the Model 12 14 a TCP IP port is available for communication using an ASCII command language This is how the instrument interfaces to data acquisition software including LabView Ethernet IP Configuration Each device on an Ethernet Local Area Network must have a unique IP Address This is similar to IEEE 488 systems where each device required a unique GPIB address Further the address assigned to the Model 12 14 must be within the range of the computers you want it to communicate with The range is determined by the Subnet Mask The Model 12 14 is shipped with a default IP address of 192 168 0 4 and Subnet Mask of 255 255 255 0 You can configure the Model 12 14 to use any IP address from the front panel by going to the Network Configuration Menu Alternatively You can configure your PC s Network connection with an IP address that is in the sam
71. in gt AOUT OFFSET lt offset gt RELays 0 1 RELays 0 1 SOURce A B C D RELays 0 1 HIGHest lt setpt gt RELays 0 1 LOWEST lt setpt gt RELays 0 1 HIENa YES NO RELays 0 1 LOENa YES NO CALcur 74 Cryo con Model 12 14 Temperature Monitor Remote Programming Guide DLOG RUN OFF ON DLOG TIMe lt Seconds gt DLOG COUNt DLOG READ DLOG RESET DLOG CLEAR NETWork IPADdress NETWork MACaddress MAIL A B C D ADDR IPA MAIL A B C D FROM from e mail address MAIL A B C D DEST to e mail address MAIL A B C D PORT lt port number gt MAIL A B C D STATE ON OFF CLS ESE ESR OPC IDN RST SRE STB 75 Cryo con Model 12 14 Temperature Monitor Remote Programming Guide Remote Command Descriptions IEEE Common Commands CLS The CLS common command clears the status data structures including the device error queue and the MAV Message Available bit ESE The ESE command sets the Standard Event Status Enable ESE Register bits The ESE Register contains a bit mask for the bits to be enabled in the Standard Event Status SEV Register A one in the ESE register will enable the corresponding bit in the SEV register A zero will disable the bit The ESE Query returns the current contents of the ESE register ESR The ESR query returns the contents of
72. inear curves In this case the use of Logohm units will give a more linear curve and will provide better interpolation accuracy Logohm is the base 10 logarithm of Ohms Examples of sensor calibration curves that are in units of Ohms include Platinum RTDs and Rhodium lron RTDs Examples of sensors that best use Logohm include Cernox Ruthenium Oxide and Carbon Ceramic After the header block there are from two to 200 lines of sensor calibration data points Each point of a curve contains a sensor reading and the corresponding temperature Sensor readings are in units specified by the units line in the curve header Temperature is always in Kelvin The format of an entry is lt sensor reading gt lt Temperature gt Where lt sensor reading gt is a floating point sensor reading and lt Temperature gt is a floating point temperature in Kelvin Numbers are separated by one or more white spaces Floating point numbers may be entered with many significant digits They will be converted to 32 bit floating point which supports about six significant digits The last entry of a table is indicated by a semicolon character with no characters on the line NOTE All curves must have a minimum of two entries and a maximum of 200 entries Entries may be sent to the instrument in any order The instrument will sort the curve in ascending order of sensor reading before it is copied to Flash RAM Entries containing invalid numeric
73. iode ds excitation Cryocon S800 Cryo con S800 series Silicon Diode Range 1 4 to 500K 10uA constant current excitation 7 Cryocon S900 Cryo con S900 series Silicon Diode Range 1 4 to 500K 10uA constant current excitation MEM CTI Si Diode CTI silicon Diode Range 10K to 320K DIN43760 standard 1000 Platinum RTD Range 23 to 873K 1mA Pt100 385 ee excitation PHK 385 1000Q at 0 C Platinum RTD using DIN43760 standard calibration curve Range 23 to 1023K 1001A excitation PHOK 385 10KQ at 0 C Platinum RTD Temperature coefficient 0 00385 Range 23 to 873K 10uA excitation 23 RhFe27 1mA__ Rhodium Iron 270 at 0 C 1mA DC excitation 1 5 to 873K SI RO 600 Ruthenium Oxide sensor Constant voltage AC excitation RO 600 200mK to 273K Recommended bias voltage is 10mV above 1 0K and 1 0mV below 1 0K RO 105 SI RO 105 with constant voltage AC excitation 2 to 273K A Bias voltage of 1 0VAC is recommended for best performance SI RO 600 Ruthenium Oxide sensor Constant voltage AC excitation Cryocon R500 200mK to 273K Recommended bias voltage is 10mV above 1 0K and 1 0mV below 1 0K Cryocon R400 Cryo con R400 with constant voltage AC excitation 2 to 273K A Bias y voltage of 1 0VAC is recommended for best performance The isenix remote command is used to set factory installed sensors For example the command INPUT B ISENIX 31 would set input B to use the RO 600 sensor INPUT A ISENIX 1 would set input A to use the S700 Diode INP
74. ion Page The Resolution filed is used to select the number of significant digits to the right of the decimal point for all temperature displays Choices are 1 2 3 or Full Selection of Full will left justify temperature displays for the maximum display width Time constant is an averaging filter that can be applied to temperature displays It is in units of seconds The internal data logging capability can be configured from the Data Logging form When enabled internal logging will proceed continuously at the selected interval 44 Cryo con Model 12 14 Temperature Monitor Cryo con Utility Software Cryo con Utility Software Cryo con provides a PC compatible utility software package with all instruments This is available on CD or on the Internet Utility software can be used to control and configure any Cryo con instrument via the RS 232 or LAN interface It runs under all versions of the Windows operating system This software provides several useful functions including 1 Real time strip charts of temperature 2 Data Logging This function allows the user to record data from the instrument at a specified sample rate The resulting file is compatible with most spreadsheet and data analysis software 3 Download or upload sensor calibration curves The software will accept curves in Cryo con CRV Lakeshore 340 or Scientific Instrument s txt format In fact it will read almost any table of temperature vs sensor units
75. is the upper target and LT is the lower target UM is the upper measurement and LM is the lower measurement Gain values greater than 1 2 or less than 0 8 are rejected as out of range Offset is in units of Volts or Ohms depending on the calibration type Nominal value is 0 0 Positive or negative numbers are accepted It is usually calculated by Offset UT gain UM Automatic Calibration Automatic calibration uses the left hand side of the calibration screen and is a four step process 1 Line 1 requires setting a upper target value on the input channel Depending on the calibration range selected this will be in Volts or Ohms First establish a voltage or resistance on the selected input channel that is near the recommended value Then enter the actual value in the box provided 2 Click the Capture button on Line 2 The software will wait for the reading to stabilize and then will capture the reading and display it in the edit box on Line 2 While waiting for a stable reading the following dialog box will be displayed Capturing Data in Progress Capturing input data from instrument Wait for the process to complete Press the Abort button to terminate the process When the capture is complete dismiss the following dialog 3 Line 3 requires setting a lower target value on the input channel Depending on the calibration range selected this will be in Volts or Ohms First establish a voltage or resistance on the selected in
76. ized modification or misuse operation outside of the environmental specifications for the product or improper site preparation or maintenance The design and implementation of any circuit on this product is the sole responsibility of the Buyer Cryo con does not warrant the Buyer s circuitry or malfunctions of this product that result from the Buyer s circuitry In addition Cryo con does not warrant any damage that occurs as a result of the Buyer s circuit or any defects that result from Buyer supplied products Notice The information contained in this document is subject to change without notice Cryo con makes no warranty of any kind with regard to this material including but not limited to the implied warranties of merchantability and fitness for a particular purpose Cryo con shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performance or use of this material No part of this document may be photocopied reproduced electronically transferred or translated to another language without prior written consent Trademark Acknowledgement CalGen and Cryo Con are registered trademarks of Cryogenic Control Systems Inc All other product and company names are trademarks or trade names of their respective companies Safety The Model 12 14 does not contain any user serviceable parts Do not open the enclosure Do not install substitute parts or pe
77. l 12 14 Temperature Monitor Appendix C Enclosure Options Instrument Stand The Instrument Stand accessory Cryo con part number 4012 021 is used to mount the Model 12 14 on a bench top It tilts the instrument up by 15 for an improved viewing angle 98 Cryo con Model 12 14 Temperature Monitor Appendix E Sensor Data Tables Appendix E Sensor Data Tables Silicon Diode Silicon diode sensors offer good sensitivity over a wide temperature range and are reasonably interchangeable Use in magnetic fields is not recommended Silicon diode sensors use a constant current DC excitation of 10uA T K Volts 1 4 1 63864 36 56 4 2 1 53960 33 91 10 1 36317 26 04 20 1 17370 11 34 30 1 10343 3 12 50 1 07399 1 46 77 35 1 02511 1 69 100 0 98740 1 85 150 0 89011 2 03 200 0 78272 2 17 250 0 67085 2 28 300 0 55665 2 36 355 0 42759 2 33 400 0 32161 2 38 450 0 20231 2 37 500 0 09077 2 12 T K Volts mV K 1 4 1 87515 36 86 4 2 1 75099 49 16 10 1 47130 43 45 20 1 18867 15 93 30 1 10594 3 90 50 1 07079 1 47 77 35 1 02356 1 86 100 0 98170 1 85 150 0 88365 2 03 200 0 77887 2 13 250 0 67067 2 20 300 0 55955 2 22 355 0 44124 2 10 385 0 37611 2 26 mV K T
78. l continue until stopped When the input buffer is full new samples will over write the oldest samples Reading the Data Log Buffer Reading or uploading the Model 12 14 data logging buffer is best done using the Cryo con Utility Software Launch the software and connect to the instrument Next click on the Data Logging menu field and then click on Upload This will launch a series of dialog boxes that will take you through the data logging process Note The Cryo con Utility software can perform data logging by continuously reading samples from a connected instrument This is a different function than uploading the internal log buffer from the instrument The internal data logging function does not require a connection to a computer 34 Cryo con Model 12 14 Temperature Monitor Basic Operating Procedures Using the Analog Output Channel The Model 12 14 has a single analog output channel that can be controlled by any of the input channels The output goes from zero to 4 096 Volts and is scaled to the temperature reading on the selected source input channel The output impedance of the analog output is 600Q Computing Offset and Gain To scale an input temperature to an output voltage the following formula is used Output Temperature Offset x Gain So If we want to map 0 to 4 096V into the temperature range of 2 to 300K we have two equations and two unknowns as follows 0 gain 2 offset 4 09
79. lay indicating that defaults have been restored The Input Channel Temperature Displays An Input Channel Temperature Display consists of the input channel designator a Temperature reading and the temperature units The input channel designator is a superscripted A B C or D An input channel may also have a name that may be set by the user On the Home Status display only the first nine characters are displayed The temperature is a seven character field and is affected by the Display Resolution setting in the system menu This setting will be 1 2 3 or Full Settings of 1 2 or 3 indicate the number of digits to the right of the decimal point to display gt whereas the Full setting causes the display to be left justified in order Fahrenheit to display the maximum number of significant digits possible If the Input Channel has been disabled a blank display is shown Temperature units are selected in the individual input channel setup menus Temperature Units may be K C or F When Sensor Units S Table 15 Temperature Units is selected the raw input readings are displayed These will be in Volts or Ohms Sensor Fault Condition A sensor fault condition is identified by a temperature display of seven dash characters as shown here The sensor is open disconnected or shorted Reading Out of Range Condition If a temperature reading is within the measurement range of the instrument but is not within the specified Sensor C
80. lay outputs available on the rear panel They may be independently asserted upon a high or low temperature condition on any selected input channel Normally open contacts are available at the rear panel Contact ratings are 1 Amp 24VDC There is a 0 25K hysteresis built into the high and low temperatures Analog Output and Relay Connections Rear panel Analog Output and Relay connections are made using the six pin pluggable 3 5mm terminal block provided Pins are defined as shown in the table The six pin terminal block plug is a Weidmuller part number 161018 It is available from Digikey Inc 281 1057 ND or directly from Cryo con 04 0302 The Analog Output of the Model 12 14 will output zero to 4 096 Volts and 3 Relay1NO has a 1000 Ohm output impedance Connections are made using pins 1 4 Relay 1 Common and 2 Pin One of this block left hand pin is the positive output and Pin 5 Reaino Two is the ground return The shield of the output cable may be connected to Pin Two 6 Relay 2 Common Both relays are dry contact Normally open contacts are available on the terminal block These contacts are open and close when the Table 11 Relay Connector Pinout relay is energized Contact ratings are 1 Ampere at 30 VDC 14 Cryo con Model 12 14 Temperature Monitor Specifications Features and Functions Remote Interfaces 10 BaseT Ethernet and RS 232 interfaces are standard on the Model 12 14 All functions and
81. measured data any errors in the instrument s measurement electronics are also effectively cancelled CalGen Initial Setup To start the CalGen process either select CalGen from the shortcut bar or select Operations gt CalGen from the main menu This will initiate the process of generating a new sensor curve Using CalGen With Diode Sensors Options for generating Diode calibration curves are 1 One point near 300K The portion of a Diode Sensor curve above 30K will be fit to a user specified point near 300K This is a two point fit where the 30K point is taken from the existing calibration curve The portion of the curve below 30K is unaffected 2 Two points 300K and 77K Here two user specified points are taken to fit the diode curve region above 30K The entire curve is offset to match the 77K point then the gt 30K region is fit to the two points 3 Three points 300K 77K and 4 2K Two points above 30K are fit as in the selection above Then a third point is used to fit a single point in the high sensitivity region below 20K 4 One point near 4 2K This is a two point fit where the 20K point is taken from the existing calibration curve The portion of the curve above 20K is unaffected Using CalGen With Resistor Sensors The calibration curve generation procedure for Platinum or other resistor sensors is the same as for the diode However these sensor curves are generated using two user specified points Therefor
82. mitive sensor units In the case of sensor units the instrument will determine if the actual units are Volts or Ohms based on the actual sensor type INPut A B C D SENPr The INPUT SENPR query reports the reading on a selected input channel For diode sensors the reading is in Volts while resistor sensors are reported in Ohms The reading is not filtered by the display time constant filter However the synchronous input filter has been applied Query only INPut A B C D ISENix lt ix gt Sets or queries the sensor index number assigned to an input channel for FACTORY installed sensors For user installed sensors use to the USENIX command below A sensor index lt ix gt is taken from a table A sensor index of zero indicates that there is no sensor connected Refer to Appendix A in the User s Manual for the sensor index table and a complete description of sensors and indexing Note The use of the ISENIX command to assign a factory installed sensor and the USENIX command to assign a user sensor are preferred to the use of the obsolete SENIX command The SENTYPE command may be used to query the name of a factory installed sensor at a specific index INPut A B C D USENix lt ix gt Sets or queries the sensor index number assigned to an input channel for USER installed sensors For factory installed senssors use the ISENIX command described above An index number of 0 through 7 indicates user sensor
83. monitor with four standard multi function sensor input channels set for AC power line voltages from 100 to 120VAC Model 14 220 Cryogenic temperature monitor with four standard multi function sensor input channels set for AC power line voltages from 200 to 220VAC Table 1 Model Identification Supplied Items Verify that you have received the following items with your monitor If anything is missing contact Cryogenic Control Systems Inc directly a Model 12 or 14 Cryogenic Temperature Monitor User s Manual PN 3038 029 Cryo con software CD PN 4034 029 Two dual input connector cable assemblies 4034 038 Relay Aout connector 6 pin terminal block plug 04 0302 O oO oO o O Certificate of Calibration Verify the AC Power Line Voltage Selection The AC power line voltage is set to the proper value for your country when the instrument is shipped from the factory This setting is marked on the rear panel just above the AC Power Entry module AC power line voltage setting is made by internal component selection Refer to the section on AC Line Voltage Selection for details Apply Power to the Monitor Connect the power cord and turn the monitor on by switching the power switch on the rear panel to the 1 position The front panel will show a Power Up display with the model number and firmware revision While the Power Up display is shown the monitor is performing a self test procedure that verifies the proper Cry
84. n DIODE PTC100 PT1K PT10K ACR Multiplier Signed numeric Units Units of calibration curve OHMS VOLTS LOGOHM The Sensor Name string can be up to 15 characters and is used to identify the individual sensor curve When downloaded to a Cryo con instrument this name will appear in the sensor selection menu of the embedded web server and will appear on all sensor selection fields on the front panel The Sensor Type Enumeration identifies the required input configuration of the input channel For the Model 14 12 selections are DIODE PTC100 PTC1K PTC10K and ACR These configurations are described in the section titled Input Configurations The Multiplier field is a signed decimal number that identifies the sensor s temperature coefficient and curve multiplier Generally for Negative Temperature Coefficient NTC sensors the value of the multiplier is 1 0 and for a Positive Temperature Coefficient PTC sensor the value is 1 0 As an advanced function the multiplier field can be used as a multiplier for the entire calibration curve For example a 10KQ Platinum RTD can use a calibration curve for a 100Q Platinum RTD by using a multiplier of 100 0 The fourth line of the header is the sensor units field This may be Volts Ohms or Logohm Generally Diode type sensor curves will be in units of Volts and most resistance sensors will be in units of Ohms However many resistance sensors used at low temperature have highly nonl
85. n Parameters These are used to set values that have a limited number of choices Query responses will always return an enumeration parameter in upper case letters Some examples of commands with enumeration parameters are INPut A B C D UNITs K C F LOOP 1 2 TYPe OFF MAN PID TABLE RAMPP String Parameters String parameters can be up to 15 characters in length and can contain any ASCII characters excluding the double quote String parameters must be enclosed in double quotes For example CONFig 4 NAMe Cold Plate Commonly Used Commands A complete summary of remote commands is given in the User s Manual chapter titled Remote Command Summary The manual also has complete descriptions of all remote commands This section is intended to show a few of the more commonly used commands Function Command Comment Instrument Identification Returns the instrument identification string in IEEE 488 2 format For idn example Cryo con Model 32 204683 2 41 identifies the manufacturer followed by the model name serial number and firmware revision code Read the instrument identification string Input Channel Commands Parameter for the input is A B C or D corresponding to inputs A B C or D Read the temperature on input channel B Temperature is returned in the current display units Format is a numeric i 2 input b string For example 123 4567 Choices are K
86. near that significant might result The graph should be checked for reasonableness and then dismissed You may now proceed with downloading the curve to the instrument Once complete you will want to check and verify the result The curve may be uploaded from the instrument by using the Operations gt Sensor Curve gt Upload function of the utility software Or it may be manually checked from the instrument s front panel by pressing the Sensors key Using the Screen Saver The screen saver mode in the Model 12 14 will significantly extend the life of the front panel VFD display and lower the operating temperature of the instrument Using it is strongly recommended Function When the screen saver is enabled the instrument will go into screen save mode after a selected timeout In the save mode the display will be blank for five seconds and then will flash the model number on the display for one second The screen save mode only affects the front panel display All other processing continues as normal The Front panel LEDs remote ports etc function normally When an alarm condition is asserted the unit will exit screen save mode Screen save mode can be canceled by pressing any key on the front panel Configuration The screen save mode is configured by going to the System Setup Menu Here the mode can be enabled or disabled Further a timeout may be set 33 Cryo con Model 12 14 Temperature Monitor Basic Operating Procedures
87. nnot be calibrated from the front panel Calibration data is stored in the instrument s non volatile memory and is accessed only via the remote interfaces Calibration of a measurement range is the simple process of generating an offset and gain value However since there are several input ranges available on each sensor input the process can be time consuming Caution Any calibration procedure will require the adjustment of internal data that can significantly affect the accuracy of the instrument Failure to completely follow the instructions in this chapter may result in degraded instrument performance The Cryo con utility software used in this procedure will first read all calibration data out of the instrument before any modifications It is good practice to record these values for future reference and backup Cryo con Calibration Services When the instrument is due for calibration contact Cryo con for low cost recalibration The Model 12 14 is supported on our automated calibration systems which allow Cryo con to provide this service at competitive prices Calibration Interval The Model 12 14 should be calibrated on a regular interval determined by the measurement accuracy requirements of your application A 90 day interval is recommended for the most demanding applications while a 1 year or 2 year interval may be adequate for less demanding applications Cryo con does not recommend extending calibration intervals beyond
88. nrn nana 41 RADO ita Aia 4 87 Inputs Pagere enana a a a E 42 R500 it ade ie 4 87 Network Configuration ccccecceeeseeeeeeeeeneeeteeeees 40 41 RROdIUM IPON ceeeeeeeeeeeeeeeeeeeeeeeeeeneeeee 5 10 87 89 90 OUTPUTSiPaQes fo eters cee tented went te 43 CENA 43 relay Status ti id 39 Status Page 39 Systemi PAS ii bd 44 106
89. numeric string such as 123 45 Compound queries are commonly used to save programming steps For example the query LOOP 1 SETPt PGAin IGAin DGAin reports the loop 1 setpoint P gain I gain and D gain An example response is 123 45 20 0 60 12 5 Note that the response is also separated by semicolons The representation of the decimal symbol for floating point numbers must be a period instead of comma as is customary used in some European countries Command Terminators The termination of a command line is determined by the type of interface being used SCPI Common Commands The IEEE 488 2 SCPI standard defines a set of common commands that perform basic functions like reset self test and status reporting Note that they are called common commands because they must be common to all SCPI compliant instruments not because they are commonly used Common commands always begin with an asterisk are four to five characters in length and may include one or more parameters Examples are IDN CLS OPC 70 Cryo con Model 12 14 Temperature Monitor Remote Programming Guide SCPI Parameter Types The SCPI language defines several different data formats to be used in program messages and response messages Numeric Parameters Commands that require numeric parameters will accept all commonly used decimal representations of numbers including optional signs decimal points and scientific notation Enumeratio
90. o con Model 14 function of internal data and program memories remote Firmware Rev 2 20C interfaces and input channels If an error is detected IP 192 168 0 4 during this process the monitor will freeze operation with an error message display In this case turn the unit off and refer to Appendix B Troubleshooting Guide Cryo con Model 12 14 Temperature Monitor Preparing the Monitor for Use Caution Do not remove the instrument s cover or attempt to repair the monitor Other than the AC line voltage selection jumpers there are no user serviceable parts jumpers or switches inside the unit Further there are no software ROM chips trim pots batteries or battery backed memories All firmware installation and instrument calibration functions are performed externally via the remote interfaces After about ten seconds the self test will complete and the monitor will begin normal operation NOTE The Model 12 14 attempts to connect with the Ethernet as soon as power is applied If there is a valid Ethernet connection the power up sequence is immediate However if there is no connection the Model 12 14 will delay about 10 seconds before showing the power up screen Factory Default Setup A monitor with factory default settings will have an operational display like the one shown here The dash or dot characters indicate that there is no sensor connected Note that in some cases there will be an e
91. onnectors If you wish to connect directly to a PC use a Category 5 Crossover type patch cable The PC may need to be configured to be on the same LAN segment as the Model 12 14 This is done by modifying the TCP IP settings in the PC to have an IP of 192 168 0 xxx where lt xxx gt is in the range of 0 to 255 excluding 4 The Model 12 14 address Once connected you may change the network configuration of the Model 12 14 to have any desired values NOTE The Model 12 14 network configuration parameters may be reset to the factory default values by executing the LAN Reset sequence from the front panel This will restore the IP address to 192 168 0 4 as well as other network settings TCP Data Socket Configuration In order to communicate with the Model 12 14 in the SCPI command language you must configure a TCP data socket application in your PC using remote port 5000 This will allow you to communicate with the Model 12 14 in the same ASCII command language as the RS 232 port 66 Cryo con Model 12 14 Temperature Monitor Remote Operation RS 232 Configuration The user can select RS 232 Baud Rates between 300 and 38 400 The factory default is 9600 The Baud Rate can be changed from the instrument s front panel by using the System Setup Menu Other RS 232 communications parameters are fixed in the instrument They are set as follows Parity None Bits 8 Stop Bits 1 Mode Half Duplex The RS 2
92. onvenient calculator that will compute the temperature of various cryogens from the current barometric pressure Once the dialog box has been completed click OK to proceed To finish the process you will be prompted to save the modified calibration curve to a file Once complete the file can be transferred to any Cryo con instrument 57 Cryo con Model 12 14 Temperature Monitor Cryo con Utility Software The Vapor Pressure Calculator The Vapor Pressure Calculator is a convenient aid that computes the actual temperature of most cryogens given the current barometric pressure It can be launched directly off of the utility disk by executing Vapor Pressure Calculator exe or from the CalGen dialog as shown above A typical calculation is shown here apor Pressure Calculator 373 1521 You must select the Substance from a drop down list and then select the barometric pressure and temperature units Substance selections are shown here Vapor Pressure Calculator Heliurn 4 Ko pS 373 1621 58 Cryo con Model 12 14 Temperature Monitor Instrument Calibration Instrument Calibration Calibration of the Model 12 14 requires the use of various voltage and resistance standards in order to generate calibration factors for the many measurement ranges available Calibration is Closed Case There are no internal mechanical adjustments required The Model 12 14 ca
93. or The format of the file is detailed in Appendix A The process for downloading a sensor calibration curve using the Cryo con utility software is detailed in the section titled Downloading or Uploading a Sensor Calibration Curve This section discusses setting up a curve specifically for download to the Model 12 14 31 Cryo con Model 12 14 Temperature Monitor Basic Operating Procedures The Cryo con utility software will read and attempt to parse the following file types Sensor Curve File Types Supported Reads curve data Header information must be entered by using Lakeshore 340 the header dialog box The Cryo con utility software will convert these files into crv format automatically No header information Columns are reversed from other formats Must be manually converted to a crv file before use Software will attempt to parse any text file If the file contains columns of sensor readings vs temperature the entries will be properly parsed and the curve can be used or converted to a crv file after the header dialog box is filled out In order to download a file run the utility software and select Sensor Curve Download You will be prompted to select a file Once the software has read the file the header information dialog box will appear J Sensor Name R400 RuOx 12345 Sensor Type jACR X Multiplier 1 Unit LogOhms Number of Pts 104 Here the Sensor Name can be any string up to 15 charac
94. ounding scheme is working effectively 1 Make sure that the sensors are floating 2 Make sure that the input cable shields are connected to the connector s metal backshell 3 Make sure that the Third Wire Ground is good quality and not conducting current Digital Circuits The RS 232 connection brings a ground return connection from the host computer This means that the Digital area must be at the same voltage as the host s circuit board ground Otherwise ground loop currents will flow from the host through the instrument and back into the Earth Ground The LAN interface is electrically isolated and cannot introduce ground loops An R C network is used to eliminate common mode voltages from the unit s power supply but also has a high enough impedance to reduce ground loop current flow 37 Cryo con Model 12 14 Temperature Monitor The Model 12 14 Web Site The Model 12 14 Web Site The Status Page The Home or Status Page is shown here 3 Cryo Con Model 14 Temperature Monitor Microsoft Internet Explorer File Edit View Favorites Tools Help lt Back gt Dl A Asearch Gyravorites meda 4 B G SI E Address http 192 168 0 4findex htm Cryo con Model 14 Cryogenic Temperature Monitor Temperature Channel A 302 376K Channel B 301 217K Channel C 301 896K Channel D 301 481K Relay 1 Source ChA Status Off Relay 2 Source ChB Status Off Analog Output Source ChA Status 1 189 Volts Ins
95. pins of the computer should be wired to the receive data pins of the Model 12 14 and vice versa The 10BaseT crossover cable should be used for this purpose A crossover cable is usually a different color than the straight through patch cable Ethernet LAN Connector LEDs The RJ 45 LAN connector on the rear panel of the Model 12 14 has two green LEDs The left most LED indicates that a valid connection has been made to a hub or computer LAN M Connected Activity Cryo con Model 12 14 Temperature Monitor Specifications Features and Functions If the LAN is plugged in and the Connected LED is not on there is a problem that must be addressed before you can communicate with the instrument Possible problems are 1 Using the wrong type of cable For example using a Crossover Cable to connect the Model 12 14 to a hub instead of a computer See the sections above 2 Connection to the wrong type of hub The hub must be capable of accepting 10 BaseT connections Some older hubs do not support this The right most LED indicates activity on the LAN It should flicker periodically during normal operation RS 232 Connections The Model 12 14 uses a Female DB 9 connector for RS 232 serial communication A Rear view of the connector and it s pin out are shown below RXD Receive data TXD Transmit data O O Pp NC Pp NC p7 one The cable used to connect the Model 12 14 to a computer serial port is a ps
96. put channel that is near the recommended value Then enter the actual value in the box provided 61 Cryo con Model 12 14 Temperature Monitor Instrument Calibration 4 Click the Capture button on Line 4 The software will wait for the reading to stabilize and then will capture the reading and display it in the edit box on Line 4 When the above procedure is complete you will have established upper and lower target values as well as upper and lower measurements The edit boxes on lines 2 and 4 will contain the measured values At this time you may still change the target values on line 1 and 3 if desired Now you can automatically compute the required gain and offset values by clicking on the Calibrate button in the Calibration Results box This will change the Status field from Current to Calibrated and will update the Offset and Gain values with those calculated At this point to values have been transmitted to the instrument In order to send the offset and gain values to the instrument s calibration memory click the APPLY button You will be required to confirm that you really want to update calibration memory 62 Cryo con Model 12 14 Temperature Monitor Instrument Calibration Summary of Calibration Types Calibration data must be generated for each input channel by sequencing through the various calibration types on each channel A summary of types is given here Calibration Voltage Output Deccan
97. ration page NOTE If you are connecting the Model 12 14 to a Local Area Network with a gateway to the Internet there must be an e mail server program running on the gateway computer Unlike sending e mail from a computer the Model 12 14 is an Internet Appliance that requires a local e mail server to forward e mail E mail server programs are commonly available Check with your systems administrator for details 41 Cryo con Model 12 14 Temperature Monitor The Model 12 14 Web Site The Input Channel Configuration Page This page is used to set the characteristics of each input channel including sensor type units and alarm conditions 3 Cryo Con Model 14 Temperature Monitor Microsoft Internet Explorer Cryo con Model 14 Cryogenic Temperature Monitor uae UTM ChannelA units K Z sensor Pt100385 y High Alarm fi 00 000 Enable No y Low Alarm fi 0 0000 Enable No Ued cancel Input Channel B Name ChannelB Units Sensor Pt100385 High Alarm 200 000 Enable Low Alarm 20 0000 Enable No Input Channel C Name Channel C Units Sensor Pri00 385 z High Alarm 300 000 Enable No Low Alarm 30 0000 Enable No y Input Channel D Name Channel D Units Sensor Pt100 385 High Alarm 400 000 Enable No y Low Alarm 40 0000 Enable No _Updete Canos d C A itt Z Figure 9 Input Channel Setup Web Page 42 Cryo con Model 12
98. rform any unauthorized modification to the product For service or repair return the product to Cryo con or an authorized service center Cryo con Model 12 14 Temperature Monitor Table of Contents Table of Contents Preparing the Monitor for SG cinc rr A 1 Model IGETIIMCGIIOIN secan iris 1 SUPLA MOMS iS 1 Verify the AC Power Line Voltage Selection ccceeeeeeeeeeeeeeeeetees 1 Apply Power to th MOD oincssscxnissmisiroxendsnaarivdereaniiarnresanteuniasssaienseven 1 Factory Default Ss 2 Technical Assistante uinean eaaa A 3 A iae biii 3 Options and ACCESSO econ ra ld anian Ea 4 Specifications Features and FUNnctions cccccccccccscseessesseseseeeeeeeeaeeees 5 Speciicaton SUMME ii 5 Peramanes SUMINA ar daa 8 Input Channel CHaracienistes cicatrices 9 Output Channel Festus scanner 14 Remote Metas a E 15 Rear Panel A a aaia 17 Mechanical Form Factors and Environmental 0ccccccsseeeeeereee 19 The User lnea siii 21 O O NEA E 21 The Input Channel Temperature DisplayS e eeeeeteeeees 23 insirument Setup Menus eric A iiaia 24 Basic Operating Procedures nice 31 E A E AEE 31 Downloading a Sensor Calibration CuUrVe ooooonnccccccccnccccccnncnnnnnnnnnnnnns 31 Using the Sereen DAVEE narrar onsena eai 33 Internal Data Load inma 34 Using the Analog Output Channel ciiininiinno rencia 35 System Shielding and Grounding ISSUES iiivcci nonon sucios ire cias 37 A A A aR 37
99. rratic temperature display when no sensor is connected This is not an error condition The high input impedance of the monitor s input preamplifier causes erratic voltage values when unconnected A 301 455K Input Channel factory defaults are B 312 523K Sensor Units Kelvin Sensor Type Pt100 385 DIN standard 100Q Platinum RTD Alarm Enables Off C 362 321K D 394 312K To change these press the Enter key then refer to the Input Channel Setup Menu section Instrument setup factory defaults are Display Filter Time Constant 4 0 Seconds Display Resolution 3 digits RS 232 Baud Rate 9600 Data Logging Off To change these press the Enter key and then select the System Setup Menu Analog Output Control Channel ChA Enable No Offset 300 Gain 0 5 To change these press the Enter key and then select Analog Output Relay settings Relay 1 Relay 2 Off To change these press the Enter key and then select Relays Network settings are IP Address 192 168 0 4 Subnet Address 255 255 255 0 NOTE Factory defaults may be restored at any time by use of the following sequence 1 Turn power to the Model 12 14 OFF 2 Press and hold the Enter key while turning power back ON Cryo con Model 12 14 Temperature Monitor Preparing the Monitor for Use Technical Assistance Trouble shooting guides and user s manuals are available on our web page at http www cryocon com Technical assistance may be
100. rument is equipped with a three conductor AC power cable Plug the power cable into an approved three contact electrical outlet only Safety Symbols Direct current power line Equipment protected throughout by double insulation or reinforced insulation equivalent to Class II of 1EC536 Alternating current power line Alternating or dirrect current power line Caution High voltages danger of electric shock Background color Earth ground terminal Yellow Symbol and outline Black Caution or Warning See instrument documentation Background color Yellow Symbol Frame or Chassis terminal and outline Black On AC Power Protective conductor terminal Three phase alternating current power line A h Fuse Off AC Power O O A Cryo con Model 12 14 Temperature Monitor Specifications Features and Functions Environmental Conditions Environmental conditions outside of the conditions below may pose a hazard to the operator and surrounding area e Indoor use only e Altitude to 2000 meters e Temperature for safe operation 5 C to 40 C e Maximum relative humidity 80 for temperature up to 31 C decreasing linearly to 50 at 40 C e Power supply voltage fluctuations not to exceed 10 of the nominal voltage e Over voltage category Il e Pollution degree 2 e Ventilation The instrument has ventilation holes in its side covers Do not block these holes when the instrument is op
101. ry 1973 on the harmonization of the laws of Member States relating to electrical equipment designed for use within certain voltage limits The compliance of the above mentioned product with the Directives and with the following essential requirements is hereby confirmed Emissions Immunity Safety EN 55011 1998 EN 50082 1 1997 EN 61010 1994 A2 May 96 The technical files and other documentation are on file with Mr Guy Covert President and CEO As the manufacturer we declare under our sole responsibility that the above mentioned products comply with the above named directives LARVA Guy D Covert President Cryogenic Control Systems Inc October 15 2005 85 Cryo con Model 12 14 Temperature Monitor Appendix A Installed Sensor Curves Appendix A Installed Sensor Curves Factory Installed Curves The following is a list of factory installed sensors and the corresponding sensor index ISENIX Pisenx Name Description 0 None No Sensor Used to turn the selected input channel off Cryo con S700 series Silicon Diode Range 1 4 to 500K 10uA constant Cryocon S700 rane current excitation LS DT 670 Lakeshore DT 670 series Silicon Diode Curve 11 Range 1 4 to 500K 10uA constant current excitation LS DT 470 Lakeshore DT 470 series Silicon Diode Curve 10 Range 1 4 to 500K 10u4A constant current excitation a ore SOS SOS Scientific Instruments Inc 410 Diode Curve Range 1 5 to 450K 104A SI 410 D
102. s NOT affect the internal accuracy of the instrument or the format of measurements reported on the remote interfaces The main use for this command is to eliminate the flicker in low order digits when the instrument is used in a noisy environment SYSTem SSENa YES NO Sets or queries the screen saver enable When enabled the screen saver mode will be entered after the selected timeout The screen will go blank but all other processing will continue Screen saver is canceled by pressing any key on the front panel SYSTem SSTimer 5 10 15 20 25 30 Sets the screen saver timeout to 5 10 15 20 25 or 30 minutes 77 Cryo con Model 12 14 Temperature Monitor Remote Programming Guide Input Commands The INPUT group of commands are associated with the configuration and status of the four input channels Parameter references to the input channels may be e Numeric ranging in value from zero to seven e Channel ID tags including CHA or CHB e Alphabetic including A or B INPut A B C D or INPut A B C D TEMPerature The INPUT query reports the current temperature reading on any of the input channels Temperature is filtered by the display time constant filter and reported in display units Query only INPut A B C D UNITs K C F S Sets or queries the display units of temperature used by the specified input channel Units may be K for Kelvin C for Celsius F for Fahrenheit or S for pri
103. s any 15 character string and is only used to identify the sensor Sensor type can be selected from a pull down menu or entered directly Note that different models of Cryo con instruments support different types of sensors Therefore it is important to enter a sensor type that is supported by the specific product If the instrument receives a sensor type that it does not support the Diode type is selected The section titled Supported Sensor Configurations gives complete information on sensor types 48 Cryo con Model 12 14 Temperature Monitor Cryo con Utility Software The Multiplier field is used to select the sign of the sensor s temperature coefficient A value of 1 selects a Negative Temperature Coefficient sensor while a value of 1 selects a Positive Temperature Coefficient The Unit field selects the units used in the calibration curve Choices are Volts Ohms or LogOhm Checking the Save as crv will save the curve to disk as a Cryo con crv file The sensor curve may be viewed as a graph by clicking the Display Curve button An example plot is shown here nn Sensor Curve 8m D 3 N 3 Output Volts iS 3 L 3 0 100 200 300 400 500 600 Temperature K After completing any desired changes in the Edit Curve Header dialog box click Accept to proceed Then the curve number dialog box will appear A user c
104. s much easier to configure e mail using the instrument s embedded web server MAIL A B C D ADDR IPA Set or query the e mail server IP address Parameter format is an ASCII string and must be enclosed in quotation marks For example 192 168 0 1 MAIL A B C D FROM from e mail address Set or query the from e mail address Parameter is an ASCII String For example Model12 mynetwork com MAIL A B C D DEST to e mail address Set or query the from e mail address Parameter is an ASCII String For example Model12 mynetwork com MAIL A B C D PORT lt port number gt Set or query the e mail port Parameter is integer and default is 25 MAIL A B C D STATE ON OFF Set or query the input channel e mail send enables If a channel is enabled e mail will be sent when an alarm condition is asserted on the selected input channel 82 Cryo con Model 12 14 Temperature Monitor Remote Programming Guide Code snippet in C The following code opens a Cryo con instrument at address 192 168 0 4 on the Local Area Network It is written in Microsoft Visual C and uses the eZNET LAN library provided on the Cryo con utility CD Il Example Ethernet LAN program using C TCPIP declarations include TCPIPdrv h TCPIPdrv LAN Define global LAN object char IPA 192 168 0 4 Instrument s IP address on the LAN char tempstr 257 temporary
105. sa Rancho Santa Fe CA 92067 Cryo con Model 12 14 Temperature Monitor Preparing the Monitor for Use Options and Accessories Instrument Accessories 04 0420 RS 232 Null Modem Cable 6 04 0310 AC Power Cord 4034 028 Terminal block for Analog Output and Relay connections 4034 038 Dual Sensor Cable 2 x 8 foot Table 2 Model 12 14 Instrument Accessories Cryogenic Accessories 900 900 series Silicon Diode Temperature Sensors Temperature range 1 4 to 375K S700 700 series Silicon Diode Temperature Sensors Temperature range 1 4 to 375K CP 100 CP 100 series Ceramic Wound RTD 100Q GP 100 GP 100 series Glass Wound RTD 100Q XP 100 XP 100 series Thin Film Platinum RTD 100 XP 1K XP 1K series Thin Film Platinum RTD 1 000Q Ruthenium Oxide Temperature range is 1 4 to 40K R400 Commonly used with superconducting magnets R500 Ultra low temperature Ruthenium Oxide Temperature range is 1 0 to 40K Table 3 Cryogenic Accessories Cryo con Model 12 14 Temperature Monitor Specifications Features and Functions Specifications Features and Functions Specification Summary User Interface Display Type 20 x 4 character or 140x32 graphics VFD Number of Inputs Displayed Model 12 2 Model 14 up to 4 Keypad Sealed Silicon Rubber Temperature Display Six significant digits autoranged Display Update Rate 0 5 Seconds Display Units K C F or native sensor units Display Resolution User
106. select the Diode input sensor type PTC Resistor Sensor Devices RTDs The Model 12 14 supports all types of Positive Temperature Coefficient PTC resistive sensors Various combinations of excitation current and full scale input voltage allow the user to trade off accuracy vs sensor self heating Standard calibration curves are provided for DIN43760 and IEC751 Platinum sensors A table of recommended setups for various types of PTC resistor sensors is shown here Sensor Sensor E 3 a Platinum 1000 PTC100 1 0mA DC Platinum 10000 PTC1K 100A DC Platinum 10KQ PTC10K 101A DC Rhodium Iron PTC100 1 0mA DC Table 7 PTC Resistor Sensor Configuration 10 Cryo con Model 12 14 Temperature Monitor Specifications Features and Functions NTC Resistor Sensor Devices The Model 12 14 also supports almost all types of Negative Temperature Coefficient NTC resistive sensors Using AC constant voltage excitation these sensors can be used down to extremely low temperatures Examples of NTC resistor sensors include Ruthenium Oxide Carbon Ceramic Cernox Carbon Glass Germanium and Thermistors Calibration tables may be entered either directly in Ohms or in base 10 Log of Ohms A table of recommended setups for various types of NTC resistors sensors is shown here Sensor ae Calibration Carbon Glass 10mV to 1 0mV AC LogOhm Germanium acr omvorm ac O LogOhm RutheniumOxide ar T Table 8 N
107. sing a lower baud rate In some cases inserting a 50mS delay between commands will help Noise pickup Try using shielded cables with the shield connected to a metal backshell at both ends Don t send reset RST commands to the monitor before reading Possible causes A Category 5 crossover patch cable is being used where a Category 5 patch cable should be used or visa versa The TCP settings between the monitor and the PC are incompatible Review the network configuration section PC Client software not configured to use TCP Data Socket 5000 Debugging tip Cryo con utility software can be used to talk to the monitor over the LAN Data Socket port using the terminal mode All command and response strings are displayed Since the software provides the proper interface setup it is a good way to establish initial connection 95 Cryo con Model 12 14 Temperature Monitor Appendix C Enclosure Options Appendix C Enclosure Options Panel Mounting Panel Cutout Shown here is a cut out drawing for panel mounting of the Model 12 14 2 700 66 14 134 87 Panel Mount Kit The Model 12 14 mounts to panel by sliding the enclosure through a panel cut out hole and then installing the panel mount kit Cryo con part number 4012 020 Drawings and assembly of the panel mount kit are shown here 166 4 22 __ 125 3 04 RAD 2500 2 PLACES 500 97 Cryo con Mode
108. ssible causes temperature measurements The wrong sensor type or sensor calibration curve is being used Refer to the Input Channel Setup Menu section A four wire measurement is not being used Some cryostats use a to a two wire measurement internally This can cause offset errors due to lead resistance No temperature Review the Error Displays section above reading 94 Cryo con Model 12 14 Temperature Monitor Appendix B Troubleshooting Guide Remote I O problems Symptom Can t talk to RS 232 interface Intermittent lockup on RS 232 interface Can t talk to the LAN interface Possible causes Ensure that the baud rate of the monitor matches that of the host computer Ensure that the host computer settings are 8 bits No parity one stop bit The RS 232 port does not have an effective hardware handshake method Therefore terminator characters must be used on all strings sent to the monitor Review the RS 232 Configuration section Ensure that you are using a Null Modem type cable There are many variations of RS 232 cables and only the Null Modem cable will work with Cryo con monitors This cable is detailed in the RS 232 Connections section Debugging tip Cryo con utility software can be used to talk to the monitor over the RS 232 port using the terminal mode All command and response strings are displayed This is a good way to establish a connection Possible causes Long cables Try u
109. st press the Enter key and use the gt or 4 key to scroll through all of the sensor types available When the desired sensor is displayed press the Enter key to configure the instrument Select None to disable the input channel At the end of the factory installed sensors eight user installed selections will be shown The default name for these is User Sensor N However this name can be changed to give a better indication of the sensor type that is connected For most sensor types installation is now complete and the 4 key can be pressed to return to the Home Status display The exceptions are NTC resistor sensors that use constant voltage AC excitation With these types of sensors you will need to scroll down to the Bias Voltage field and select the desired constant voltage excitation level Once sensor configuration is complete review the section on Sensor Connections to connect the sensor to the instrument Downloading a Sensor Calibration Curve The Model 12 14 can accommodate up to six user defined sensor calibration curves that can be used for custom or calibrated sensors Since these curves can have up to 200 entries they are usually maintained on a computer as a text file and downloaded to the instrument by using the Cryo con Utility Software However curve data may also be entered and edited from the front panel Cryo con sensor calibration curves have a file extension of crv They may be opened and edited with any text edit
110. stem Commands System commands are a group of commands associated with the overall status and configuration of the instrument rather than a specific internal subsystem SYSTem DISTc 0 5 1 2 4 8 16 32 64 Set or query the display filter time constant The display filter is time constant filter that is applied to all reported or displayed temperature data Available time constants are 0 5 1 2 4 8 16 32 or 64 Seconds SYSTem RESeed Re seeds the input channel s averaging filter allowing the reading to settle significantly faster The display filter may have filter time constants that are very long The RESEED command inserts the current instantaneous temperature value into the filter history thereby allowing it to settle rapidly Note The RESEED command is useful in systems where a computer is waiting for a reading to settle Issuing the RESEED command will reduce the required settling time of the reading SYSTem HWRev Queries the instrument s hardware revision level SYSTem FWREV Queries the instrument s firmware revision level SYSTem DRES FULL 1 2 3 Sets or queries the instrument s display resolution Choices are e FULL The VFD will display temperature with the maximum possible resolution e 1 2or3 The VFD display will display the specified number of digits to the right of the decimal point NOTE This command only sets the number of digits displayed on the front panel display It doe
111. ter to change the unit s IP 192 168 0 4 e Ethernet IP address Press Enter to reset all Ethernet LAN 2 Reset Net Confi g settings back to their original factory defaults s The Time Date Setup Menu The Time Date Setup Menu is used to set the system s time and date settings Time Date Setup Menu 1 Time 11 04 03 8 Enter time in 24 hour format 2 Date 7 1 04 a y Enable automatic daylight savings OTERO 29 Cryo con Model 12 14 Temperature Monitor Basic Operating Procedures Basic Operating Procedures Configuring a sensor Before connecting a new sensor to the Model 12 14 the instrument should be configured to support it Most common sensors are factory installed others require a simple configuration sequence A complete list of sensors installed at the factory is shown in Appendix A To configure the instrument for one of these sensors proceed as follows 1 To install the sensor on Input Channel A press the Enter key scroll down to the ChA field and press Enter again This will take you to the Input Channel Setup menu for the selected channel The first line of this display will show the current temperature in real time and allow you to select the desired display units To change the display units press the Enter key and then use the gt or 4 keys to sequence through the available options Press Enter again to make your selection 2 Press the key to go down to the Sen filed Here you mu
112. terchangeability and operation in high magnetic T K Ohms QK fields 0 05 29072 628083 Applications include low temperature 0 1 13114 145658 superconducting magnet systems and liquid helium 0 2 6996 30943 systems 0 3 5053 13345 The Model 12 14 using 1 0V Constant Voltage AC 05 ue Arop excitation will operate with the R400 over it s full 4 29a 1203 temperature range qe 1935 eens 2 1723 343 5 3 1508 152 4 4 2 1378 80 4 T K Ohms QIK 10 1178 15 4 2 239556 17787 20 1101 4 08 3 221769 13961 30 1053 4 0 4 207807 11343 40 1009 3 5 6 187171 7647 10 163317 3907 20 138709 1400 30 128199 745 T K Ohms oK 0 122128 A 2 239556 17787 100 108595 108 3 221769 13961 ae 102432 4 207807 11343 273 100604 0 05 6 187171 7647 10 163317 3907 20 138709 1400 30 128199 745 40 122128 474 100 108595 108 200 102432 34 273 100604 0 05 104 Cryo con Model 12 14 Temperature Monitor INDEX INDEX LOB ASEM iaa ca caian OE Ne Taaa a e TAa er cid tes 15 Instrument CalibratiON oooonnnnnnnnnnnoncninnnnnconocanacanacanananananinnno 59 AC power de Calibration Interval 59 connection 17 Calibration Services 99 COP cos c icizaranas wid Password 60 Fuse Replacement cccccccccceseeeseeeeeeeeeeseeeeeeteeeeeeeaee 18 Procedure 242s io e ii woh lenisletae 59 Line Voltage SelectiOM oooooocincccnnncccnncccnncccnconcccccnnnnnnann no 18 InStrUMONES AN aia AA
113. ters that helps you identify the sensor The Sensor Type Multiplier and Unit fields affect how the instrument is configured so they must be correctly set or unexpected results will be obtained sensor te tir ons Sa a Ruthenium Oxide acr 40 togomms _LSRXTO2av C Tremis AGR 10 LogOhms tseo Germanium ACR o looms isRxrozev C carson Gass aer mo Logonms LSRXTO2 av C Panom Po o O Ohms Prso Table 21 Recommended Sensor Configuration Data Note that NTC resistor data is generally in units of LogOhms However it can also be in units of Ohms Be sure to check the curve data for reasonableness 32 Cryo con Model 12 14 Temperature Monitor Basic Operating Procedures Note One simple way to generate a sensor calibration curve is to open a similar sensor file with a text editor and paste in your own data The example files in the above table are for that purpose They are located in the Model 12 or Model 14 subdirectory of the Cryo con utility software package At this point it is a good idea to view a graph of the curve data x Sensor Curve 27 720 4 217 40 000 3 021 S OuputilogOhm c The above graph is for a Ruthenium Oxide sensor with units of LogOhms It shows the typical highly non linear curve for that type sensor If the curve data was in units of Ohms it would be so extremely non li
114. tion Type Range Current p SI DiodeV 0 25V N A Voltage measurement for use with Silicon Diode temperature sensors SI Diode N A 10uA 10uA constant current source used A with Silicon Diode sensors 1mA AC 10mV 1 25Hz Autoranged 1mA range used with constant voltage mode sensors 400uA AC 10mV 1 25Hz Autoranged 100HA range used with constant voltage mode sensors 10uA AC 10mV 1 25Hz Autoranged 10uA range used with constant voltage mode sensors 1mA DC 0 2 5VDC DC measurement of 100 Platinum RTD sensors 100uA DC 0 2 5VDC 100uA ae of 1K Ohm Platinum DC measurement of 10K Ohm 10uA DC 0 2 5VDC 10uA Platinum RTDs or other resistor sensors that use DC current excitation 63 Cryo con Model 12 14 Temperature Monitor Instrument Calibration Calibration of Silicon Diodes Silicon Diode sensors require the application of a precision 10 A current followed by reading the voltage drop across the device Therefore calibration of a diode requires two steps 1 Calibration of the input voltage reading and 2 Calibration of the 10 A current source Note that the voltage calibration must always be done first since the current source calibration requires a precision voltage reading Diode Voltage Calibration To calibrate the diode voltage range click on the SI Diode V tab and follow the sequence described above to send Gain and Offset values to the instrument The upper target requires connection of a 1 9 Volt source
115. trument Date 11 6 2005 Time 14 37 36 Status CCM14 9999 Cryocon Model 14 Rev 1 12A gt fe internet Figure 7 Model 12 14 Web Site Status Page This page shows the current temperature and alarm conditions for both channels as well as the status of both relays and the analog output Clicking on the Status field of the top navigation bar will refresh this page 39 Cryo con Model 12 14 Temperature Monitor The Model 12 14 Web Site The Network Configuration page The Network Configuration page is accessed by clicking on the Net Config field of the top navigation bar Z Model 14 Network Configuration Microsoft Internet Explorer o gt BN Cryo con Model 14 Cryogenic Temperature Monitor S Configuration Net Name ecm 4 9999 IP Address fig2 168 Jo Sa Subnet Mask 255 255 255 0 Default 255 Gateway Address 192 168 Fo 3 TCP Port 5000 Default 5000 ues Settings do not take effect until the instrument is reset e Time Server 192 168 a a Optional Name Server 192 168 o B coptionan Settings do not take effect until the instrument is reset eMail Mail Server Adar max 25 characters From max 25 characters To o max 25 characters Mail Port 25 default 25 cha Of y che Off che Off cho Of y MAC Address 00 90 23 00 00 00 Cryocon Model 14 Rev 1 12A E II IA Figure 8 Network Configuration Page
116. units Selections 1 A 77 123 KN are K C F or S Here S selects sensor units Volts or Ohms xs Sensor type selection Allows selection of any user or A Sen Pt100 385 M factory installed sensor Bias voltage used in Constant Voltage bias mode If 3 ABias Vol tage N A 4 sensor does not support voltage bias N A is shown Otherwise selections are 1 0V 10mV and 1 0mV La RHI gh ATarm 200 000 sapo trio Hon Troer sem 5 High Enable Nom ig merete sem mane 76 Low ATarm 200 000 seront tw Terenure am Table 17 Input Channel Setup Menus Temperature Units The Units field line 1 assigns the units that are used to display temperature for the input channel Selections are K for Kelvin C for Celsius F for Fahrenheit and S for sensor units Note that if the S option is selected the actual sensor units will be displayed when the field is deselected Sensor units are V for Volts and Q for Ohms Sensor Type Selection Line 2 selects the Sensor type for the input channel When this field is selected the scroll keys are used to scroll through all of the available sensor types Factory installed sensors appear first and then user sensors For a list of factory installed sensors refer to Appendix A 25 Cryo con Model 12 14 Temperature Monitor The User Interface Bias Voltage Selection The Model 12 14 supports constant voltage AC excitation for resistor sensors Other sensors including diodes are supported by
117. ution 24 bits Measurement Filter 0 5 1 2 4 8 16 32 and 64 Seconds Calibration Curves Built in curves for industry standard sensors plus six user curves with up to 200 entries each Interpolation is performed using a Cubic Spline Data Logging Data logging is performed to an internal 20K byte circular buffer and is time stamped with a real time clock Buffer memory is non volatile and will retain valid data without AC power The Model 12 will log 1 000 samples and the Model 14 will log 820 Analog Output Type Voltage output 0 to 4 096 Volts Input impedance 600Q Digital Resolution 0 0015 of full scale range 16 bits Relay Outputs Number Two Fully independent Input Any input channel High and Low setpoints Contact Rating 1 Amps 30VDC Contacts Available Normally Open Rear Panel Connector Detachable terminal block Status Outputs Visual Alarms Independent visual alarms can be configured for each input They are displayed on the front panel display and as an LED indicator Status reported via Remote Interface Input channel alarms Remote Interfaces Remote interfaces are electrically isolated to prevent ground loops RS 232 Serial port is an RS 232 standard null modem Rates are 9600 38 400 and 57 600 Baud Ethernet Industry standard 10 BaseT Electrically isolated Language Remote interface language is IEEE SCPI compliant National Instruments LabView drivers available for all interfaces G
118. utput The first line of the Analog Output Menu selects the source input channel The analog output voltage will be scaled to the selected channel Next is the enable If the analog output is not enabled it will output a constant zero Volts The Offset and Gain values are used to scale the output to be within it s zero to 10 Volt range The formula is Output Temperature Offset x Gain Where Temperature is the current reading of the selected input channel The Relays Menu There are two dry contact relays available in the Model 12 14 They can be independently programmed by using this screen The relay number 1 or 2 is superscripted in the first column Relay 1 Relay 2 Setup Menu ENEE i A High temperature relay enable rep a Low temperature relay enable OREA Table 19 Relay Setup Menu Setting up a Relay The various conditions that can cause a relay to assert may be enabled or disabled by using the Ena fields provided High and Low temperature set points are entered as floating point numeric values There is a 0 25K hysteresis between the asserted and de asserted states 27 Cryo con Model 12 14 Temperature Monitor The User Interface The System Setup Menu The System Functions Menu is used to set many of the instrument s parameters including display resolution I O port settings etc It is selected from the Root Menu System Functions Menu y Sets the display time constant in 1 Displ yTC 2
119. which can separately be configured for use with any supported sensor Input Configurations A complete list of the input configurations supported by the Model 12 14 is shown below Sensor Max Voltage Bias Excitation Typical Use Type Resistance Type Current yp 10uADC Silicon Diode GaAs Diode 1 0mA to NTC resistors including AGN etm 200nA AC Ruthenium Oxide Cernox PTC10K 62 5KQ 101A DC Platinum 10KQ at C PTC1K 6 25KQ 100uA DC Platinum 1 0000 at C PTC100 6250 1 0mADC Platinum 1002 at C Table 6 Input Configurations Bias types are Cl Constant Current sensor excitation CV Constant Voltage sensor excitation O Note A complete listing of factory installed sensors and their characteristics can be found in Appendix A Cryo con Model 12 14 Temperature Monitor Specifications Features and Functions Constant Current Sensor Excitation Cryogenic sensors including Diode and Platinum devices constant current excitation To support this the Model 12 14 has a constant current excitation mode with three selectable outputs of 10uA 1004A and 1 0mA DC full scale Temperature is measured with diode type sensors by providing a 10uA excitation current and reading the resulting voltage The Model 12 14 uses a Ratiometric bridge technique to measure resistor sensors Here the measurement is the ratio between the sensor resistance and an internal calibration standard resistance This e
120. will need to calibrate each channel individually Along the top of the screen there are tabs that show the types of calibration that are supported by the instrument To perform a complete calibration of a single input channel all calibration types must be calibrated Note the Calibration Results box on the screen The Status field will initially be set to Current and the Gain and Offset values shown will be those read from the instrument c Note If your calibration procedure requires saving historical values you will want to record the Gain and Offset values shown on the initial screen before proceeding with actual calibration 60 Cryo con Model 12 14 Temperature Monitor Instrument Calibration There are two methods available for calibration 1 Automatic The software will recommend voltages and resistances You can set these values on the input channel and capture the instrument s actual readings Then the software will automatically generate offset and gain values for you 2 Manual You can manually enter Offset and Gain values and send them to the instrument Manual Calibration To manually calibrate a range select the desired range from the range type tabs and enter the desired Gain and Offset values in the boxes given and then click the APPLY button Gain is a unit less gain factor that is scaled to a nominal value of 1 0 It is usually computed by gain UT LT UM LM where UT
121. y format is selected by pressing the amp or Y keys until the desired format is displayed The Home Status display can be selected from anywhere in the j 1 2 3 j 3 4 5 K instrument s menu tree by pressing escape amp key Note that E 9 2 a 1 46 K pressing the amp key will abort any data entry operation that is in progress 21 Cryo con Model 12 14 Temperature Monitor The User Interface Navigating the Menu Tree Setup and configuration functions are performed by working with the monitor s menu tree To access this tree from the Home Display press the Enter key The root menu shown here will be displayed ChA Setup The character in the far right column is the cursor To exit this ChB Setup menu and return to the Home Display press the 4 key ChC Setup ChD Setup To navigate the menu move the cursor up or down by pressing the amp or keys The cursor will scroll down to show additional lines To select the line at the current cursor position press the Enter key In the case of the above display pressing Enter will cause the monitor to display the input channel A setup or ChA Setup menu If the cursor is positioned at a data entry menu line when the Enter key is pressed the cursor will change into a data selection cursor as follows N Indicates that the selection is an enumeration field where sequential choices will be displayed each time the P or 4 key is pressed To make the displayed selection

Model 12 / 14 Temperature Monitor User`s Manual

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