MKS Baratron 722B, Instruction Manual

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Chapter Five: Maintenance and Troubleshooting UGeneral
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Chapter Five: Maintenance and Troubleshooting
General
In general, no maintenance is required other than proper installation and operation, and an
occasional zero adjustment. If a transducer fails to operate properly upon receipt, check for
shipping damage, and check the power/signal cable for correct continuity. Any damage should
be reported to the carrier and MKS Instruments immediately. If there is no obvious damage and
the continuity is correct, obtain an ERA Number (Equipment Return Authorization Number)
before returning the unit to MKS Instruments for service.
Caution
Only qualified individuals should perform the installation and any
user adjustments. They must comply with all the necessary ESD and
handling precautions while installing and adjusting the instrument.
Proper handling is essential when working with all highly sensitive
precision electronic instruments.
In production operations, verify the transducer zero (and adjust if necessary) each time the
equipment is shut down for routine maintenance.
Periodically check for wear on the cables and inspect the enclosure for visible signs of damage.
Note
The zero adjustment is the only adjustment that should usually be made in
the field. Only adjust the span setting if you have access to proper
calibration standards. Return the transducer to MKS Instruments for other
adjustments, calibration, or servicing.
Zero Adjustment
All pressure transducers require initial and periodic zero adjustments. Make these adjustments at
a pressure
lower than the transducer’s minimum resolution to achieve the full dynamic range
specified for the transducer. Refer to How To Zero the 722B Transducer, page 56, for
instructions on adjusting the zero setting.