Universal Input Connections - Thermocouple (T/C); Universal Input Connections - Rtd Input; Figure 15. Thermocouple Input Connections; Figure 16. Rtd Input Connections - WEST P8700 User Manual

Universal Input Connections - Thermocouple (T/C)

Use only the correct thermocouple wire or compensating cable from the probe to the
instrument terminals avoiding joints in the cable if possible. Failure to use the correct wire
type will lead to inaccurate readings. Ensure correct polarity of the wires by cross-
referencing the colours with a thermocouple reference table.
4
5

Universal Input Connections - RTD input

For three wire RTDs, connect the resistive leg and the common legs of the RTD as
illustrated. For a two wire RTD a wire link should be used in place of the third wire (shown by
dotted line). Two wire RTDs should only be used when the leads are less than 3 metres long.
Avoid cable joints.
4
5
6
Four wire RTD's can be used, provided that the fourth wire is left unconnected. This wire
should be cut short or tied back so that it cannot contact any of the terminals on the rear of
the instrument.
Page 18
1 1
/ -DIN, / -DIN &
4 8
_
+
1
/ DIN
16
Figure 15. Thermocouple Input Connections
RTD
1
/ DIN
16
Figure 16. RTD Input Connections
Connections
1
/ - DIN Controllers & Indicators - Product Manual
16
_
3
2
+
1
/ DIN &
4
3
2
1
1
/ DIN &
4
1
/ DIN
8
RTD
1
/ DIN
8
59305, Issue 5 – March 2005