PhyMetrix Compressed Air Moisture Analyzer model: DewPatrol
Cost Effective compressed air / instrument air moisture measurement!

Use as a Battery Powered Portable
Permanently installed On-Line
at a very low cost

  • Rechargeable Battery with weatherproof connector
  • Integral flow control valve
  • Built-in flow meter
  • Integral demister with 360° view of contaminants and drain valve
  • Optional Pressure Sensor with automatic dewpoint correction
  • Direct on-the-pipe mounting
  • Swiveling Quick Connect
  • -110°C to +20°C dewpoint Sensor
  • Fast, Accurate and Repeatable
  • Built-in temperature compensation
  • State-of-the-art electronics & software
  • Advanced User-friendly Interface
  • Small & Lightweight
  • Optional NFPA compliant Audio Visual Alarm
  • Optional 4/20mA output with HART®
  • Optional Relay contacts
  • Graphical display
  • Programmable data logging
  • Battery backed clock calendar
  • 1/4” NPT port on a swivel to adapt to any quick connect
  • On-screen histogram and trend graph
  • Impact resistant IP65 enclosure
  • NIST calibrations
  • Units of measure:
    °C & °F dewpoint, ppmV, ppmW,
    µB H2O vapor pressure, grams of H2O / m3,
    Lbs H2O/106 standard cubic feet Natural Gas
  • Virtual Analyzer PC training & demo software
Moisture Sensor
  • Range: -110°C to +20°C dewpoint ( -166°F to +68°F dewpoint )
  • Accuracy: ±2°C temperature corrected
  • Repeatability: 0.8°C
  • Response time: 95% of step change in 3 min.
  • Sample flow: >1 LPM
Temperature Sensor
  • Range:  -40°C to +70°C
  • Accuracy:  ±2°C
Pressure Sensor (optional)
  • 2 to 300 PSIA ±1%, 316L stainless steel wetted parts, higher pressures can be ordered optionally
Flow meter
  • Body: Styrene Acrylonitrile, Max Pressure: 50 psi (3.4 bar) [ this pressure limitation is for the exhaust ]
Inlet Metering Valve
  • Max pressure: 300 psi (20 bar) [ this pressure limitation is for the inlet, and can be utilized only if outlet is unrestricted]
  • Easy to carry or use on desktop, lightweight 2 Lbs
  • Easy to read graphic LCD display with user controlled backlight brightness (LCD is readable without the backlight)
  • Snap dome tactile membrane switches with dynamically assigned legends
  • Audible feedback upon button press as well as for warnings and alarms
  • Auto scaling graph/histogram on moisture measurement display for stability verification
  • Easy to use with verbose built-in context sensitive Help screens
  • Battery Saver, with user selectable Auto-power-down times, can also be disabled
  • Built-in pressure measurement and pressure corrected moisture readings, simultaneously displayed  with the uncorrected reading for greater ease of understanding
  • Verbose Status bar with indications, warnings and audible errors
  • User selectable locking with or without a password.
  • Built-in battery backed clock calendar
  • External AC Universal Power adapter (100-240VAC 50-60Hz) with USB connector
  • Rechargeable Li-Ion battery, recharges through the USB connector from the PC or from the supplied universal power adapter
  • Sampling system and sensor are isolated from electrical interface and supply grounds
  • Measurement resolution of moisture sensor: 1pF resulting in less than 0.01 ̊C
  • External power and I/O: USB mini B female connector – IP67 / IP68 with Sealing Cap
  • Alarm Relay Option – 3A, 250VAC30VDC contacts
  • AV alarm >80 dB @ 3′, 3 jumbo Red LEDs 5100 mcd each, complies with NFPA99, 1996 edition
  • Enclosure
    • ABS (UL94-HB), with EDPM gasket to meet IP65, NEMA-4X
    • Dimensions H: 5.71″(145mm) W: 4.13″(105mm) D: 2.56″(65mm)
  • Weight Total: 2 Lbs (~1 Kg)
  • 1/4″ NPT Female Swivel inlet, allowing connection with standard quick connect
  • Aluminum and Viton wetted parts, small surface area sampling chamber for fast response time.
  • Pressure: Inlet 300 psi (20 bar) Outlet 50 psi (3.4 bar)
Temperature Range
  • dewPatrol Analyzer: -20°C to +60°C
  • Electronics: -40°C to +85°C
  • Moisture Sensor: -20°C to +60°C
  • Pressure Sensor: -20°C to +85°C
  • LCD operating: -20°C to +70°C storage: -30°C to +80°C
  • Enclosure: -40°C to +60°C
Miscellaneous Features
  • NIST traceable calibrations
  • Units of measure: °C & °F dewpoint, ppmV, ppmW, µB H2O vapor pressure, grams of H2O / m3,
    Lbs H2O /106 standard cubic feet in Natural Gas. (All units auto-scaled)
  • Digital & Analog I/O:  USB, 4/20mA with HART®
  • Data logging – single point, multipoint, time stamping, each sample records: dewpoint, temperature and pressure,  ( memory > 4,000 samples)
  • Virtual Analyzer PC software for training and evaluation, allows the user to experience the exact interface on their own PC with voice explanations



Not Shown But Included

  • USB Cable
  • Universal AC Charger
  • Plug set for international shipments
  • User’s Manual
  • NIST Certificate


PhyMetrix DewPatrol Moisture Analyzer Model: PDPa
Included Accessories: USB cable (mini B male to A male), AC universal power adapter with USB connector
Pressure Sensor Option 0-150 PSIA W/ Automatic Pressure Correction suffix -P
Analog Output 4/20 mA with HART® Option suffix -A
AC powered option (comes with AC power cord instead of USB) suffix -W
Alarm Relay option (only with AC powered option) suffix -R
Audio-Visual Alarm option (only with AC powered option) suffix -L