EdgeTech PPM1 Trace Moisture Analyzer

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.

Applications
Electric Power (Transformer Gas)
Common Process Gases (Semiconductor Industry)
Pharmaceutical Industry (Medical Gas)
Gas Supplier Industry (Quality Control)

Features

• 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