Connecting Thermocouple Inputs - Data Translation DT9871 User Manual

Connecting Thermocouple Inputs

The DT9871U, DT9871, and DT9874 instruments contain thermocouple jacks for connecting
thermocouple inputs.
Note: On the standard DT9874 instrument, channels 0 to 15 correspond to the thermocouple
input channels.
Internally, these signals are connected in differential mode. You can mix and match the
following thermocouple types across channels: B, E, J, K, N, R, S, and/or T.
Each thermocouple input jack is polarized and accepts a mating plug in the appropriate
orientation.
thermocouple types for both the ANSI (American) and IEC (International) standards.
Thermocouple
Standard
ANSI
IEC
For more information on thermocouple standards, refer to the following web site:
http://www.omega.com/thermocouples.html.
Table 1 lists the color designations for the + and – polarities of the supported
Table 1: Thermocouple Color Designation Standards
Thermocouple
Type
Type J
Type K
Type T
Type E
Type S
Type R
Type B
Type N
Type J
Type K
Type T
Type E
Type S
Type R
Type B
Type N
Wire Color Coding Wire Color Coding
+ Polarity
White Red
Yellow Red
Blue Red
Violet Red
Black Red
Black Red
Gray Red
Orange Red
Black White
Green White
Brown White
Violet White
Orange White
Orange White
Gray White
Pink White
Wiring Signals
– Polarity
45