Heinrichs Messtechnik GmbH
Ex- Supplement operating manual
UMC4 with TM/TMU/TME/TMR/TM-SH
Page
19 of 31
5.
Installation and Commissioning
The mounting instructions for the standard sensor also apply to the explosion-proof sensor.
Depending on the approval of the connected transmitter, the sensor may either be:
•
Compact mounted, mechanically fastened to the transmitter presenting a single unit.
or
•
Remotely installed and connected with a special sensor cable.
5.1
Special conditions for safe use for the UMC4
For the electrical connections, specially certified cable entries and/or plugs are to be used in
accordance with the prevailing type of protection and ambient temperature. Furthermore, the connection cable
used must be suitable for the prevailing ambient temperature range.
When conduit entries are connected to the transmitter enclosure, they must be certified for this
purpose and the associated stopping boxes must be mounted in the immediately vicinity of the enclosure.
Integral mounted transmitters are designed with intrinsically safe sensor circuits. All electrical relevant
values are coordinated by Heinrichs Messtechnik and not important for the user.
a)
For type UMC4-E***** and UMC4-D***** transmitters, and when using a connection cable other than
the manufactures specified cable, the intrinsic safety of the cable is to be validated using the cables
nominal parameters:
Cable capacitance 100 pF/m
L
L
= 0.7mH/km
Cable inductance 0,7 µH/m
L
L
= 0.5mH/km
For type UMC4-E***** transmitters the sensor cable must be installed in such a way that tensile force
is omitted.
Damaged threaded or flat joints which may impair the IP protection of the enclosure shall not be
repaired or modified. The equipment shall be returned to the manufacturer for repair and replacement.
5.2
General conditions for safe operation
If the conditions described in this document are not adhered to or if there is any inappropriate
interference with the equipment, the manufactures warranties expire.
Conditions described in this manual, as well as the permitted operating conditions which have been
defined for the sensor and which are stated on the rating plates must be adhered to.
Appropriate measures shall be met to prevent any unintentional or inadmissible damage to the device.
The operator shall ensure that the equipment is only installed in areas which comply with the approved
types of protection and environments.
All connected electrical equipment must be suitable for its intended use.
The operator shall ensure protection against lightning according to local regulations
The danger of objects falling onto the sensor shall be excluded
The maximum process temperature of 260 °C is only permitted for periods of maximum 1 hour, for
example during the ramping up of the process temperature, or temperature regulation. Prolonged
