Super Systems DAQ - Manual (Page 24)

Super Systems Inc. Page 24 of 34 DAQ Operations Manual
The user will need a thermocouple calibrator capable of outputting a thermocouple signal to
calibrate the zero, span or cold junction value of the analog input board. The user will need to
connect the calibrator to one of the inputs on the board that will be calibrated. It is
recommended to let everything (calibrator and input board) sit for approximately thirty minutes
to allow the temperature to achieve equilibrium. Set up the calibrator for the specific
thermocouple type of the thermocouples in the analog input board, i.e. type K, type J, etc. Then,
source a specific temperature, like 1000 °F, or millivolt to the connected input. It is
recommended that the actual temperature used be similar to an appropriate process
temperature. For example, if your equipment normally operates at 1700 °F, then perform the
cold junction calibration using a 1700 °F signal. It is important to note that when performing a
zero or span calibration, do not use regular thermocouple wiring. Instead, use any kind of
regular sensor wire, or even regular copper wire. To perform the calibrations, the user will
need a calibrator that is capable of outputting volts, millivolts, and temperature.
Below is a listing of the suggested ranges for the various TC types.
TC Type mV Range Chart
TC Type Range in mV
B 20
C 40
E 80
J 80
K 80
N 80
NNM 80
R 40
S 20
T 20