Diaphragm pressure gauge with dry type

Model: P771, P772

 

Service intended

 

P770 series are equipped with the specially designed dry type diaphragm. This special diaphragm offers a unique capability to use with all types of liquids, high-viscosity fluids, solids, and even corrosive chemicals. P770 is a perfect solution for a wide range of process industry such as Petro-chemical, environmental technology, offshore, mechanical engineering, power stations, and plant construction.

 

Nominal diameter

 

100 and 160 mm

 

Accuracy

 

±1.6% of full scale

 

Scale range

 

0 ~ 1 kPa to 0 ~ 40 kPa (Flange 150 mm)
0 ~ 50 kPa to 0 ~ 2.5 MPa (Flange 100 mm)

 

Working pressure

 

Steady : Full scale value
Fluctuating : 90 % of full scale value

 

Over range protection

 

Overpressure safety 130 % of full scale value
Overpressure safety 500 % of full scale value, Max. 5 MPa (Option)
Opton : Overpressure safety 500 % of full scale value, Max. 5 MPa

 

Working temperature

 

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

 

Temperature effect

 

Accuracy at temperature above and below the reference temperature (20 ℃) will be effected by approximately
±0.8 % per 10 ℃ of full scale

 

 

Standard features

 

Upper flange (Gauge side)

 

Material : Stainless steel (304SS, 316SS)

 

Diaphragm material

 

≤ 40 kPa : Stainless steel (316Ti SS)
> 40 kPa : Duratherm 600

 

Pressure connection and under flange

 

Material : Stainless steel
(316SS, 316L SS, 304SS, 304L SS) and others
Lower screw and flange mount

 

Case

 

Stainless steel (304SS)

 

Cover

 

Stainless steel (304SS) Bayonet type

 

Window

 

Safety glass

 

Movement

 

Stainless steel

 

Dial

 

White aluminium with black graduations

 

Pointer

 

Black painted aluminium alloy

 

Option

 

External zero adjustable

 

Certificates

 

ATEX Ex II GD c IIC TX

 

 

Download:  CATALOG 

Đồng hồ áp suất màng áp thấp P771 P772