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Sensors & Instrumentation Live

NEC Birmingham(B40 1NT)

25/09/2019 - 26/09/2019

Sensors & Instrumentation Live will celebrate its 10 year anniversary in 2019 and the UK’s (more)

PPMA Show 2019

NEC, Birmingham(B40 1NT)

01/10/2019 - 03/10/2019

The UK’s largest ever event in the processing and packaging sector calendar. With over 350 exhibitors (more)

Advanced Engineering 2019

NEC, Birmingham(B40 1NT)

30/10/2019 - 31/10/2019

The UK's largest annual advanced manufacturing trade show, Advanced Engineering is your opportunity to (more)

Selecting the right temperature sensor

Selecting the right temperature sensor There's no simple solution to achieving accurate temperature measurement. It's a combination of knowing the inherent accuracy of particular sensor types, but also how environmental factors can create further measurement uncertainty and the sensor calibration techniques available to reduce this uncertainty. A basic awareness of the inherent accuracy of particular sensor types is important, but goes only a short way toward the goal of achieving optimally accurate temperature measurement. It is the broader knowledge of how sensor choice, sensor placement and a wide variety of environmental factors can contribute to sensor error, as well as having a familiarity with calibration techniques that can be used to reduce this uncertainty, that ultimately leads to optimum sensor selection and measurement accuracy. It is nearly impossible to sense temperature exactly where you need it. At the very least, the sensor itself has a finite size that displaces the sensing element from its attachment, resulting in the sensor being at a different location than the desired measurement location. If surrounding heat sources and sinks are known, location errors can be compensated for. However, this can be difficult in many systems and will result in location errors resisting calibration. The simplest solution, which avoids complex calibration techniques, is to utilise a small sensor and place it as close to the temperature source as possible.
 

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