4
ELECTRICAL CONNECTIONS
18
TT 51 SERIES
www.krohne.com
08/2015 - 4000754203 - MA TT 51 R03 en
4.3 Connection diagram of in-head transmitter
INFORMATION!
To enable HART
®
communication, the output circuit must have an output load of at least 250
Ω
.
Figure 4-1: Connection diagram
1
Voltage supply 10
…
36 VDC (terminals 6, 7)
2
Modem
3
Input
4
Output
5
SmartSense temperature sensor
6
Thermocouple
7
Pt100 3-wire connection
INFORMATION!
The HART
®
modem is connected parallel to the output load or parallel to the output of the
transmitter.
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