Temperature range and temperature limit for pressure sensors ? is there a difference? My intuitive answer will 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 with regards 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 a difference. 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 standard 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, on the other hand, indicates the min/max values between that your instrument may be operated without damage. With this, the instrument specifications do not have to be adhered to at all.
What may sound a little pedantic, makes sense from a technical perspective. This can be illustrated by the following example of a pressure sensor: The instrument is meant to provide solid measured values at an ambient temperature selection of 0 ? 100 �C. At the same time, the sensor must not suffer any damage at ambient temperatures between -20 �C and 0 �C. In this range, however, it does not have to provide accurate measuring results, as well as measure.
The difference between temperature range and temperature limit is plausible
This sounds paradoxical at first, 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 reliable pressure measurement will be impossible. Therefore, the maker has to compensate for the temperature so as to bring the error down to an acceptable level. From an economic point of view, 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. 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, เกจวัดแรงดันลมราคา 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 must admit, the solution is outside my ?range?.
Note
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