Fluke 2620A - Chapter 6: Maintenance and Performance

6-1
Chapter 6
Maintenance
Title Page
Introduction ....................................................................................................... 6-3
Cleaning............................................................................................................. 6-3
Line Fuse........................................................................................................... 6-3
Self-Test Diagnostics and Error Codes............................................................. 6-3
Performance Tests............................................................................................. 6-4
Accuracy Verification Test........................................................................... 6-7
Channel Integrity Test................................................................................... 6-7
Thermocouple Measurement Range Accuracy Test..................................... 6-9
4-Terminal Resistance Test........................................................................... 6-10
Thermocouple Temperature Accuracy Test.................................................. 6-11
Open Thermocouple Response Test ............................................................. 6-13
RTD Temperature Accuracy Test................................................................. 6-14
RTD Temperature Accuracy Test (Using Decade Resistance Source).... 6-14
RTD Temperature Accuracy Test (Using DIN/IEC 751)......................... 6-15
Digital Input/Output Verification Tests........................................................ 6-15
Digital Output Test................................................................................... 6-16
Digital Input Test...................................................................................... 6-16
Totalizer Test............................................................................................ 6-17
Totalizer Sensitivity Test.......................................................................... 6-18
Dedicated Alarm Output Test....................................................................... 6-19
External Trigger Input Test........................................................................... 6-21
Calibration......................................................................................................... 6-21
Variations in the Display................................................................................... 6-22
Service............................................................................................................... 6-22