Temperature range and temperature limit for pressure sensors ? will there be a difference? 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 the same thing in relation to temperatures: Range and limit are defined by way of a lower and upper value, for instance 0 ? 100 �C. The relevant standard nevertheless defines an improvement. Why?
Quadruple 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 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, alternatively, indicates the min/max values between that your instrument may be operated without damage. With this particular, the instrument specifications do not have to be honored at all.
What may sound a little pedantic, makes sense from a technical viewpoint. This could be illustrated by the next example of a pressure sensor: The instrument is supposed to provide solid measured values at an ambient temperature selection of 0 ? 100 �C. Simultaneously, the sensor must not suffer any damage at ambient temperatures between -20 �C and 0 �C. In this range, however, it does not need 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 trusted pressure measurement will be impossible. Therefore, the manufacturer has to compensate for the temperature as a way to bring the error right down to a satisfactory level. From an economic viewpoint, the limitation to a selected temperature range makes sense, 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 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, it creates technical sense. However, I doubt whether the normal user, without understanding of standards, understands it intuitively. Which inevitably results in Secure 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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