West Control Solutions CI 45 User Manual
Page 22
6.3
Temperature compensation, measured via INP2 (optional)
With thermocouple measurement via INP1, the required temperature compensation is possible by internal
measurement of the compensation temperature via an external reference (external TC) or by measurement via INP2.
With TC measurement via INP2, the following settings must be done:
•
setting in the function for:
ConF / Func / Fnc.1 = 10
•
input 1 for thermocouple input :
ConF / InP.1 / S.tYP = 0 … 18
•
Switch on input 2 for measurement :
ConF / InP.2 / I.Fnc = 1
•
Select suitable sensor element for input 2:
ConF / InP.2 / S.tYP
Example:
– For saving compensating cable, or unless suitable cables for special thermocouples are available, the
termperature at the thermocouple connecting terminal must be measured exactly by means of a resistance
thermometer (e.g. Pt100).
g
Unless input 2 is enabled for measurement, the unit generates error
E.3 (configuration error).
Please, note that there may be increased errors or even polarity errors with a thermocouple measuring range starting
only at 0°C (32°F), when the outside temperature is low.
Functions
- preliminary -
22
Temperature compensation, measured via INP2 (optional)
UNIFLEX CI 45
INP2
INP1
di1
8
7
6
3
2
1
5
4
+
Connection example