Heinrichs Messtechnik GmbH
Page 16 of 31
Ex-Supplement operating manual
UMC4 with TM/TMU/TME/TMR/TM-SH
4.5.3.3
Cable and conduit entries
Cable and conduit entries are not part of the instrument and have to be supplied by the operator according the
relevant way of installation. They have to be certified for the type of protection of the transmitter and fit to the
cables used.
The transmitter series UMC4 for temperature class T4 does not have own ignition sources as long the
transmitter runs in smooth operation. Therefore explosion proof certified cable and conduit entries with sealing
ring can be used. See also EN 60079-14/10.3.
4.5.3.4
Equipotential bonding
When the sensor is mounted externally (remote mount configuration), equipotential bonding between
the sensor and transmitter is to be realized. Terminals are provided on the outside of the sensor and
transmitter for this purpose.
4.5.4
Parameters for the UMC4 transmitter
4.5.4.1
Power circuit (terminals L, N and PE)
Nominal voltage
AC
90 to 230 V
Max. voltage
Um
AC
265
V
Nominal voltage
AC
24
V
Max. voltage
Um
AC
60
V
Nominal voltage
DC
19 to 36 V
Max. voltage
Um
DC
60
V
4.5.4.2
Passive non-intrinsically safe circuits
Current output 1 (terminals 41 to 42)
Current output 2 (terminals 43 to 44)
Binary output 1, passive (terminals 46 to 47)
Binary output 2, passive (terminals 49 to 50)
Voltage
Um
AC/DC
60
V
Max. current of power supply
500
mA
