Temperature range and temperature limit for pressure sensors ? is there an improvement? My intuitive answer will be: Yes! The initial term describes a section and the second its border. On second glance, however, I must conclude that both words ultimately express the same thing in relation to temperatures: Range and limit are defined by 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 referred to is IEC 61987. This deals, among other things, 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 where 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 don’t need to be adhered to at all.
What may sound a little pedantic, makes sense from a technical point of view. This could be illustrated by the following exemplory case of a pressure sensor: The instrument is meant to provide solid measured values at an ambient temperature selection of 0 ? 100 �C. Simultaneously, the sensor should never suffer any damage at ambient temperatures between -20 �C and 0 �C. In Insane , however, it generally does not need to provide accurate measuring results, as well as 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 relatively large, often non-linear temperature error. Without further measures, a reliable pressure measurement would be impossible. Therefore, the maker must 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. Additionally it is useful for other specification characteristics, for instance overpressure.
Conclusion
Yes, you will find a difference between range and limit in the normative world of pressure sensor technology. And yes, it makes technical sense. However, I doubt if the normal user, without knowledge of standards, understands it intuitively. Which inevitably leads to the question of whether there exists a better linguistic distinction. But, I must admit, the answer is outside my ?range?.
Note
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