Gasman Single Gas Detector from Crowcon Detection

Designed to meet the need for personal monitoring in tough industrial environments, the Crowcon Gasman Single Gas Detector is small, light and simple to use providing comprehensive warning of hazardous gas conditions.

Prices start at $339.00

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

Designed to meet the need for personal monitoring in tough industrial environments, the Crowcon Gasman Single Gas Detector is small, light and simple to use providing comprehensive warning of hazardous gas conditions. Featuring interchangeable i-module intelligent sensors and simple single button operation Gasman is the most flexible and easy to use product available today. Rugged in design meeting both IP65 and IP67 standards for ingress protection, the Gasman Single Gas Detector sets a new standard for personal monitors.


  • 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 and IP67 compliant
  • Fully interchangeable i-module sensors
  • Flammable toxic and oxygen sensors available
  • Rechargeable version for all gas types
  • Dry cell versions for toxics and oxygen
  • Data and event logging


Range Dependent on gas, see chart below
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, Non-rechargeable: Lithium battery
Operating Time* Rechargeable: 12 hours minimum for flammable unit,
Non-rechargeable: up to 2 years
Sampling Optional manual aspirator
Operating Temperature -4 to 149°F
Humidity 20-90% RH non-condensing
Intrinsically Safe Class 1, Div 1, Groups A, B, C, D
Ingress Protection IP65, designed for IP67
PC Interface RS232 connection from interface module in charger, RS232/USB available
Autocalibrator Gasman can be routinely calibrated using the Crowcon Autocalibrator II in conjunction with the PC software
Size 3.5″ H x 1.9″ W x .95″ D
Weight Flammable: 130g,
Oxygen: 95g,
Toxic: 80g

*Note: Operating time will depend on operating pattern and alarm occurrence. Frequent or long lasting alarms and use of the optional confidence beep will reduce battery life.

Sensor Specifications

0-100 ppm
25 ppm
20 seconds
Ammonia 0-1,000 ppm 25 ppm 20 seconds
Carbon Monoxide
0-500 ppm
30 ppm
20 seconds
Carbon Monoxide H2 Filtered 0-500 ppm 30 ppm 20 seconds
0-20 ppm
0.5 ppm
20 seconds
Chlorine Dioxide 0-1 ppm 0.5 ppm 20 seconds
Ethylene Oxide 0-10 ppm 1 ppm  20 seconds
0-1 ppm
0.1 ppm
20 seconds
0-2,000 ppm
20 seconds
Hydrogen Cyanide
0-30 ppm
5 ppm
20 seconds
Hydrogen Fluoride
0-10 ppm
1 ppm
20 seconds
Hydrogen Sulfide
0-100 ppm
10 ppm
20 seconds
Nitrogen Dioxide
0-20 ppm
3 ppm
20 seconds
Nitric Oxide
0-100 ppm
50 ppm
20 seconds
0-1 ppm
0.1 ppm
20 seconds
0-1 ppm
0.1 ppm
20 seconds
0-5 ppm
0.2 ppm
20 seconds
Sulfur Dioxide
0-20 ppm
1 ppm
20 seconds

Ordering Information

Each unit includes a calibration flow cap, pocket clip, charger  and instruction manual. The Combustible Gasman is supplied with rechargeable batteries and requires a charger, price does not include charger. The Gasman for Oxygen and Toxic can be supplied with disposable or rechargeable batteries, please specify. Optional accessories include alligator clip, universal harness plate, shoulder strap, chest harness or aspirator assembly. For pricing, please call AFC International at 1-800-952-3293, 219-987-6825 or fax 219-987-6826 or email

Catalog No.
Gasman Gas Detector for Carbon Monoxide
Gasman Gas Detector for Carbon Monoxide, H2 Filtered GS-CS-A-012-G
Gasman Gas Detector for Hydrogen Sulfide GS-AI-A-012-G
Gasman Gas Detector for Hydrogen, 0-100% Hydrogen
Gasman Gas Detector for Sulfur Dioxide
Gasman Gas Detector for Chlorine
Gasman Gas Detector for Chlorine Dioxide
Gasman Gas Detector for Nitrogen Dioxide
Gasman Gas Detector for Phosphine
Gasman Gas Detector for Ammonia
Gasman Gas Detector for Ammonia. High Range
Gasman Gas Detector for Hydrogen Cyanide
Gasman Gas Detector for Hydrogen Fluoride
Gasman Gas Detector for Ozone
Gasman Gas Detector for Fluorine
Gasman Gas Detector for Nitric Oxide
Gasman Gas Detector for Phosgene
Gasman Gas Detector for CO2, Infrared, 0-5%
Alligator Clip
Harness Plate
Shoulder Strap
Chest Harness
Aspirator Assembly


Gasman Single Gas Detector literature

Tags: Ammonia Gas Detector, Carbon Monoxide Gas Detector, Chlorine Gas Detector, Chlorine Dioxide Gas Detector, Ethylene Oxide Gas Detector, Fluorine Gas Detector, Hydrogen Gas Detector, Hydrogen Cyanide Gas Detector, Hydrogen Fluoride Gas Detector, Hydrogen Sulfide Gas Detector, Nitrogen Dioxide Gas Detector, Nitric Oxide Gas Detector, Ozone Gas Detector, Phosgene Gas Detector, Phosphine Gas Detector, Sulfur Dioxide.

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