Temperature range and temperature limit for pressure sensors ? is there a difference? My intuitive answer would be: Yes! The first term describes a section and the next 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 a lower and upper value, for instance 0 ? 100 �C. The relevant standard nevertheless defines an improvement. 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 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 that your instrument may be operated without damage. With this particular, the instrument specifications don’t need to be honored at all.
What may sound a little pedantic, makes sense from a technical viewpoint. This could be illustrated by the following exemplory case of a pressure sensor: The instrument is meant to deliver solid measured values at an ambient temperature range of 0 ? 100 �C. As well, 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, as well as 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 relatively large, often non-linear temperature error. Without further measures, a trusted pressure measurement would be impossible. Therefore, the manufacturer has to compensate for the temperature so that you can bring the error right 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 applies to both ambient temperature and the medium temperature. Additionally it is useful for other specification characteristics, for instance overpressure.
Conclusion
Yes, there exists a difference between range and limit in the normative world of pressure sensor technology. And yes, it makes technical sense. However, I doubt whether the normal user, without knowledge of standards, understands it intuitively. Which inevitably results in Emergency of whether there is a better linguistic distinction. But, I have to admit, the answer is outside my ?range?.
Note
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