Heinrichs Messtechnik GmbH
Page 36 of 118
OPERATING MANUAL TMU-W / UMC4
The output terminals
For connection in explosive environments, the output signals of the UMC4 are available in various-protection
classes.
The designations of the terminals varies depending on the ordered protection class.
The terminal designation and their protection class can be taken from the following table:
Terminal Designation of the Signal Outputs
Designation
Terminal designation
and (Polarity)
Type of protection
Ex-device
Standard
device
Ex ia
non-Ex ia
(Non-Ex)
Current 1, 4 to 20mA with
HART
®
11(-) and 12(+)
x
x
41(-) and 42(+)
x
Current 2, 4 to 20mA
13(-) and 14(+)
x
x
43(-) and 44(+)
x
Binary output 1
(passive pulse)
16(-) and 17(+)
x
x
46(-) and 47(+)
x
Binary output 2 (status or 2nd
passive pulse output)
19(-) and 20(+)
x
x
49(-) and 50(+)
x
Table 7: Signal Output Terminals Designation
UMC4
UMC4-RM
Output Signals shown in Ex-ia type of protection
Sensor connection
Depending on the purchased transmitter variant and its associated sensor type, the connection to the UMC4
can be configured either with a pigtail cable, an IP67 terminal box, or in the case of the UMC4-RM with external
terminal blocks.
The pigtail cable version is mounted to the UMC4 during construction, is considered an integral part of the
transmitter and may only be dismantled/replaced by trained personal.
