: Diaphragm

Service intended

PT840 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")
Gauge accuracy	±1.0 % of full scale
Transmitter accuracy	±0.25 % of full scale
Scale range	Refer to range code
Working pressure	Steady pressure : 75 % of full scale value Fluctuating pressure : 67 % of full scale value
Working temperature	Ambient : -40 ~ 65
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
Movement	Stainless steel
Dial	White PVC with pointer stop pin With black/red lettering, dual pressure scale (bar/psi)
Pointer	Black painted aluminium alloy
Ring and window	Twist-lock polycarbonate
Helium leak rate	Tested to confirm leakage rates of less than 10 mbar • ℓ/sec

Standard features

Electrical

Connection	26 AWG, Teflon insulated 10 feet leads (2 black wires)
Power	DC 24 V
Out put	4 ~ 20 mA, 2 wire system

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PT840 Series_Ultra high purity pressure gauge with transmitter

PT840 Series

Attached files

Diaphragm

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Attached files

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