What is an absolute pressure gauge with a diaphragm?

What is an absolute pressure gauge with a diaphragm?

Basically, an absolute pressure gauge with a diaphragm in this type of gauge is used to measure pressure, independent of any changes in ambient pressure. The pressure chamber shall be isolated by a thin diaphragm. A chamber that will not be loaded to gauge pressure, will be evacuated to absolute vacuum. This vacuum (= absolute zero-point) is called the reference pressure. The diaphragm will be loaded with measuring pressure and will flexibly deviate from its normal position, thus transmitting the pressure through the bellows upon movement. Absolute pressure gauges are used for measuring gases and liquids; It can be aggressive too. The accuracy is ± 1,6% of full scale deflection.
Basically, an absolute pressure gauge with a diaphragm in this type of gauge is used to measure pressure, independent of any changes in ambient pressure. The pressure chamber shall be isolated by a thin diaphragm. A chamber that will not be loaded to gauge pressure, will be evacuated to absolute vacuum. This vacuum (= absolute zero-point) is called the reference pressure. The diaphragm will be loaded with measuring pressure and will flexibly deviate from its normal position, thus transmitting the pressure through the bellows upon movement. Absolute pressure gauges are used for measuring gases and liquids; It can be aggressive too. The accuracy is ± 1,6% of full scale deflection.

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