Eppendorf TCA-3 Temperature Monitoring System - Manual (Page 43)

Calibration instructions
TCA-3 Temperature Monitoring System
English (EN)
43
6 Calibration instructions
6.1 Calibration requirements
The calibration requirements for the TCA-3 monitoring system will depend on the quality processes of the
end user, generally this would be once a year.
6.2 Single point calibration
Single point calibration is needed if the temperature being measured is always going to be around the value
of ±5 °C.
6.2.0.1 Requirements
• TCA-3 monitoring system
• Temperature probe connected to the TCA-3 monitoring system
• Access to Eppendorf software including login and password
• Calibrate temperature source/thermometer
6.2.0.2 Calibration instructions
In the Sensor Preferences make sure the Calibration Offset is set to 0.0 and the Calibration Gain is set to
1.0.
This is done by clicking on the Preferences Icon for that probe. In the Sensor Preferences window click
on the Advanced Tab, and then enter the two values.
• Set the temperature source to the required temperature (this will need to be the temperature that is
being permanently measured) if it is not calibrated verify using a thermometer.
• Place the temperature probe installed in the TCA-3 monitoring system into the temperature source and
allow to settle down, this may take a while.
• Take a note of the temperature of the temperature/thermometer and the temperature probe connected
to the TCA-3 monitoring system through the Eppendorf web service.
• If both readings are the same then the calibration of the TCA-3 monitoring system is correct.
• If there is a difference between the two readings then work out the value of the temperature source
reading the TCA-3 monitoring system reading.
• This value now needs to be entered into the Eppendorf web service for that probe. This is done by
clicking on the Preferences Icon for that probe. In the Sensor Preferences window click on the
Advanced Tab. Enter the value of the difference between the two readings into the Calibration Offset
box.
Example: If the source reading is 25.00 °C and the TCA-3 monitoring system reading is 22.80 °C. The
Calibration Offset would be 25.00 – 22.80 = 2.2 °C (2.2 is the value entered into the Calibration Offset box.)
The Calibration Gain stays as 1.0.