The P840 Series specifically designed for ultra high purity gas distribution system used in semiconductor industry and electronic, medical, biotechnology, pharmaceutical industry.

Service intended
P840 series are specially designed for the ultra-high purity gas distribution system used in a semiconductor, electronic, medical, biotechnology and pharmaceutical industry.
Nominal diameter
50 mm(2")
Switch point accuracy
±2.0% of full scale
Scale range
0 ~ 28 MPa
Working pressure
  • Ambient : -40 ~ 65°C
  • 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
Pressure connection
Type 316L stainless steel electropolished
low mount or center back mount
surface finish Ra≤0.25 ㎛
¼" NPT male thread
VCRⓡ male or female face seal fitting
316L SS
<6 MPa : C-type bourdon tube
≥6 MPa : Helical type bourdon tube
Type 304SS,
Electropolished with pressure relief
Cover and Window
Twist-lock polycarbonate
Stainless steel
White PVC, with pointer stop pin
With black/red lettering, dual pressure scale (bar)
Black painted aluminium alloy
Helium leak rate
Tested to confirm leakage rates of less than
10-9 mbar • ℓ/sec
10 feet (3 m) leads (2 black wires)
Maximum switching current
0.5 amps AC/DC noninductive load
Maximum power
10 W/DC, 12 VA/AC
Maximum switching voltage
28 V AC/DC

File download:

Related Projects: