Hi,
Normally DT is calibrated until it's input connection terminal. That means the reading is taken at the connection terminal. Is it possible to calibrate the DT with the external wiring. What I am trying to do is to extend the input point. In this case, the external wire resistance is effecting the reading. It is a small effect only, if I want to correct it, is there any way? (Other than scaling ;).

TQ [Chandran]

Good morning Chandran,

Yes you can. What you are asking is for a system calibration where the inputs to the sensors, cable length etc are all taken into account.

Cheers,
Roger

Can you explain how or which page of the manual explains it?

Tq. Chandran

Good morning TC,

The calibration method is nothing to do with the dataTaker
That is up to the calibration authority and their processes but put simply if you are calibrating a temperature sensor then the sensor attached to the dataTaker with all the appropriate wiring and the sensor is placed in a temperature reference and subjected to the appropriate temperatures.

The the calibration temperature is read along with the dataTaker output and then the errors and uncertainties are calculated.
The process is very much the same for any other measurement type (Voltages, current, resistance etc.)

We have a NATA certified laboratory here which can provide this service and all countries have their own certification process.
It all depends on the certification level you require. In Australia NATA is the highest available.

Cheers,
Roger