Home

- OMEGA Engineering

1. 3 TD out 3 TD out N 2 RD in 4 DTR out 1 6 DSR in 6 DSR in 4 16 out 1 NC Si 7 RTS out 7 DTR tied to 4 8 CTS in 8 NC in ee eee 1 DCD in Model 211 to PC Serial Interface PC with DB 25P Standard Null Modem Cable Model 211 DE 9P DE 9S to DB 25S PC DB 25P 5 GND lt DES 1o DES T GND 2 RD in M 2 TD out 3 TD out 3 RD in 1 NC ENTM 4 RTS out 7 DTR tied to 4 5 CTS in 8 NC m 8 DCD in 6 DSR in lt 20 DTR out 4 DTR out 6 DSR in Model 211 to PC Interface using Null Modem Adapter Model 211 DE 9P Null Modem Adapter PC DE 9P 5 GND S 5 GND 2 RD in 4 3 out 3 TD out 2 RD in 1 NC 4 out 6 DSR in E 1 DCD in 4 DTR out 6 DSR in 7 DTR tied 04 8 CTS in 8 NC lt 7 RTS out 9 NC 9 NC NOTE Same as null modem cable design except PC CTS is provided from the CYD211 on DTR Service 5 7 5 8 Omega Model CYD211 User s Manual This Page Intentionally Left Blank Service Omega Model CYD211 User s Manual CHAPTER 6 OPTIONS AND ACCESSORIES 6 0 GENERAL This chapter provides lists of models options accessories sensors wires and special equipment available for the
2. 5 4 FIRMWARE REPLACEMENT 5 5 CONNECTOR DEFINITIONS 5 5 1 Serial Interface Cable Wiring eene 5 6 CALIBRATION PROCEDURE seen ene 6 OPTIONS AND 6 0 GENERAL istutas Ku maa te d e perd etd katade 6 1 MODBLS siosssesch es UP ER NEN ON 6 2 ACCESSORIES azas eio eee tn e einen uh 6 3 MIRES 6 4 SENSORS APPENDIX A CURVE TABLES seen il Table of Contents Omega Model CYD211 User s Manual LIST OF ILLUSTRATIONS Figure No Title 1 1 Model CYD211 Front Panel 2 1 Model CYD211 Rear 2 2 Power Conrn ctor c nenoveneneneDoecueneeD AATED ede 2 3 Input Output Connector eese nemen 2 4 Panel Mounting Details esses 2 5 2111 amp 2112 Panel Mount Adapters 3 1 Model CYD211 Display missaks 5 1 Model CYD211 Main PCB Layout 5 2 Power Connector eneeier tite baie ve eoe Rete duke 5 3 Input Output Connector a rennen nennen 5 4 RS 232 DTE Connector oed Table No 1 1 1 2 3 1 3 2 3 3 3 4 3 5 3 6 3 7 4 1 4 2 4 3
3. Refer to the Omega Temperature Measurement and Control Catalog for complete details on all Omega Temperature Sensors 3 4 Operation 3 5 2 Curve Selection Omega Model CYD211 User s Manual The Model CYD211 supports a variety of temperature sensors sold by Omega and other manufacturers After the appropriate sensor type is selected for the input Paragraph 3 5 1 an appropriate temperature response curve may be selected The Model CYD211 can use curves from several sources Standard curves are included with every instrument and numbered 1 thru 7 A single user curve can be loaded via the serial interface when a sensor does not match a standard curve CalCurve option can be stored as the user curve at the factory or by the customer The complete list of standard curves built in to the Model CYD211 is provided in Table 3 2 Curve tables are listed in Appendix A of this manual During normal operation only the curves related to the input type selected are displayed If the curve you wish to select does not appear in the selection sequence make sure the curve format matches the recommended format for the input type selected Refer to Table 3 1 NOTE The sensor reading can always be displayed in sensor units If a temperature response curve is selected for an input its readings may also be displayed in temperature To select a curve continue from the input type selection Paragraph 3 5 1 or press the Select key use the A o
4. 3 OK 325 K PT 100 500 09 1 kO 4 OK 475 K PT 1000 09 10 KQ 5 OK 1000 K NTC RTD 0 10 kO 3 9 ANALOG OUTPUT TO TEMPERATURE CONVERSION The output current or voltage is directly proportional to the temperature reading For the 4 20 mA output the following formula converts output current to temperature T A Bx lour where T temperature in Kelvin Iour output current in mA and A and B are constants from Table 3 5 For the 0 10 V output the following formula converts output voltage to temperature T C x Vour where T temperature in Kelvin Vour output voltage and C is a constant from Table 3 5 Table 3 5 Conversion Parameters for Temperature in K 4 20 mA 0 10 V RANGE TEMP K A K B K mA C K V 0 0 20 5 00 1 2500 2 0 1 0 100 25 00 6 2500 10 0 2 0 200 50 00 12 5000 20 0 3 0 325 81 25 20 3125 32 5 4 0 475 118 75 29 6875 47 5 5 0 1000 250 00 62 5000 100 0 Operation 3 9 Omega Model CYD211 User s Manual 3 10 LOCKING AND UNLOCKING THE KEYPAD The keypad lock feature prevents accidental changes to parameter values When the keypad is locked only the alarm reset function of the Select key still functions All other key functions are ignored To lock the keypad press and hold the Enter key for 10 seconds The Fir display will show tu indicating the keypad is now locked Release the En
5. On re ALA Input Setup Settings Input Type Si Silicon Diode GaAlAs Gallium Aluminum Arsenide Diode 250 Pt PT 100 250 Q Range 500 Pt PT 100 500 Q Range 1000 Pt PT 1000 5 kQ Range NTCRTD Neg Temp Coefficient RTD Input Curve Selections depend on input type None DT 470 DT 670 DT 670 PT 100 PT 1000 User Display Units front panel LEDs C Celsius F Fahrenheit K Kelvin V Q Sensor Units Analog Output Settings Analog Output Mode Voltage Current Analog Output Range 0 0to20 K 1 0to 100K 2 0 to 200K 3 0 to 325 4 010475 5 0 to 1000 Alarm Settings Alarm Mode Off On High Setpoint Low Setpoint Deadband Latching 0 Off 1 On Relay Settings Relay 1 Mode Off On Alarms Relay 2 Mode Off On Alarms Omega Model CYD211 User s Manual CHAPTER 1 INTRODUCTION 1 0 GENERAL This chapter provides an introduction to the Model CYD211 Temperature Monitor The Model CYD211 was designed and manufactured in the United States of America A general description is provided in Paragraph 1 1 specifications in Paragraph 1 2 safety summary in Paragraph 1 3 and safety symbols in Paragraph 1 4 1 4 DESCRIPTION The Omega single channel Model CYD211 Temperature Monitor provides the accuracy resolution and interface features of a benchtop temperature monitor in an easy to use easily integrated compact instrument With appropriate sensors the Model CYD21
6. 15 VDC 15 mA 5 pin DIN Size 96 mm W x 48 mm H x 166 mm D 3 8 x 1 9 x 6 5 inches Mounting Panel mount into 91 mm W x 44 mm H 3 6 x 1 7 inch cutout Weight 0 65 kilograms 1 5 pounds Approval CE Mark 1 4 Introduction Omega Model CYD211 User s Manual Ordering Information Model 2118 Model CYD211 with 100 250 V universal input 17 VA power supply Power Options VAC 120 Includes U S line cord VAC 220 Includes European line cord Accessories included with the Model CYD211 Temperature Monitor 106 253 Sensor input mating connector DB 25 106 264 Shell for sensor input mating connector MAN 211 User s manual NOTE Panel mount hardware installed at factory Calibration Options 8000 CalCurve Compact Disk CD Consists of a calibrated sensor breakpoint table on a CD in ASCII format for customer download 8001 211 CalCurve factory installed Consists of a calibrated sensor breakpoint table factory installed into non volatile memory CAL 211 Instrument calibration with certificate CAL 211 DATA Instrument calibration with certificate and data Accessories Available 2111 Single DIN panel mount adapter see Figure 2 5 2112 Dual DIN panel mount adapter see Figure 2 5 Introduction 1 5 Omega Model CYD211 User s Manual Table 1 2 Sensor Input Performance Chart Sensor Type Silicon Diode GaAlAs Diode Temperature Coefficient Negative Negative Sensor Units Volt
7. high value low value lt deadband gt lt latch enable term n nnn n nn n n lt off on gt Determines whether the instrument checks the alarm for input where 0 off and 1 on lt high value gt Sets the value the temperature is checked against to activate the high alarm Sets the value the temperature is checked against to activate low alarm Sets the value that the temperature must change outside of an alarm condition to deactivate an unlatched alarm lt latch enable gt Specifies a latched alarm remains active after alarm condition correction where 0 off no latch and 1 on Configures the alarm parameters for the input ALARM 1 270 0 0 0 1 term Turns on alarm checking for the input activates high alarm if Kelvin reading is over 270 and latches the alarm when Kelvin reading falls below 270 lt ow value lt deadband gt ALARM Input Returned Format ALMRST Input Remarks ANALOG Input Format Example ANALOG Input Returned Format AOUT Input Returned Format Remarks 4 16 Omega Model CYD211 User s Manual Input Alarm Parameter Query ALARM term lt off on gt high value low value lt deadband gt latch enable term n nnn n nnn n t nn n n Refer to command for description Reset Alarm Status Command ALMRST term Clears both the high and low status of the alarm including latching alarm Analog Output Parameter C
8. 0 59 6311114 Toll Free 0800 1 66342 e mail info omegashop cz 11 rue Jacques Cartier 78280 Guyancourt France Tel 33 0 1 61 37 2900 FAX 33 0 1 30 57 5427 Toll Free in France 0800 466 342 e mail sales amp omega fr Daimlerstrasse 26 D 75392 Deckenpfronn Germany Tel 49 0 7056 9398 0 FAX 49 0 7056 9398 29 Toll Free in Germany 0800 639 7678 e mail info omega de One Omega Drive River Bend Technology Centre Northbank Irlam Manchester M44 5BD United Kingdom Tel 44 0 161 777 6611 FAX 44 0 161 777 6622 Toll Free in United Kingdom 0800 488 488 e mail salesGomega co uk It is the policy of OMEGA to comply with all worldwide safety and EMC EMI regulations that apply OMEGA is constantly pursuing certification of its products to the European New Approach Directives OMEGA will add the CE mark to every appropriate device upon certification The information contained in this document is believed to be correct but OMEGA Engineering Inc accepts no liability for any errors it contains and reserves the right to alter specifications without notice WARNING These products are not designed for use in and should not be used for human applications Omega Model CYD211 User s Manual TABLE OF CONTENTS Chapter Paragraph Title 1 INTRODUCTION c ti n ii ina no n dna kaua nalia nano aasa aaasta 1 0 CPN RA 1 1 DE
9. 298 5 0 563128 34 35 7 1 00602 59 10 75 1 36423 10 279 0 0 607845 35 33 3 1 10014 60 10 00 1 38361 11 261 0 0 648723 36 31 2 1 10393 61 9 25 1 40454 12 244 0 0 686936 37 29 6 1 10702 62 8 50 1 42732 13 228 0 0 722511 38 28 3 1 10974 63 7 75 1 45206 14 213 0 0 755487 39 27 3 1 11204 64 6 80 1 48578 15 198 5 0 786992 40 26 5 1 11414 65 5 46 1 53523 16 184 5 0 817025 41 25 8 1 11628 66 4 56 1 56684 17 171 5 0 844538 42 25 2 1 11853 67 4 04 1 58358 18 159 5 0 869583 43 24 7 1 12090 68 3 58 1 59690 19 148 0 0 893230 44 24 3 1 12340 69 3 18 1 60756 20 137 5 0 914469 45 24 0 1 12589 70 2 62 1 62125 21 127 5 0 934356 46 23 7 1 12913 71 2 26 1 62945 22 118 0 0 952903 47 23 3 1 13494 72 1 98 1 63516 23 109 0 0 970134 48 22 8 1 14495 73 1 74 1 63943 24 100 5 0 986073 49 22 0 1 16297 74 1 53 1 64261 25 93 5 0 998925 50 21 3 1 17651 75 1 40 1 64430 A 2 Curve Tables Curve Tables Omega Model CYD211 User s Manual Table A 3 CTI Curve C Silicon Diode Breakpoint Temp K Volts 1 320 0 0 2968 2 305 0 0 3382 3 295 0 0 3640 4 285 0 0 3911 5 280 0 0 4050 6 270 0 0 4341 7 250 0 0 4896 8 195 0 0 6408 9 165 0 0 7255 10 140 0 0 7971 11 130 0 0 8245 12 125 0 0 8376 13 115 0 0 8625 14 110 0 0 8769 15 100 0 0 9049 16 95 0 0 9184 17 90 0 0 9314 18 85 0 0 9440 19 77 4 0 9626 20 65 0 0 9958 21 60 0 1 010
10. 4 4 4 5 5 1 A 1 A 2 A 3 A 4 LIST OF TABLES Title Page Temperature Range of Typical Omega 1 2 Sensor Input Performance Sensor Input Types II nennen nnne Standard Analog Output Range 5 Analog Output Scales in Sensor Units Conversion Parameters for Temperature in K Model CYD211 Default Values Recommended Curve Parameters esee Serial Interface Specifications essen Serial Interface Program Control Properties Visual Basic Serial Interface Quick Basic Serial Interface Program Interface Commands a enne nenne Calibration Table for Resistive Ranges Omega DT 470 Silicon Diode sese Omega DT 670 Silicon CTI Curve C Silicon Omega PT 100 1000 Platinum RTD Table of Contents iii QOUEPUE ALA rc ELAY Un 15 lt Model 211 Menu Structure 5i GAALAS 250 Pt 500 PE 1000Pk nbdrEd nanE dE dt 610 00 1000 USEr uaLE Cur rnb 0 rnb rnb 2 rn 3 rnl 4 rnb 5 AL OFF AL On Lech 0 LEch r OFF r n r RLR re OFF
11. Qbasic on an IBM PC or compatible running DOS or in a DOS window with a serial interface It uses the COMI communication port at 9600 Baud Use the following procedure to develop the Serial Interface Program in Quick Basic Start the Basic program Enter the program exactly as presented in Table 4 4 Adjust the COM port in the program as necessary Lengthen the TIMEOUT count if necessary Save the program Run the program ze US ROB Type a command query as described in Paragraph 4 1 6 3 8 Type EXIT to quit the program 4 1 6 3 Program Operation Once either program is running try the following commands and observe the response of the instrument Input from the user is shown in bold and terminators are added by the program The word term indicates the required terminators included with the response ENTER COMMAND IDN Identification query Instrument will return a string identifying itself RESPONSE LSCI MODEL211 2110000 032502 term ENTER COMMAND KRDG Kelvin reading query Instrument will return a string with the present Kelvin reading RESPONSE 12 345 term ENTER COMMAND INTYPE 0 Input type command Instrument will change the input type to silicon diode No response will be sent ENTER COMMAND INTYPE Input type query Instrument will return a string with the present input type setting RESPONSE O term ENTER COMMAND INTYPE 0 INTYPE Input type command followed by input type query Inst
12. and a LED shows the selected display units Use the A or Y key to cycle through the display units When the desired unit is highlighted press the Enter key 3 6 ALARM SETUP AND OPERATION The input of the CYD211 has high and low alarm capability Temperature reading data in Kelvin can be compared to the alarm setpoint values A reading higher than the high setpoint or off the high end of the temperature curve triggers the high alarm and a reading lower than the low alarm setpoint or off the low end of the temperature curve triggers the low alarm NOTE Alarm setpoints are always set in K but the alarm feature will still operate if the instrument displays C or F If no temperature response curve is chosen the alarm function will not operate Refer to Paragraph 3 5 2 for curve selection If an alarm activates for the input the display flashes between the current reading and ALA or ALF L for high and low alarms respectively The two relays can also be tied to alarm functions refer to Paragraph 3 7 Latching Alarms Often used to detect faults in a system or experiment that require operator intervention The alarm state remains visible to the operator for diagnostics even if the alarm condition is removed Relays often signal remote monitors or for added safety take critical equipment off line Pressing the Select key clears latched alarms Non Latching Alarms Often tied to relay operation to control part of a system or
13. 20 Low Alarm N O 9 Low Alarm N C 21 No Connection 10 No Connection 22 No Connection 11 High Alarm COM 23 High Alarm N O 12 High Alarm N C 24 No Connection 13 No Connection 25 No Connection Service Figure 5 3 Input Output Connector 5 5 Omega Model CYD211 User s Manual Serial Connector bmp CYD211Temperature Monitor Typical Computers DE 9P DTE DB 25P DTE DE 9P DTE Pin Description Pin Description Pin Description 1 No Connection 2 TD out 1 DCD in 2 Receive Data RD in 3 RD in 2 RD in 3 Transmit Data TD out 4 RTS out 3 TD out 4 Data Terminal Ready 5 CTS in 4 DTR out DTR out 5 Ground GND 6 DSR in 5 GND 6 No Connection 7 GND 6 DSR in 7 Data Terminal Ready 8 DCD in 7 RTS out DTR out tied to 4 8 No Connection 20 DTR out 8 CTS in 9 No Connection 22 Ringin in 9 Ring in in Figure 5 4 RS 232 DTE Connector 5 6 Service Omega Model CYD211 User s Manual 5 4 1 Serial Interface Cable Wiring The following are suggested cable wiring diagrams for connecting the CYD211 Serial Interface to various Customer Personal Computers PCs Model 211 to PC Serial Interface PC with DE 9P Model 211 DE 9P Standard oder Nul Modom Cable PC DE 9P 5 GND lt DES9S10DE9S 5 GND 2 RD in
14. 6 Introduction Omega Model CYD211 User s Manual Table 1 2 Sensor Input Performance Chart Continued 100 Q Platinum RTD 500 Q Full Scale 1000 Q Platinum RTD Cernox RTD Positive Positive Negative Ohms Q Ohms Q Ohms Q 0 500 2 0 5000 2 0 7500 2 1 mA 0 3 1 mA 0 3 10 pA 0 01 10 mQ 100 mQ 100 mQ PT 103 with PT 1001 CX 1050 SD 14J Cal with 1 4J Cal with 4L Cal 30 800 K 30 800 3 5 400 DIN 43760 Scaled from DIN 43670 Requires calibration 0 19 Q K at 30 K 1 9 Q K at 30 770 Q K at 4 2 K 0 42 Q K at 77 K 0 39 Q K at 300 K 0 35 Q K at 675 K 0 33 Q K at 800 K 4 2 Q K at 77 K 3 9 Q K at 300 K 3 3 Q K at 800 K 1 5 Q K at 77 K 0 1 Q K at 300 K 2 10 6 mK at 30K 10 mK at 77 K 10 mK at 300 K 10 mK at 675 K 10 mK at 800 K 20 mQ 10 6 mK at 30K 10 mK at 77 K 10 mK at 300 K 10 mK at 800 K 50 mQ mK at 4 2 K 33 3 mK at 77 K 500 mK at 300 K 0 004 Q 0 02 RDG 25 mK at 30 K 18 mK at 77 70 mK at 300 K 162 mK at 675 187 mK at 800 K 0 06 Q 0 04 RDG 40 mK at 30 K 33 mK at 77 135 mK at 300 K 370 mK at 800 K 0 1 Q 40 04 RDG mK at 4 2 K 88 mK at 77 K 1 144 K at 300K 105 mK at 300 K 262 mK at 675 K 287 mK at 800 K 170 mK at 300 K 470 mK at 800 K 0 2 mQ 5 PPM 2 0 m2 5 PPM 20 mQ 15 PPM of reading per C of read
15. Description 9001 005 Quad Twist Cryogenic Wire Two twisted pairs phosphor bronze wire 36 AWG 0 127 mm 0 005 inch diameter 9001 006 Duo Twist Cryogenic Wire Single twisted pair phosphor bronze wire 36 AWG 0 127 mm 0 005 inch diameter 9001 007 Quad Lead Cryogenic Wire Phosphor bronze wire flat 32 AWG 0 203 mm 0 008 inch diameter 9001 008 Quad Lead Cryogenic Wire Phosphor bronze wire flat 32 AWG 0 127 mm 0 005 inch diameter 6 4 SENSORS Silicon Diode sensors available from Omega Other sensors are also available Sensor No Sensor Description The smallest silicon diode Temperature Sensor available For Series DT 420 installation on flat surfaces Sensor incorporates the same type of silicon chip used in the Series DT 470 and DT 471 Silicon Diode Miniature Temperature Sensor Same silicon Series DT 450 chip used in the DT 470 configured for installation in recesses as small as 1 6 mm diameter by 3 2 mm deep F Silicon Diode Temperature Sensor Interchangeable Series DT 470 A repeatable accurate wide range customized for cryogenics Series DT 471 An economical version of the DT 470 for applications where temperature measurements below 10 K are not required Omega DT 670 diode temperature sensors offer the best accuracy across the widest useful temperature range 1 4 to Series DT 670 500 K of any silicon diode sensor in the
16. Diode 3 100 O Platinum 500 1 GaAlAs Diode 4 1000 Q Platinum 2 100 Q Platinum 250 5 RTD INTYPE 0 term Sets input sensor type to silicon diode Input Type Parameter Query INTYPE term sensor type term n Refer to command for description Keypad Status Query KEYST term keypad status gt term n 1 key pressed 0 no key pressed Returns keypad status since the last KEYST KEYST returns after initial power up Kelvin Reading Query KRDG term lt Kelvin value gt term nnnnnn Also see the RDGST command Remote Operation Omega Model CYD211 User s Manual LOCK Front Panel Keypad Lock Command Input Format Remarks Example LOCK state term n lt state gt 0 Unlocked 1 Locked Locks out all front panel entries Refer to Paragraph 3 10 LOCK 1 term Enables keypad lock LOCK Input Returned Format Front Panel Keypad Lock Query LOCK term lt state gt term n Refer to command for description RDGST Input Returned Format Remarks RELAY Input Reading Status Query RDGST term status bit weighting gt term nnn Integer returned represents sum of bit weighting of the input status flag bits 000 indicates a valid reading is present Bit Bit Weighting Status Indicator 2 A D not responding 2 4 Alarm low 3 8 Alarm high 4 16 Temperature under range 5 32 Temperature over range 6 64 Sensor units z
17. RS 232C Baud Rate 9600 BAUD Reading Rate To 7 readings per second Special Features User Curve Entry LabView Driver Connector DE 9 Alarms Number 2 High and Low Settings High Setpoint Low Setpoint Dead band Latching or Non Latching Alarm On Off Actuators Display message relays Introduction 1 3 Omega Model CYD211 User s Manual Interface Specifications Continued Relays Number 2 Contacts Normally Open NO Normally Closed NC and Common C Contact Rating 30 VDCat 1 A Settings manually off manually on follows alarms Connector DB 25 shares input connector Analog Output Isolation Output is not isolated from chassis ground Update Rate 7 readings per second Voltage Current Range 0 10 V 4 20 mA Resolution 0 15 mV 0 3 HA Accuracy 1 25 mV 2 5 pA Minimum Load Resistance 00 52 shen NA circuit protected Compliance Voltage NA 10 V Load Regulation NA 0 02 RDG 0 to 500 Q Scales Temperature Sensor Units Fixed by type 0 20 K Diodes 1 V 1V 0 100K 100 Q Platinum 1 V 100 2 0 200 K 1000 Q Platinum 1 V 1000 2 0 325 K NTC Resistor 1 V 1000 Q 0 475 K 0 1000K Settings Voltage or current scale Connector DB 25 shares input connector General Ambient Temperature 15 35 C 59 95 F at rated accuracy 10 40 C 50 104 F at reduced accuracy Power Requirement Regulated 5 VDC 300 mA 15 VDC 75 mA
18. SYMBOLS Direct current power line Alternating current power line Alternating or direct current power line Three phase alternating current power line Earth ground terminal Protective conductor terminal Frame or chassis terminal On supply Off supply Equipment protected throughout by double insulation or reinforced insulation equivalent to Class II of IEC 536 see Annex H Caution High voltages danger of electric shock Background color Yellow Symbol and outline Black Caution or Warning See instrument documentation Background color Yellow Symbol and outline Black Fuse I P P BO Or ede Introduction 1 9 Omega Model CYD211 User s Manual This Page Intentionally Left Blank 1 10 Introduction Omega Model CYD211 User s Manual CHAPTER 2 INSTALLATION 2 0 GENERAL This chapter provides general installation instructions for the Model CYD211 To ensure the best possible performance and to maintain operator safety please read the entire chapter before installing and operating the instrument Refer to Chapter 3 for operating instructions Refer to Chapter 4 for computer interface installation and operation 2 1 INSPECTION AND UNPACKING Inspect shipping containers for external damage before opening Photograph any container that has significant damage before opening it If there is visible damage to the contents of the container contact the shipping company and Omega imme
19. V with a resolution of 0 15 mV or 0 0015 of full scale The output can drive a resistive load of no less than 500 Q The output is short circuit protected so the instrument is not harmed if the load resistance 1s too small However this practice is not recommended as the additional load on the instrument power supply causes noise on internal circuits In current mode the analog output can vary from 4 to 20 mA with a resolution of 0 3 uA or 0 0015 of full scale The output is limited by a 10 V compliance voltage so the largest resistive load that the output can drive in current mode is 500 Q The output for the analog output is available from Pins 6 and 18 of the Input Output connector See Figure 2 3 The terminal marked analog output signal is the output voltage terminal the terminal marked analog output ground is the ground and is attached to chassis ground inside the instrument It is not recommended to attach the analog output ground to a ground outside the instrument The output should be read by an instrument with an isolated or differential input wherever possible Connecting to an external ground can cause noise in the analog output voltage or the sensor input measurement If this cannot be avoided try to keep the chassis of the two instruments at the same potential with a ground strap 27 RELAYS The Model CYD211 has two relays labeled high and low The relays are most commonly associated with the alarm feature The relays can a
20. function during front panel setup operations Do not use the front panel during serial communications Failure to follow these rules may result in inability to establish communication with the instrument or intermittent failures in communication 4 1 6 Serial Interface Basic Programs Two BASIC programs are included to illustrate the serial communication functions of the instrument The first program was written in Visual Basic Refer to Paragraph 4 1 6 1 for instructions on how to setup the program The Visual Basic code is provided in Table 4 3 The second program was written in Quick Basic Refer to Paragraph 4 1 6 2 for instructions on how to setup the program The Quick Basic code is provided in Table 4 4 Finally a description of operation common to both programs is provided in Paragraph 4 1 6 3 While the hardware and software required to produce and implement these programs not included with the instrument the concepts illustrated apply to almost any application where these tools are available 4 1 6 1 Visual Basic Serial Interface Program Setup The serial interface program Table 4 3 works with Visual Basic 6 0 VB6 on an IBM PC or compatible with a Pentium class processor A Pentium 90 or higher 1s recommended running Windows 95 or better with a serial interface It uses the COMI communications port at 9600 Baud Use the following to develop the Serial Interface Program in Visual Basic Start VB6 Choose Standard EXE and se
21. null modem cables and must be used between two DTE wired devices Null modem adapters are also available for use with straight through cables Paragraph 5 6 1 illustrates suggested cables that can be used between the instrument and common computers The instrument uses drivers to generate the transmission voltage levels required by the RS 232C standard These voltages are considered safe under normal operating conditions because of their relatively low voltage and current limits The drivers are designed to work with cables up to 50 feet in length 4 1 2 Hardware Support The Model CYD211 interface hardware supports the following features Asynchronous timing is used for the individual bit data within a character This timing requires start and stop bits as part of each character so the transmitter and receiver can resynchronized between each character Half duplex transmission allows the instrument to be either a transmitter or a receiver of data but not at the same time The serial output supports a communication speed of 9600 baud Hardware handshaking is not supported by the instrument Handshaking is often used to guarantee that data message strings do not collide and that no data is transmitted before the receiver is ready In this instrument appropriate software timing substitutes for hardware handshaking User programs must take full responsibility for flow control and timing as described in Paragraph 4 1 5 4 2 Remote Operation Ome
22. relay 2 setup indicated by the r on the left of the display Use the A or Y key to select the function of relay 2 from manually off c manually on an or following the high alarm ALA If the relay is set to follow the alarm it will turn on when the temperature goes above the high alarm setpoint Press the Enter key to store the relay setting The display will return to normal operation Operation 3 7 Omega Model CYD211 User s Manual 3 8 ANALOG OUTPUT SETUP The Model CYD211 has a single analog output It is normally configured to provide an analog signal proportional to temperature to a strip chart recorder or separate data acquisition system Pins 6 and 18 on the DB 25 Input Output connector are used for the analog output See Figure 2 3 The analog output is front panel configurable to be either a variable DC voltage or current source In voltage mode the analog output can vary from 0 to 10 V with a resolution of 0 15 mV or 0 0015 of full scale The output can drive a resistive load of no less than 500 2 The output is short circuit protected so the instrument is not harmed if the load resistance is too small However this practice 1s not recommended as the additional load on instrument power supplies causes noise on internal circuits In current mode the analog output can vary from 4 to 20 mA with a resolution of 0 2 uA or 0 001596 of full scale The output is limited by a 10 V compliance voltage so the largest
23. resistive load that the output can drive in current mode is 500 Q The analog output has two modes voltage and current and six ranges The ranges are listed in Table 3 3 The low output is the temperature that produces zero output 0 V or 4 mA and the high output is the temperature that produces full output 10 V or 20 mA If no curve is selected for the input the analog output range is fixed to output a signal proportional to sensor units Refer to Table 3 4 NOTE When a curve is selected for the input the analog output always works in units of Kelvin no matter what units are displayed To begin analog output setup press the Select key and use the A or V key to select GUEPUE and press the Enter key Analog output mode will be set up first Use the or Y key to choose between voltage mode or current mode Press the Enter key to store the analog output mode The next setting is analog output range Refer to Table 3 3 and use the A or Y key to select a range for the analog output Press the Enter key to store the analog output range The display will return to normal operation 3 8 Operation Omega Model CYD211 User s Manual Table 3 3 Analog Table 3 4 Analog Output Output Range Scales Scales In Sensor Units Range Low High Input Low High Numbe Output Output Type Output Output r 0 OK 20K Silicon Diode 0V 10 V 1 OK 100 K GaAlAs Diode 10 V 2 OK 200 K PT 100 250 0 1
24. 0 22 36 0 1 0747 23 20 0 1 1162 24 19 0 1 1290 25 18 0 1 1500 26 14 0 1 3161 27 12 0 1 3656 28 11 0 1 3850 29 10 0 1 4000 A 3 Omega Model CYD211 User s Manual Table A 4 Omega PT 100 1000 Platinum RTD Curves Break PT 100 PT 1000 point Temp K Ohms Q Temp K Ohms 2 1 030 0 3 820 030 0 38 20 2 032 0 4 235 032 0 42 35 3 036 0 5 146 036 0 51 46 4 038 0 5 650 038 0 56 50 5 040 0 6 170 040 0 61 70 6 042 0 6 726 042 0 67 26 7 046 0 7 909 046 0 79 09 8 052 0 9 924 052 0 99 24 9 058 0 12 180 058 0 121 80 10 065 0 15 015 065 0 150 15 11 075 0 19 223 075 0 192 23 12 085 0 23 525 085 0 235 25 13 105 0 32 081 105 0 320 81 14 140 0 46 648 140 0 466 48 15 180 0 62 980 180 0 629 80 16 210 0 75 044 210 0 750 44 17 270 0 98 784 270 0 987 84 18 315 0 116 270 315 0 1162 70 19 355 0 131 616 355 0 1316 16 20 400 0 148 652 400 0 1486 52 21 445 0 165 466 445 0 1654 66 22 490 0 182 035 490 0 1820 35 23 535 0 198 386 535 0 1983 86 24 585 0 216 256 585 0 2162 56 25 630 0 232 106 630 0 2321 06 26 675 0 247 712 675 0 2477 12 27 715 0 261 391 715 0 2613 91 28 760 0 276 566 760 0 2765 66 29 800 0 289 830 800 0 2898 30 A 4 Curve Tables WARRANTY DISCLAIMER OMEGA ENGINEERING INC warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase OMEGA s Warranty adds an additional one 1 month grace period to the normal one 1 year pro
25. 0 SD HT 2 420 K Rox Ruthenium Oxide RTD RX 102A 2 40K Rox Ruthenium Oxide RTD RX 202A 3 40K Sensors sold separately T Single excitation current may limit the low temperature range of NTC resistors 1 2 Introduction Omega Model CYD211 User s Manual 1 2 SPECIFICATIONS Thermometry Number of Inputs 1 Measurement Type 4 lead differential Excitation Constant current 10 pA or mA Isolation Measurement is not isolated from chassis ground A D Resolution 24 bit Input Accuracy Sensor dependent Refer to Table 1 2 Measurement Resolution Sensor dependent Refer to Table 1 2 Maximum Update Rate 7 readings per second Supported Sensors Diodes Silicon GaAlAs RTDs 100 Platinum 1000 Platinum Cernox Carbon Glass ROX Standard Curves DT 470 DT 670 CTI Curve C PT 100 PT 1000 User Curve One 200 point CalCurve or User curve in non volatile memory Settings Sensor Type Sensor Curve Input Connector DB 25 Front Panel Display Type 5 digit LED Display Units K C F V Q Display Update Rate Twice per second Temperature Display Resolution 0 001 between 0 99 999 0 01 between 100 999 99 0 1 above 1000 Sensor Units Display Resolution Sensor dependent to 5 digits Display Annunciators C F Keys Select Enter Up Arrow Y Down Arrow Front Panel Features Display Units Display Brightness Keypad Lockout Instrument Reset Interface Serial Interface Format
26. 1 measures temperature from 1 4 to 800 K and in difficult sensing conditions including high vacuum and magnetic fields Alarms relays user configurable analog voltage or current output and a serial interface are standard features on the Model CYD211 Backed by the Omega tradition of excellence in cryogenic and precision temperature measurement for science and industry the Model CYD211 is a good choice for liquefied gas storage monitoring cryopump control cryo cooler and materials science applications and for applications that require greater accuracy than thermocouples allow ENTER CYD211 Temperature Monitor J 211 LED Front bmp Figure 1 1 Model CYD211 Front Panel Introduction 1 1 Omega Model CYD211 User s Manual General Description Continued The Model CYD211 Temperature Monitor supports diode temperature sensors and resistance temperature detectors RTDs The Model CYD211 can be configured for the type of sensor in use from the instrument front panel Four lead differential measurement and 24 bit analog to digital conversion ensure high accuracy and 5 digit measurement resolution Temperature data can be read up to seven times per second over computer interface the display is updated twice each second The Model CYD211 converts voltage or resistance to temperature units based on temperature response curve data for the sensor in use Standard temperature response curves for silicon diodes and
27. 200A 100 Q logQ K 325 Negative 0 00001 090 Rox RX 102A Q logo K 40 Negative 0 00001 090 3 12 Operation Omega Model CYD211 User s Manual CHAPTER 4 REMOTE OPERATION 4 0 GENERAL The Model CYD211 is equipped with an RS 232C serial computer interface The interface allows computer automation of instrument setup and temperature measurement data collection Nearly every feature of the instrument can be accessed through the computer interface Interface capabilities including setup information and example programs are provided in Paragraph 4 1 Interface commands including a command summary are described in Paragraph 4 2 41 SERIAL INTERFACE OVERVIEW The serial interface used in the Model CYD211 is commonly referred to as an RS 232C interface RS 232C is a standard of the Electronics Industries Association EIA that describes one of the most common interfaces between computers and electronic equipment The RS 232C standard is quite flexible and allows many different configurations However any two devices claiming RS 232C compatibility cannot necessarily be plugged together without interface setup The remainder of this paragraph briefly describes the key features of a serial interface that are supported by the instrument A customer supplied computer with similarly configured interface port is required to enable communication 4 1 1 Physical Connection The Model CYD211 has a 9 pin D Subminiature plug on the rear p
28. 685 14 395 0 0 28701 43 095 0 0 98564 72 015 0 1 30404 15 380 0 0 32417 44 090 0 0 99565 73 013 5 1 33438 16 365 0 0 36111 45 085 0 1 00552 74 012 5 1 35642 17 345 0 0 41005 46 080 0 1 01525 75 011 5 1 38012 18 330 0 0 44647 47 075 0 1 02482 76 010 5 1 40605 19 325 0 0 45860 48 070 0 1 03425 TT 009 5 1 43474 20 305 0 0 50691 49 065 0 1 04353 78 008 5 1 46684 21 300 0 0 51892 50 058 0 1 05630 79 007 5 1 50258 22 285 0 0 55494 51 052 0 1 06702 80 005 2 1 59075 23 265 0 0 60275 52 046 0 1 07750 81 004 2 1 62622 24 250 0 0 63842 53 040 0 1 08781 82 003 4 1 65156 25 235 0 0 67389 54 039 0 1 08953 83 002 6 1 67398 26 220 0 0 70909 55 036 0 1 09489 84 002 1 1 68585 27 205 0 0 74400 56 034 0 1 09864 85 001 7 1 69367 28 190 0 0 77857 57 033 0 1 10060 86 001 4 1 69818 29 180 0 0 80139 58 032 0 1 10263 Curve Tables A 1 Omega Model CYD211 User s Manual Table A 2 Omega DT 670 Silicon Diode ponet bus Volts pit e Volts int s Volts 1 500 0 0 090570 26 870 1 01064 51 202 1 19475 2 491 0 0 110239 27 810 1 02125 52 17 10 1 24208 3 479 5 0 136555 28 75 0 1 03167 53 15 90 1 26122 4 4615 0 179181 29 69 0 1 04189 54 14 90 1 27811 5 425 5 0 265393 30 63 0 1 05192 55 14 00 1 29430 6 390 0 0 349522 31 564 1 06277 56 13 15 1 31070 7 346 0 0 452797 32 49 0 L07472 57 1235 1 32727 8 320 0 0 513393 33 387 1 09110 58 11 55 1 34506 9
29. If the sensor leads are shielded one end of the cable shield can be tied to the cryostat ground while the other end is tied to the shield pins on the Input Output connector If the sensor leads are not shielded the instrument chassis should be strapped to earth ground Installation 2 5 Omega Model CYD211 User s Manual 2 5 5 Sensor Polarity Omega sensors ship with instructions that indicate which sensor leads are which It is important to follow these instructions for plus and minus leads polarity as well as voltage and current when applicable Diode sensors do not operate in the wrong polarity They look like an open circuit to the instrument Two lead resistors can operate with any lead arrangement and the sensor instructions may not specify polarity Four lead resistors may depend more on lead arrangement Follow any specified lead assignment for four lead resistors Mixing leads could give a reading that appears correct but is not the most accurate DT 670 SD Diode Sensor Leads Cathode gage t 2 5 6 Four Lead Sensor Measurement All sensors including both two lead and four lead can be measured with a four lead technique Four lead measurement eliminates the effect of lead resistance on the measurement If it is not taken out lead resistance is a direct error when measuring a sensor Four Lead Diode Four Lead Platinum In a four lead measurement current leads and voltage leads run separately
30. MADE IN A YEAR C WARRANTY USA Shop online at omega com CEOMEGA WWW 0mega com e mail info omega com v SELECT ENTER CE OMEGA OMEGAROMETER CYD211 TEMPERATURE MONITOR CYD211 Single Input Temperature Monitor CEOMEGA OMEGAnet Online Service Internet e mail www omega com info omega com USA ISO 9001 Certified Canada Servicing North America One Omega Drive Box 4047 Stamford CT 06907 0047 Tel 203 359 1660 FAX 203 359 7700 e mail info omega com 976 Bergar Laval Quebec H7L 5A1 Canada Tel 514 856 6928 FAX 514 856 6886 e mail info omega ca For immediate technical or application assistance USA and Canada Mexico Benelux Czech Republic France Germany Austria United Kingdom ISO 9002 Certified Sales Service 1 800 826 6342 1 800 TC OMEGA Customer Service 1 800 622 2378 1 800 622 BEST Engineering Service 1 800 872 9436 1 800 USA WHEN TELEX 996404 EASYLINK 62968934 CABLE OMEGA En Espa ol 001 203 359 7803 e mail espanol omega com FAX 001 203 359 7807 info omega com mx Servicing Europe Postbus 8034 1180 LA Amstelveen The Netherlands Tel 31 0 20 3472121 FAX 31 0 20 6434643 Toll Free in Benelux 0800 0993344 e mail salesGomegaeng nl Frystatska 184 733 01 Karvina Czech Republic Tel 420 0 59 6311899 FAX 420
31. MUST OBTAIN AN AUTHORIZED RETURN AR NUMBER FROM OMEGA S CUSTOMER SERVICE DEPARTMENT IN ORDER TO AVOID PROCESSING DELAYS The assigned AR number should then be marked on the outside of the return package and on any correspondence The purchaser is responsible for shipping charges freight insurance and proper packaging to prevent breakage in transit FOR WARRANTY RETURNS please have FOR NON WARRANTY REPAIRS consult the following information available BEFORE OMEGA for current repair charges Have the contacting OMEGA following information available BEFORE 1 Purchase Order number under which contacting OMEGA the product was PURCHASED 1 Purchase Order number to cover the 2 Model and serial number of the product COST of the repair under warranty and 2 Model and serial number of the 3 Repair instructions and or specific product and problems relative to the product 3 Repair instructions and or specific problems relative to the product OMEGA s policy is to make running changes not model changes whenever an improvement is possible This affords our customers the latest in technology and engineering OMEGA is a registered trademark of OMEGA ENGINEERING INC Copyright 2003 OMEGA ENGINEERING INC All rights reserved This document may not be copied photocopied reproduced translated or reduced to any electronic medium or machine readable form in whole or in part without the prior written consent of OMEGA ENGINEERING INC
32. Model CYD211 6 1 MODELS A list of the available Temperature Monitor models are as follows Model Description Model CYD211 Temperature Monitor with 100 250 V 211S universal input 17 VA power supply Power Options VAC 120 Includes U S line cord VAC 220 Includes European line cord 6 2 ACCESSORIES A list of accessories available for the Model CYD211 are as follows Model Description of Accessory 106 253 Sensor input mating connector DB 25 106 264 Shell for sensor input mating connector 2111 Panel mount adapter for one CYD211 into 105 mm Wide x 132 mm High 4 1 x 5 2 inches mounting plate See Fig 2 4 2112 Panel mount adapter for two CYD211s into 105 mm Wide x 132 mm High 4 1 x 5 2 inches mounting plate See Fig 2 4 8000 CalCurve floppy disk Consists of a calibrated sensor breakpoint table on a floppy disk in ASCII format for customer download 8001 211 CalCurve factory installed Consists of a calibrated sensor breakpoint table factory installed into nonvolatile memory CAL 211 Instrument calibration with certificate CAL 211 DATA Instrument calibration with certificate and data MAN 211 User s manual Included with Model CYD211 Options amp Accessories 6 1 Omega Model CYD211 User s Manual 6 3 WIRES Common cryogenic wire available from Omega Other wire and installation accessories are also available P N Cable
33. Program Operation Continued The following are additional notes on using either Serial Interface program Ifyou enter a correctly spelled query without a nothing will be returned Incorrectly spelled commands and queries are ignored Commands and queries and should have a space separating the command and associated parameters Leading zeros and zeros following a decimal point are not needed in a command string but they will be sent in response to a query A leading is not required but a leading is required 41 7 X Trouble Shooting New Installation 1 Make sure transmit TD signal line from the instrument is routed to receive RD on the computer and vice versa Use a null modem adapter if not 2 Always send terminators 3 Send entire message string at one time including terminators Many terminal emulation programs do not 4 Sendonly one simple command at a time until communication is established 5 Besure to spell commands correctly and use proper syntax Old Installation No Longer Working 1 Power instrument off then on again to see if it is a soft failure 2 Power computer off then on again to see 1f communication port is locked up 3 Check all cable connections Intermittent Lockups 1 Check cable connections and length 2 Increase delay between all commands to 100 ms to make sure instrument is not being over loaded 3 Do not use the front panel keys during serial communicat
34. SCRIPTION aa sua aaa aa ua aaa asua sy 1 2 SPECIBICATIONG eet T SASS aa q a ays n aN 1 3 SAFETY SUMMARY 1 4 SAFETY SYMBOLES sene ep 2 INSTALLEATION T IT sociated uui D 2 0 GENERAL 5 si a E a us ERU OUR Ori a 2 1 INSPECTION AND UNPACKING a 2 2 REAR PANEL DEFINITION 2 3 POWER INPUT CONNECTOR 2 4 EXTERNAL POWER SUPPLY 2 5 SENSOR INPUT 2 5 1 Input Output Connector 2 5 2 Sensor Lead Cable Eee Aedes 2 5 3 Shielding Sensor 2 5 4 Instrument 2 5 5 Sensor 2 5 6 Four Lead Sensor Measurement 2 5 7 Two Lead Sensor Measurement 2 5 8 Lowering Measurement Noise 2 6 ANALOG OUTPUT I a enne 2 7 RELAYS u nutem deett 2 8 PANEL MOUNTING 15 2 sa eee 3 OPERATION nippa 2 2 22 1 1 2 7 dina 3 0 gt dotem tease UR ERST EI RU SH usa saa 3 1 TURNING POWER ON 3 2 DISPLAY DEFINITION 3 3 LED ANNUNCIATORS amp DISPLAY MESSAGES 3 2 3 4 KEYPAD DEFINITION eese 3 4 1 Key Descriptions 3 4 2 General Keypad Operation 3 5 INPUT SETUP 3 5 1 Input 3 5 2 Curve Selection t rget k val etd edes 3 5 3 Display Units Selection sese 3 6 ALARM SETUP AND OPERATION 3 7 RELAY SETUP
35. Where Do Find Everything Need for Process Measurement and Control OMEGA Of Course Shop online at www omega com TEMPERATURE A Thermocouple RTD amp Thermistor Probes Connectors Panels amp Assemblies Wire Thermocouple RTD amp Thermistor A Calibrators amp Ice Point References A Recorders Controllers amp Process Monitors LF Infrared Pyrometers PRESSURE STRAIN AND FORCE 4 Transducers amp Strain Gages Load Cells amp Pressure Gages 4 Displacement Transducers A Instrumentation amp Accessories FLOW LEVEL 4 Rotameters Gas Mass Flowmeters amp Flow Computers A Air Velocity Indicators 4 Turbine Paddlewheel Systems WY Totalizers amp Batch Controllers pH CONDUCTIVITY k pH Electrodes Testers amp Accessories k Benchtop Laboratory Meters 4 Controllers Calibrators Simulators amp Pumps Industrial pH amp Conductivity Equipment DATA ACQUISITION LF Data Acquisition amp Engineering Software LF Communications Based Acquisition Systems A Plug in Cards for Apple IBM amp Compatibles Datalogging Systems A Recorders Printers amp Plotters HEATERS Heating Cable LF Cartridge amp Strip Heaters 4 Immersion amp Band Heaters Z Flexible Heaters Laboratory Heaters ENVIRONMENTAL MONITORING AND CONTROL 4 Metering amp Control Instrumentation Refractometers Pumps amp Tubing lA Air Soil amp Water Monitors A Industrial Water amp Wa
36. and or query issued Remote Operation 4 13 Omega Model CYD211 User s Manual Table 4 5 Interface Commands Alphabetical Listing Command Function Page KIDN Identification Query a qasa 15 RST Reset Instrument Command 15 ALARM Input Alarm Parameter 15 ALARM Input Alarm Parameter Query a 16 ALMRST Alarm Reset Status Command 16 ANALOG Analog Output Parameter 16 ANALOG Analog Output Parameter 16 AOUT Analog Output Data Query see 16 BRIGT Display Brightness Command 17 BRIGT Display Brightness Query 17 CRDG Celsius Reading Query esse 17 CRVDEL Curve Delete Command see 17 CRVHDR Curve Header Command 17 CRVHDR Curve Header Q ety 18 CRVPT Curve Data Point Command 18 CRVPT Curve Data Point Query sse 18 DFLT Factory Defaults Command 19 DISPFLD Displayed Field Command 19 DISPFLD Displayed Field Query FRDG Fahrenheit Reading Query INCRV Input Curve Number Comman
37. anel for serial communication The original RS 232C standard specifies 25 pins but both 9 and 25 pin connectors are commonly used in the computer industry Many third party cables exist for connecting the instrument to computers with either 9 or 25 pin connectors Paragraph 5 6 gives the most common pin assignments for 9 and 25 pin connectors Please note that not all pins or functions are supported by the Model CYD211 The instrument serial connector is the plug half of a mating pair and must be matched with a socket on the cable If a cable has the correct wiring configuration but also has a plug end a gender changer can be used to mate two plug ends together Remote Operation 4 1 Omega Model CYD211 User s Manual Physical Connection Continued The letters DTE near the interface connector stand for Data Terminal Equipment and indicate the pin connection of the directional pins such as transmit data TD and receive data RD Equipment with Data Communications Equipment DCE wiring can be connected to the instrument with a straight through cable As an example pin 3 of the DTE connector holds the transmit line and pin 3 of the DCE connector holds the receive line so the functions complement It is likely both pieces of equipment are wired in the DTE configuration In this case pin 3 on one DTE connector used for transmit must be wired to pin 2 on the other used for receive Cables that swap the complementing lines are called
38. d INCRV Input Curve Number Query INTYPE Input Type Parameter Command INTYPE Input Type Parameter Query see KEYST Keypad Status KRDG Kelvin Reading Query eee LOCK Front Panel Keypad Lock Command 21 LOCK Front Panel Keypad Lock Query 21 RDGST Input Reading Status Query 21 RELAY Relay Control Parameter Command 21 RELAY Relay Control Parameter Query 22 SRDG Sensor Units Input Reading Query 22 4 14 Remote Operation 4 2 1 IDN Input Returned Format Example RST Input Remarks ALARM Input Format Remarks Example Remote Operation Omega Model CYD211 User s Manual Interface Commands In Alphabetical Order Identification Query IDN term lt manufacturer gt lt model gt lt serial gt lt date gt term aaaa aaaaaaaa aaaaaaa mmddyy manufacture Manufacturer ID model Instrument model number serial Serial number date Instrument firmware revision date LSCI MODEL211 1234567 013001 Reset Instrument Command RST term Sets instrument parameters to power up settings Input Alarm Parameter Command ALARM off on
39. d the instrument requires repair or recalibration Limit messages are most often associated with over voltage conditions caused by an improperly selected range or excessive noise on the measurement leads If these messages persist after the input or output is configured properly the instrument may require repair 5 1 1 Instrument Hardware Errors Err Gi Indicates that there is a hardware problem in the instrument memory This error is not correctable by the user and the factory should be consulted Err Ge Indicates there is a soft error in the instrument memory This error can be corrected reinitializing memory Reinitializing memory sets the instrument to defaults and erases the user curve To reinitialize the memory after an Error 02 press both the A and Y keys simultaneously The display will blank for about 5 seconds while the memory is initialized Err 83 Indicates the instrument has lost its calibration To continue using the instrument in an uncalibrated state press the Enter key after the Error 03 message appears The Error 03 message is not cleared and will be displayed again on power up until the unit is calibrated Err 0 Indicates that the A D converter is not communicating with the microprocessor This error is not correctable by the user Please contact the factory for instrument return information Service 5 1 Omega Model CYD211 User s Manual 5 1 2 Limit Errors 5 2 05 Input is at or under zero output 06 Input
40. defects OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER EXPRESS OR IMPLIED EXCEPT THAT OF TITLE AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED LIMITATION OF LIABILITY The remedies of purchaser set forth herein are exclusive and the total liability of OIVIEGA with respect to this order whether based on contract warranty negligence indemnification strict liability or otherwise shall not exceed the purchase price of the component upon which liability is based In no event shall OIMEGA be liable for consequential incidental or special damages CONDITIONS Equipment sold by OMEGA is not intended to be used nor shall it be used 1 as a Basic Component under 10 CFR 21 NRC used in or with any nuclear installation or activity or 2 in medical applications or used on humans Should any Product s be used in or with any nuclear installation or activity medical application used on humans or misused in any way OMEGA assumes no responsibility as set forth in our basic WARRANTY DISCLAIMER language and additionally purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product s in such a manner RETURN REQUESTS INQUIRIES Direct all warranty and repair requests inquiries to the OMEGA Customer Service Department BEFORE RETURNING ANY PRODUCT S TO OMEGA PURCHASER
41. diately preferably within 5 days of receipt of goods Keep all damaged shipping materials and contents until instructed to either return or discard them Open the shipping container and keep the container and shipping materials until all contents have been accounted for Check off each item on the packing list as it is unpacked Instruments may be shipped as several parts The items included with the Model CYD211 are listed as follows Items Included with Model CYD211 Temperature Monitor Model CYD211 Instrument Model CYD211 User s Manual Input Output Mating Connector and Shell Panel Mount Hardware Installed at Factory Universal Input Power Supply Line Power Cord Contact Omega immediately if there is a shortage of parts or accessories Omega is not responsible for any missing items if not notified within 60 days of shipment Inspect all items for both visible and hidden damage that occurred during shipment If damage is found contact Omega immediately for instructions on how to file a proper insurance claim Omega products are insured against damage during shipment but a timely claim must be filed before Omega will take further action Procedures vary slightly with shipping companies Keep all shipping materials and damaged contents until instructed to either return or discard them Installation 2 1 Omega Model CYD211 User s Manual 2 2 REAR PANEL DEFINITION This paragraph describes the connectors on the rear panel of th
42. duct warranty to cover handling and shipping time This ensures that OMEGA s customers receive maximum coverage on each product If the unit malfunctions it must be returned to the factory for evaluation OMEGA s Customer Service Department will issue an Authorized Return AR number immediately upon phone or written request Upon examination by OMEGA if the unit is found to be defective it will be repaired or replaced at no charge OMEGA s WARRANTY does not apply to defects resulting from any action of the purchaser including but not limited to mishandling improper interfacing operation outside of design limits improper repair or unauthorized modification This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corrosion or current heat moisture or vibra tion improper specification misapplication misuse or other operating conditions outside of OMEGA s control Components which wear are not warranted including but not limited to contact points fuses and triacs OMEGA is pleased to offer suggestions on the use of its various products However OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA either verbal or written OMEGA warrants only that the parts manufactured by it will be as specified and free of
43. e Figure 2 5 Panel bmp Figure 2 4 Panel Mounting Details Installation 2 9 Omega Model CYD211 User s Manual 2111 Option Single DIN Panel Adapter 91 x 44 mm Mount 3 6 x 1 7 in Cutout 16 5 mm 0 65 in 6 4 mm 5mm 0 25 in 0 2 in 18 hole 1412 hole 4 places 2 places 91 x 44 mm 3 6 x 1 7 in Cutout 2 2112 Option E E Dual DIN m Panel Adapter 3 6 x 1 7 in Mount Cutout 105 mm 4 1 in Cutout Panels bmp Figure 2 5 2111 and 2112 Panel Mount Adapters 2 10 Installation Omega Model CYD211 User s Manual CHAPTER 3 OPERATION 3 0 GENERAL This chapter provides operating instructions for most features of the Model CYD211 Temperature Monitor Corresponding computer interface instructions for these features are provided in Chapter 4 3 1 INSTRUMENT POWER The Model CYD211 is powered on by plugging in the power supply There is no power switch on the instrument When the Model CYD211 is powered on every segment on the display will illuminate for a few seconds to indicate instrument initialization Most of the instrument setup parameter values are retained when powered off with one exception The latching alarm will reset itself on power up When the instrument is powered on for the first time parameter values are set to their defaults listed in Table 3 6 When initialization is complete the instrument will begin its normal reading cycle and temperature or sensor units readings sh
44. e Model CYD211 See Figure 2 1 Readers are referred to paragraphs that contain installation instructions and connector pin outs for each feature A summary of connector pin outs is provided in Paragraph 5 6 CAUTION Only make rear panel connections with power supply disconnected e SERIAL I O DTE 211 Rearbmp Description Details 1 POWER 5 pin DIN Paragraph 2 3 Figure 5 2 2 SERIAL I O DTE DE 9 Paragraph 4 1 1 Figure 5 4 3 INPUT OUTPUT DB 25 Paragraphs 2 4 2 6 Figure 5 3 Figure 2 1 Model CYD211 Rear Panel 2 3 POWER INPUT CONNECTOR Power is supplied to the Model CYD211 through a 5 pin DIN connector located on the rear panel of the instrument There is no power switch on the instrument so it is off when not plugged in or on when plugged in Make sensor connections before applying power to the instrument The instrument requires 5 V at 300 mA 15 V at 75 mA and 15 V at 15 mA Refer to Figure 2 2 for pin out descriptions 2 2 Installation Omega Model CYD211 User s Manual POWER INPUT CONNECTOR Continued WARNING To prevent electrical fire or shock hazards do not expose this instrument or its power supply to rain or excess moisture Pin Description Ground Ground 5V 15V 15V NM R O N Power Figure 2 2 Power Connector 2 4 EXTERNAL POWER SUPPLY The Model CYD211 comes with the universal input powe
45. ega Model CYD211 User s Manual 3 5 INPUT SETUP 3 5 1 Input Type The Model CYD211 supports a variety of temperature sensors sold by Omega and other manufactures An appropriate sensor type must be selected for the input Refer to Table 3 1 for a list of common sensor types Ifa particular sensor is not listed in the Input Type selection look at Table 3 1 to find a sensor with similar range and excitation To select sensor type press the Select key use the or Y keys to select inPUE then press the Enter key Use the A or Y keys to cycle through the sensor types shown in Table 3 1 When the desired type appears press the Enter key Proceed to Paragraph 3 5 2 to select a temperature curve or press the Select key to return to the normal display Table 3 1 Sensor Input Types Display Input Excit Sensor Curve Coef Omega Message Type ation Type Format ficient Sensors DT 470 5 2 5V 10 Silicon Diode V K Neg DT 670 Gallium Aluminum x r 2 GRALAS 7 5 10 pA Atsenide V K Neg TG 120 Series Diode 100 Q Plat 250 2500 Ima RTP lt 675K PT 100 Series Rhodium Iron Platinum RTD S RF 800 100 OPlat Rhodium Iron nn a 500 Pt 500 Q 1mA RTD gt 675K 1000 Plat 0 50000 1 Q K Pos Cernox High Negative Temp Cernox Temperature Carbon Glass ntertd 7500 2 10HA Coefficient log R K Neg Germanium NTC RTD Rox and Thermox
46. end button state Private Sub cmdSend Click gSend True End Sub Routine to handle Send button press Set Flag to True Private Sub Form Load Main code section Dim strReturn As String Dim strHold As String Dim Term As String Dim ZeroCount As Integer Dim strCommand As String frmSerial Show Term Chr 13 amp Chr 10 ZeroCount 0 strReturn strHold If frmSerial MSComm1 PortOpen True Then frmSerial MSComm1 PortOpen False End If frmSerial MSComm1 CommPort 1 frmSerial MSComm1 Settings 9600 0 7 1 frmSerial MSComml InputLen 1 frmSerial MSComml PortOpen True Do Do DoEvents Loop Until gSend True gSend False strCommand frmSerial txtCommand Text strReturn strCommand UCase strCommand If strCommand EXIT Then End End If Used to return response Temporary character space Terminators Counter used for Timing out Data string sent to instrument Show main window Terminators are lt CR gt lt LF gt Initialize counter Clear return string Clear holding string Close serial port to change settings Example of Comm 1 Baud Parity Data Stop Read one character at a time Open port Wait loop Give up processor to other events Loop until Send button pressed Set Flag as false Get Command Clear response display Set all characters to upper case Get out on EXIT Program continues on the next page 4 8 Remote Operati
47. ero 7 128 Sensor units over range Relay Control Parameter Command Input Format Example RELAY relay number mode term n n lt relay number gt Specifies which relay to configure 1 low alarm relay 2 high alarm relay lt mode gt Specifies relay mode 0 Off 1 On 2 Alarms RELAY 1 2 term Low alarm relay activates when low alarm activates Remote Operation 4 21 RELAY Input Format Returned SRDG Input Returned Format Remarks 4 22 Omega Model CYD211 User s Manual Relay Control Parameter Query RELAY relay number term n relay number Specifies which relay to query 1 low alarm relay 2 high alarm relay n Refer to command for description Sensor Units Input Reading Query SRDG term sensor units value gt term nnnnnn Also see the RDGST command Remote Operation Omega Model CYD211 User s Manual CHAPTER 5 SERVICE 5 0 GENERAL This chapter provides basic service information for the Model CYD211 Temperature Monitor Factory trained service personnel should be consulted if the instrument requires repair 5 1 ERROR MESSAGES The following messages appear on the instrument display when it identifies a problem during operation The messages are divided into two groups Instrument hardware messages are related to the instruments internal circuits or non volatile memory If one of these messages persists after power is cycle
48. experiment The dead band parameter can prevent relays from turning on and off repeatedly when the sensor input reading is near an alarm setpoint Example If the high alarm setpoint 100 K and the dead band 1 K the high alarm triggers when sensor input temperature increases to 100 K and it will not deactivate until temperature drops to 99 K To begin alarm setup press the Select key and use the or Y key to select ALA and press the Enter key Use the A or Y key to turn the alarm function on or off If the alarm function is powered on the alarm will continue with alarm setup otherwise no other settings need to be made and the display will return to normal operation 3 6 Operation Omega Model CYD211 User s Manual Alarm Setup and Operation Continued The next setting is the high alarm point indicated by a H on the left of the display The high alarm setpoint is always set in units of Kelvin Use the A or Y key to set the high alarm setpoint Holding the button in will increase the rate of change The minimum value is 0 K and the highest is 999 9 K Press the Enter key to store the high alarm setpoint The next setting is the low alarm setpoint indicated by a L on the left of the display Its setting 1s similar to the high alarm setpoint listed above Press the Enter key to store the low alarm setpoint The next setting is the alarm deadband indicated by a d on the left of the display Its setting is similar t
49. for NTC resistive sensors Limit Temperature limit in Kelvin for the curve Default is 375 K This limit is not used in this instrument but is left in to be compatible with Omega temperature controllers Temperature Coefficient The unit derives the temperature coefficient from the first two breakpoints The coefficient sent by the user is ignored If it is not correct when the curve header is queried check for proper entry of those points positive coefficient P indicates that the sensor signal increases with increasing temperature A negative coefficient N indicates that the sensor signal decreases with increasing temperature The power must be cycled or the RST command issued for the instrument to calculate the temperature coefficient after curve points have been entered Operation 3 11 Omega Model CYD211 User s Manual 3 13 2 Curve Breakpoints Temperature response data of a calibrated sensor must be reduced to a table of breakpoints before entering it into the instrument Each breakpoint consists of one value in sensor units and one temperature value in Kelvin Linear interpolation is used by the instrument to calculate temperature between breakpoints From 2 to 200 breakpoints can be entered as a curve The instrument will show an error message on the display if the sensor input is outside the range of the breakpoints No special endpoints are required Sensor units are defined by the format setting in Table 3 7 Breakpoint
50. ga Model CYD211 User s Manual 4 1 3 Character Format A character is the smallest piece of information that can be transmitted by the interface Each character is 10 bits long and contains data bits bits for character timing and an error detection bit The instrument uses 7 bits for data in the ASCII format One start bit and one stop bit are necessary to synchronize consecutive characters Parity is a method of error detection One parity bit configured for odd parity is included in each character ASCII letter and number characters are used most often as character data Punctuation characters are used as delimiters to separate different commandis or pieces of data Two special ASCII characters carriage return CR ODH and line feed LF 0AH are used to indicate the end of a message string Table 4 1 Serial Interface Specifications Connector Type 9 pin D style plug Connector Wiring DTE Voltage Levels EIA RS 232C Specified Transmission Distance 50 feet maximum Timing Format Asynchronous Transmission Mode Half Duplex Baud Rate 9600 Handshake Software timing Character Bits 1 Start 7 Data 1 Parity 1 Stop Parity Odd Terminators CR ODH LF 0AH Command Rate 20 commands per second maximum 4 1 4 Message Strings A message string is a group of characters assembled to perform an interface function There are three types of message strings commands queries and responses The computer issues command and que
51. he display returns to normal operation Operation Omega Model CYD211 User s Manual 3 13 CURVE ENTRY AND STORAGE The Model CYD211 has standard curve locations numbered 1 thru 20 At present not all locations are occupied by curves the others are reserved for future updates Standard curves can not be changed by the user and reserved locations are not available for user curves The Model CYD211 has one user curve location The user curve can only be entered using the serial interface Refer to Paragraph 4 2 for the serial interface curve commands The user curve location can hold from 2 to 200 data pairs breakpoints including a value in sensor units and a corresponding value in Kelvin 3 13 1 Curve Header Parameters Each curve has a set of parameters that are used for identification and to allow the instrument to use the curve effectively The parameters must be set correctly before a curve can be used for temperature conversion Curve Number 1 21 Location 21 is for the user curve Name Up to a 15 character name can be entered Serial Number Up to a 10 character sensor serial number consisting of both numbers and letters Format The format parameter tells the instrument what breakpoint data format to expect Different sensor types require different formats Formats for Omega sensors are V K Volts vs Kelvin for Diode sensors Q K Resistance vs Kelvin for platinum RTD sensors Log Q K Log Resistance vs Kelvin
52. hock hazard the optional instrument power supply is equipped with a 3 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 Do Not Operate In An Explosive Atmosphere Do not operate the instrument in the presence of flammable gases or fumes Operation of any electrical instrument in such an environment constitutes a definite safety hazard Keep Away From Live Circuits Operating personnel must not remove instrument covers Refer component replacement and internal adjustments to qualified maintenance personnel Do not replace components with power cable connected To avoid injuries always disconnect power and discharge circuits before touching them 1 8 Introduction Omega Model CYD211 User s Manual Safety Summary Continued Do Not Substitute Parts Or Modify Instrument Do not install substitute parts or perform any unauthorized modification to the instrument Return the instrument to an authorized Omega representative for service and repair to ensure that safety features are maintained Cleaning Do not submerge instrument Clean only with a damp cloth and mild detergent Exterior only 1 4 SAFETY
53. ide the cryostat In theses cases the cable shield should still be used on the room temperature sensor leads up to the cryostat A shield is most effective when it is near the measurement potential so the Model CYD211 offers a shield pin on the Input Output Connector that stays close to the measurement The shield pin is tied to chassis ground and should be used as the connection point for the sensor cable shield Depending on how the instrument is grounded the shield may or may not need to be terminated at the opposite end See Section 2 5 4 below on instrument grounding 2 5 4 Instrument Grounding The Model CYD211 does not provide isolation between measurement circuits and chassis ground The measurement leads have a finite impedance to chassis ground and should not be tied to ground outside the instrument or an error in reading may result The Model CYD211 has the best noise performance when the chassis is tied to earth ground This connection should be made at only one point so as to avoid ground loops Many power supplies connect the common pins to earth ground When using this configuration it should be the only connection between the Model CYD211 and earth ground If the sensor leads are shielded the cable shield should be tied to the shield pins on the Input Output connector but should not be terminated at the other end If the power supply does not connect the common pins to earth ground the connection should be made externally
54. industry Sensors within the DT 670 series are interchangeable to the Curve DT 670 6 2 Options amp Accessories Omega Model CYD211 User s Manual APPENDIX A CURVE TABLES A1 0 GENERAL The following curve tables are applicable to the CYD211 Temperature Monitor Curve 1 DT 470 Silicon Diode Table A 1 Curve 2 DT 670 Silicon Diode Table A 2 Curve 3 CTI Curve C Silicon Diode Table A 3 Curve 6 PT 100 Platinum RTD ttt Table A 4 Curve 7 PT 1000 Platinum RTD Table A 4 Table A 1 Omega DT 470 Silicon Diode Curve 10 um bes Volts pins bos Volts Sn bos Volts 1 475 0 0 09062 30 170 0 0 82405 59 031 0 1 10476 2 470 0 0 10191 31 160 0 0 84651 60 030 0 1 10702 3 465 0 0 11356 32 150 0 0 86874 61 029 0 1 10945 4 460 0 0 12547 33 145 0 0 87976 62 028 0 1 11212 5 455 0 0 13759 34 140 0 0 89072 63 027 0 1 11517 6 450 0 0 14985 35 135 0 0 90161 64 026 0 1 11896 7 445 0 0 16221 36 130 0 0 91243 65 025 0 1 12463 8 440 0 0 17464 37 125 0 0 92317 66 024 0 1 13598 9 435 0 0 18710 38 120 0 0 93383 67 023 0 1 15558 10 430 0 0 19961 39 115 0 0 94440 68 022 0 1 17705 11 420 0 0 22463 40 110 0 0 95487 69 021 0 1 19645 12 410 0 0 24964 41 105 0 0 96524 70 019 5 1 22321 13 400 0 0 27456 42 100 0 0 97550 71 017 0 1 26
55. ing per C of reading per C 45 mK at 30 K 60 mK at 30 K 9 mK at 4 2 K 38 mK at 77 53 mK at 77 K 138 mK at 77 1 284 K at 300K i Recommended for T gt 40K amp B lt 2 5T Recommended for T gt 40K amp B lt 2 5T Recommended for T gt 2K amp B lt 19T No longer available from Omega Specified accuracy includes no effects of thermal EMF voltages An error of 3 mQ results from each uV of thermal EMF voltage In well designed systems thermal EMF voltage should be lt 10 pV Introduction 1 7 Omega Model CYD211 User s Manual 1 3 SAFETY SUMMARY Observe these general safety precautions during all phases of instrument operation service and repair Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design manufacture and intended instrument use Omega assumes no liability for Customer failure to comply with these requirements The Model CYD211 protects the operator and surrounding area from electric shock or burn mechanical hazards excessive temperature and spread of fire from the instrument The Model CYD211 is designed for indoor use only Improper use of the instrument may pose a hazard to the operator and surrounding area The power supply included with the Model CYD211 meets or exceeds the International Safety Standard for Information Technology Equipment IEC 60950 Ground The Instrument To minimize s
56. ion 42 SERIAL INTERFACE COMMAND SUMMARY This paragraph provides a summary of the Serial Interface Commands The Interface Commands are detailed in Paragraph 4 2 1 A list of all commands is provided in Table 4 5 4 12 Remote Operation Omega Model CYD211 User s Manual Serial Interface Command Summary Continued Form of the command input Brief description of command Command name BRIGT Display Brightness Command Input BRIGT lt bright gt term Format nn Syntax of idi bright Sets the display parameter input brightness Valid See Key below entries 0 15 0 least bright 15 most Definition of parameter bright Default 8 Commands may additionally include Remarks and Examples Command eps Brief description of query Query name Form of the query input BRIGT Display Brightness Query Input BRIGT lt input gt term Definition of Returned lt bright gt term returned parameter AN refer to command for description Syntax of returned parameter Query eps Key Begins common interface command Required to identify queries aa String of alpha numeric characters nn String of number characters that may include a decimal point term Terminator characters lt gt Indicated a parameter field many are command specific lt state gt Parameter field with only On Off or Enable Disable states value Floating point values can have a varying resolution depending on the type of comm
57. is at or over full scale 01 Temperature conversion is off the low end of curve 08 Temperature conversion is off the high end of curve 09 No curve is selected for the input OPENING THE ENCLOSURE WARNING To avoid potentially lethal shocks disconnect the power cord from the instrument before performing this procedure Only qualified personnel should perform this procedure REMOVAL 1 Disconnect the power cord from rear of unit 2 Ifattached remove from panel mount 3 Usea Phillips screwdriver to remove the four flat head screws from the corners of the rear panel 4 Slide out the PC board assembly The rear panel is attached to the PC board INSTALLATION 1 Slide the PC board assembly in from the rear of the chassis making sure the keypad aligns with the holes in the front panel 2 Usea Phillips screwdriver to install four flat head screws in the corners of the rear panel 3 Ifrequired replace the instrument in the panel mount opening 4 Connect power cord to rear of the unit 5 2 Service Omega Model CYD211 User s Manual 5 3 FIRMWARE REPLACEMENT There is one integrated circuit IC that may potentially require replacement See Figure 5 1 for IC location Firmware Microcontroller U1 Contains the software that runs the entire instrument Has a sticker on top labeled M211F HEX and a version number or date Use the following procedure to replace this IC 1 Follow the enclosure REMOVAL procedu
58. it VA The display units are in sensor units either volts or ohms depending on input type Alarm messages are displayed alternately with the reading when an alarm condition exists If both a high and low alarm condition exists can only happen when latching alarms are active then the display will alternate between the current reading and the alarm high and alarm low messages Other display messages are described in Paragraph 5 3 Alarm Messages FLA H Indicates that the high alarm is active ALA L Indicates that the low alarm is active 3 2 Operation Omega Model CYD211 User s Manual 3 4 KEYPAD DEFINITION The Model CYD211 has 4 keys on the front panel to setup instrument functions A list of front panel setup operations is shown in the Model CYD211 Menu Structure located on the inside back cover of this manual 3 4 1 Key Descriptions A The up arrow serves two functions to choose between parameters during setting operations and to increment numerical data Holding the button in while setting numerical data increases setting speed v The down arrow serves two functions to choose between parameters during setting operations and to decrement numerical data Holding the button in while setting numerical data increases setting speed Select Places the instrument into settings mode where all instrument parameters can be setup When pressed while in the settings mode it terminates the settings mode without changing the existing pa
59. l Interface Program Timerl Enabled False Interval 10 4 6 Remote Operation Omega Model CYD211 User s Manual Visual Basic Serial Interface Program Setup Continued 12 Add code provided in Table 4 3 13 14 15 a b In the Code Editor window under the Object dropdown list select General Add the statement Public gSend as Boolean Double Click on cmdSend Add code segment under Private Sub cmdSend Click as shown in Table 4 3 In the Code Editor window under the Object dropdown list select Form Make sure the Procedure dropdown list is set at Load The Code window should have written the segment of code Private Sub Form Load Add the code to this subroutine as shown in Table 4 3 Double Click on the Timer control Add code segment under Private Sub Timer as shown in Table 4 3 Make adjustments to code if different Com port settings are being used Save the program Run the program The program should resemble the following w Serial Interface Program C x Type exit ta end program Command Response Type in a command or query in the Command box as described in Paragraph 4 1 6 3 16 Press Enter or select the Send button with the mouse to send command 17 Type Exit and press Enter to quit Remote Operation 4 7 Omega Model CYD211 User s Manual Table 4 3 Visual Basic Serial Interface Program Public gSend As Boolean Global used for S
60. lect Open Resize form window to desired size PoP On the Project Menu click Components to bring up a list of additional controls available in VB6 5 Scroll through the controls and select Microsoft Comm Control 6 0 Select OK In the toolbar at the left of the screen the Comm Control will have appeared as a telephone icon 6 Select the Comm control and add it to the form 7 Add controls to form a Add three Label controls to the form b Add two TextBox controls to the form c Add one CommandButton control to the form d Add one Timer control to the form 8 View Menu select Properties Window Remote Operation 4 5 Omega Model CYD211 User s Manual Visual Basic Serial Interface Program Setup Continued Labeli Command1 Serial Interface Program Label3 Label2 9 In the Properties window use the dropdown list to select between the different controls of the current project 10 Set the properties of the controls as defined in Table 4 2 11 Save the program Table 4 2 Serial Interface Program Control Properties Current Name Property New Value Labell Name IbIExitProgram Caption Type exit to end program Label2 Name 1blCommand Caption Command Label3 Name 1blResponse Caption Response Name txtCommand Text lt blank gt Text2 Name txtResponse Text lt blank gt Command Name cmdSend Caption Send Default True Form1 Name frmSerial Caption Seria
61. lso be placed in manual mode and controlled directly by the user from the front panel or over the computer interface Refer to Paragraph 3 7 and the RELAY command in Chapter 4 Normally Open N O Normally Closed N C and Common COM contacts are available for each relay All contacts including common are isolated from the measurement and chassis grounds of the instrument If a relay is inactive Off it will be in its normal state of open or closed When the relay is active On it will be in the opposite state Relay connections are available on the Input Output connector See Figure 2 3 2 8 Installation Omega Model CYD211 User s Manual 2 8 PANEL MOUNTING The Model CYD211 can be easily panel mounted using the panel mount brackets included The Model CYD211 fits in a 91 x 44 mm 3 6 x 1 7 inch cutout To panel mount the instrument unplug the unit and then use a inch hex wrench to remove the 2 set screws holding the brackets in place Remove the 2 panel mount brackets by sliding them towards the rear of the unit Then place the unit into the panel cutout Slide the two panel mount brackets back into the case of the instrument Reinstall the 2 set screws and tighten them until the instrument is secure The Model CYD211 can also be purchased with either of two panel mount adapters The Model CYD2111 or 2112 will mount 1 or 2 Temperature Monitors in a 1 4 DIN cutout measuring 105 mm Wide x 132 mm High 4 1 x 5 2 inches Se
62. nd for description Returns a standard or user curve header Curve Data Point Command CRVPT lt curve gt lt index gt temp value gt term nn nnn nnnnnnn tnnnnnnn curve Specifies which curve to configure Valid entry 21 index Specifies curve points index Valid entries 1 200 lt units value gt Specifies sensor units for point to 6 digits lt temp value gt Specifies the corresponding temperature in Kelvin for this point to 6 digits Configures a user curve data point To finalize curve entry send the RST command or cycle the instrument power after all the curve points have been entered CRVPT 21 2 0 10191 470 000 term Sets User Curve 21 second data point to 0 10191 sensor units and 470 000 K units value Curve Data Point Query CRVPT curve index term nn nnn curve Specifies which curve to query 1 21 index Specifies the points index in the curve 1 200 units value temp value gt term nnnnnnn nnnnnnn Refer to command for description Returns a standard or user curve data point Remote Operation DFLT Input Remarks DISPFLD Input Format Example DISPFLD Input Returned Format FRDG Input Returned Format Remarks INCRV Input Format Remarks Example Remote Operation Omega Model CYD211 User s Manual Factory Defaults Command DFLT 99 term Sets all configuration values to factory defaults and resets the ins
63. o the high and low alarm point settings except that the maximum value that can be set is 99 9 K Press the Enter key to store the alarm deadband The final setting is alarm latching The display will show LEC H along with the setting 0 indicating that the latch function is turned off anda indicating that it is turned on Use the A or Y key to set the alarm latching status Press the Enter key to store the alarm latching status The display will return to normal operation 3 7 RELAY SETUP There are two relays on the CYD211 numbered 1 and 2 They are most commonly thought of as alarm relays but they may be manually controlled The relays are rated for 30 VDC and 1 A The terminals are in the Input Output connector on the CYD211 rear panel See Figure 2 3 When using relays with alarm operation set up the alarms first Paragraph 3 6 Relay 1 is tied to the low alarm operation and relay 2 is tied to the high alarm operation To begin relay setup press the Select key and use the A or Y key to select ELAY and press the Enter key Relay 1 will be setup first indicated by the r P on the left of the display Use the A or Y key to select the function of relay 1 from manually off 1 aFF manually on r an or following the low alarm ALA If the relay is set to follow the alarm it will turn on when the temperature drops below the low alarm setpoint Press the Enter key to store the relay setting The next setting is the
64. ommand ANALOG mode lt range gt term n n lt mode gt Specifies mode in which analog output operates where 0 voltage mode and 1 current mode lt range gt Sets temperature range that analog output uses as full scale 0 0 20K 3 0 325K 1 0 100K 4 0 475K 2 0 200 5 0 1000 K ANALOG 0 term Sets analog output to voltage mode 0 10V 100 0 K at 100 output 10 0 V and 0 0 Kat 0 output 0 0 V Analog Output Parameter Ouery ANALOG term lt mode gt lt range gt term n n Refer to command for definition Analog Output Data Query AOUT term lt analog output gt term Tnnn nn Returns the percentage of output of the analog output Remote Operation BRIGT Input Format BRIGT Input Returned Format CRDG Input Returned Format Remarks CRVDEL Input Format CRVHDR Input Format Remarks Omega Model CYD211 User s Manual Display Brightness Command BRIGT bright term nn bright Sets display brightness Valid entries 0 15 0 least bright 15 most bright Default 8 Display Brightness Query BRIGT term lt bright gt term nn Refer to command for description Celsius Reading Query CRDG term lt temp value gt term nnnnnn Also see the RDGST command Curve Delete Command CRVDEL lt curve gt term nn lt curve gt Specifies user curve to delete Only valid entry is 21 Curve number is used to retain com
65. on Omega Model CYD211 User s Manual Table 4 3 Visual Basic Serial Interface Program Continued frmSerial MSComml Output strCommand amp Term Send command to instrument If InStr strCommand lt gt 0 Then Check to see if query While ZeroCount lt 20 And strHold Chr 10 Wait for response If frmSerial MSComm1 InBufferCount 0 Then 1 to timeout if no character frmSerial Timer Enabled True Do DoEvents Wait for 10 millisecond timer Loop Until frmSerial Timer Enabled False ZeroCount ZeroCount 1 Timeout at 2 seconds Else ZeroCount 0 Reset timeout for each character strHold frmSerial MSComml Input Read in one character strReturn strReturn strHold Add next character to string End If Wend Get characters until terminators If strReturn Then Check if string empty strReturn Mid strReturn 1 InStr strReturn Term 1 Strip terminators Else strReturn No Response Send No Response End If frmSerial txtResponse Text strReturn Put response in textbox on main form strHold Reset holding string ZeroCount 0 Reset timeout counter End If Loop End Sub Private Sub Timerl Timer Routine to handle Timer interrupt frmSerial Timerl Enabled False Turn offtimer End Sub Remote Operation 4 9 Omega Model CYD211 User s Manual 4 1 6 2 Quick Basic Serial Interface Program Setup The serial interface program Table 4 4 works with QuickBasic 4 0 4 5 or
66. ould appear on the display Messages will appear in the reading location on the display if the measurement input has not been fully configured Messages listed in Paragraph 5 3 1 Instrument Hardware Errors are related to the instrument hardware and may require help from Omega service The messages listed in Paragraph 5 3 2 Limit Errors do not indicate a problem with the instrument and will disappear when input setup is complete The Model CYD211 should be allowed to warm up for a minimum of 30 minutes to achieve rated accuracy 3 2 DISPLAY DEFINITION The Model CYD211 has a 6 digit LED display capable of showing both numeric and character data In normal operation the display shows the current sensor reading in sensor units or temperature units The four annunciators below the right hand side of the display indicate what units the display is reading in Other display configurations appear during parameter setting and data entry operations These displays are illustrated in their individual operation paragraphs Operation 3 1 Omega Model CYD211 User s Manual LLLI LL SELECT ENTER CYD211 LM Monitor 211 Display eps Figure 3 1 Model CYD211 Display 3 3 LED ANNUNCIATORS AND DISPLAY MESSAGES The display units are indicated using LED annunciators below the right side of the main display LED Annunciators C The display units are in degrees Celsius K The display units are in Kelvin F The display units are in degrees Fahrenhe
67. patibility with existing instrument line Curve number 21 must be sent with the command or else the command will be ignored Curve Header Command CRVHDR lt curve gt lt name gt lt SN gt lt format gt lt limit value gt lt coefficient gt term nn aaaaaaaaaaaaaaa aaaaaaaaaa n nnn nnn n curve Specifies user curve Valid entry 21 lt name gt Curve name Limited to 15 characters lt SN gt Curve serial number Limited to 10 characters lt format gt Curve data format Valid entries 2 3 4 log Q K lt limit value gt Curve temperature limit in Kelvin Unused lt coefficient gt Curves temperature coefficient Valid entries 1 negative 2 positive Configures the user curve header Remote Operation 4 17 Omega Model CYD211 User s Manual Curve Header Command Continued Example CRVHDR Input Format Returned Format Remarks CRVPT Input Format Remarks Example CRVPT Input Format Returned Format Remarks CRVHDR 21 DT 470 00011134 2 325 0 1 term Configures User Curve 21 with a name of DT 470 serial number of 00011134 data format of volts versus Kelvin upper temperature limit of 325 K and negative coefficient Curve Header Query CRVHDR curve term nn curve Valid entries 1 21 lt name gt lt SN gt lt format gt lt limit value gt lt coefficient gt term aaaaaaaaaaaaaaa aaaaaaaaaa n nnn nnn n Refer to comma
68. platinum RTDs are included in instrument firmware The Model CYD211 also provides non volatile memory for one 200 point temperature response curve which can be entered via the serial interface Measurements are available in temperature units K C F or sensor units V or Q With an RS 232C serial interface and other interface features the Model CYD211 is valuable as a stand alone monitor and is easily integrated into other systems Setup and every instrument function can be performed via serial interface or the front panel of the Model CYD211 High and low alarms can be used in latching mode for error limit detection and in non latching mode in conjunction with relays to perform simple on off control functions The analog output can be configured for either 0 to 10 V or 4 to 20 mA output Table 1 1 Temperature Range of Typical Omega Sensors Diodes Model Useful Range Silicon Diodes DT 670 14 500K GaAlAs Diode TG 120 14 475K Positive Temperature Coefficient PTC RTDs 100 Q Platinum RTD PT 100 250 Q full scale 30 675K 100 Q Platinum RTD PT 100 500 Q full scale 30 800 K Rhodium Iron RTD RF 800 4 14 400K Negative Temperature Coefficient NTC t RTDs Germanium RTD GR 200A 1000 2 100K Germanium RTD GR 200A 250 1 2 40K Carbon Glass RTD CGR 1 500 3 325 K Cernox RTD CX 1050 AA or SD 3 5 325 K Cernox RTD CX 1030 AA or SD 2 325 High Temperature Cernox RTD CX 103
69. r Y key to select inPUE then press the Enter key twice The display will show the curve currently assigned to the input If no curve is attached nanE will be displayed Use the or V keys to cycle through the temperature response curves When the desired type appears press the Enter key Proceed to Paragraph 3 5 3 to select the display units or press the Select key to return to the normal display Table 3 2 Standard Curves Curve Display Sensor Omega Temperature No Name Type Sensor Sire Name Range 0 nant None None None None 1 Silicon Diode DT 470 Curve 10 1 4 475 K 2 9 10 Silicon Diode DT 670 DT 670 1 4 500 K 3 Silicon Diode N A CTI Curve C 10 320K inn 100 2 f 6 Pt 00 Platinum RTD PT 100 DIN 43760 30 800 K GB 1000 Q 2 7 Pt 000 Platinum N A DIN 43760 30 800K 21 uSEr User defined User defined User defined Operation 3 5 Omega Model CYD211 User s Manual 3 5 3 Display Units Selection The Model CYD211 has a 6 character LED display During normal operation it can display the senor reading in temperature Kelvin Celsius or Fahrenheit or sensor units V or The LEDs to the right of the keys indicate what units are being displayed To select display units continue from input curve selection Paragraph 3 5 2 or press the Select key use the A or Y key to select inPUt then press the Enter key three times The display shows Hn 5
70. r supply This power supply can accept input voltages from 100 to 240 VAC 10 50 to 60 Hertz It has an IEC 320 C14 line cord receptacle for input power and a 5 pin DIN connector for the output It can output 5 V at 1 A 15 V at 400 mA and 15V at 400 mA One power supply can provide power for up to three Model CYD211 s with a user supplied adapter cable The power supply is CE Certified and meets or exceeds the following safety standards UL 1950 CSA C22 2 and IEC 60950 2 5 SENSOR INPUT This paragraph details how to connect diode and resistor sensors to the Model CYD211 input Refer to Paragraph 3 5 to configure the input Sensor installation instructions are provided in the Omega Temperature Measurement and Control Catalog 2 5 1 Input Output Connector Sensors are connected to the Model CYD211 through the Input Output connector on the rear panel of the instrument The Input Output connector is also used for the analog output and relay connections Refer to Figure 2 3 for pin descriptions Installation 2 3 Omega Model CYD211 User s Manual Input Output P 211 2 3 bmp Pin Description Pin Description 1 No Connection 2 Shield 14 Shield 3 I 15 E 4 V 16 V 5 Shield 17 Shield 6 Analog Output Signal 18 Analog Output Ground 7 No Connection 19 No Connection 8 Low Alarm COM 20 Low Alarm N O 9 Low Alarm N C 2 No Connection 10 No Connec
71. rameter value Press and hold to display code revision date Enter Completes setting function storing any changes to the parameter value Press and hold to lock or unlock the keypad 3 4 General Keypad Operation The CYD211 has two keypad operations setting selection and data entry Setting Selection Allows the user to select from a finite list of parameter values During setting selection the and Y keys are used to select a parameter value Enter is used to accept the change and advance to the next parameter Select will cancel the change to that parameter and return to the normal display Data Entry Allows the user to enter numeric parameter values using the and Y keys Press the key to increase the value of the setting or press the W key to decrease its value Holding either key down for a few seconds will cause the number to change at a faster rate Once the correct parameter value is entered press Enter to accept the change and advance to next parameter Pressing Select will cancel the change to that parameter and return to the normal display Related setting selection and data entry sequences are often chained together under a single setting sequence To skip over a parameter without changing its value press Enter before pressing an arrow key To return to the normal display in the middle of a setting sequence press Select before pressing an arrow key Changes entered before Select is pressed are kept Operation 3 3 Om
72. re in Paragraph 5 4 2 Locate the IC on the main circuit board See Figure 5 1 Note orientation of existing IC CAUTION The IC is an Electrostatic Discharge Sensitive ESDS device Wear shock proof wrist straps resistor limited to 5 mA to prevent injury to service personnel and to avoid inducing an Electrostatic Discharge ESD into the device 3 Use IC puller to remove existing IC from the socket 4 Noting orientation of new IC use an IC insertion tool to place new device into socket CAUTION lt A Sensitive Device Typical IC Match notch on IC to notch in socket IC_Notch bmp 5 Follow the opening the enclosure INSTALLATION procedure in Paragraph 5 4 Service 5 3 Omega Model CYD211 User s Manual cs iol t4 211 PCB bmy Figure 5 1 Model CYD211 Main PCB Layout Service 5 4 Omega Model CYD211 User s Manual 5 4 CONNECTOR DEFINITIONS The POWER INPUT OUTPUT and RS 232 DTE connectors are defined in Figures 5 2 thru 5 4 Pin Description 1 Ground 2 Ground 3 T5V 4 15V 5 15V Figure 5 2 Power Connector Input Output P 211 2 3 bmp Pin Description Pin Description 1 No Connection 2 Shield 14 Shield 3 I 15 E 4 V 16 V 5 Shield 17 Shield 6 Analog Output Signal 18 Analog Output Ground 7 No Connection 19 No Connection 8 Low Alarm COM
73. rument will change the input type to silicon diode then return a string with the present input type setting RESPONSE O term 4 10 Remote Operation Omega Model CYD211 User s Manual Table 4 4 Quick Basic Serial Interface Program CLS Clear screen PRINT SERIAL COMMUNICATION PROGRAM PRINT TIMEOUT 2000 Read timeout may need more BAUDS 9600 TERMS CHR 13 CHR 10 Terminators are lt CR gt lt LF gt OPEN COMI BAUDS 0 7 1 RS FOR RANDOM AS 1 LEN 256 LOOP1 LINE INPUT ENTER COMMAND or EXIT CMD Get command from keyboard CMDS UCASES CMD Change input to upper case IF CMD EXIT THEN CLOSE 1 END Get out on Exit CMD CMD TERM PRINT 1 CMD Send command to instrument IF INSTR CMDS 0 THEN Test for query RSS If query read response N 0 Clr return string and count WHILE N lt TIMEOUT AND INSTR RS TERM 0 Wait for response IN INPUT LOC 1 1 one character at a time IF IN THEN N N 1 ELSE N 0 Add 1 to timeout if no chr RS RS IN next chr to string WEND Get chrs until terminators IF RS lt gt THEN See if return string is empty RSS MIDS RSS 1 INSTR RS TERMS 1 Strip off terminators PRINT RESPONSE RS Print response to query ELSE PRINT NO RESPONSE No response to query END IF END IF Get next command GOTO LOOPI Remote Operation 4 11 Omega Model CYD211 User s Manual
74. ry strings through user programs the instrument issues responses Two or more command or query strings can be chained together in one communication but they must be separated by a semi colon The total communication string must not exceed 64 characters in length Remote Operation 4 3 Omega Model CYD211 User s Manual Message Strings Continued A command string is issued by the computer and instructs the instrument to perform a function or change a parameter setting The format is command mnemonic gt lt space gt lt parameter data gt lt terminators gt Command mnemonics are listed in Paragraph 4 2 Parameters necessary for each one are described in Paragraph 4 2 1 Terminators must be sent with every message string A query string is issued by the computer and instructs the instrument to send a response The query format is query mnemonic gt lt gt lt space gt parameter data gt lt terminators gt Query mnemonics are often the same as commands with the addition of a question mark Parameter data is often unnecessary when sending queries Query mnemonics are listed in Paragraph 4 2 Parameter data if necessary 1s described in Paragraph 4 2 1 Terminators must be sent with every message string The computer should expect a response very soon after a query is sent A response string is the instruments response or answer to a query string The response can be a reading value status report or the present value ofa parameter Re
75. s V Volts V Input Range 0 2 0 7 V Sensor Excitation Constant Current 10 0 01 10 0 01 Display Resolution Sensor Units 100 uV 100 DT 670 SD TG 120SD Example LCT eer with Cal with Cal Temperature Range 14 475 K 1 4 475 K Standard Sensor Curve DT 670 Requires Calibration Typical Sensor Sensitivity 31 6 mVat 42K 1 73 mV at 77 K 2 3 mV at 300 K 2 12 mV at 500 K 180 mV K at 10K 1 25 mV K at 77 K 2 75 mV K at 300 K 2 75 mV K at 475 K Measurement Resolution Sensor Units Temperature Equivalence 20 uV 0 6 mK at 4 2 K 11 6 mKat 77 K 8 7 mK at 300K 9 4 mK at 500 K 20 uV 1 mK at 10K 16 mK at 77 K 10 mK at 300 K 10 mK at 475 K Electronic Accuracy Sensor Units Temperature Equivalence 160 0 01 RDG 10 mK at 4 2 152 mK at TI K 94 mK at 300 K 80 mK at 500 K 160 pV 0 02 RDG 6 mK at 10K 300 mK at 77 K 150 mK at 300 K 110 mK at 475 Temperature Coefficient 10 pV 5 PPM 20 5 PPM of reading of reading Temperature Accuracy 31 mK at 4 2 21 mK at 10 including electronic accuracy CalCurve and calibrated sensor 267 mK at 77 K 154 mK at 300 K 140 mK at 500 K 390 mK at 77 K 140 mK at 300 K 210 mK at 475 K Magnetic Field Use Recommended for T gt 60K amp B lt 3T Recommended for T gt 42K amp B lt 5T 1
76. setting resolution is six digits in temperature Most temperature values are entered with 0 001 resolution Temperature values of 1000 K and greater can be entered to 0 01 resolution Temperature values below 10 K can be entered with 0 0001 resolution Temperature range for curve entry is 1500 K Setting resolution is also 6 digits in sensor units The curve format parameter defines the range and resolution in sensor units as shown in Table 3 7 The sensor type determines the practical setting resolution Table 3 7 lists recommended sensor units resolutions For most sensors additional resolution is ignored The breakpoints should be entered with the sensor units value increasing as point number increases There should not be any breakpoint locations left blank in the middle of a curve The search routine in the Model CYD211 interprets a blank breakpoint as the end of the curve Table 3 7 Recommended Curve Parameters Type Shore Modei Unit Format Coefficient sensor Resolution Silicon Diode DT 470 V VIK 475 Negative 0 00001 V GaAlAs Diode TG 120 V VIK 325 Negative 0 00001 V Platinum 100 PT 100 Q QK 800 Positive 0 001 Q Platinum 1000 PT 100 Q QK 800 Positive 0 01 Q Rhodium lron RF 100 Q QK 325 Positive 0 001 Q Carbon Glass CGR 1 1000 Q logQiK 325 Negative 0 00001 090 Cernox CX 1030 Q logo K 325 Negative 0 00001 090 Germanium GR
77. sponse data formats are listed along with the associated queries in Paragraph 4 2 1 The response is sent as soon as possible after the instrument receives the query Typically it takes 10 ms for the instrument to begin the response Some responses take longer 4 1 5 Message Flow Control It is important to remember that the user program is in charge of the serial communication at all times The instrument can not initiate communication determine which device should be transmitting at a given time or guarantee timing between messages This is the responsibility of the user program When issuing commands only the user program should Properly format and transmit the command including terminators as one string Guarantee that no other communication is started for 50 ms after the last character 1s transmitted Not initiate communication more than 20 times per second When issuing queries or queries and commands together the user program should Properly format and transmit the query including terminators as one string Prepare to receive a response immediately Receive the entire response from the instrument including the terminators Guarantee that no other communication is started during the response or for 50 ms after it completes Not initiate communication more than 20 times per second 4 4 Remote Operation Omega Model CYD211 User s Manual Message Flow Control Continued NOTE The serial interface will not
78. stewater Treatment pH Conductivity amp Dissolved Oxygen Instruments M3943 0903
79. ter key and the display will return to normal operation To unlock the keypad press and hold the Enter key for 10 seconds The display will show Uni GC indicating the keypad is now unlocked Release the Enter key and the display will return to normal operation 3 11 RESETTING THE MODEL CYD211 TO DEFAULT VALUES It is sometimes necessary to reset instrument parameters that are stored in nonvolatile memory called EEPROM The default values of the Model CYD211 are shown below in Table 3 6 Resetting to default values does not affect the user curve or the calibration data To reset the Model CYD211 to default values press and hold both the A or V keys for 10 seconds All of the LED digits will illuminate when the memory has been reset Release the buttons and the display will return to normal operation Table 3 6 Model CYD211 Default Values Parameter Default Parameter Default Input Type Silicon Diode Alarm Latch Off Input Curve DT 470 Analog Mode Voltage Display Units K Analog Range 5 Alarm Function Off Relay 1 Mode Off Alarm High OK Relay 2 Mode Off Alarm Low OK Keypad Lock Unlocked Alarm Deadband OK Display Brightness 8 3 12 CHECKING CODE DATE REVISION To check revision date of the firmware code press and hold the Select key until the display shows the code date It is in the format of MMDDYY where MM is the month DD is the day and YY is the year of the code Release the key and t
80. tion 22 No Connection 11 High Alarm COM 23 High Alarm N O 12 High Alarm N C 24 No Connection 13 No Connection 25 No Connection Figure 2 3 Input Output Connector 2 5 2 Sensor Lead Cable The sensor lead cable used outside the cooling system can be much different from what 1s used inside Between the instrument and vacuum shroud heat leak is not a problem but errors from noise pick up need to be minimized Larger conductor 22 to 28 AWG stranded copper wire is recommended because it has low resistance yet remains flexible when several wires are bundled in a cable The arrangement of wires in a cable is also important For best results twist voltage leads V and together and twist current leads I and I together Cover the twisted pairs of voltage and current leads with a braided or foil shield connected to the shield pin of the instrument This type of cable is available through local electronics suppliers Instrument specifications are given assuming 10 feet of sensor cable Longer cables 100 feet or more can be used but environmental conditions may degrade accuracy and noise specifications 2 4 Installation Omega Model CYD211 User s Manual 2 5 3 Shielding Sensor Leads Shielding the sensor lead cable is important to keep external noise from entering the measurement The sensor lead cable should be shielded whenever possible In many systems it is impractical to shield the sensor leads ins
81. to the sensor With separate leads there is little current in the voltage leads so their resistance does not enter into the measurement Resistance in the current leads will not change the current as long as the voltage compliance of the current source is not reached When two lead sensors are used in four lead measurements the short leads on the sensor have an insignificant resistance 2 6 Installation Omega Model CYD211 User s Manual 2 5 7 Two Lead Sensor Measurement Sometimes a crowded cryogenic system forces users to read sensors in a two lead configuration because there are not enough feedthroughs or room for lead wires If this is the case plus voltage to plus current and minus voltage to minus current leads are attached at the back of the instrument or at the vacuum feedthrough I v i Two Lead Diode The error in resistive measurement is the resistance of lead wire run with current and voltage together If the leads contribute 2 or 3 Q to a 5 reading the error can probably be tolerated When measuring voltage for diode sensors the error in voltage can be calculated as the lead resistance times the current typically 10 UA For example 10 Q lead resistance times 10 uA results in a 0 1 mV error in voltage Given the sensitivity of a silicon diode at 4 2 K the error in temperature would be only 3 mK At 77 K the sensitivity of a silicon diode is lower so the error would be close to 50 mK Again this ma
82. trument The 99 1s included to prevent accidentally setting the unit to defaults Displayed Field Command DISPFLD source term n source Specifies input data to display Valid entries 0 Kelvin 1 Celsius 2 sensor units 3 Fahrenheit DISPFLD 1 term Displays Kelvin reading for the input Displayed Field Query DISPFLD term lt source gt term n Refer to command for description Fahrenheit Reading Query FRDG term lt temp value gt term nnnnnn Also see the RDGST command Input Curve Number Command INCRV lt curve number gt term nn lt curve number gt Specifies which curve the input uses If specified curve parameters do not match the input the curve number defaults to 0 Valid entries 0 none 1 20 standard curves 21 user curve Specifies curve the input uses for temperature conversion INCRV 21 term The input User Curve 21 for temperature conversion INCRV Input Returned Format INTYPE Input Format Example INTYPE Input Returned Format KEYST Input Returned Format Remarks KRDG Input Returned Format Remarks 4 20 Omega Model CYD211 User s Manual Input Curve Number Query INCRV term lt curve number gt term nn Refer to command for description Input Type Parameter Command INTYPE sensor type term n sensor type Specifies input sensor type Valid entries 0 Silicon
83. ua apa A RERO ORDINE Table of Contents i Omega Model CYD211 User s Manual TABLE OF CONTENTS Continued Chapter Paragraph Title Page 3 8 ANALOG OUTPUT SETUP eene ene 3 8 3 9 ANALOG OUTPUT TO TEMPERATURE CONVERSION 3 9 3 10 LOCKING AND UNLOCKING THE KEYPAD 3 11 RESETTING THE 211 TO DEFAULT VALUES 3 12 CHECKING CODE DATE REVISION 3 13 CURVE ENTRY amp STORAGE eee 3 13 1 Curve Header 3 13 2 Curve Breakpoints sss 4 REMOTE OPERATION iua uiua 4 0 GENERAL ehe hee erected gena ent ca a e en Ee e erede ene 4 1 SERIAL INTERFACE OVERVIEW seen 4 1 1 Physical Connection 4 1 2 Hardware Support 4 1 3 Character Format 4 1 4 Message Strings 4 1 5 Message Flow 4 1 6 Serial Interface Basic Programs 4 1 7 Trouble Shooting a a E 4 2 SERIAL INTERFACE COMMAND SUMMARY 4 2 1 Interface Commands sse Bi SERVICE oM 5 0 GENERAL a u i aS tiet evt ioa dee een evade dod ee eU ke 5 1 ERROR MESSAGES HIE 5 2 1 Instrument Hardware Errors 5 2 2 a iiie eene ttn M rene odere Reto aeree bae 5 3 OPENING THE ENCLOSURE
84. y not be a problem for every user 2 5 8 Lowering Measurement Noise Good instrument hardware setup technique is one of the least expensive ways to reduce measurement noise The suggestions fall into two categories 1 Do not let noise from the outside enter into the measurement and 2 Let the instrument hardware features work to their best advantage Use 4 lead measurement whenever possible Do not connect sensor leads to chassis or earth ground Usetwisted shielded cable outside the cooling system Attach the shield pin on the sensor connector to the cable shield Do not attach the cable shield at the other end of the cable not even to ground without taking precautions to prevent ground loops Run different inputs and outputs in their own shielded cable Usetwisted wire inside the cooling system Use a grounded receptacle for the instrument power cord e Consider ground strapping the instrument chassis to other instruments or computers Installation 2 7 Omega Model CYD211 User s Manual 2 6 ANALOG OUTPUT The Analog Output available on the rear panel of the Model CYD211 can be configured as either a voltage or current output that can be used for monitor and control applications Its most basic function is a temperature monitor where it puts out a voltage or current that is proportional to temperature Refer to Paragraph 3 8 to configure the analog output In voltage mode the analog output can vary from 0 10

- OMEGA Engineering

Contents

Download Pdf Manuals

Related Search

Related Contents