Not the same: temperature range and temperature limit

Temperature range and temperature limit for pressure sensors ? is there a difference? My intuitive answer would be: Yes! Abuse describes a section and the second its border. On second glance, however, I must conclude that both words ultimately express a similar thing in relation to temperatures: Range and limit are defined by way of a lower and upper value, for example 0 ? 100 �C. The relevant standard nevertheless defines a difference. Why?
IEC 61987 speaks of two different specification characteristics
The standard described is IEC 61987. This deals, among other activities, with the properties of fluid sensors, which likewise incorporate pressure sensors. With ?range? and ?limit?, the standard designates two different specification characteristics. Accordingly, the temperature range describes the span in which the instrument specifications must apply ? first and foremost, the accuracy. The temperature limit, alternatively, indicates the min/max values between that your instrument could be operated without damage. With this, the instrument specifications do not have to be honored at all.
What may sound a little pedantic, makes sense from a technical perspective. This can be illustrated by the following exemplory case of a pressure sensor: The instrument is supposed to deliver solid measured values at an ambient temperature selection of 0 ? 100 �C. Concurrently, the sensor must not suffer any damage at ambient temperatures between -20 �C and 0 �C. In this range, however, it generally does not need to provide accurate measuring results, and even measure.
The difference between temperature range and temperature limit is plausible
This sounds paradoxical at first, but is plausible on closer inspection. Pressure sensor elements, i.e. the actual measuring components, exhibit a comparatively large, often non-linear temperature error. Without further measures, a reliable pressure measurement would be impossible. Therefore, the maker has to compensate for the temperature to be able to bring the error right down to an acceptable level. From an economic perspective, the limitation to a selected temperature range is practical, or is even absolutely necessary.
The distinction between temperature range and temperature limit pertains to both ambient temperature and the medium temperature. It is also useful for other specification characteristics, for example overpressure.
Conclusion
Yes, you will find a difference between range and limit in the normative world of pressure sensor technology. And yes, it creates technical sense. However, I doubt if the normal user, without understanding of standards, understands it intuitively. Which inevitably leads to the question of whether you will find a better linguistic distinction. But, I must admit, the answer is outside my ?range?.
Note
More info on our pressure sensors can be found on the WIKA website. Do you wish to buy pressure sensors? You will find a few of our standard designs inside our WIKA online-shop. Assuming you have any questions, your contact will gladly help you.
Also read our posts
What does temperature compensation or compensated temperature range for pressure sensors mean?
Active and passive temperature compensation of pressure sensors
Temperature coefficients (TC) of pressure sensors

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