KROHNE BM 102 Handbook - Manual (Page 57)

BM 102 57
4 Service / Maintenance
Maintenance is normally not required in standard applications. However, heavy deposits on the
probe can cause measurement deviations or faulty operation. The measuring system is
comprised of:
• a signal converter,
• a probe,
• seals and
• a process connection.
4.1 Replacement of the signal converter
BM 102 servicing by the customer is limited by warranty to the removal and replacement of the
housing containing the potted signal converter. Other repairs must be done by KROHNE-
authorized service staff. For safety reasons, the signal converter must be detached from the
flange system under atmospheric conditions.
Before changing the converter and its housing:
• Disconnect gauge from the power supply before servicing.
• Ensure that the tank is at atmospheric pressure before servicing.
• Do not, under any circumstances, remove the locking ring (circlips), item A,
shown below – this is a critical pressure-bearing component: