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 next 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 way of a lower and upper value, for example 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 also include pressure sensors. With ?range? and ?limit?, the standard designates two different specification characteristics. Accordingly, เพรสเชอร์เกจ 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 could be operated without damage. With digital pressure gauge , the instrument specifications do not have to be adhered to at all.
What may sound a little pedantic, makes perfect sense from a technical viewpoint. This could be illustrated by the following example of a pressure sensor: The instrument is meant to deliver solid measured values at an ambient temperature selection of 0 ? 100 �C. At the same time, 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, as well as 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 relatively large, often non-linear temperature error. Without further measures, a trusted pressure measurement would be impossible. Therefore, the maker must compensate for the temperature as a way to bring the error down to a satisfactory level. From an economic point of view, 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 useful 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, it makes technical sense. However, I doubt if the normal user, without knowledge of standards, understands it intuitively. Which inevitably leads to the question of whether you will find a better linguistic distinction. But, I have to admit, the solution is outside my ?range?.
Note
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