The difference between bellows pressure gauge and the general pressure gauge

The structure and principles of bellows pressure gauge is: instrument by measuring system ( Including joints, corrugated box, etc. ) , transmission mechanism, Including the pull rod, gear transmission mechanism) Indicating that the parts ( Including the pointer and dial) And the shell ( Including the watch case, glass lining and table) . The operation principle of the instrument is based on the corrugated bellows under pressure measured medium, its free end produce elastic deformation, then through and to amplify the transmission gear transmission mechanism, the fixed on the shaft of the pointer will be measured by value on the dial indicator. And zero device, can easily adjust the zero. It is mainly applied to boiler ventilating, gas pipeline, burning device and other similar devices. Ordinary pressure gauge principle: by sensitive element - in the table - Bourdon tube elastic deformation, and then through the transformation mechanism of movement in table will pressure deformation to a pointer, pointer rotation to display the pressure. General pressure gauges for measuring no explosion, crystallize, solidify, for copper and copper alloy non-corrosive effect of the liquid, gas or steam pressure and vacuum. Ordinary belong to on-site instruction type pressure gauge pressure gauges, the size of the local display pressure, without a remote display, regulating function.