Capsule gauge use the diaphragm capsule as the sensing element for pressure measurement. The diaphragm capsule is an elastic metal sensing element comprised of two thin wall diaphragms whose sides are soldered together to the capsule.Whenever air, gas enters the intake port(gauge connection),it travels into the diaphragm capsule. The walls of the capsule expand and contract in response to the change in pressure.This change is then transferred to a rotating rod and arm that rest on the outside of the capsule.The rotating rod is connected to a geared movement through a linkage system.Connected to a shaft, this system then drives the pointer over a dial marked in appropriate pressure or vacuum units to provide a pressure reading.

Instruments Diameter:70mm,100mm,160mm

Accuracy Class:2.5%(1.6% optional)

Range:0.25kPa-100kPa

Protection Class:IP 54

Dial:Aluminum,white with black scales(special dial available)