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Differential pressure gauge with bellows element

Type: P670


Service intended


P670 differential pressure gauge series are designed to measure differential pressure from 4 kPa to 2.0 MPa at static pressure of 4 and 10 MPa. A set of two stainless steel bellows mounted on a force balance allows direct reading of the actual differential pressure.


Nominal diameter


100 and 160 mm




±1.0 % of full scale
±1.6 % of full scale


Scale range (MPa, kPa, bar)


0 ~ 4 kPa, 6 kPa, 10 kPa (P671 model)
0 ~ 25 kPa to 0 ~ 0.25 MPa (P672 model)
0 ~ 0.4 MPa to 0 ~ 2.0 MPa (P673 model)


Static pressure


P671 : Max. 4 MPa
P672 and P673 : Max. 10 MPa


Working temperature


Ambient : -20 ~ 65 °C
Fluid : Max. 100 °C


Degree of protection




Temperature effect


Accuracy at temperature above and below the reference temperature (20 ℃) will be effected by approximately
±0.5 % per 10 ℃ of full scale



Standard features


Pressure connection


Stainless steel (316L SS), Monel and Hastelloy-C




Stainless steel (316L SS), Monel and Hastelloy-C


Case and cover


Stainless steel (304SS)




Safety glass




White aluminium with black graduations


Filling liquid for differential cell


Silicone oil




Black painted aluminium alloy (Zero adjustable)


Process connection


¼" NPT(F)
½" NPT(F) at 3-way and 5-way manifold valve


Standard accessories


Mounting bracket for 2" pipe
mounting with silver gray finished steel




■ Remote seal - Not available with less than 40 kPa of differential pressure range
■ Mounting bracket with 316SS for 2" pipe
■ 3-way and 5-way manifold valve
■ 3-way and 5-way manifold valve (Monel)
■ Accuracy ±0.5 % of full scale



Download:  CATALOG 

Đồng hồ áp suất chênh áp P671, P672, P673

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