In-situ calibration of temperature sensors
On-site calibration functionality without sensor removal
Challenge
Temperature sensors age. Subjected to certain stress, they can suffer from drift of a few degrees over time. To maintain their initial accuracy in the long term, temperature sensors require frequent recalibration. This is a time-consuming effort as the sensors need to be removed from the process. Dismounting and reinstallation may also damage them, affecting process safety in the end.
Solution
OPTITEMP temperature sensors with in-situ calibration functionality allow for a calibration under process conditions using a calibrated reference sensor that is plugged into the installed sensor on-site to determine the measurement deviation. This makes calibration more efficient and accurate while minimising the risk of sensor errors and damages.
Safety benefits
Increased process safety due to accurate in-situ calibration of temperature sensors at given process conditions in the field
Less maintenance and increased plant uptime: No need to remove the temperature sensor from the process, calibration possible at any time
Reduced workload: In-situ calibration with reference sensor takes just 2-3 minutes
High process and equipment safety: Reduced potential for sensor damage as there is no installation/dismounting necessary
More accurate and less prone to error: in-situ calibration is done under real process conditions
All relevant parts incl. measuring insert, transmitter, wiring are considered
Measurement uncertainty is reduced to a minimum by adjusting the temperature transmitter or electronics accordingly
Cost-effective and comfortable alternative to conventional calibration procedures with expensive temperature calibrators or calibration baths
Safety aspects and solutions in temperature measurement
15th Sept '23
Temperature sensors in hazardous areas, in-situ calibration, parameterisation via NFC
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