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3.5.1 TC (Thermocouple) Connection
3.5 Process Input Connection
3.5.2 RTD Connection
Note 1 : In 3-wire system, use always cables of the same diameter (min 1mm²) Always use
wires of the same gauge and type whether a 2-wire or 3-wire system.
Note 2 : Install a jumper between terminals 2 and 3 when using a 2-wire RTD.
Note 3 : If the distance is longer than 10 meters, use 3-wire system
3-wire Pt-100 connection
(with line compensation)
(Max. Line impedance is 10 W)
2-wire Pt-100 connection
(without line compensation)
1 12 23 3
Pt-100
Note 1
Note 2
Pt-100
1 2 3
TC
Connect the wires with the polarity as shown in the
figure at left.
Always use compensation wire corresponding to the thermocouple used. If
present, the shield must be connected to a proper ground.
ii
Input resistance is greater than 10M W
ii
Input resistance is greater than 10M W
ii
Always use compensation wire corresponding to the thermocouple
used. If present, the shield must be connected to a proper ground.
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