©Isothermal Technology
Page 34 of 61
914 millisKanner manual Iss. 1.00
6
6
6
6
Calibration
Calibration
Calibration
Calibration
The only part of the millisKanner that requires routine calibration is the reference
junction temperature sensor. There is a single sensor for all the channels. The software
in the milliK that is used to check and adjust its reference junction temperature sensor
can also be used to check and adjust the calibration of the reference junction sensor in
any attached millisKanner.
The millisKanner uses a high quality semiconductor sensor to measure the reference
junction temperature in order to ensure good long-term stability. We recommend that
you check its calibration annually using the procedures given below. Alternatively, we can
provide a traceable calibration of your millisKanner at one of our approved calibration
centres (contact Isothermal Technology or one of our appointed distributors for details).
6.1
6.1
6.1
6.1
Before You Check the Calibration
Before You Check the Calibration
Before You Check the Calibration
Before You Check the Calibration
Any calibration should be performed in a temperature controlled environment between
19°C and 25°C. The millisKanner should be powered up and left to stabilise in the
calibration environment for at least 2 hours before checking or adjusting calibration.
6.2
6.2
6.2
6.2
Checking the Reference Junction Sensor
Checking the Reference Junction Sensor
Checking the Reference Junction Sensor
Checking the Reference Junction Sensor
Check the accuracy of the internal reference junction compensation (RJC) system by
connecting a thermocouple to any of the millisKanner channels and measuring a known
temperature using internal RJC mode. Any discrepancy between the measured and known
temperature indicates an error in the RJC system (or the thermocouple used). You can
use any thermocouple type for the measurement, but we recommend type J
thermocouples as these have high sensitivity near room temperature and are readily
available (the thermocouple needs to be fitted with a type J miniature thermocouple
plug).
