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Product name Ultra high purity pressure gauge with transmitter
Model PT840 series

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Ultra high purity pressure gauge with transmitter
Model : PT840 Catalogue Download : 
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°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

Mechanical
Pressure connection
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
Pressure element
316L SS
<6 MPa : C-type bourdon tube
≥6 MPa : Helical type bourdon tube
Case
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 10-9 mbar • ℓ/sec
Electrical
Connection
26 AWG, Teflon insulated
10 feet leads (2 black wires)
Power
DC 24 V
Out put
4 ~ 20 mA, 2 wire system