Temperature range and temperature limit for pressure sensors ? is there an improvement? My intuitive answer will 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 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 standard 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 could be operated without damage. With this particular, the instrument specifications do not have to be adhered to 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 supposed to provide solid measured values at an ambient temperature range of 0 ? ไดอะแฟรม �C. Simultaneously, the sensor must not suffer any damage at ambient temperatures between -20 �C and 0 �C. In ไดอะแฟรม ซีล , 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 actual measuring components, exhibit a relatively large, often non-linear temperature error. Without further measures, a trusted pressure measurement will be impossible. Therefore, the maker has to compensate for the temperature in order to bring the error down to an acceptable level. From an economic viewpoint, the limitation to a selected temperature range makes sense, or is even essential.
The distinction between temperature range and temperature limit pertains to both ambient temperature and the medium temperature. Additionally it is used 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, pressure gauge makes technical sense. However, I doubt if the normal user, without understanding of standards, understands it intuitively. Which inevitably results in the question of whether you will find a better linguistic distinction. But, I must admit, the solution is outside my ?range?.
Note
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