Endress+Hauser iTEMP TMT162 - Terminal Assignment

Wiring iTEMP TMT162
16 Endress+Hauser
Terminal assignment
3
3
3
3
3
3
1
1
1
1
1
1
1
4
4
2
2
2
2
2
R
TD
RTD
RTD
Ω
5
5
5
6
6
6
6
RTD
RTD
6
4
4
4
4
T
C
TC
Ω Ω
ΩΩ
+
-
1
2
3
4
5
6
-
+
3
S2
-
+
-
3
4
S1
4-wire
2-wire 3-wire
Bus connection and
supply voltage
Sensor 1
Sensor 2
Sensor 1
Sensor 2
A0024515-EN
 5 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.
The following connection combinations are possible when both sensor inputs are assigned:
Sensor input 1
Sensor input 2
RTD or
resistance
transmitter,
two-wire
RTD or
resistance
transmitter,
three-wire
RTD or
resistance
transmitter,
four-wire
Thermocouple
(TC), voltage
transmitter
RTD or resistance
transmitter, two-wire
  - 
RTD or resistance
transmitter, three-
wire
  - 
RTD or resistance
transmitter, four-wire
- - - -
Thermocouple (TC),
voltage transmitter
   