EdgeTech PPM1 Trace Moisture Analyzer
Starting at $4,125.00

Not in stock. Usually ships in 3-5 weeks [?]

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  • 1250 to 0.1 PPMv trace moisture
    • ±5% of PPM reading, nominal accuracy
  • -4 to -139°F (-20 to -95°C) dew/frost point
  • 0 to 200 psig regulated sample pressure
  • 18 to 30VDC power requirements
  • Response time of 90% of step change, in 1min, typically
  • No hysteresis
  • Two 4 to 20mA analog outputs, scalable by user
  • Two dry alarm relays, FORM A, adjustable by user
  • RS-232 serial, bi-directional digital output

The EdgeTech PPM1 trace moisture analyzer is designed specifically for monitoring moisture levels in dew point and PPM units. EdgeTech moisture analyzers utilize a Phosphorous Pentoxide electrochemical sensor (P205) in combination with a proprietary semi-permeable diffusion membrane.

The principle of operation applies the Faraday's Law of Electrolysis which measures the dissociation current making it a fundamental measurement of the moisture present. The EdgeTech PPM1 is ideally used in relatively clean, dry, inert gas applications.

The EdgeTech PPM1 features a 2 line display to show both PPM and dew point, 2 analog outputs, RS232 communications, and 2 alarm relays. The unit is housed in an IP65 enclosure and includes a 316SS flow through sample chamber with 1/4in compression fittings and 6 feet of sensor cable.


  • Electric Power (Transformer Gas)
  • Common Process Gases (Semiconductor Industry)
  • Pharmaceutical Industry (Medical Gas)
  • Gas Supplier Industry (Quality Control)
Edgetech Trace Moisture Sensor
Sensor, complete with sample chamber, for the Edgetech PPM1 trace moisture analyzer