4. Operating Principle
②
①
③
④
1) If pressure comes in the pressure transducing part of high pressure side and the pressure
transducing part of low pressure side, ① bellows will shrink by differential pressure between
two points. Then, ②ROD connected to the bellows moves in the right and left direction.
And ③SHAFT and ④POST, which is connected to the indicating part of differential
pressure gauge, rotates by this moving distance, and indicates differential pressure.
2) In case of bellows, high pressure side and low pressure side is made to be separated.
And a uniform moving distance is made to occur by combination with spring according
to the differential pressure range.
LOW
PRESSURE
HIGH
PRESSURE
LOW
PRESSURE
HIGH
PRESSURE
