I have a question about the pressure-sensing elements in pressure gauges

The Bourdon tube as well. Break the pressure gauge, smash it open to take a look at its insides – the waste matter inside, all of it will be remembered forever~~~~~~ {:3_55:} . .

The isolation diaphragm isn’t used for measuring pressure; its function is to isolate and transfer pressure in equal amounts. It’s like your underwear – it’s not meant for urinating, but rather to provide privacy for your genitals...... {:3_51:}

\ud83d\ude2c

Judging from the sample, a diaphragm pressure gauge operates by compressing the diaphragm, which in turn uses mechanical force to move the pointer

Now the reply content no longer has any wealth value.

That’s right. The measuring element of a diaphragm pressure gauge can be a Bourdon tube. Actually, there is a bit of confusion here: a diaphragm pressure gauge originally refers to a pressure gauge that uses a diaphragm (or diaphragm box) as its measuring element. Through the displacement of the diaphragm, the pointer is rotated via a transmission mechanism to provide indication. A diaphragm pressure gauge uses a diaphragm to isolate the medium, and transmits pressure to a conventional pressure gauge through a pressure-transmitting fluid. Now that membrane pressure gauges in their traditional form are hardly produced any more, there is little attention paid to their naming. There’s no need to overthink it; it’s enough to know that there are these two types, but most people nowadays are referring to just one of them. The diagram below shows a diaphragm (diaphragm box) that is used in pressure gauges; however, its specific name is “height gauge”.

Diaphragm types are usually used in applications where clogging is a concern and high corrosion resistance is required; ordinary spring tube types are used for regular liquids and gases. The choice is primarily based on the properties of the medium. Only suitable, nothing is perfect.