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 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 an improvement. Why?
IEC 61987 speaks of two different specification characteristics
The standard referred to is IEC 61987. This deals, among other activities, 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 in which the instrument specifications must apply ? first of all, the accuracy. The temperature limit, however, indicates the min/max values between which the instrument may 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 perspective. This could be illustrated by the following example of a pressure sensor: The instrument is supposed to deliver solid measured values at an ambient temperature selection of 0 ? 100 �C. As well, the sensor should never suffer any damage at ambient temperatures between -20 �C and 0 �C. In Unsurpassed , however, it does not have to provide accurate measuring results, and 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 comparatively large, often non-linear temperature error. Without further measures, a trusted pressure measurement would be impossible. Therefore, the maker must compensate for the temperature so that you can bring the error down to a satisfactory 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 applies to both ambient temperature and the medium temperature. It is also used for other specification characteristics, for example 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 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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