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