Selection issues for micro-pressure gauges
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Dear seniors, there is a tank with a design pressure of 2 kPa. The substances stored in this tank are methanol, ethanol, propanol, and other flammable and explosive materials. An on-site pressure gauge is needed; what type of pressure gauge would be suitable for this purpose? The pressure gauge specification states: Diaphragm pressure gauges are suitable for use in environments without explosion hazards ； Diaphragm pressure gauges don’t have such a small range.
You can choose a full stainless steel diaphragm pressure gauge, or opt for safety glass.
Diaphragm boxes and diaphragm pressure gauges are not the same type of instrument; a diaphragm box refers to an elastic element in the gauge’s dial that is in the form of a diaphragm, while a diaphragm pressure gauge means that the part that comes into contact with the process medium is a diaphragm. Diaphragm boxes can be used for measuring very low pressures, but diaphragms are likely not suitable for such purposes.
Agreed; a diaphragm with a pressure rating of 2 kPa won’t work