top of page

Differential pressure gauge with diaphragm element

Type: P660


Service intended


P660 gauge series are differential pressure gauge is designed to measure differential pressure from 4 kPa to 2.5 MPa at static pressure of 10, 25 MPa. A set of two stainless steel diaphragm 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, mbar)


0 ~ 4 kPa to 0 ~ 40 kPa
Flange size / DN 140, Max. static / 10 and 25 MPa
0 ~ 60 kPa to 0 ~ 2.5 MPa
Flange size / DN80, Max. static / 25 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 (Flange)


Stainless steel (316L SS)




316 Ti : Flange size / DN140 (Low side and high side)
316L SS : Flange size / DN80 (Low side )
               / Duratherm 600 (High side)


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)



Download:  CATALOG 

Đồng hồ áp suất chênh áp P661 P662

    bottom of page