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Ultra high purity pressure switch (316L type)

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Ultra high purity pressure switch (316L type)

Ultra high purity pressure switch (316L type)

Details

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 Steady pressure : 75 % of full scale value
Fluctuating pressure : 67 % of full scale value
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
±0.4 % per 10 ℃ of full scale

Standard features

Mechanical

Pressure connection Type 316L SS electropolished low mount or center back mount
surface finish Ra≤0.25 ㎛
■ 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
Pointer Black painted aluminium alloy
Dial White PVC, with pointer stop pin
With black/red lettering, dual pressure scale (bar)
Helium leak rate Tested to confirm leakage rates of less than
10 -9 mbar • ℓ/sec

 

Standard features

Electrical

Connection 26 AWG, PVC
6 feet (2 m)
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
 

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