Omega Engineering CYD201 User's Manual
Contents
1. rrrririiieiniei 6 1 6 0 Gen ralic ii iaia 6 1 6 1 Accessories achas o a e 6 1 6 2 Wire Sitare ei oeae aaea a i 6 2 6 3 O Ea A E AE A i Lia ok A ona 6 3 APPENDIX A CURVE TABLES 210000rrrrrrereeezezezzzzeninee A 1 A1 0 Generals a d a eis A 1 Table of Contents OMEGA Model CYD201 CYD208 User s Manual LIST OF ILLUSTRATIONS Figure No Title 1 1 Typical Cryogenic Dewar nne Model CYD201 Sensor Connector J1 DetailS Model CYD208 Sensor Connector J1 Details Model 2090 Rack Mounting i Model CYD201 Front Panel c ssssssssssssssssssssssssteeeees Model CYD208 Front Panel c sssssssssssssssssssssssstseeees Serial I O RJ 11 Connector Pin Definitions Serial Interface CONNECTIONS cccseeeesesssssessssteesseeeeeees Model CYD201 Rear Panel Connections Model CYD208 Rear Panel Connections Line Voltage Jumper Configuration Calibration ConnEctions A YOGA ONE Mi Mi doma Model CYD200 J10 RJ 11 Cable Assembly Wiring Details D AAAA AA WW DNN LIST OF TABLES Table No Title 1 1 Model CYD201 CYD208 SpecificationS 2 1 Line Voltage and Fuse Rating Selection 2 2 Model CYD201 CYD208 Temperature Curves Serial Interface Specificati2. 1 5 1 3 2 Handling ESDS Components 1 5 1 4 Safety SUMMA kriise iiien 1 5 1 5 Safety SYyMbOIS L ii 1 6 2 INSTALLATION 22 ccc scecpeccscriedensecesnersecnceneetecceeteqessdecsecapecezecssccesce 2 1 2 0 General sists vigone 2 1 2 1 Inspection and Unpacking ii 2 1 2 2 Repackaging For ShIPMENt i 2 1 2 3 Power and Ground Requirements 2 2 2 4 Sensor Installation Recommendations 2 2 2 4 1 Two Lead Vs Four Lead Measurements 2 3 2 4 2 Connecting Leads to the Sensor 2 4 2 4 3 Sensor MOUNtNG ccesceeeseeeeeeeteneeeeeeeteseeeeeeeteaes 2 4 2 4 4 Measurement Errors Due to AC Noise 2 5 2 5 Sensor Input Connections i 2 6 2 6 Sensor Curve DefinitiON i 2 7 2 7 Rack MOUNTtINQ ii 2 7 2 8 Initial Power Up Sequence nn 2 9 2 9 PowerUp Errorsz i alias 2 9 3 OPERATION 3 1 3 0 General i ri a a EL ee 3 1 3 1 ITS Key ani i aloe ine 3 1 3 2 Channel Key Model CYD208 Only 3 2 3 3 Scan Mode irendi sel Elf iaia 3 2 3 4 Setting Dwell TiMESs iii 3 2 3 5 Alarm Operation i 3 2 3 5 1 Alarm Setpoint i 3 2 3 5 2 Latched and Unlatched Alarms 3 3 3 5 3 Alarm Fix Function Model CYD208 Only 3 3 3 6 SoftCal CompensationS i 3 3
3. again displays to indicate the unit is ready to accept the calibration point Within 2 seconds press UNITS to enter a new calibration point If UNITS is not pressed within 2 seconds the display returns to the alarm temperature After 15 seconds the alarm setpoint temperature displays 8 To enter more than one point go back to step 5 NOTE One point may be entered between 1 4 K to 9 9 K No point may be entered between 10 K and 40 K Two points may be entered above 40 K 9 Return the SET switch to position 0 3 4 Operation OMEGA Model CYD201 CYD208 User s Manual 3 6 2 Verifying SoftCal Operation Check the status of SoftCal by holding UNITS for 2 3 seconds If SoftCal is not in operation 000 displays If the first digit of the display is 1 SoftCal is set for below 28 K If either the second or third digit is 1 SoftCal is set for above 28 K 3 6 3 Erasing SoftCal Compensations When SoftCal compensations are erased the thermometer returns to normal operation 1 Move the SET switch to position 1 2 Hold UNITS until the front panel displays 0 This key is a toggle If the display moves in the wrong direction release and press again 3 Press CAL ENABLE on rear panel using a pen tip The display changes from 0 to SOF The alarm setpoint displays after erasing SoftCal compensation 4 Move the SET switch to position 0 Operation 3 5 3 6 OMEGA Model CYD201 CYD208 User s Man
4. 3 6 1 SoftCal Calibration Procedure 3 4 3 6 2 Verifying SoftCal Operation 3 5 3 6 3 Erasing SoftCal Compensations 3 5 Table of Contents OMEGA Model CYD201 CYD208 User s Manual TABLE OF CONTENTS Continued Chapter Paragraph Title Page 4 REMOTE OPERATION 4 1 4 0 General Ii eine 4 1 4 1 Serial Interface i ia tienilo aa AET 4 1 4 1 1 Serial Interface Connections 4 1 4 1 2 Serial Interface Operation 4 3 4 1 3 Sample Basic Program i 4 3 4 1 4 Sample QuickBasic 4 0 Program 4 4 4 2 Serial Interface Command SUMMAry 4 4 E dE EEEE T ATTE ii 5 1 5 0 General eee ee ee em lie ole 5 1 5 1 Model CYD201 Rear Panel Connections 5 1 5 2 Model CYD208 Rear Panel Connections 5 2 5 3 Error Code Troubleshooting 5 3 5 4 General Maintenance ccccsseeseseeesessseseseeeeeees 5 3 5 5 Fuse Replacement cccesscceeeseeceeseseeeeesseeeetesees 5 4 5 6 Line Voltage Configuration i 5 4 5 7 RecalibratioN aa ea aii 5 5 5 7 1 Current Source Calibration 5 5 5 7 2 A D Converter Calibration 5 6 5 8 Serial Interface Cable and Adapters 5 6 6 OPTIONS AND ACCESSORIES
5. diameter probe Stainless steel Sensor Probe with 12 foot 3 7 m cable with 4 stripped ends 6 inch 15 cm long by inch 3 2 mm diameter probe Stainless steel Sensor Probe with 6 foot 1 83 m cable with 4 stripped ends 4 inch 10 cm long by inch 3 2 mm diameter probe Stainless steel Sensor Probe with 12 foot 3 7 m cable 2082 4 with 4 pin 201 MC mating connector 6 inch 15 cm long by s inch 3 2 mm diameter probe Options and Accessories 6 1 OMEGA Model CYD201 CYD208 User s Manual ACCESSORIES continued DESCRIPTION OF ACCESSORY Sensor Probe 12 foot 3 7 m cable with CY 7 SD 13 sensor in CY mounting adapter stripped ends Tempera ture limit 325 K 52 C Diode sensor epoxied Stycast into center of 0 564 inch 1 43 cm diameter by 0 20 inch 5 mm thick copper disk 30 AWG copper leads anchored to disk Mass excluding leads 4 3 grams Sensor Probe 12 foot 3 7 m cable with CY 7 SD 13 sensor in CY mounting adapter with 4 pin CYD201 MC mating connector Temperature limit 325 K 52 C Diode sensor epoxied Stycast into center of 0 564 inch 1 43 cm diameter by 0 20 inch 5 mm thick copper disk 30 AWG copper leads anchored to disk Mass excluding leads 4 3 grams Multi Connector Adapter Required with Model CYD208 2084 when using multiple probe cable assemblies and Model 201 MC mating connectors CYD208 Mounting Adapter for Rack Installation For installation i
6. 04123 1 02954 1 01748 1 00528 0 99263 0 98666 0 97988 0 96711 0 95397 0 94086 0 92767 0 91443 0 90124 0 88776 0 87434 0 86087 0 84735 0 83377 0 82032 0 80647 0 79274 0 77896 0 76513 0 75125 BP Temp K PROM Voltage 0 73733 0 72353 0 70936 0 69532 0 68125 0 66713 0 65302 0 63889 0 62475 0 61066 0 59646 0 58262 0 56877 0 55504 0 54136 0 52801 0 51469 0 50155 0 48815 0 47486 0 46148 0 44800 0 43451 0 42064 0 40675 0 39274 0 37875 0 36436 0 35002 0 33559 0 32109 0 30656 0 29222 OMEGA Model CYD201 CYD208 User s Manual Table A 2 Curve 1 DT 500DI 8A Voltage Temp Characteristics BP Temp PROM Voltage 2 46386 2 44821 2 43188 2 41500 2 39781 2 37578 2 33823 2 29906 2 26440 2 23248 2 20480 2 17716 2 14994 2 12245 2 10065 2 07844 2 03712 1 99736 1 95641 1 91202 1 85236 1 79177 1 73193 1 66870 1 59215 1 51169 1 43234 1 34993 1 28434 1 23212 1 18995 1 16027 1 14015 1 12689 Temp K PROM Voltage 1 11741 1 11007 1 09942 1 09178 1 08559 1 07992 1 07502 1 06307 1 05136 1 03951 1 02744 1 01475 1 00193 0 98892 0 98264 0 97557 0 96216 0 94877 0 93535 0 92166 0 90798 0 89426 0 88052 0 86676 0 85298 0 83936 0 82531 0 81142 0 79749 0 78351 0 76950 0 75544 0 74135 BP Temp K PROM Voltage 0 72739 0 71308 0 69891 0 68469 0 67043 0 65615 0 64185 0 62754 0 61333 0 59901 0 58502 0 57099 0 55715 0 54
7. 1 Input 6 18 Shield 30 l Input 6 19 Input 1 31 1 Input 7 20 I Input 1 32 1 Input 7 21 1 Input 2 33 1 Input 8 22 I Input 2 34 I Input 8 23 1 Input 3 35 Shield 24 1 Input 3 36 Shield Figure 2 2 Model CYD208 D Sensor Connector Details 2 6 Installation OMEGA Model CYD201 CYD208 User s Manual 2 6 SENSOR CURVE DEFINITION To display accurate temperature select a response curve that matches the installed sensor There are seven standard curves stored within the Model CYD201 CYD208 numbered 0 through 6 see Appendix A Different curves may be assigned to each channel of the Model CYD208 Find the unit factory curve configuration inside the front cover of this manual Curve 6 CY 7 Curve 10 is the standard curve configuration unless specified differently upon order To determine current curve selection press and hold UNITS and turn on 1 the rear panel SET switch DIP switch 3 Release UNITS key The CYD201 displays the curve number in the display window The Model CYD208 displays the curve number in the display window and the channel number in the channel window To display curves for other channel numbers in the Model CYD208 press CHANNEL to scroll through the eight channels To change the curve press UNITS The instrument scrolls through curves 0 through 6 In the Model CYD208 press CHANNEL to select other channels then press UNITS to scroll through the curves After the new curve sele
8. 3 3 RS 232C J2 SERIAL I O Interface Output 68 on rear of Model 38 CYD201 or Q 5 CYD208 5 2 DE 33 53 310 Q TS Use whichever adapter that Fa matches your computer serial interface connector 2 Model CYD200 B PA Sia RJ 11 to DE 9 Adapter 20 2 0 5 os mo 28 es 33 SE Model CYD200 J10 es RJ 11 Cable Assembly 38 3 O h ea Figure 6 1 Serial Interface Adapters Options and Accessories 6 3 6 4 OMEGA Model CYD201 CYD208 User s Manual This Page Intentionally Left Blank Options and Accessories OMEGA Model CYD201 CYD208 User s Manual A1 0 GENERAL The following curve tables apply to the Model CYD201 CYD208 Curve 0 DT 500DI 8B Table A 1 Curve 1 DT 500DI 8A Table A 2 Curve 2 DT 500DRC D Table A 3 Curve 3 DT 500DRC E1 Table A 4 Curve 4 CTI Curve C Table A 5 Curve 5 DT 500DI 8C Table A 6 and Curve 6 CY 7 Curve 10 Table A 7 Table A 1 Curve 0 DT 500DI 8B Voltage Temp Characteristics Temp BP K Appendix A PROM Voltage 2 41773 2 40475 2 39217 2 37946 2 36668 2 35378 2 32126 2 28869 2 25643 2 22480 2 19395 2 16053 2 13552 2 10809 2 08197 2 05687 2 00852 1 96003 1 90579 1 85614 1 80479 1 74703 1 67479 1 60665 1 53675 1 46370 1 38832 1 31868 1 26476 1 21712 1 17857 1 15106 1 13317 1 12169 APPENDIX A CURVE TABLES BP Temp K PROM Voltage 1 11353 1 10729 1 09810 1 09125 1 08547 1 08038 1 07549 1 06400 1 05273 1
9. AC noise connect twisted leads pairs between the measurement instruments and the diode sensors Use 32 or 36 AWG OMEGA Duo Twist Cryogenic Wire which features phosphor bronze wire twisted at 3 15 twists per centimeter 8 twists per inch See the OMEGA Product Catalog or contact OMEGA for further information Installation 2 5 OMEGA Model CYD201 CYD208 User s Manual 2 5 SENSOR INPUT CONNECTIONS The Model CYD201 has one rear panel 4 pin sensor input connector designated J1 INPUT 1 The connector pins numbered 1 thru 4 are shown below J1 INPUT 1 Terminal Description 4 Current Out 4 6 AN 1 Current Out 6 6 2 Voltage Sense 3 2 3 Voltage Sense CASE Shield Figure 2 1 Model CYD201 Sensor Connector J1 Details The Model CYD208 has a 36 pin Miniature D style connector designated J1 INPUTS for inputs 1 thru 8 A Model CYD208 D connector is included to solder interfacing connections to J1 The pin configuration of the Model CYD208 D is shown below Terminal Description 2 4 6 8 10 12 14 16 18 V Input 1 13 5 7 9 11 13 15 17 V_ Input 1 f 2 3 V Input 2 qo A A A A ie i Se VVUUVUVUVUVVUU 6 V_ Input 3 COTTI i ARE OOOO 9 Input 4 V Input 5 20 22 24 26 28 30 32 34 36 o R 19 21 23 25 27 29 31 33 35 12 V_ Input 6 Terminal Description 13 V Input 7 25 1 Input 4 14 V_ Input 7 26 l1 Input 4 15 V Input 8 27 1 Input 5 16 V_ Input 8 28 I Input 5 17 Shield 29
10. Model CYD208 automatically scans all eight channels with selectable dwell times of 0 skip 5 10 30 and 60 seconds for each channel Connections Four lead sensor connection 2 current 2 voltage Response Curves Standard Curve 10 DT 500DI 8A also 8B and 8C DT 500DRC D DT 500DRC E1 and CTI Curve C SOFTCAL qualified only for CY 7 Series diode sensors COMPUTER INTERFACE Type RS 232C Serial Three Wire Refer to Table 4 1 MECHANICAL Ambient Temperature Range 18 to 28 C 64 to 82 F or 15 to 35 C 59 to 95 F with reduced accuracy Power Requirements 90 125 or 210 250 VAC 50 60 Hz 3 watts Dimensions 41 x 106 x 164 mm 1 61 x 4 18 x 6 45 inches Weight 0 5 kilogram 1 1 Pounds NOTES 1 Product Specifications subject to change without notice 2 System electronic temperature accuracy in a given temperature range is the sum of the specifications given for input and output Sensor calibration errors are not included 1 2 Introduction OMEGA Model CYD201 CYD208 User s Manual 1 2 HANDLING LIQUID HELIUM AND LIQUID NITROGEN Helium and Nitrogen are colorless odorless and tasteless gases They liquefy when properly cooled Liquid helium LHe and liquid nitrogen LN2 may be used in conjunction with the Model CYD201 or CYD208 Although not explosive there are certain safety considerations in the handling of LHe and LNe 1 2 1 Handling Cryogenic Storage Dewars Operate all cryogenic contain
11. Rear Panel Connections Paragraph 5 2 Error Code Troubleshooting Paragraph 5 3 General Maintenance Paragraph 5 4 Fuse Replacement Paragraph 5 5 Line Voltage Selection Paragraph 5 6 Calibration Paragraph 5 7 and Serial Interface Cable and Adapters Paragraph 5 8 5 1 MODEL CYD201 REAR PANEL CONNECTIONS J1 INPUT 1 J3 ALARM 1 COM 2 x rSET o o J2_SERIAL 1 0 LATCH _ DI I ADJ CAL Fuse sAG SB ENABLE 50 60 Hz Ac 90 SaS 210 eee Figure 5 1 Model CYD201 Rear Panel Connections J1 INPUT 1 Accepts circular 4 pin connector temperature sensor 201 MC J2 SERIAL I O RJ 11 jack for serial remote communications to a host computer May require accessories CYD200 J10 RJ 11 phone cord and CYD200 D RJ 11 to DB 25 adapter J3 ALARM Relay responds to alarm setpoints and can trigger another device Contact 1 is normally open contact 2 is normally closed Switch Not used LATCH switch When on position 1 turns alarm on but not off latched as indicated by temperature change When off position 0 turns alarm off or n unlatched SET switch Used in setting alarm setpoints and recalibration CAL ENABLE Calibration Enable pushbutton Used during A D Converter Calibration See Paragraph 5 7 2 ADJ Current Adjust trim potentiometer Used during Current Source Calibration See Paragraph 5 7 1 Service 5 1 OMEGA Model CYD201 CYD208 User
12. s Manual 5 2 MODEL CYD208 REAR PANEL CONNECTIONS J1_INPUTS J3 ALARM J2_SERIAL 1 0 gt oll lle o lit o Ail I ADJ CAL FUSE 3AG SB D 0 2 A 01A ENABLE 50 60 Hz Ac 90 125 v 210 250 V Figure 5 2 Model CYD208 Rear Panel Connections J1 INPUTS Accepts 36 pin D style connector 208 MC and multi sensor adapters Adapter sits on top of thermometer and accepts up to 8 temperature sensors Adapter designed for either circular 4 pin 2084 or stripped wire 2081 sensors J2 SERIAL I O RJ 11 jack for serial remote communications to a host computer May require accessories CYD200 J10 RS 232C phone cord and CYD200 D RJ 11 to DB 25 adapter J3 ALARM Relay responds to alarm setpoints and can trigger another device Contact 1 is normally open contact 2 is normally closed FIX switch Switches alarm functions between monitoring all channels position 0 or monitoring channel 1 only position 1 LATCH switch When on position 1 turns alarm on but not off latched as indicated by temperature change When off position 0 turns alarm off or n unlatched SET switch Used in setting alarm setpoints and recalibration CAL ENABLE Calibration Enable pushbutton Used during A D Converter Calibration See Paragraph 5 7 2 I ADJ Current Adjust trim potentiometer Used during Current Source Calibration See Paragraph 5 7 1 5 2 Service OMEGA Model CYD201 CYD208
13. you are having with the product Every precaution for accuracy has been taken in the preparation of this manual however OMEGA ENGINEERING INC neither assumes responsibility for any omissions or errors that may appear nor assumes liability for any damages that result from the use of the products in accordance with the information contained in the manual OMEGA policy is to make running changes not model changes whenever an improvement is possible That way our Customers get the latest in technology and engineering OMEGA is a registered trademark of OMEGA ENGINEERING INC 1998 and 1999 OMEGA ENGINEERING INC All rights reserved including illustrations Nothing in this manual may be reproduced in any manner either wholly or in part for any purpose whatsoever without written permission from OMEGA ENGINEERING INC Printed in U S A OMEGA Model CYD201 CYD208 User s Manual TABLE OF CONTENTS Chapter Paragraph Title Page T INTRODUCTION LoiLccintiirpeieriniiaiinzniionionii cinici 1 1 1 0 GON alls asics io haec 1 1 1 1 Model CYD201 CYD208 System Description 1 1 1 2 Handling Liquid Helium and Liquid Nitrogen 1 3 1 2 1 Handling Cryogenic Storage Dewars 1 3 1 2 2 LHe and LN Safety Precautions 1 3 1 2 3 Recommended First Aid ii 1 4 1 3 Electrostatic Discharge ii 1 4 1 3 1 Identifying ESDS Components
14. 2378 or 203 359 1660 Upon receipt inspect container and equipment for damage Note particularly any evidence of freight damage Immediately report any damage to the shipping agent NOTE The carrier will not honor any claims unless all shipping material is saved for their examination After examining and removing contents save packing material and carton in the event reshipment is necessary 2 2 REPACKAGING FOR SHIPMENT To return the Model CYD201 CYD208 sensor or accessories for repair or replacement obtain a Authorized Return AR number from Technical Service in the United States or from the authorized sales service representative from which the product was purchased Instruments may not be accepted without a RGA number When returning an instrument for service OMEGA must have the following information before attempting any repair Instrument model and serial number User name company address and phone number Malfunction symptoms Description of system Authorized Return AR number Oe Pas 09 RO Pe Repack the system in its original container if available Write AR number on the outside of the container or on the packing slip If not available consult OMEGA for shipping and packing instructions Installation 2 1 OMEGA Model CYD201 CYD208 User s Manual 2 3 POWER AND GROUND REQUIREMENTS The Model CYD201 CYD208 requires a power source of 90 to 125 or 210 to 250 VAC 50 or 60 Hz single phase 3 Watts Three
15. 317 0 91243 0 90161 0 89082 0 87976 0 86873 0 85764 0 84650 0 83541 0 82404 0 81274 0 80138 0 78999 0 77855 0 76717 0 75554 0 74398 0 73238 0 72075 0 70908 0 69737 0 68580 0 67387 0 66208 0 65026 0 63841 0 62654 0 61465 0 60273 0 59080 0 57886 0 56707 0 55492 0 54294 0 53093 0 51892 OMEGA Model CYD201 CYD208 User s Manual Table A 7 Curve 6 CY 7 Voltage Temp Characteristics continued Temp PROM Temp PROM PROM BP K Voltage BP K Voltage Voltage 305 0 0 50689 365 0 0 36110 425 0 0 21212 310 0 0 49484 370 0 0 34881 430 0 0 19961 315 0 0 48278 375 0 0 33650 3 435 0 0 18696 320 0 0 47069 380 0 0 32416 440 0 0 17464 325 0 0 45858 385 0 0 31180 445 0 0 16221 330 0 0 44647 4 390 0 0 29958 450 0 0 14985 335 0 0 43435 395 0 0 28700 455 0 0 13759 5 340 0 0 42238 400 0 0 27456 2 460 0 0 12536 345 0 0 41003 405 0 0 26211 465 0 0 11356 350 0 0 39783 410 0 0 24963 470 0 0 10191 355 0 0 38561 415 0 0 23714 1 475 0 0 09032 360 0 0 37337 420 0 0 22463 zo NOTES cg zo NOTES c OMEGA YOUR SOURCE FOR PROCESS MEASUREMENT AND CONTROL TEMPERATURE Thermocouple RTD amp Thermistor Probes amp Assemblies Connector Systems and Panels Wire Thermocouple RTD and Thermistor Calibrators and Ice Point References Recorders Controllers and Process Monitors Data Acquisition Modules and Data Loggers Computer Sensor Interface PRESSURE STRAIN O Transducers O Strain Gauges I Load Cell
16. 327 0 52983 0 51639 0 50302 0 48965 0 47625 0 46292 0 44925 0 43559 0 42178 0 40797 0 39375 0 37951 0 36515 0 35078 0 33599 0 32121 0 30643 0 29159 0 27665 OMEGA Model CYD201 CYD208 User s Manual Table A 3 Curve 2 DT 500DRC D Voltage Temp Characteristics Temp PROM Temp PROM Temp PROM BP K Voltage BP K Voltage BP K Voltage 1 3505 0 70757 1 3006 0 69344 1 2507 0 67931 1 2114 0 65518 1 1720 0 65105 1 1486 0 63693 1 1308 0 62280 1 1190 0 60867 1 1116 0 59455 1 1058 0 58080 1 0970 0 56707 1 0902 0 55334 1 0850 0 53960 1 0798 0 52649 1 0746 0 51337 1 0633 0 50026 1 0520 0 48714 1 0407 0 47403 1 0287 0 46057 1 0166 0 44711 1 0046 0 43365 0 99172 0 42019 0 97890 0 40613 0 96609 0 39208 0 95327 0 37802 0 93987 0 36397 0 92647 0 34940 0 91307 0 33482 0 89966 0 32025 0 88626 0 30568 0 87286 0 29111 0 85946 0 27654 0 84606 0 26197 0 83228 0 24739 0 81850 0 23325 0 80472 0 21911 0 79094 0 20497 0 77716 0 19083 0 76338 0 17774 0 74961 0 16464 0 73582 0 15155 0 72170 ee ee ee eer OO0ONDUIASA N N Appendix A A 3 OMEGA Model CYD201 CYD208 User s Manual Table A 4 Curve 3 DT 500DRC E1 Voltage Temp Characteristics Temp PROM Temp PROM Temp PROM BP K Voltage BP K Voltage K Voltage ee ee ee ee eer OO0ONDUIAS N N OMEGA Model CYD201 CYD208 User s Manual Table A 5 Curve 4 CTI Diode Voltage Temp Characteristics Temp PROM Temp PROM Temp PRO
17. 4 60 seconds Setting a dwell time of 0 skips the specified channel in the sequence Y23 term sets the dwell time for channel 2 to 30 seconds Remote Operation 4 5 YC Input Returned Remarks YH Input Returned Remarks YS Input Returned Remarks WA Input Returned Remarks 4 6 OMEGA Model CYD201 CYD208 User s Manual Channel Scanner Channel Model CYD208 Only YCx Nothing Asynchronously selects a scanner channel for readout independent of scan feature where x channel 1 8 End Scanning Model CYD208 Only YH Nothing Halts input scan at current input channel Place scanner on hold when sending any other commands to scanner or unpredictable results may occur Begin Scanning Model CYD208 Only Ys Nothing Starts input scan from current input channel The instrument skips every channel with a dwell time of zero Switch ID and Alarm Data WA For a Model CYD201 returns switch ID high or low alarm alarm sign alarm setpoint CR LF For a Model CYD208 returns switch ID high or low alarm alarm sign alarm setpoint active channel number CR LF Provides the switch ID and alarm data The switch ID parameter is 0 through 3 for the Model CYD201 It is the sum of 1 if the alarm set enable is set plus 2 if relay latching is desired The switch ID parameter is 0 through 7 for the Model CYD208 It is the sum of 1 if the alarm set enable is set plus 2
18. D208 response 70 PRINT B PRINT instrument response 90 GOTO 11 Jump back to the beginning 100 CLOSE 1 Close COM port 101 END End program Remote Operation 4 3 OMEGA Model CYD201 CYD208 User s Manual 4 1 4 Sample Quick Basic 4 0 Program STARTUP OPEN COMI 300 0 7 1 RS FOR RANDOM AS 1 open the serial port PRINT TYPE QUIT TO EXIT print QUIT message RESTART PRINT print blank line INPUT ENTER COMMAND A get command to send IF A QUIT THEN GOTO FINISH check for quit request A A CHR 13 CHR 10 adding CR and LF PRINT 1 A sending command string R INSTR A W scan for W query IF R 0 THEN GOTO REJUMP if not query skip print FOR Z 1 TO 500 NEXT Z short delay LINE INPUT 1 B read back CYD201 CYD208 response PRINT B print instrument response REJUMP GOTO RESTART jump back to beginning FINISH CLOSE 1 close serial port END end exit program 4 2 SERIAL INTERFACE COMMAND SUMMARY Command Function Command Function FO Sensor Units for Setpoint Y Scan Dwell Time H High Alarm Setpoint YC Scanner Channel Selection L Low Alarm Setpoint YH Scan Disable R Reset Alarm YS Scan Enable WA Switch ID amp Alarm Data Query WY Scan and Dwell Query WS Sensor Reading amp Alarm Status Query Model CYD208 Only Below is an explanation of the command list structure Brief Description of Function Command Nam
19. LE FOR CONSEQUENTIAL INCIDENTAL OR SPECIAL DAMAGES THE BUYER S SOLE REMEDY FOR ANY BREACH OF THIS AGREEMENT BY OMEGA ENGINEERING INC OR ANY BREACH OF ANY WARRANTY BY OMEGA ENGINEERING INC SHALL NOT EXCEED THE PURCHASE PRICE PAID BY THE PURCHASE TO OMEGA ENGINEERING INC FOR THE UNIT OR UNITS OR EQUIPMENT DIRECTLY AFFECTED BY SUCH BREACH RETURN REQUESTS INQUIRIES Direct all warranty and repair requests inquiries to the OMEGA Customer Service Department Call toll free in the USA and Canada 1 800 622 2378 FAX 203 359 7811 International 203 359 1660 FAX 203 359 7806 BEFORE RETURNING ANY PRODUCT S TO OMEGA OBTAIN AN AUTHORIZED RETURN AR NUMBER FROM OUR 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 FOR WARRANTY RETURNS Please have the following information available BEFORE contacting OMEGA 1 P O Number under which the product was PURCHASED 2 Model and serial number of the product under warranty 3 Repair instruction and or specific problems you are having with the product FOR NON WARRANTY REPAIRS OR CALIB4RATIONS Consult OMEGA for current repair calibration charges Have the following information BEFORE contacting OMEGA 1 Your P O Number to cover COST of the repair calibration 2 Model and serial number of the product under warranty 3 Repair instruction and or specific problems
20. M K Voltage BP K Voltage BP K Voltage Appendix A OMEGA Model CYD201 CYD208 User s Manual Table A 6 Curve 5 DT 500DI 8C Voltage Temp Characteristics Temp PROM Temp PROM Temp PROM BP Voltage K Voltage BP K Voltage OMEGA Model CYD201 CYD208 User s Manual Table A 7 Curve 6 CY 7 Voltage Temp Characteristics PROM Voltage Temp BP K NNi Li da er O0V0ONDOUA Appendix A PROM Voltage 1 69808 1 69674 1 69521 1 69355 1 69177 1 68987 1 68912 1 68574 1 68352 1 68121 1 67880 1 67632 1 67376 1 67114 1 66845 1 66571 1 66292 1 66009 1 65721 1 65430 1 65134 1 64833 1 64529 1 64219 1 64112 1 63587 1 63263 1 62602 1 61920 1 61220 1 60506 1 59782 1 59047 1 58303 1 57551 1 56792 1 56027 1 54097 1 52166 1 50272 1 48443 1 46700 1 44850 1 43488 1 42013 1 40615 1 39287 1 38021 BP Temp K 1 36687 1 35647 1 34530 1 33453 1 32412 1 31403 1 30422 1 29340 1 28527 1 27607 1 26702 1 25810 1 24928 1 24053 1 23184 1 22314 1 21555 19645 17705 15558 13598 12463 11896 11517 11202 10945 10702 10465 10263 10060 1 09864 1 09675 1 09477 1 09309 1 09131 1 08955 1 08781 1 08436 1 08105 1 07748 1 07402 1 07053 1 06700 1 06346 1 05988 1 05629 1 05277 1 04353 BP Temp K PROM Voltage 1 03425 1 02482 1 02044 1 01525 1 00552 0 99565 0 98574 0 97550 0 96524 0 95487 0 94455 0 93383 0 92
21. Model CYD200 D RJ 11 to DB 25 Adapter Wiring Details 5 6 Service OMEGA Model CYD201 CYD208 User s Manual DE 9 CONNECTOR NOT USED RJ 11 RECEPTACLE Figure 5 7 Model CYD200 B RJ 11 to DE 9 Adapter Wiring Details Service 5 7 5 8 OMEGA Model CYD201 CYD208 User s Manual This Page Intentionally Left Blank Service OMEGA Model CYD201 CYD208 User s Manual CHAPTER 6 OPTIONS AND ACCESSORIES 6 0 GENERAL This chapter lists options accessories sensors wires and special equipment available for the Model CYD201 CYD208 6 1 ACCESSORIES DESCRIPTION OF ACCESSORY 201 MC 4 pin Mating Connector for Model CYD201 and Model 2084 208 MC 36 pin D Style Connector for Model CYD208 CYD200 J10 RJ 11 to RJ 11 Phone Cord 10 feet 3 meters See Figure 6 1 CYD200 D RJ 11 to DB 25 Adapter Connects RJ 11 to RS 232C Serial Port on rear of computer See Figure 6 1 CYD200 B RJ 11 to DE 9 Adapter Connects RJ 11 to RS 232C Serial Port on rear of computer See Figure 6 1 2010 Model CYD201 calibration connector 2080 Model CYD208 calibration connector Screw Terminal Adapter Connects Model CYD208 to multiple sensor probe assemblies with stripped ends and non permanent wiring Provision for attachment to top of thermometer Fitted with D type mating connector Stainless steel Sensor Probe with 6 foot 1 83 m cable with 4 pin 201 MC mating connector 4 inch 10 cm long by s inch 3 2 mm
22. OPERATOR S MANUAL Model CYD201 and CYD208 Digital Thermometer YEOMEGA ENGINEERING INC An OMEGA Technologies Company M789 038A 15 June 1999 OMEGA Model CYD201 CYD208 User s Manual WARRANTY OMEGA warrants this unit to be free of defects in materials and workmanship and to give satisfactory service for a period of 13 months from date of purchase OMEGA Warranty adds an additional one 1 month grace period to the normal one 1 year product warranty to cover handling and shipping time This ensures that our Customers receive maximum coverage on each product If the unit should malfunction it must be returned to the factory for evaluation Our 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 However this WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of being damaged as a result of excessive current heat moisture vibration or misuse Components which wear or which are damaged by misuse are not warranted These include contact points fuses and triacs THERE ARE NOT WARRANTIES EXCEPT AS STATED HEREIN THERE ARE NO OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND OF FITNESS FOR A PARTICULAR PURPOSE IN NO EVENT SHALL OMEGA ENGINEERING INC BE LIAB
23. RATION This section covers Alarm Setpoint Paragraph 3 5 1 Latched and Unlatched Alarms Paragraph 3 5 2 and the Alarm Fix Function Paragraph 3 5 3 3 5 1 Alarm Setpoint The alarm setpoint is a temperature which activates the alarm relay Set it to warn of temperatures rising above high alarm or falling below low alarm a certain point NOTE Alarm setpoints work for temperatures not voltage If in voltage mode while setting an alarm setpoint the thermometer defaults to kelvin for the alarm setpoint To display the alarm setpoint move the SET switch on the rear panel to position 1 To change the setpoint 1 Make sure the SET switch is in position 1 3 2 Operation OMEGA Model CYD201 CYD208 User s Manual 2 Hold UNITS until the desired temperature displays UNITS is a toggle if it is released and pressed again the temperature direction reverses If the temperature display increases the alarm is a high setpoint If the temperature display decreases the alarm is a low setpoint 3 Release UNITS when the desired setpoint displays For a Model CYD208 press CHANNEL to display the desired channel in the channel window and repeat the steps above to set the alarm for each channel 4 Move the SET switch back to position 0 to enable the alarm When it triggers an alarm status light appears in the upper left of the temperature display The alarm can be connected to another device which triggers when the alarm activat
24. User s Manual 5 3 ERROR CODE TROUBLESHOOTING On power up the CYD201 CYD208 checks internal memory If a problem exists an error message displays on the front panel of the instrument Er01 indicates a hardware problem in the instrument memory This error is not user correctable Er02 indicates a soft error in the instrument memory To correct this error use the following procedure 1 Power up the unit and allow it to display Er02 2 Close DIP Switch 1 top of the switch pressed in Leave the switch closed for at least 5 seconds then open DIP switch 1 bottom of the switch pressed in 3 Verify the Model CYD201 CYD208 display goes through a normal power up sequence and then displays 499 9 K 4 The input s of the Model CYD201 CYD208 must now be recalibrated per in procedure in Paragraph 5 7 before the unit can be used OL indicates a voltage input overload This can be caused by an open sensor or diode sensor wired backwards Before calling the factory about a persistent problem try the procedure below WARNING This procedure erases calibration constants stored in Non Volatile RAM If this procedure is used recalibrate the instrument 1 With power turned Off press and hold CAL ENABLE on the back panel While holding CAL ENABLE turn instrument power On 2 If the Model CYD201 CYD208 displays Er02 follow the Calibration procedure in Paragraph 5 7 If Er01 still displays or if the Model CYD201 CYD208 does not respo
25. afety 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 Ground The Instrument To minimize shock hazard connect instrument chassis and cabinet to an electrical ground The instrument comes with a 3 conductor AC power cable Plug it into an approved three contact electrical outlet or use a three contact adapter with the green ground wire firmly secured to an electrical ground safety ground at the power outlet The power cable jack and mating plug meet Underwriters Laboratories UL and International Electrotechnical Commission IEC safety standards Introduction 1 5 OMEGA Model CYD201 CYD208 User s Manual 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 Do Not Substitute Parts Or Mo
26. ction turn the SET switch on the rear panel off 0 The unit returns to normal operation Table 2 2 Model CYD201 CYD208 Temperature Curves Curve No Range K Description DT 500DI 8B DT 500DI 8A DT 500DRC D DT 500TDC E1 CTI Curve C DT 500DI 8C CY 7 Curve 10 2 7 RACK MOUNTING The Models CYD201 and CYD208 can install in a standard size 1 4 panel EIA rack space If you ordered a CYD208 DIN rack mounting adapter follow the installation instructions below See Figure 2 3 1 Remove front feet on bottom of unit and attach lower rack piece by threading two of the four screws provided into the front feet holes 2 Locate the two mounting hole access covers on the top of the unit Attach the other rack with the remaining screws Installation 2 7 OMEGA Model CYD201 CYD208 User s Manual 0 265 6 73 0 215 5 46 ide 72 B 2 50 63 5 Hole Sizes A 0 189 0 480 Diameter 4 Places B 0 169 0 429 Diameter 2 Places ij 1 50 38 10 Model CYD201 or CYD208 Front Panel mi 1 25 31 75 4 18 106 17 gt Figure 2 3 Model CYD208 DIN Rack Mounting 2 8 Installation OMEGA Model CYD201 CYD208 User s Manual 2 8 INITIAL POWER UP SEQUENCE The test sequence below occurs at power up 1 All display segments light 2 The unit displays 201 or 208 3 The instrument begins normal operation Units currently selected flash Model CYD208s also indicate the cur
27. dify Instrument Do not install substitute parts or perform any unauthorized modification to the instrument Return the instrument to an authorized OMEGA Cryotronics Inc representative for service and repair to ensure that safety features are maintained 1 5 SAFETY 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 or temperatures Background color Yellow Symbol and outline Black Caution or Warning See instrument documentation Background color Yellow Symbol and outline Black PP BO FOr ede 1 6 Introduction OMEGA Model CYD201 CYD208 User s Manual CHAPTER 2 INSTALLATION 2 0 GENERAL This chapter covers Inspection and Unpacking Paragraph 2 1 Repackaging for Shipment Paragraph 2 2 Sensor Installation Recommendations Paragraph 2 3 Power and Ground Requirements Paragraph 2 4 Sensor Curve Definitions Paragraph 2 5 and Rack Mounting Paragraph 2 6 2 1 INSPECTION AND UNPACKING Remove packing list and verify receipt of all equipment For question about the shipment please call OMEGA Customer Service Department at 1 800 622
28. e Alarm Reset Syntax of user input Input R Information returned in Returned Nothing response to query Remarks Used to reset Explanation of the alarm returned data 4 4 Remote Operation FO Input Returned Remarks H Input Returned Remarks Example L Input Returned Remarks Example R Input Returned Remarks Y Input Returned Remarks Example OMEGA Model CYD201 CYD208 User s Manual Sets Sensor Units for Temperature Display FOX Nothing Sets sensor units for the temperature display where x C Celsius F Fahrenheit K kelvin or V volts Select High Alarm Setpoint Value Hxxx x Nothing Sets high alarm setpoint where xxx x temperature setpoint in units specified by FO command If the instrument is set for volts the alarm defaults to kelvin H300 term sets a high alarm setpoint of 300 degrees Select Low Alarm Setpoint Value Lxxx x Nothing Sets low alarm setpoint where xxx x temperature setpoint in units specified by FO command If the instrument is set for volts the alarm defaults to kelvin L31 2 term sets a low alarm setpoint of 31 2 degrees Alarm Reset R Nothing Resets the alarm Channel Dwell Time Model CYD208 Only Yab Nothing Sets dwell time for a given channel where a channel 1 8 and b the dwell time parameter as follows 0 zero seconds 1 5 seconds 2 10 seconds 3 30 seconds
29. ers dewars in accordance with manufacturer instructions Safety o instructions are normally posted on the side of each dewar Keep cryogenic dewars in a well ventilated place protected from the weather and NON away from heat sources Figure 1 1 shows a MAGNETIC typical cryogenic dewar Luo KEEP UPRIGHT 1 2 2 LHe and LN Safety Precautions Transfer LHe and LN2 and operate storage dewar controls in accordance with manufacturer supplier instructions During transfer follow all safety precautions written on the storage dewar and 0 recommended by the manufacturer Figure 1 1 Typical Cryogenic Dewar WARNING e Liquid helium is a potential asphyxiant and can cause rapid suffocation without warning Store and use in an adequately ventilated area DO NOT vent the container in confined spaces DO NOT enter confined spaces where gas may be present unless area is well ventilated If inhaled remove to fresh air If not breathing give artificial respiration If breathing is difficult give oxygen Get medical attention e Liquid helium can cause severe frostbite to exposed body parts DO NOT touch frosted pipes or valves For frostbite consult a physician immediately If a physician is unavailable warm the affected parts with water that is near body temperature Two essential safety aspects of handling LHe are adequate ventilation and eye and skin protection Although helium and nitrogen gases are non toxic
30. es The 3 contact terminal block is present on the rear panel as J3 ALARM The alarm contacts are designated 1 COM 2 with 1 representing the normally open state and 2 representing the normally closed state 3 5 2 Latched And Unlatched Alarms Alarms are either latched or unlatched The alarm is latched when the LATCH switch is in position 1 the alarm turns On when triggered by the alarm setpoint but will not automatically turn Off when the temperature returns to within the high and low setpoint range The alarm is unlatched when the LATCH switch is in position 0 the alarm turns On when triggered by the alarm setpoint and automatically turns Off when temperatures return to within the high and low setpoint range 3 5 3 Alarm Fix Function Model CYD208 Only Set the FIX switch on the Model CYD208 rear panel to OFF position 0 to continuously update the alarm relay depending on the alarm setpoint and sensor temperature If the FIX switch is ON position 1 the relay updates only when channel 1 input is active 3 6 SOFTCAL COMPENSATIONS SoftCal is a simple instrument configured software calibration that improves system accuracy over a specified temperature range lt reduces the error between a CY 7 diode and the Standard Curve 10 used by the instrument In short SoftCal generates inexpensive calibrations for CY 7 sensors used with OMEGA temperature controllers and monitors Operation 3 3 OMEGA Model CYD201 CYD208 User s Man
31. eve rated specifications 2 Configure 125 kQ resistor as shown in Figure 5 4 Set Model CYD208 to channel 1 3 Connect DVM voltage leads across the resistor and adjust the ADJ trimpot located on rear panel until DVM displays a voltage of 1 2500 volts 100 microvolts 4 Remove DVM and resistor Model CYD201 Model CYD208 aN 1 2 18 wow NWT VW 2 NOTE Do not use a voltmeter for A D Converter Calibration Figure 5 4 Calibration Connections Service 5 5 OMEGA Model CYD201 CYD208 User s Manual 5 7 2 A D Converter Calibration NOTE Current source calibration mustbe performed before A D converter calibration 1 Allow 30 minute warm up to achieve rated specifications 2 Perform current source calibration 3 Configure 125 kQ resistor as shown in Figure 5 4 Set Model 208s to channel 1 4 Wait 10 seconds for resistor voltage to settle 5 Press CAL ENABLE then within 2 seconds press UNITS The display window shows CAL for approximately 15 seconds 6 Repeat procedure with 25 kQ resistor 7 For Model CYD208 repeat procedure for other 7 channels See Figure 2 2 for pin assignments 5 8 SERIAL INTERFACE CABLE AND ADAPTERS TxD Gnd Gnd RxD YELLOW GREEN BLACK 123456 12zE LS9 Figure 5 5 Model CYD200 J10 RJ 11 Cable Assembly Wiring Details DB 25 CONNECTOR NOT USED ires RJ 11 RECEPTACLE Figure 5 6
32. ftware updates 1 1 MODEL CYD201 CYD208 GENERAL DESCRIPTION Model CYD201 CYD208 Digital Thermometers are ideal to monitor critical temperatures in chemical and materials research superconductivity measurements and low temperature physics The units feature e Broad Temperature Range 1 4 K to 475 K 272 C to 202 C e Single Channel CYD201 and Eight Channel CYD208 Models e For use with CY 7 Series DT 500 Series and other Silicon Diode Sensors e System Accuracy Instrument with Sensor with SoftCal to within 0 1 C or better e Temperature display in C F K or Sensor Voltage e High Low Alarm Setpoint with Interfacing Alarm Contacts Standard RS 232C Output of Temperature Input of Settings and Alarm Status for Remote Operation Introduction 1 1 OMEGA Model CYD201 CYD208 User s Manual Table 1 1 Model CYD201 CYD208 Specifications Display Four digit LED display Resolution 0 1 for values gt 100 or lt 100 0 01 for values between 100 lt T lt 100 Temperature Range 1 4 K to 475 K without probe 23 K to 473 K with probe System Accuracy To within 0 1K from 177 K to 313 K To 0 2 K or better from 30 K to 373 K 1 0 K above 373 K Sensor Excitation 10 uA constant current Repeatability lt 50 mK Input Range 0 to 3 volts with a resolution of 0 1 mV Hi Lo Alarm Setpoint 0 1 resolution Alarm Relay Single SPDT relay rated 28 VDC or Peak AC 0 25A 3 W max Scan Dwell The
33. ial Interface Connections The serial interface connector is a standard 6 wire RJ 11 modular telephone jack OMEGA Model CYD200 J10 data cables which maintain pin 1 polarity simplify interconnection OMEGA offers the Model CYD200 D RJ 11 to DB 25 adapter and Model CYD200 B RJ 11 to DE 9 adapter to connect to the host computer See Figure 4 2 Remote Operation 4 1 OMEGA Model CYD201 CYD208 User s Manual J2 SERIAL I O 1 RS 232C In RxD RS 232C In RxD RS 232C Ground RS 232C Ground RS 232C Out TxD RS 232C Out TxD i ONRAN Figure 4 1 Serial I O RJ Model CYD200 B Ru 11 to DB 25 Adapter To Customer Supplied Computer DB 25 Serial Interface Connector Model CYD200 B Ye RJ 11 to DE 9 Adapter To Customer Supplied Computer DB 9 Serial Interface Connector 11 Connector Pin Definitions RS 232C J2 SERIAL I O Interface Output on rear of Model CYD201 or LJ CYD208 Use whichever adapter that matches your computer serial interface connector Model CYD200 J10 RJ 11 Cable Assembly Figure 4 2 Serial Interface Connections 4 2 Remote Operation OMEGA Model CYD201 CYD208 User s Manual 4 1 2 Serial Interface Operation Remotely control all thermometer functions except SoftCal compensations from a computer with communications software and modem Located on the rear panel is a RJ 11 modular socket designated J2 SERIAL I O for host computer c
34. ide of the heater output connects directly to earth ground Shield sensor cables whenever possible Attach the shields to the connector shield pin 2 4 SENSOR INSTALLATION RECOMMENDATIONS See the OMEGA Product Catalog for sensor installation and specifications Call OMEGA for copies of application notes or sensor installation questions Below are general recommendations on sensor installation 1 Do not ground the sensor 2 Shield leads and connect shield wire to SHIELD on screw terminal connector only Do not connect shield at other end of cable 2 2 Installation OMEGA Model CYD201 CYD208 User s Manual 3 Keep leads as short as possible 4 Use twisted pair wire Use Duo Twist wire or equivalent for two wire or Quad Twist wire or equivalent for four wire applications 5 Thermally anchor lead wires 2 4 1 Two Lead Vs Four Lead Measurements In two lead measurement the leads that measure sensor voltage also carry the current The voltage measured at the instrument is the sum of the temperature sensor voltage and the IR voltage drop within the two current leads Since heat flow down the leads can be critical in a cryogenic environment wire of small diameter and significant resistance per foot is preferred to minimize this heat flow Consequently a voltage drop within the leads may exist Four lead measurement confines current to one pair of leads and measures sensor voltage with the other lead pair carrying no cur
35. if relay latching is desired plus 4 if the alarm fix is enabled High or Low Parameter H high alarm L low alarm Remote Operation WS Input Returned Remarks WY Input Returned Remarks OMEGA Model CYD201 CYD208 User s Manual Sample Sensor Reading and Alarm Status ws For a Model CYD201 returns sign sensor reading units alarm status CR LF For a Model CYD208 returns current channel sign sensor reading units alarm status CR LF Returns the sample sensor reading and alarm status where A active and I inactive Scan Status Model CYD208 Only WY scan status current channel number channel which caused the alarm state channel 1 dwell time channel 2 dwell time channel 8 dwell time CR LF Returns instrument scan status scanning or holding channel dwell information and scan position Scan Status Parameter H holding S scanning Channel Which Caused the Alarm State Parameter 1 through 8 or if alarm is inactive Channel dwell times are in seconds Sending this command with a Model CYD201 returns N to signify no scanner Remote Operation 4 7 4 8 OMEGA Model CYD201 CYD208 User s Manual This Page Intentionally Left Blank Remote Operation OMEGA Model CYD201 CYD208 User s Manual CHAPTER 5 SERVICE 5 0 GENERAL This chapter covers Model CYD201 CYD208 maintenance Model CYD201 Rear Panel Connections Paragraph 5 1 Model CYD208
36. k Use the procedure below to change line voltage WARNING To prevent shock hazard turn off instrument and disconnect it from AC line power and all test equipment before changing line voltage configuration 1 Turn power switch OFF and disconnect the power cord from the unit Disconnect all test equipment from unit 2 Remove all screws from rear a Ee panel Gently pull away rear panel and remove enclosure a 90 125 VAC cover by sliding it to the back PEUTING 3 Modify jumper configuration to desired line voltage see 6 4 Figure 5 3 00 210 250 VAC 4 Replace fuse to match new SETTING voltage requirements 5 Replace enclosure cover rear panel and all screws Figure 5 3 Line Voltage Jumper Configuration 5 4 Service OMEGA Model CYD201 CYD208 User s Manual 5 7 RECALIBRATION OMEGA calibrates and certifies thermometers to original factory specifications for a reasonable fee You can recalibrate the thermometer to original specifications but OMEGA will not warrant these calibrations Recalibration requires a digital voltmeter DVM with 4 digit resolution or better and 25 kQ and 125 KQ precision resistors with 0 01 tolerance or better Recalibration involves current source and analog digital A D converter calibration A D calibration erases all SoftCal compensations perform it after current source calibration not before 5 7 1 Current Source Calibration 1 Allow 30 minute warm up to achi
37. ly Discharge voltages below 4000 volts cannot be seen felt or heard 1 4 Introduction OMEGA Model CYD201 CYD208 User s Manual 1 3 1 Identifying ESDS Components Below are some industry symbols used to label components as ESDS CAUTION Wy K EN AA 1 3 2 Handling ESDS Components Observe all precautions necessary to prevent damage to ESDS components before installation Bring the device and everything that contacts it to ground potential by providing a conductive surface and discharge paths At a minimum observe these precautions 1 De energize or disconnect all power and signal sources and loads used with unit 2 Place unit on a grounded conductive work surface 3 Ground technician through a conductive wrist strap or other device using 1 MQ series resistor to protect operator 4 Groundany tools such as soldering equipment that will contact unit Contact with operator s hands provides a sufficient ground for tools that are otherwise electrically isolated 5 Place ESDS devices and assemblies removed from a unit on a conductive work surface or in a conductive container An operator inserting or removing a device or assembly from a container must maintain contact with a conductive portion of the container Use only plastic bags approved for storage of ESD material 6 Do not handle ESDS devices unnecessarily or remove from the packages until actually used or tested 1 4 SAFETY SUMMARY Observe these general s
38. n DIN a panel EIA rack space See Figure 2 3 6 2 MODEL CYD201 CYD208 WIRES LSCI P N DESCRIPTION OF CABLE Quad Twist Cryogenic Wire Two twisted pairs 9001 005 phosphor bronze wire 36 AWG 0 127 mm 0 005 inch diameter Duo Twist Cryogenic Wire Single twisted pair 9001 006 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 Quad Lead Cryogenic Wire Phosphor bronze wire flat 32 AWG 0 127 mm 0 005 inch diameter 9001 008 Any quality dual shield twisted pair wire for dewar to Model CYD201 CYD208 connector 6 2 Options and Accessories OMEGA Model CYD201 CYD208 User s Manual 6 3 MODEL CYD201 CYD208 SENSORS SENSOR NO DESCRIPTION OF SENSOR The smallest silicon diode Temperature Sensor Series DT 420 available Installs on flat surfaces Same silicon chip as Series CY 7 and DT 471 Silicon Diode Miniature Temperature Sensor Same Series DT 450 silicon chip as CY 7 designed to install in recesses as small as 1 6 mm dia by 3 2 mm deep Silicon Diode Temperature Sensor Repeatable Series CY 7 interchangeable accurate wide range customized for cryogenics An economical version of the CY 7 for applications Series DT 471 where temperature measurements below 10 K are not required Model CYD200 B RJ 11 to DB 25 Adapter
39. nd contact OMEGA Service 5 4 GENERAL MAINTENANCE Clean the CYD201 CYD208 periodically to remove dust grease and other contaminants Clean the front and back panels and case with a soft cloth dampened with a mild detergent and water solution NOTE Do not use aromatic hydrocarbons or chlorinated solvents to clean the Model CYD201 CYD208 They may react with the silk screen printing on the back panel Service 5 3 OMEGA Model CYD201 CYD208 User s Manual 5 5 FUSE REPLACEMENT WARNING To prevent shock hazard turn off instrument and disconnect it from AC line power and all test equipment before replacing fuse 1 Turn POWER switch Off and disconnect power cord from unit Disconnect all test equipment from unit 2 Remove all screws from rear panel Gently pull away rear panel and remove enclosure cover by sliding it to the back 3 Remove fuse with a fuse puller The fuse is located behind the transformer as shown in Figure 5 3 4 Replace with a 0 2 A fuse for 110 V 115 VAC operation or a 0 1 A fuse for 220 V 230 VAC operation Use slow blow fuses CAUTION Replace fuse with the same type and rating as specified by the line voltage selected 5 Replace enclosure cover rear panel and all screws 5 6 Line Voltage Configuration The rear panel 3 pronged line power connector permits Model CYD201 CYD208 operation at either 110 or 220 VAC The configuration is indicated on rear panel in the Line Voltage Selection Bloc
40. o the sensor through the base A thin braze joint around the sides of the SD package electrically connect to the sensing element Avoid contact to the sides with any electrically conductive material When installing the sensor make sure there are no electrical shorts or current leakage paths between the leads or between the leads and ground If IMI 7031 varnish or epoxy is used it may soften varnish type lead insulations so that high resistance shunts appear between wires if sufficient time for curing is not allowed Slide Teflon spaghetti tubing over bare leads when the possibility of shorting exists Avoid putting stress on the device leads and allow for thermal contractions that occur during cooling which could fracture a solder joint or lead if installed under tension at room temperature 2 4 Installation OMEGA Model CYD201 CYD208 User s Manual For temporary mounting in cold temperature applications apply a thin layer of Apiezon N Grease between the sensor and sample to enhance thermal contact under slight pressure The preferred method for mounting the CY 7 SD sensor is the OMEGA CO Adapter CAUTION OMEGA will not warranty replace any device damaged by user designed clamps or solder mounting For semi permanent mountings use Stycast epoxy instead of Apiezon N Grease NOTE Do not apply Stycast epoxy over the CY 7 SD package sensor stress may shift the readings In all cases periodically inspect the sensor mounting to
41. onnection Accessories CYD200 J10 RS 232C phone cord and CYD200 D RJ 11 to DB 25 adapter as well as a null modem adapter may be required to link the serial port of the host computer directly to the thermometer When programming a Model CYD201 CYD208 from the serial interface consider the following e Type commands in all CAPS The term free field indicates a floating decimal point placed any appropriate place in the string of digits term in examples indicates terminating characters placed by the user or where they appear on a returning character string from the unit e Leading zeros and zeros following a decimal point are not needed in a command string but they are sent in response to a query e Enter temperature to 0 1 degrees Greater precision truncates Temperature is limited from 0 to 475 K e Place no space between commands and the variable being sent 4 1 3 Sample Basic Program 10 OPEN COM1 300 0 7 1 RS AS 1 Open COM port 11 PRINT TYPE QUIT TO EXIT Print QUIT message 12 PRINT Print blank line 20 INPUT ENTER COMMAND A Get command to send 21 IF A QUIT THEN GOTO 100 Look for QUIT then quit 30 A A CHR 13 CHR 10 Adding CR and LF 40 PRINT 1 A Sending command string 45 R INSTR A W Scan CMD for W QUERRY 46 IF R 0 THEN GOTO 90 If not a QUERRY skip PRINT 50 FOR Z 1 TO 500 NEXT Z Short delay 60 LINE INPUT 1 B Read back CYD201 CY
42. ons ii Curve 0 DT 500DI 8B Voltage Temp Characteristics Curve 1 DT 500DI 8A Voltage Temp Characteristics Curve 2 DT 500DRC D Voltage Temp Characteristics Curve 3 DT 500DRC E1 Voltage Temp Characteristics Curve 4 CTI Diode Voltage Temp Characteristics Curve 5 DT 500DI 8C Voltage Temp Characteristics Curve 6 CY 7 Voltage Temp Characteristics PPPPPPP NOUSWN gt Table of Contents Model CYD200 D RJ 11 to DB 25 Adapter Wiring Details Model CYD200 B RJ 11 to DE 9 Adapter Wiring Details Serial Interface Adapters iii OMEGA Model CYD201 CYD208 User s Manual This Page Intentionally Left Blank Table of Contents OMEGA Model CYD201 CYD208 User s Manual CHAPTER 1 INTRODUCTION 1 0 GENERAL This chapter covers a general description of the Model CYD201 CYD208 Paragraph 1 1 Handling Liquid Helium and Liquid Nitrogen Paragraph 1 2 Electrostatic Discharge Paragraph 1 3 Safety Summary Paragraph 1 4 and Safety Symbols Paragraph 1 5 Due to the OMEGA commitment to continuous product improvement modifications may occur to the Model CYD201 CYD208 software with time Some of these changes result from Customer feedback about operation on various cryogenic systems We encourage comments or suggestions regarding this instrument Please return the instrument warranty card to ensure receipt of future so
43. prong detachable power cord for 120 VAC operation included Connect to rear panel UL IEC ICEE standard plug See Table 2 1 for fuse rating WARNING To prevent electrical fire or shock hazards do not expose this instrument to rain or excess moisture CAUTION Verify proper fuse installation and AC Line Voltage Selection Wheel on the Model CYD201 CYD208 rear panel set to available AC line voltage before inserting power cord and turning on the instrument Refer to Chapter 5 to change voltage configuration NOTE Do not attach the shield to earth ground at the sensor end It may introduce noise at the measurement end Table 2 1 Line Voltage and Fuse Rating Selection select Range Fuse 115 90 125 VAC 0 2 A Slow Blow 230 210 250 VAC 0 1 A Slow Blow To protect operating personnel the National Electrical Manufacturer s Association NEMA recommends and some local codes require grounded instrument panels and cabinets The 3 conductor power cable when plugged into an appropriate receptacle grounds the instrument Grounding and shielding signal lines are major concerns when setting up any precision instrument or system The CYD201 CYD208 includes ground isolation of sensor excitation to allow 4 wire measurement of diode voltage and resistance Improperly grounding sensor leads and shields can defeat this feature Model CYD201 CYD208 digital logic ties directly to earth ground for interface communication The low s
44. rent 2 4 1 1 Two Lead Measurement Sometimes system constraints dictate two lead measurement Connect the positive terminals V and l together and the negative terminals V and gt ia together at the instrument then run V two leads to the sensor Expect some loss in accuracy the voltage measured at the voltmeter equals the sum of the sensor voltage and the voltage drop across the connecting leads The exact measurement error depends on sensor sensitivity and variations resulting from changing temperature For example a 10 Q lead resistance results in a 0 1 mV voltage error The resultant temperature error at liquid helium temperature is only 3 mK but because of the lower sensitivity dV dT of the diode at higher temperatures it becomes 10 mK at liquid nitrogen temperature 2 4 1 2 Four Lead Measurement All sensors both two lead and four lead devices l can be measured in a four lead configuration to V eliminate the effects of lead resistance The exact Four Lead point at which the connecting leads solder to the Diode two lead sensor normally results in a negligible y temperature uncertainty Installation 2 3 OMEGA Model CYD201 CYD208 User s Manual 2 4 2 Connecting Leads To The Sensor Excessive heat flow through connecting leads to any temperature sensor may differ the temperature between the active sensing element and the sample to which the sensor mounts This reflects as a real
45. rent channel selected 2 9 POWER UP ERRORS On power up the CYD201 CYD208 checks internal memory If a problem exists an error message displays on the front panel of the instrument Er01 indicates a hardware problem in the instrument memory This error is not user correctable First perform the procedure in Paragraph 5 3 If unsuccessful then call the factory Er02 indicates a soft error in the instrument memory To correct this error close dip switch 1 on the rear panel for at least 5 seconds then open it Follow the calibration procedure described in Paragraph 5 3 after an error 2 reset OL indicates a voltage input overload This can be caused by an open sensor or diode sensor wired backwards Installation 2 9 2 10 OMEGA Model CYD201 CYD208 User s Manual This Page Intentionally Left Blank Installation OMEGA Model CYD201 CYD208 User s Manual CHAPTER 3 OPERATION 3 0 GENERAL This chapter covers the Units Key Paragraph 3 1 the Channel key Paragraph 3 2 Scan Mode Paragraph 3 3 Setting Dwell Times Paragraph 3 4 Alarm Operation Paragraph 3 5 SoftCal Compensations Paragraph 3 6 Calibration Paragraph 3 7 Verifying SoftCal Operation Paragraph 3 8 and Erasing SoftCal Compensations Paragraph 3 9 CEOMEGA CYD201 THERMOMETER CHANNEL mm ON SEOMEGA IL OFF CYD208 THERMOMETER Figure 3 2 Model CYD208 Front Panel 3 1 UNITS KEY UNITS selects different unit
46. s 9 Pressure Gauges I Instrumentation FLOW O Rotameters O Flowmeter Systems O Air Velocity Indicators 9 Turbine Paddlewheel Systems I Vortex Meters and Flow Computers pH O Electrodes O Benchtop Laboratory Meters Controllers 9 Calibrators Simulators O Transmitters YEOMEGA ENGINEERING INC An OMEGA Technologies Company OMEGA YOUR SOURCE FOR PROCESS MEASUREMENT AND CONTROL These are the FREE complete reference books you will want to keep within reach at all times Send for your LATEST COPY now TEMPERATUR ATI MEASUREMATE ENCYCLOPEDIA HANDBOOK AND One Omega Drive Box 4047 Stamford CT 06907 0047 Telex 996404 FAX 203 359 7700 Phone 203 359 1660 YEOMEGA ENGINEERING INC An OMEGA Technologies Company
47. s of measurement The thermometer reads in voltage or temperature C F or K Press UNITS to scroll through the various selections UNITS also determines if SoftCal is active Press and hold UNITS for 3 seconds If SoftCal is not active 000 appears in the display Operation 3 1 OMEGA Model CYD201 CYD208 User s Manual 3 2 CHANNEL KEY Model CYD208 Only CHANNEL scrolls through the eight possible sensor channels It also determines if scan mode is activated Hold 1 to 2 seconds to toggle scan mode On or Off A red light glows in the upper left channel display if scan mode is active 3 3 SCAN MODE Model CYD208 Only The thermometer can scan 8 channels or monitor 1 channel To enable scan mode press CHANNEL for 1 to 2 seconds to toggle scan mode On or Off If a light appears in upper left of channel display window then scan mode is On If the light does not appear the thermometer is in single channel mode Repeat action to reverse mode 3 4 SETTING DWELL TIMES Model CYD208 Only Set the time the thermometer pauses on each channel dwell for 5 10 30 or 60 seconds A dwell time of 0 instructs the thermometer to skip that particular channel To set the dwell 1 Hold CHANNEL for 3 seconds Do not release 2 While still pressing CHANNEL use UNITS to select the desired time 0 skip 5 10 30 or 60 seconds 3 Repeat procedure for each desired channel Default channel dwell is 5 seconds 3 5 ALARM OPE
48. temperature offset between what is measured and the true sample temperature Eliminate such temperature errors with proper selection and installation of connecting leads To minimize heat flow through the leads select leads of small diameter and low thermal conductivity Phosphor bronze or Manganin wire is commonly used in sizes 32 or 36 AWG These wires have a fairly low thermal conductivity yet electrical resistance is not large enough to create measurement problems Thermally anchor lead wires at several temperatures between room temperature and cryogenic temperatures to guarantee no heat conduction through the leads to the sensor 2 4 3 Sensor Mounting Before installing a diode sensor identify DT 470 SD which lead is the anode and which is the Diode Sensor Leads cathode When viewed with the base down and the leads towards the observer the anode is on the right and the cathode is on the left The OMEGA CY 7 SD silicon diode sensor lead configuration is shown to the right For other sensors read accompanying Coeds tende literature or consult the manufacturer to positively identify sensor leads Lead identification should remain clear even after sensor installation Record the sensor serial number and location On the CY 7 SD the base is the largest flat surface It is sapphire with gold metalization over a nickel buffer layer The base is electrically isolated from the sensing element and leads make all thermal contact t
49. they are dangerous because they replace air in a normal breathing atmosphere Liquid helium is an even greater threat because a small amount of liquid evaporates to create a large amount of gas Store and operate cryogenic dewars in open well ventilated areas Introduction 1 3 OMEGA Model CYD201 CYD208 User s Manual When transferring LHe and LN protect eyes and skin from accidental contact with liquid or the cold gas issuing from it Protect eyes with full face shield or chemical splash goggles safety glasses even with side shields are inadequate Always wear special cryogenic gloves Tempshield Cryo Gloves or equivalent when handling anything that is or may have been in contact with the liquid or cold gas or with cold pipes or equipment Wear long sleeve shirts and cuffless trousers long enough to prevent liquid from entering shoes 1 23 Recommended First Aid Post an appropriate Material Safety Data Sheet MSDS obtained from the manufacturer distributor at every site that stores and uses LHe and LN The MSDS specifies symptoms of overexposure and first aid If a person exhibits symptoms of asphyxia such as headache drowsiness dizziness excitation excessive salivation vomiting or unconsciousness remove to fresh air If breathing is difficult give oxygen If breathing stops give artificial respiration Call a physician immediately If exposure to cryogenic liquids or cold gases occurs restore tissue to normal bod
50. ual SoftCal calibrations are made at three temperature points liquid helium 4 2 K liquid nitrogen about 77 K and 305 K Below is the accuracy of the CY 7 SD 13 sensor 0 5 K 2 K to lt 30 K 0 25K 30K to lt 60 K 0 15 K_ 60Kto lt 345 K These values generally apply to all silicon diode sensors Only two point SoftCal calibrations appropriate for CY 7 series Band 11 11A sensors 0 25K 345 K to lt 375 K 1 0 K 375 K to 475 K This section covers the SoftCal Calibration Procedure Paragraph 3 6 1 Verifying SoftCal Operation Paragraph 3 6 2 and Erasing SoftCal Compensations Paragraph 3 6 3 3 6 1 SoftCal Calibration Procedure 1 Turn on thermometer 30 minutes prior to operation 2 Place the SET switch in position 1 3 Hold UNITS until 0 kelvin or equivalent in C or F displays The key acts as a toggle If the display rises release and press again 4 Press CAL ENABLE on rear panel with a pen tip The display reads SOF to indicate the unit is ready to erase the current SoftCal calibration Within 2 seconds press UNITS again The temperature display changes from SOF to the current SoftCal setting 5 Hold UNITS until the sensor temperature displays For example if setting SoftCal for liquid helium the display reads 4 2 K If setting for ice point the display reads 0 C 6 Verify sensor stabilization at calibration temperature 7 Press CAL ENABLE again SOF
51. ual This Page Intentionally Left Blank Operation OMEGA Model CYD201 CYD208 User s Manual CHAPTER 4 REMOTE OPERATION 4 0 GENERAL The Model CYD201 CYD208 Digital Thermometer Serial Interface can be used for both operation and service This chapter covers the Serial Interface Paragraph 4 1 and Serial Interface Commands Paragraph 4 2 4 1 SERIAL INTERFACE The Model CYD201 CYD208 has a serial interface for RS 232C communications with a host computer RS 232C is an unbalanced single ended non terminated line used over short distances typically 10 feet or less The Model CYD201 CYD208 serial interface complies with the electrical format of the RS 232C Interface Standard The serial interface connector is a standard 6 wire RJ 11 modular telephone jack This section covers Serial Interface Specifications Table 4 1 Serial Interface Connections Paragraph 4 1 1 Serial Interface Hardware Configuration and Adapters Figures 4 1 amp 4 2 Serial Interface Operation Paragraph 4 1 2 and Sample Basic and QuickBasic Programs Paragraphs 4 1 3 amp 4 1 4 respectively Table 4 1 Serial Interface Specifications Transmission Three Wire Connector RJ 11 Modular Telephone Socket Timing Format Asynchronous Transmission Mode Half Duplex Baud Rate 300 Bits per Character 1 Start 7 Data 1 Parity 1 Stop Parity Type Odd Data Interface Levels Transmits Receives Using EIA Levels Terminator LF OAH 4 1 1 Ser
52. verify good thermal contact to the mounting surface is maintained 24 4 Measurement Errors Due To AC Noise Poorly shielded leads or improperly grounded measurement systems can introduce AC noise into the sensor leads In diode sensors the AC noise shifts the DC voltage measurement due to the diode non linear current voltage characteristics When this occurs measured DC voltage is too low and the corresponding temperature reading is high The measurement error can approach several tenths of a kelvin To determine if this problem exists perform either procedure below 1 Place a capacitor across the diode to shunt induced AC currents Capacitor size depends on the noise frequency If noise is related to power line frequency use a 10 uF capacitor If AC coupled digital noise is suspected digital circuits or interfaces use a 0 1 to 1 uF capacitor In either case if measured DC voltage increases there is induced noise in the measurement system 2 Measure AC voltage across the diode with an AC voltmeter or oscilloscope Most voltmeters do not have the frequency response to measure noise associated with digital circuits or interfaces which operate in the MHz range For a thorough discussion of this potential problem and the magnitude of error which may result request the paper Measurement System Induced Errors In Diode Thermometry J K Krause and B C Dodrill Rev Sci Instr 57 4 661 April 1986 To greatly reduce potential
53. y temperature 98 6 F by bathing it in warm water not exceeding 105 F 40 C DO NOT rub the frozen part either before or after rewarming Protect the injured tissue from further damage and infection and call a physician immediately Flush exposed eyes thoroughly with warm water for at least 15 minutes In case of massive exposure remove clothing while showering with warm water The patient should not drink alcohol or smoke Keep warm and rest Call a physician immediately 1 3 ELECTROSTATIC DISCHARGE Electrostatic Discharge ESD may damage electronic parts assemblies and equipment ESD is a transfer of electrostatic charge between bodies at different electrostatic potentials caused by direct contact or induced by an electrostatic field The low energy source that most commonly destroys Electrostatic Discharge Sensitive ESDS devices is the human body which generates and retains static electricity Simply walking across a carpet in low humidity may generate up to 35 000 volts of static electricity Current technology trends toward greater complexity increased packaging density and thinner dielectrics between active elements which results in electronic devices with even more ESD sensitivity Some electronic parts are more ESDS than others ESD levels of only a few hundred volts may damage electronic components such as semiconductors thick and thin film resistors and piezoelectric crystals during testing handling repair or assemb
Download Pdf Manuals
Related Search