1.3 Working Mechanism
NO
1
2
3
4
1) When a pressure is imposed both on the high side water pressure part and the low side water
pressure part, the bellows will be shrunk by the sum of 2 differential pressures.
Then, the rod connected to the bellows will move horizontally and the apparatus connected to
the differential gauge indication part will rotate the caliber by the amount of displacement to
indicate the differential pressure value.
2) A bellows has a low side and a high side to create a certain displacement in combination with
the spring according to the differential pressure range.
3) Three kinds of bellows are working whose thickness and appearance are differentiated by their
differential pressure range. (0.11t, 0.15t, and 0.25t)
4) A spring is a device to create a certain differential pressure according to the differential pressure
range and it has 12 kinds.
Name
Rod
Bellows
Housing
Spring
Remark
Function
Transmit the bellows displacement to the differential pressure indication
part.
Separate the high side from the low side and make the displacement
according to the water differential pressure.
Protect the main water pressure part, providing it with a resistance
force.
Create a certain displacement according to the differential pressure
range.
Rod
Bellows
Spring
Housing
High Side Water
Pressure Part
Low Side Water
Pressure Part
