Temperature Measurement
New Thermometer Detects Each Sensor’s Drift Over the Entire Measuring Range

From Nadine Daniel, Product Manager Process Instrumentation Temperature, WIKA Alexander Wiegand 5 min Reading Time

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As digitalisation continues to advance, the demands on process instruments are increasing and everyone today is talking about condition monitoring. Continuous self-monitoring of electrical thermometers tends to be restricted, however, because sensor drift remains unnoticed until the next calibration date. This problem has now been solved.

The T38 is the first thermometer that immediately detects any deviation of the sensor over the entire measuring range and informs the user depending on the configuration.(Source:  Wika)
The T38 is the first thermometer that immediately detects any deviation of the sensor over the entire measuring range and informs the user depending on the configuration.
(Source: Wika)

Temperature is the most frequently measured parameter in the process industry. The measuring points required for this purpose can run into thousands. Today, one in five are already classified as safety-relevant, and this figure is likely to rise still further in the future. In the meantime, the definition of “safety” goes beyond simply ruling out potential hazards to people, the environment, the plant and the product. It is linked more and more to a desire to make processes more efficient.

For this reason, condition monitoring covers all safety-relevant components of a process, in other words it includes the measuring instruments. The sensors used for this purpose monitor themselves continuously, diagnose proper functioning and communicate with the plant’s control system. Individual, demand-driven interventions can then take the place of manual checks based on a defined maintenance plan. Plant availability and product quality are improved in this way, even though fewer people are involved.