Apparatus for monitoring a measurement transmitter of a...

Details Apparatus for monitoring a measurement transmitter of a... Apparatus for monitoring a measurement transmitter of a...

2004-04-02

2008-03-18

Pope, Daryl C (Department: 2612)

Communications: electrical

Condition responsive indicating system

With particular coupling link

C340S539240, C340S539280, C340S602000

Reexamination Certificate

active

07345581

ABSTRACT:
An apparatus for monitoring a measurement transmitter of a field device determining and/or monitoring a physical and/or chemical process parameter, wherein at least one sensor is provided inside the a housing, in which the transmitter is arranged. The sensor determines the temperature and relative humidity in the housing over a period of time in predetermined intervals, and a control-/evaluation-unit is provided, which, on the basis of the measured temperature and relative humidity, determines the absolute humidity and/or the dewpoint in the housing of the transmitter, and issues and alarm when the absolute humidity and/or the dewpoint in the housing of the transmitter reaches a critical value.

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