M789-038A 15 June 1999  

OMEGA Model CYD201/CYD208 User’s Manual1-4 IntroductionWhen transferring LHe and LN2, protect eyes and skin from accidentalcontact with liquid or the

OMEGA Model CYD201/CYD208 User’s ManualIntroduction 1-51.3.1 Identifying ESDS ComponentsBelow are some industry symbols used to label components as ES

OMEGA Model CYD201/CYD208 User’s Manual1-6 IntroductionDo Not Operate In An Explosive AtmosphereDo not operate the instrument in the presence of flamm

OMEGA Model CYD201/CYD208 User’s ManualInstallation 2-1CHAPTER 2INSTALLATION2.0 GENERALThis chapter covers Inspection and Unpacking (Paragraph 2.1),Re

OMEGA Model CYD201/CYD208 User’s Manual2-2 Installation2.3 POWER AND GROUND REQUIREMENTSThe Model CYD201/CYD208 requires a power source of 90 to 125 o

OMEGA Model CYD201/CYD208 User’s ManualInstallation 2-33. Keep leads as short as possible.4. Use twisted-pair wire. Use Duo-Twist™ wire (or equivalent

OMEGA Model CYD201/CYD208 User’s Manual2-4 Installation2.4.2 Connecting Leads To The SensorExcessive heat flow through connecting leads to any tempera

OMEGA Model CYD201/CYD208 User’s ManualInstallation 2-5For temporary mounting in cold temperature applications, apply a thin layerof Apiezon® N Grease

OMEGA Model CYD201/CYD208 User’s Manual2-6 Installation2.5 SENSOR INPUT CONNECTIONSThe Model CYD201 has one rear panel 4-pin sensor input connectordes

OMEGA Model CYD201/CYD208 User’s ManualInstallation 2-72.6 SENSOR CURVE DEFINITIONTo display accurate temperature, select a response curve that matche

OMEGA Model CYD201/CYD208 User’s ManualAWARRANTYOMEGA warrants this unit to be free of defects in materials and workmanship and to givesatisfactory se

OMEGA Model CYD201/CYD208 User’s Manual2-8 InstallationABAABA0.265 (6.73)0.215 (5.46)Model CYD201 or CYD208 Front PanelHole Sizes:A = 0.189 (0.480) Di

OMEGA Model CYD201/CYD208 User’s ManualInstallation 2-92.8 INITIAL POWER UP SEQUENCEThe test sequence below occurs at power up.1. All display segments

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OMEGA Model CYD201/CYD208 User’s ManualOperation 3-1CHAPTER 3OPERATION3.0 GENERALThis chapter covers the Units Key (Paragraph 3.1), the Channel key(Pa

OMEGA Model CYD201/CYD208 User’s Manual3-2 Operation3.2 CHANNEL KEY (Model CYD208 Only)CHANNEL scrolls through the eight possible sensor channels. It

OMEGA Model CYD201/CYD208 User’s ManualOperation 3-32. Hold UNITS until the desired temperature displays. UNITS is a toggle; ifit is released and pres

OMEGA Model CYD201/CYD208 User’s Manual3-4 OperationSoftCal™ calibrations are made at three temperature points: liquid helium(4.2 K), liquid nitrogen

OMEGA Model CYD201/CYD208 User’s ManualOperation 3-53.6.2 Verifying SoftCal™ OperationCheck the status of SoftCal™ by holding UNITS for 2-3 seconds. I

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OMEGA Model CYD201/CYD208 User’s ManualRemote Operation 4-1CHAPTER 4REMOTE OPERATION4.0 GENERALThe Model CYD201/CYD208 Digital Thermometer Serial Inte

OMEGA Model CYD201/CYD208 User’s ManualTable of Contents iTABLE OF CONTENTSChapter/Paragraph Title Page1 INTRODUCTION...

OMEGA Model CYD201/CYD208 User’s Manual4-2 Remote OperationFigure 4-1. Serial I/O (RJ-11) Connector Pin DefinitionsTo Customer Supplied ComputerDB-9 S

OMEGA Model CYD201/CYD208 User’s ManualRemote Operation 4-34.1.2 Serial Interface OperationRemotely control all thermometer functions, except SoftCal™

OMEGA Model CYD201/CYD208 User’s Manual4-4 Remote Operation4.1.4 Sample Quick Basic 4.0 ProgramSTARTUP: OPEN “COM1:300,O,7,1,RS” FOR RANDOM AS #1‘open

OMEGA Model CYD201/CYD208 User’s ManualRemote Operation 4-5F0 Sets Sensor Units for Temperature Display.Input:F0xReturned:NothingRemarks:Sets sensor u

OMEGA Model CYD201/CYD208 User’s Manual4-6 Remote OperationYC Channel Scanner Channel (Model CYD208 Only).Input:YCxReturned:NothingRemarks:Asynchronou

OMEGA Model CYD201/CYD208 User’s ManualRemote Operation 4-7WS Sample Sensor Reading and Alarm Status.Input:WSReturned:For a Model CYD201, returns:[sig

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OMEGA Model CYD201/CYD208 User’s ManualService 5-1CHAPTER 5SERVICE5.0 GENERALThis chapter covers Model CYD201/CYD208 maintenance: Model CYD201Rear Pan

OMEGA Model CYD201/CYD208 User’s Manual5-2 Service5.2 MODEL CYD208 REAR PANEL CONNECTIONSFigure 5-2. Model CYD208 Rear Panel ConnectionsJ1 INPUTS: Acc

OMEGA Model CYD201/CYD208 User’s ManualService 5-35.3 ERROR CODE TROUBLESHOOTINGOn power up, the CYD201/CYD208 checks internal memory. If a problemexi

OMEGA Model CYD201/CYD208 User’s Manualii Table of ContentsTABLE OF CONTENTS (Continued)Chapter/Paragraph Title Page4 REMOTE OPERATION...

OMEGA Model CYD201/CYD208 User’s Manual5-4 Service5.5 FUSE REPLACEMENTWARNING: To prevent shock hazard, turn off instrument anddisconnect it from AC l

OMEGA Model CYD201/CYD208 User’s ManualService 5-55.7 RECALIBRATIONOMEGA calibrates and certifies thermometers to original factoryspecifications for a

OMEGA Model CYD201/CYD208 User’s Manual5-6 Service5.7.2 A/D Converter CalibrationNOTE: Current source calibration must be performed before A/D convert

OMEGA Model CYD201/CYD208 User’s ManualService 5-7543219876= NOTUSED654321DE-9 CONNECTORRJ-11RECEPTACLEGndRxDTxDFigure 5-7. Model CYD200-B RJ-11 to DE

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OMEGA Model CYD201/CYD208 User’s ManualOptions and Accessories 6-1CHAPTER 6OPTIONS AND ACCESSORIES6.0 GENERALThis chapter lists options, accessories,

OMEGA Model CYD201/CYD208 User’s Manual6-2 Options and AccessoriesACCESSORIES (continued)MODEL DESCRIPTION OF ACCESSORY2083-1Sensor Probe. 12-foot (3.

OMEGA Model CYD201/CYD208 User’s ManualOptions and Accessories 6-36.3 MODEL CYD201/CYD208 SENSORSSENSOR NO. DESCRIPTION OF SENSORSeries DT-420The smal

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OMEGA Model CYD201/CYD208 User’s ManualAppendix A A-1APPENDIX ACURVE TABLESA1.0 GENERALThe following curve tables apply to the Model CYD201/CYD208: Cu

OMEGA Model CYD201/CYD208 User’s ManualTable of Contents iiiLIST OF ILLUSTRATIONSFigure No. Title Page1-1 Typical Cryogenic Dewar...

OMEGA Model CYD201/CYD208 User’s ManualTable A-2. Curve 1: DT-500DI-8A Voltage-Temp. CharacteristicsTemp. PROMBP # (K) VoltageTemp. PROMBP # (K) Volta

OMEGA Model CYD201/CYD208 User’s ManualAppendix A A-3Table A-3. Curve 2: DT-500DRC-D Voltage-Temp. CharacteristicsTemp. PROMBP # (K) VoltageTemp. PROM

OMEGA Model CYD201/CYD208 User’s ManualTable A-4. Curve 3: DT-500DRC-E1 Voltage-Temp. CharacteristicsTemp. PROMBP # (K) VoltageTemp. PROMBP # (K) Volt

OMEGA Model CYD201/CYD208 User’s ManualAppendix A A-5Table A-5. Curve 4: CTI Diode Voltage-Temp. CharacteristicsTemp. PROMBP # (K) VoltageTemp. PROMBP

OMEGA Model CYD201/CYD208 User’s ManualTable A-6. Curve 5: DT-500DI-8C Voltage-Temp. CharacteristicsTemp. PROMBP # (K) VoltageTemp. PROMBP # (K) Volta

OMEGA Model CYD201/CYD208 User’s ManualAppendix A A-7Table A-7. Curve 6: CY-7 Voltage-Temp. CharacteristicsTemp. PROMBP # (K) VoltageTemp. PROMBP # (K

OMEGA Model CYD201/CYD208 User’s ManualTable A-7. Curve 6: CY-7 Voltage-Temp. Characteristics (Continued)Temp. PROMBP # (K) VoltageTemp. PROMBP # (K)

NOTES

NOTES

TEMPERATUREThermocouple, RTD & Thermistor Probes & AssembliesConnector Systems and PanelsWire: Thermocouple, RTD, and ThermistorCalibrators an

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OMEGA Model CYD201/CYD208 User’s ManualIntroduction 1-1CHAPTER 1INTRODUCTION1.0 GENERALThis chapter covers a general description of the Model CYD201/C

OMEGA Model CYD201/CYD208 User’s Manual1-2 IntroductionTable 1-1. Model CYD201/CYD208 SpecificationsDisplay: Four-digit LED displayResolution:0.1 for

OMEGA Model CYD201/CYD208 User’s ManualIntroduction 1-31.2 HANDLING LIQUID HELIUM AND LIQUID NITROGENHelium and Nitrogen are colorless, odorless, and