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Type: P330, P335


Service intended


P256 series are made with a solid plate wall and a blow-out back. Its stainless steel case and cover have a good appearance. It has the excellent proof against corrosion and chemical attack. Suitable for protection against damage to the measuring element when high overpressure is applied to the gauge instantaneously. Max overpressure is up to 4 times of measuring range.


Nominal diameter


100 and 160 mm




±1.0 % of measuring range


Scale range (MPa, kPa, bar)


-0.1 ~ 0 to 0 ~ 4 MPa


Working pressure


Steady : 100 % of full scale
Over range protection : 4 times the measuring range


Working temperature


Ambient : -40 ~ 65 ℃
               -20 ~ 65 ℃ (With glycerin filling)
               -40 ~ 65 ℃ (With silicone filling)
Fluid : Max. 200 ℃
          Max. 100 °C (With glycerin filling)
          Max. 100 ℃ (With silicone filling)


Degree of protection




Temperature effect


Accuracy at temperature above and below the reference temperature (20 ℃) will be effected by approximately
±0.4 % per 10 ℃ of full scale
* NOTE : P256 series is not applied with diaphragm seal.



Standard features


Pressure connection


Stainless steel (316SS)




Stainless steel (316SS)




Stainless steel (304SS)




Stainless steel (304SS) Bayonet type


Blowout protection


Solid front Blow-out back




Laminated safety glass




Stainless steel




White aluminium with black graduations overpressure range indicated by a black sector




Black painted aluminium alloy


Process connection


½", ⅜" PT, NPT and PF




Zero adjustable pointer
Pressure connection and element : Monel
Case and cover material : 316SS


Đồng hồ áp suất P330 P335

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