Temperature range and temperature limit for pressure sensors ? is there an improvement? My intuitive answer would be: Yes! The first term describes a section and the next its border. On second glance, however, I have to conclude that both words ultimately express a similar 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 an improvement. Why?
IEC 61987 speaks of two different specification characteristics
The standard described is IEC 61987. This deals, among other things, with the properties of fluid sensors, which likewise incorporate pressure sensors. With ?range? and ?limit?, the typical designates two different specification characteristics. Accordingly, the temperature range describes the span where the instrument specifications must apply ? first of all, the accuracy. The temperature limit, on the other hand, indicates the min/max values between which the instrument may be operated without damage. With this, the instrument specifications don’t need to be honored at all.
What may sound a bit pedantic, makes perfect sense from a technical viewpoint. This is often illustrated by the next example of a pressure sensor: The instrument is meant to deliver solid measured values at an ambient temperature selection of 0 ? 100 �C. At the same time, the sensor should never suffer any damage at ambient temperatures between -20 �C and 0 �C. In this range, however, it does not have to provide accurate measuring results, or even measure.
The difference between temperature range and temperature limit is plausible
This sounds paradoxical initially, but is plausible on closer inspection. Pressure sensor elements, i.e. the specific measuring components, exhibit a comparatively large, often non-linear temperature error. Without further measures, a reliable pressure measurement would be impossible. Therefore, the maker must compensate for the temperature so as to bring the error down to a satisfactory level. From an economic point of view, the limitation to a selected temperature range makes sense, or is even essential.
The distinction between temperature range and temperature limit pertains to both the ambient temperature and the medium temperature. It is also used for other specification characteristics, for instance overpressure.
Conclusion
Yes, there is a difference between range and limit in the normative world of pressure sensor technology. And yes, Kickstart makes technical sense. However, I doubt if the normal user, without knowledge of standards, understands it intuitively. Which inevitably results in the question of whether you will find a better linguistic distinction. But, I have to admit, the answer is outside my ?range?.
Note
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