Heinrichs Messtechnik GmbH
OPERATING MANUAL TMU-W / UMC4
Page 11 of 118
2.7
Maintenance
Transmitter
The transmitter is maintenance-free.
We recommend cleaning the viewing-glass of the transmitter at regular intervals; check the enclosure for
corrosion damages and the solid seat of the cable glands.
Warning!
In the event an enclosure lid O-ring gasket is damaged, humidity may enter the
enclosure and cause damage to the internal electronic circuits.
Indications of such are:
Visible discolouration’s or condensation on the viewing-glass of the transmitter,
corrosion damages to the enclosure,
Coriolis mass flow sensor
The sensor is largely maintenance-free. When handled correctly its functionality will only be impaired by
corrosion or deposits inside of the measuring tubes. Therefore, both should be implicitly avoided. Remove
deposits in the tubes and in or around the splitter on a regularly basis by means of a suitably washing
method. Failure to do so may result in a loss of measurement precision.
Warning!
In the event of a tube rupture, e.g. due to corrosion or damage, medium will leak into
and fill the enclosures body, which can lead to subsequent damage to the external
housing, particularly at high process pressures!
