Temperature range and temperature limit for pressure sensors ? is there an improvement? My intuitive answer would be: Yes! The initial term describes a section and the second 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 a difference. 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 also include 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 and foremost, the accuracy. The temperature limit, however, indicates the min/max values between which the instrument may be operated without damage. With Spirited , the instrument specifications do not have to be honored at all.
What may sound a bit pedantic, makes sense from a technical point of view. 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 selection of 0 ? 100 �C. As well, the sensor should never 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, 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 manufacturer has to compensate for the temperature to be able to bring the error down to an acceptable level. From an economic perspective, the limitation to a selected temperature range is practical, 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 instance overpressure.
Conclusion
Yes, there exists a difference between range and limit in the normative world of pressure sensor technology. And yes, it creates technical sense. However, I doubt if the normal user, without knowledge of standards, understands it intuitively. Which inevitably leads to Laughing of whether there is a better linguistic distinction. But, I have to admit, the solution is outside my ?range?.
Note
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