Connecting The Sensor - Endress+Hauser iTEMP TMT162 Bedienungsanleitung

iTEMP TMT162
5.2

Connecting the sensor

NOTICE
‣
ESD - electrostatic discharge. Protect the terminals from electrostatic discharge. Failure
to observe this may result in destruction or malfunction of parts of the electronics.
Terminal assignment
Sensor 1
TC
1
2
Sensor 2
TC
5
6
 4 Wiring the field transmitter
NOTICE
When connecting 2 sensors ensure that there is no galvanic connection between the
sensors (e.g. caused by sensor elements that are not isolated from the thermowell). The
resulting equalizing currents distort the measurements considerably.
‣
The sensors must remain galvanically isolated from one another by connecting each sensor
separately to a transmitter. The transmitter provides sufficient galvanic isolation (> 2 kV
AC) between the input and output.
Endress+Hauser
Sensor 1
3
2
4
1
S1
5 3
4 -
+
S2
+
3
6
-
-
2-wire
3
1
RTD
3 1
RTD
4
4
6
6
+ Bus connection and
supply voltage
-
3-wire
2
3
RTD
2
3
RTD
4
4
5 5
6 6
4-wire
1 4
3
RTD
1 4 3
Wiring
2 1
2 1
A0024515-EN
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