Calibration Using An External Standard Pt100 Sensor - Omega CL551 User Manual

7.1.2

Calibration using an external standard Pt100 sensor

•
Start the calibration procedure only at ambient temperature.
•
Insert both the sensor under test and the external standard Pt100 in the relevant holes of the thermal equalizing block
and keep the sensing elements of the probes at the same depth as indicated in the figure below.
The errors of temperature, due to the differences in depths, remain within ± 0.2 °C.
•
Switch -ON- the instrument
•
Verify the reading temperature of the reference sample with the values reported on the Certificate of Conformity make
necessary relative variations.
•
Calibrate the value read on the sensor under test with the correct value reported on the official Certificate of
Conformity.
•
The check can be accomplished with several temperature values. In order to follow this procedure just set up the set-
point to the relevant temperature value and wait for stabilization.
•
The external standard Pt100 must be connected to the back panel connector using the component supplied as a
standard accessory.
•
The new configuration must be selected through the set-up procedure.
185.0
40.0
Internal Pt100
Recommended
Dept
NO
OK
14