Problems with the pressure gauge
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The **standards for current pressure gauges are mainly GB/T1226 and GB/T1227, but their measurement ranges are quite large. Are there any standards specifically for kilopascal gauges? Gauges with a pressure of 10 KPa are also used quite frequently. Also, what type of pressure gauge is generally used in the natural gas industry? Is there any specification for this? I would appreciate your advice!
Of course, you can just use a diaphragm pressure gauge. Diaphragm gauge can measure in the KPa range. I haven’t checked, but what you might be looking at is a Bourdon tube pressure gauge; it’s difficult to reduce the range of such gauges.
In which standard are the classifications of pressure gauges specified? For example, what is the classification for spring tube type pressure gauges like the one you mentioned? GB/T1226 for general pressure gauges and GB/T1227 for precision pressure gauges.