Omega Engineering CYD201 and CYD208 Do Not Operate In An Explosive Atmosphere, Safety Symbols

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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 Modify 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.

1.5SAFETY 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.

1-6

Introduction

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Contents M789-038A June Warranty Return Requests / InquiriesTable of Contents Table of Contents List of Illustrations This Page Intentionally Left Blank Table of Contents Chapter Introduction GeneralModel CYD201/CYD208 General Description Model CYD201/CYD208 Specifications ResolutionLHe and LN2 Safety Precautions Handling Cryogenic Storage DewarsHandling Liquid Helium and Liquid Nitrogen Recommended First Aid Electrostatic DischargeSafety Summary Identifying Esds ComponentsHandling Esds Components Ground The InstrumentSafety Symbols Do Not Operate In An Explosive AtmosphereKeep Away From Live Circuits Do Not Substitute Parts Or Modify InstrumentChapter Installation Inspection and UnpackingRepackaging for Shipment Power and Ground Requirements Sensor Installation RecommendationsTwo-Lead Vs Four-Lead Measurements Two-Lead MeasurementFour-Lead Measurement Connecting Leads To The Sensor Sensor MountingMeasurement Errors Due To AC Noise Sensor Input Connections J1 InputTerminal Description Sensor Curve Definition Rack MountingHole Sizes Model CYD208-DIN Rack MountingInitial Power UP Sequence Power UP ErrorsThis Page Intentionally Left Blank Installation Chapter Operation Units KEYAlarm Setpoint Scan Mode Model CYD208 OnlySetting Dwell Times Model CYD208 Only Alarm OperationLatched And Unlatched Alarms Alarm Fix Function Model CYD208 OnlySoftcal Compensations SoftCal Calibration Procedure Verifying SoftCal Operation Erasing SoftCal CompensationsOperation Chapter Remote Operation Serial Interface ConnectionsSerial Interface Serial I/O RJ-11 Connector Pin Definitions J2 Serial I/OSerial Interface Operation Sample Basic ProgramSerial Interface Command Summary Sample Quick Basic 4.0 ProgramInput ReturnedInput F0x Returned Nothing Input Hxxx.x Returned NothingInput Lxxx.x Returned Nothing Input R Returned NothingSwitch ID and Alarm Data High or Low Parameter H = high alarm, L = low alarmInput YCx Returned Nothing End Scanning Model CYD208 OnlySign,sensor reading,units,alarm status Crlf Current channel,sign,sensor reading,units, alarm statusCRLFScan Status Model CYD208 Only This Page Intentionally Left Blank Remote Operation Chapter Service Model CYD201 Rear Panel ConnectionsModel CYD208 Rear Panel Connections Model CYD208 Rear Panel ConnectionsError Code Troubleshooting General MaintenanceFuse Replacement Line Voltage ConfigurationCurrent Source Calibration RecalibrationModel CYD201 Model CYD208 2 A/D Converter Calibration Serial Interface Cable and AdaptersModel CYD200-B RJ-11 to DE-9 Adapter Wiring Details Page Chapter Options and Accessories Accessories Model Description of AccessoryModel Description of Accessory Model CYD201/CYD208 Wires Lsci P/N Description of CableDIN Model CYD201/CYD208 Sensors Sensor no Description of Sensor Series DT-420Series DT-450 Series CY-7Options and Accessories Appendix a Curve Tables A1.0 GeneralTable A-2. Curve 1 DT-500DI-8A Voltage-Temp. Characteristics Table A-3. Curve 2 DT-500DRC-D Voltage-Temp. Characteristics 6591 18.0 Table A-5. Curve 4 CTI Diode Voltage-Temp. Characteristics Table A-6. Curve 5 DT-500DI-8C Voltage-Temp. Characteristics Table A-7. Curve 6 CY-7 Voltage-Temp. Characteristics 305.0 50689 Page Page Temperature PRESSURE/STRAINFlow