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External Input Reference
Copper wire
Thermocouple
cable
External Input Reference.
by a separate temperature measuring device connected to another input, usually RT. This
input is processed in the normal way and then passed back into the thermocouple signal
processing system as a temperature reading.
250
Thermocouple CJC Compensation
_
Normal
signal
*
processing
+
Input
terminals
on rear
panel of
recorder
_
PT100
V
+
Copper
wire
The reference temperature reading in this method is provided
A
Thermocouple
Table (convert R/T
temp to Volts
C
Reading in Volts
Inputs
added
D
(C+D)
43-TV-25-35 GLO Iss.4 Dec 06 UK
Temperature
reading to maths
expression
Look-up table
(Volts)
(converts
voltage read-
ing to tem-
perature)
A5E01001767-04
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