Accuracy depends on Precision and Long-term Stability

The accuracy of measuring technology includes precision and long stability. Accuracy essentially refers to the repeatability of measuring results at the same conditions. Therefore, an accurate measuring instrument displays the same value in each measuring, the value can be either correct or incorrect. Only when the value is correct, the instrument is accurate.

Various external factors have a significant impact on the measured values, and the temperature is the main factor affecting measuring accuracy and also the main factor of uncertainty in actual pressure measuring. Medium temperature and environmental temperature can have significant impact on measured values. The measurement deviation of pressure transmitters caused by temperature can be classified as excursion effect and hysteresis effect. Due to aging, material fatigue, and wearing, the longer the pressure transmitter is used, the greater the measurement deviation. 

The accuracy and long-term stability of the transmitter depend on the application conditions and the technology of sensors used, as well as overall design and process quality. For high-quality and expensive machines and systems, the accuracy and long-term stability of pressure transmitters must be particularly high. Operation interruptions and failures can lead to high costs. Therefore, it is necessary to choose a pressure transmitter that can ensure stable output accuracy in the coming years.

In industrial applications, the precision and excellent long-term stability of measurement signals are essential, TMIINST pressure transmitters use high-performance thin-film-on-steel chips and low-power high-precision signal conditioning chips, which can always work perfectly even under the worst conditions such as case of high-loads.

Do you have any questions about precision and long-term stability?

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