Pro H2O Alarm Analyzer w/ SPDT Relays in Case


Powered by rechargeable lithium battery, the Pro H2O Analyzer with SPDT relays measures moisture (H2O) levels in gases in the range of 0 to 500 parts per million (ppm). The analyzer is designed to either verify H2O concentration in stored gas cylinders or monitor continuous compressor gas flow. 10A SPDT relays shut down equipment or sounds external alarm. Extend the service life of air filtration systems by monitoring excessive moisture levels. Sample manifold sold separately. Inquire with your sales representative for sensor replacement information.


Mounted in a rugged water-resistant case and powered by a rechargeable lithium-ion battery, the Nuvair Pro H2O Alarm analyzer measures moisture levels in breathing gas mixtures or air. Audible and visual alarms for low and high moisture content can be set by the user. If the alarm sounds, the included 10A @ 250VAC, 10A @ 30VDC SPDT relay shuts down compressors automatically or sounds a remote alarm. Sample manifold sold separately.


  • Audible and visual alarms for high moisture content
  • Universal power options
  • 10A SPDT relays
  • Working pressures of 100–6000 psi
  • No limit on flow rates
  • Programmable alarm thresholds
  • Fast response
  • Easy to operate, reliable and accurate

Available Options

  • Three available external manifold types


Display Range 0–500 ppm
Display Accuracy 5 ppm + 9% from measured value
Sensor Type Capacitive
SPDT Relay Capacity 10A @ 250 VAC / 30 VDC
Expected Sensor Life 3 years
Power 2600mAh lithium battery with 110~240 V charger
Response Time <5 min –4° to –76°F (–20° to –60°C)
<15 sec –76° to –4°F (–60° to –20°C)
Operating Temperature / Humidity –40° to 158°F (–40° to 70°C) 0 to 100% RH
Storage Temperature –40° to 140°F (–40° to 60°C)
Pressure 0 to 80 bar
Warranty 12 months
Dimensions (L x W x H) 8.7 × 3.9 × 7.5 in (22.1 × 9.9 × 19.1 cm)
Weight 2.6 lb (1.2 kg) box only