Omega Engineering CYD201, Operator'S Manual

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OMEGA Model CYD201/CYD208 User’s Manual
Table of Contents i
TABLE OF CONTENTS
Chapter/Paragraph Title Page
1 INTRODUCTION ..........................................................................1-1
1.0
General.......................................................................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
2
Safety Precautions ............................1-3
1.2.3 Recommended First Aid .........................................1-4
1.3 Electrostatic Discharge...............................................1-4
1.3.1 Identifying ESDS Components ...............................1-5
1.3.2 Handling ESDS Components..................................1-5
1.4 Safety Summary .........................................................1-5
1.5 Safety Symbols...........................................................1-6
2 INSTALLATION ...........................................................................2-1
2.0
General.......................................................................2-1
2.1 Inspection and Unpacking ..........................................2-1
2.2 Repackaging For Shipment ........................................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 Mounting.....................................................2-4
2.4.4 Measurement Errors Due to AC Noise....................2-5
2.5 Sensor Input Connections ..........................................2-6
2.6 Sensor Curve Definition..............................................2-7
2.7 Rack Mounting............................................................2-7
2.8 Initial Power Up Sequence .........................................2-9
2.9 Power Up Errors .........................................................2-9
3 OPERATION ................................................................................3-1
3.0
General.......................................................................3-1
3.1 Units Key ....................................................................3-1
3.2 Channel Key (Model CYD208 Only) ...........................3-2
3.3 Scan Mode .................................................................3-2
3.4 Setting Dwell Times....................................................3-2
3.5 Alarm Operation .........................................................3-2
3.5.1 Alarm Setpoint ........................................................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 ..........................................3-3
3.6.1 SoftCal™ Calibration Procedure.............................3-4
3.6.2 Verifying SoftCal™ Operation .................................3-5
3.6.3 Erasing SoftCal™ Compensations .........................3-5