Heinrichs Messtechnik GmbH
OPERATING MANUAL TMU-W / UMC4
Page 25 of 118
Process conditions
For detailed information on the process conditions and specifications, please refer to section 3.3,
“Performance characteristics of the TMU-W sensor”.
When compact mounted, the process conditions can influence the operation of the transmitter if the
manufactures installation and operational conditions are not abided to.
Remote mounted transmitters are not affected by the prevailing process conditions of the sensor
Note:
Compact-mounted transmitters are not available for all versions of sensors.
4.6
DSB data memory module
The memory device is integrated on the PCB of the control unit where all sensor data such as sensor
constants, model numbers, serial numbers, and so on are stored. Consequently, the memory module is
linked to the sensor. If the transmitter’s electronics are exchanged for any reason, the control unit BE4 must
be removed from the old and installed onto the new electronic stack.
Warning:
When replacing the transmitter electronics, ensure that the applicable standards
and regulations pertaining to electrical devices, device installation and process
technology are abided to. The highly integrated electronic components of the UMC4
may be damaged when exposed to ESD hazards. Only when installed in the
transmitters enclosure are the electronics compliant to EMC standards.
Exchanging the Control Unit
To exchange the BE4 control unit abide to the following instructions referring to the image on the following
page.
After loosening the 4 screws situated below the foil, the control unit with the display can be detached
together with the foil. For this purpose, the foil itself does not need to be removed.
When transferring the BE4 PCB to a new electronic stack, care should be taken to ensure the correct seating
of the 10 poled connector. An incorrectly plugged connector will lead to malfunction and may also damage
the electronics.
