Gasman CO2 Infrared Single Gas Detector

The Crowcon Gasman CO2 Infrared Gas Detector is carbon dioxide detection you can trust. It is the simplest carbon dioxide instrument for monitoring in ambient air.

Prices start at $690.00

For best pricing, please call 1-800-952-3293 or email

The Crowcon Gasman CO2 Infrared Gas Detector is carbon dioxide detection you can trust. It is the simplest carbon dioxide instrument for monitoring in ambient air. The highly accurate infrared sensing technology is inherently reliable. This instrument is also shockproof and weather protected. The Gasman CO2 has intelligent sensors and a self checking functionality.


  • True one button operation
  • Easy to read LCD display with backlight
  • Clear indication of operating status
  • 30 days advance calibration due warning
  • 95dBA audible alarm
  • Striking twin red/blue visual alarm
  • Internal vibrating alarm
  • 2 levels of instantaneous alarm
  • Time weighted average alarms for toxic versions
  • Tough polycarbonate housing
  • Full elastomeric overmolding
  • High impact resistance
  • IP65 compliant
  • Intelligent i-module sensors technology
  • 54,000 reading data logging storage capacity
  • 4,800+ event logging capacity
  • Wide range of accessories


Range 0-5.00% v/v, Alarm 1: 0.50% v/v, Alarm 2: 1.50% v/v
Audible Alarms 95 dBA, multiple alarm sounds allow selection of distinctive tones for different alarm levels
Visual Alarms Dual color red/blue flashing LEDs in gas hazard
Vibration Alarm Internal
Display Custom LCD with backlight, with display of gas concentration. Graphic symbols for battery (with proportional indication of remaining operation time) and display mode. Start up indication when calibration is due within 30 days, calibration overdue or service required.
Display Mode Normal display for real time gas concentration levels. Display recall for Peak readings and TWA.
Datalogging Full timed datalogging with adjustable sample rate, set to 1 minute data rate, 900 hours storage at 1 minute interval, 4,800+ capacity event logging to record all instrument events including: Switch on/off, battery status, alarms activate/clear including peak values of response, gas test pass or fail, all events are time stamped.
Battery Type Rechargeable: Li-ion battery
Operating Time > 24 hours
Sampling Optional manual aspirator
Operating Temperature -4 to 131°F
Humidity 0-99% RH non-condensing
Typical Response Times 30 seconds
Ingress Protection IP65
RFI/EMC EN50270, EN50271
PC Interface RS232 connection from interface module in charger, RS232/USB converter available
Autocalibrator Gasman can be routinely calibrated using the Crowcon Autocalibrator II in conjunction with the PC software
Accessories Gasman is supplied with an integral pocket clip
Charger Single way drop in charger with options of UK, European or US style plug in mains supplies or in line 110VAC, 230VAC or universal supplies. Optional PC interface module within the single way charger. Vehicle lighter socket lead available. 5 Way multicharger with universal power supply.
Size 3.5″ H x 1.9″ W x .95″ D
Weight 130g

Ordering Information

Each unit includes a calibration flow cap, pocket clip and instruction manual. For pricing, please call AFC International at 1-800-952-3293, 219-987-6825 or fax 219-987-6826 or email

Catalog No.
Gasman Infrared Single Gas Detector for CO2
Alligator Clip
Harness Plate
Shoulder Strap
Chest Harness
Aspirator Assembly


Gasman CO2 Infrared Single Gas Detection Instrument literature

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