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Instruction Manual
245364-V
May 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Contents iii
Model 755A
6-0 SERVICE AND MAINTENANCE ..........................................................................................6-1
6-1 Initial Checkout with Standard Gases ...................................................................................6-1
6-2 Detector Component Checks ................................................................................................6-2
a. Detector...........................................................................................................................6-2
b. Source Lamp...................................................................................................................6-2
c. Photocell .........................................................................................................................6-2
d. Suspension .....................................................................................................................6-2
6-3 Detector Component Replacement .......................................................................................6-3
a. Detector Replacement ....................................................................................................6-3
6-4 Source Lamp Replacement...................................................................................................6-5
a. Photocell Replacement and Adjustment.........................................................................6-7
6-5 Heating Circuits .....................................................................................................................6-7
a. Case Heater Control Circuit............................................................................................6-7
b. Detector/Magnet Heating Circuit.....................................................................................6-8
7-0 REPLACEMENT PARTS......................................................................................................7-1
7-1 Circuit Board Replacement Policy.........................................................................................7-1
7-2 Selected Replacement Parts.................................................................................................7-1
7-3 Matrix.....................................................................................................................................7-2
8-0 RETURN OF MATERIAL......................................................................................................8-1
8-1 Return Of Material .................................................................................................................8-1
8-2 Customer Service ..................................................................................................................8-1
8-3 Training..................................................................................................................................8-1
APPENDIX A - VAISALA BAROMETRIC PRESSURE TRANSDUCER..........................................A-1
A-1 Overview................................................................................................................................A-1
A-2 Circuit Function......................................................................................................................A-1
A-3 Installation..............................................................................................................................A-1
A-4 Adjustment.............................................................................................................................A-2
A-5 High Altitude Version (Option)...............................................................................................A-2