Nuvair Multigas Color Alarm Analyzer


Are you in search of a complete multiple gas monitoring solution? Look no further! The Nuvair Multigas Color combines oxygen, carbon monoxide and carbon dioxide sensors with a moisture monitor and VOC (Volatile Organic Compound, including oil vapor) analyzer in a single water- and impact-resistant carrying case. The color display allows for continuous monitoring of ambient and compressed gases in a variety of environments. Designed for hyperbaric chamber use. Select power and moisture probe options using the drop-down boxes, below.


The Nuvair Multigas Color is mounted in a water- and impact-resistant case with a powder-coated aluminum instrument panel. TFT 320 x 240 dpi color display with backlight LED generates 600 nits (cd/m2) light intensity and allows for viewing of dynamic gas concentration graphs.

Power Options

SKU Power Supply
9641-NV-E-US Wall Plug-in: US (United States) includes power adapter for cigarrette car lighter
9641-NV-E-AU Wall Plug-in: AU (Australia) includes power adapter for cigarette car lighter
9641-NV-E-UK Wall Plug-in: UK (United Kingdom) includes power adapter for cigarette car lighter
9641-NV-E-EU Wall Plug-in: EU (European Union) includes power adapter for cigarette car lighter
9641-NV-LB Rechargeable Lithium Battery & Charger
9641-NV-DP DIN Rail Power Supply


  • Programmable alarm thresholds
  • Audible and visual alarms
  • Fast response
  • Packaged in a compact water- and impact-resistant container (12 x 10.6 x 5.7 in / 305 x 270 x 144 mm)
  • Reliable and accurate
  • Optional relays for external alarm or compressor control
  • Upgrade firmware using an SD card
  • Designed for use in hyperbaric chambers; tested to 35 bar/ata. (In pressurized environments, the calibration of O2 and CO2 sensors must be performed at the same pressure with sample or ambient gas of known concentration.)


  • Digital analyzer with color display plots dynamic gas concentration graphs
  • Audible and visual alarms for oxygen (O2), carbon monoxide (CO), carbon dioxide (CO2), moisture (H2O) & volatile organic compound, including oil vapor (VOC)
  • Controlled by a rotary/push knob
  • Sensor status indicators
  • User replaceable Li-ion batteries and sensors
  • On-board acoustic buzzer alarm
  • Battery voltage indicator
  • Includes a car lighter socket external power supply
  • Plug the unit into a personal computer for continuous data reading
  • Bluetooth LE equipped
  • Cortex M4 microprocessor
  • Micro SD card reader/writer produces a .CSV spreadsheet file
  • Conversion rate: 10 ms
  • Sampling time: 100 ms (min) for each channel

CO2 Sensor

  • Non-dispersive infrared (NDIR) sensor
  • Standard range: 0-2000 ppm
  • Standard resolution: 20 ppm
  • Optional range for hyperbaric chamber use: 0-5000 ppm 
  • Additional ranges available for any percentage or ppm

Volatile Organic Compounds (VOC) Analyzer

  • Available with readings in PPMv or mg/m3 with the ability to set different compounds for a better resolution and accuracy

Moisture Monitor

  • Select one of three available moisture probe configurations, above
  • Moisture reading of relative humidity from 0.0 to 99.9%
  • Absolute humidity in mg/m3 or PPMv
  • New capacitive technology sensor 
  • Available dew point sensor up to -110°C

O2 Sensor

  • 0-100% range
  • Resolution: 0.1%
  • Long life electromechanical sensor

CO Sensor

  • 0-50 ppm or 0-300 ppm range
  • Resolution: 1 ppm 
  • Long life electrochemical sensor

Optional Helium (He) Sensor Configuration

Available as a special order item, helium sensors can be optionally configured in the Multigas Color. Please call us for details and ordering. Typical configurations include:

  • Helium, Oxygen, Temperature
  • Helium, Oxygen, Carbon Monoxide
  • Helium, Oxygen, Carbon Monoxide, Carbon Dioxide

Software Menu

  • Settings
  • Start Log
  • Brightness
  • Languages
  • Units
  • Alarm Configuration
  • Date and Time
  • Select Skin
  • Calibration
  • Alarm
  • Export Data

The Nuvair Multigas Color is custom-built to your requirements. For this reason, this unit may not be available for immediate shipping. Please contact the sales team for estimated lead times.

WARNING: Never expose gas sensors to pressure or you may cause damage and/or false readings. Damaged sensors will not provide accurate gas analysis. Most gas analyzers can be used to analyze a regulated gas sample flow, the contents of a gas cylinder, or the flow from a regulator. The flow rate of gas must equal 1-5 L/min. To produce this flow, a Flow Restrictor and Regulator may be required. A faulty Flow Restrictor can lead to a false analyzer reading. Flow Restrictors should be regularly tested with a Flow Meter. Inaccurate gas analysis can lead to serious personal injury or death.