High purity pressure gauge (BA grade)_P830 series (316L type)
Service intended
P830 series are specially designed for the high purity gas distribution system used in a semiconductor, electronic, medical, biotechnology and pharmaceutical industry.
Nominal diameter
35 (1½"), 50 (2") and 63 mm (2½")
Accuracy
Grade A : 50 (2") and 63 mm (2½") Grade B : 35 (1½"), 50 (2") and 63 mm (2½")
Scale range
-0.1 ~ 0 to 0 ~ 28 MPa
Working pressure
Steady pressure : 75 % of full scale value Fluctuating pressure : 67 % of full scale value
Working temperature
Ambient : -40 ~ 65 °C Fluid : Max. 100 °C
Temperature effect
Accuracy at temperature above and below the reference temperature (20 ℃) will be effected by approximately ±0.4 % per 10 ℃ of full scale
Standard features
Pressure connection
Type 316L SS low mount or center back mount BA grade of surface finish ■ ¼" NPT male thread ■ VCR® male or female face seal fitting
Element
Type 316L SS <6 MPa : C-type bourdon tube ≥6 MPa : Helical type bourdon tube
Case
Type 304SS, Electropolished with pressure relief
Cover and window
Twist-lock polycarbonate
Movement
Stainless steel
Dial
White aluminium with pointer stop pin With black/red lettering, Dual pressure scale (bar/psi)
Pointer
Black painted aluminium alloy
Helium leak rate
Tested to confirm leakage rates of less than 10 mbar • ℓ/sec