Page 1
ISO/IEC 17025:2005 Accredited
ISO 9001:2008 Registered
The Edgetech Instruments PPM1 is a trace moisture
analyzer for monitoring dew/frost point and
ppmV water vapor in gases.
The PPM1 delivers the Edgetech Instruments Advantage:
an ideal system tailored to your application needs. It is a
modular, remotely mounted hygrometer with an electrolytic
sensor configured to meet your moisture measurement
application requirements.
The PPM1 uses an electrolytic, phosphorus pentoxide sensor
in combination with a proprietary semi permeable diffusion
membrane. The principle of operation applies Faraday’s Law
of Electrolysis to determine the water vapor content by
measuring the dissociation current needed to electrolyze the
water molecules in the sample.
The PPM1 is packaged in an IP66/67, NEMA 4 plastic
enclosure and comes complete with two FORM A relay
al a r ms, t wo analog current outputs a n d a RS -232
bi-directional serial interface.
All Edgetech Instruments hygrometers are manufactured and
supported in the USA in a modern, ISO 9001:2008 registered,
ISO/IEC 17025:2005 accredited facility. All calibrations and
certifications are traceable to NIST.
Features:
• Precise, trace moisture measurement
• Range: 0.1 to 1250 ppmV
• NIST traceability calibration certificate
• Primary method measurement principle
• Compact, low cost solution
• Remote sensor can be installed at process take-off point
• Standard sample ports are 1/4 inch compression fittings
• Optional VCR sample ports
• May be configured for flow-thru or diffusion sampling
Low Cost, Trace Moisture Analyzer
Applications:
• Air separation and cylinder transfill
• Glove box/isolation chamber
• Semiconductor fabrication
• Pharmaceutical storage
• Pharmaceutical processes
• Inert gas purity
• MAP systems
• Power and energy systems
The PPM1 Trace Moisture Analyzer
Click here for the PPM1 Application note
Page 2
Toll Free: 800-279-3729 Ph: 508-263-5900 Fax: 508-486-9348
E-mail: [email protected]
Web: www.edgetechinstruments.com
Technical Specifications
ISO/IEC 17025:2005 Accredited
ISO 9001:2008 Registered
Sensor Type
Electrolytic phosphorous pentoxide sensor (P2O5)
on ceramic wafer
Measuring Range
Trace Moisture: 1250—0.1 ppmV
Dew/Frost Point: -20°C to –95°C
Accuracy
± 5% of ppmV reading
Response Time
90% of step change, one minute, typical
Hysteresis
None
General
Display: 2 Line LCD backlit
Operating temperature: 32° to 122°F (0° to 50°C)
Sample connection: 1/4” compression fitting,
standard model configured for positive pressure
Sample Flow Rate: 0.5 - 5 SCFH, regulated
Sample Pressure: 0 to 200 psig, regulated
Sensor Housing: 316 SS, flow thru head, 1/4 Inch
compression fittings, VCR optional
Sampling Options: May be configured for diffusion
sampling for glove box or isolation chamber
Power & Outputs
Power: 18 to 30Vdc, unregulated, 1A max
Outputs:
Analog: two, 4-20 mA, scalable by user
Alarm: two dry alarm relays, FORM A,
adjustable by user
Digital: RS-232 serial, bi-directional
Rev 2
Weights & Dimensions
Weight: 4 lbs. (1.81kg)
Environmental: Plastic IP66/67, NEMA
4 case
Dimensions: 5.1” (13cm) L x
3” (7.6cm) W x 5.1” (13cm) D
Options
Vacuum pump for sample extraction
VCR male or female ports
Sensor mounting bracket for diffusion
sampling
Loading...