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Crowcon Gasman Personal Gas Detector 

Weatherproof, Shockproof and Usability Make the Gasman Portable Gas Detector Easy to Use in Harsh Environments...

The new Gasman personal single gas monitor provides full function, yet is small enough to easily fit into a pocket or clip onto a belt. Gasman is available in versions for various gases such as Ammonia, Chlorine, Carbon Monoxide, and Hydrogen Cyanide.  The hazards of gas exposure are generally categorized as combustible, toxic and oxygen deficiency.  Hydrogen, Methane and natural gas are combustible gases of major concern in industrial facilities.  Toxic gases create an immediate and long-term health risk to personnel.  They include the gases referred to above plus many others listed in specifications.  Gasman's reliability assures safe and accurate hazardous gas detection.

Depletion of Oxygen concentration in an occupied area may result in asphyxiation. OSHA has established 19.5 percent Oxygen in air as the lower limit of safety. The Gasman version for oxygen has a sensor range of 0-25% Vol with a 10 second response time.

The Gasman's single button operation and intelligent design allow easy use in harsh environments where maneuverability may be an issue.

Keeping Gas Detection Simple...

Gasman alerts user to presence of hazardous gas by vibrating and giving a loud audible alarm with red/blue LED display. Features include single-button control and interchangeable i-module intelligent sensors for oxygen, toxic, and flammable gas monitoring. Gasman's user friendly backlit LCD display allows easy viewing of gas readings, alarm conditions, and battery life.

Gasman personal gas monitor
Crowcon Gasman
Portable Gas Detector


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* Readily absorbed gases CL2, F2, HCL, HF, NO2, O3, and PH3 - WILL NOT be detected if an aspirator or hose are used.

Full Time Data Logging Option
in addition to Event Log Function - Add $75.00

gasman handheld gas monitor

Gasman is Intrinsically Safe and IP65 and IP67 Compliant...

The new Gasman personal gas monitor features and intelligent design that is intrinsically safe.  A protection concept employed in potentially explosive atmospheres is intrinsic safety.  An intrinsically safe combustible gas instrument is one designed to be unable to release energy (electrical or thermal) that can cause an ignition of combustible gas.  IP (Ingress Protection) is an international classification system for the sealing effectiveness of the enclosures of electrical instruments against the intrusion of foreign bodies and moisture.  The two digits following IP refer to the Degrees of Protection offered by that particular device.  Being IP65 and IP67 compliant means that Gasman personal gas detector is protected against dust, water from a nozzle and immersion in water.

Two versions of the Gasman are available: a rechargeable unit with a lithium-ion battery for 12 hours' operation for use with all gas types, and a unit powered by a replaceable long-life non-rechargeable battery for toxic gas and oxygen detection.

Gas Detection and Personal Safety...

Toxic gases create an immediate and long-term health risk to personnel.  They include such gases as hydrogen chloride, chlorine, ammonia and carbon monoxide.  Carbon monoxide is an odorless gas that can build up when heating fuel is burned improperly or incompletely.  A malfunctioning furnace or appliance, a blocked chimney, or a cracked ventilation system can all lead to dangerous levels of carbon monoxide.  Gasman carbon monoxide version has a sensor range of 0-500 ppm with alarm sounding at 35 ppm in 20 seconds.

Features of Gasman Personal Gas Detector...

  • Water and dust resistant - IP65 and IP67 compliant
  • Intrinsically safe for use in hazardous areas
  • Large Backlit display - 30 day advance warning when calibration is due.
  • Double-Action "off button" prevents accidental turn-off
  • Front Panel Calibration
  • Loud 95 dBA(@1 foot) siren
  • Intense twin red/blue visual alarm
  • Oxygen, toxic and combustible gas detection versions available
  • Lightweight - 3.7-4.6 oz depending on sensor type
  • Dry cell versions available for oxygen and toxics
  • Data and event logging assure accurate data collection and documentation
  • Windows (tm) compatible

Gasman is manufactured by Crowcon, a world leader of high quality gas leak detection instruments for over 35 years.  Crowcon's innovative features and  easy to operate design assures user friendly operation and reliable personal protection that meets the highest standards of quality.

Specifications for Crowcon Gasman...
Weight 7.5 Ounces (210G), Including Batteries
Dimensions 5.1h x 2.4w inches x (130h x 60w 30d mm)
Typical measuring ranges and alarm settings measuring ranges Gas Range Alarm
0-100% LEL 20% LEL
Hydrogen Sulfide 0-50 10 PPM
Hydrogen Chloride 0-10ppm 2ppm
Hydrogen Flouride 0-10ppm 2ppm
Ethylene Oxide 0-10ppm 2ppm
Flourine 0-1ppm .1ppm
Carbon Monoxide 0-500 30 PPM
Sulfer Dioxide 0-10 PPM 2 PPM
Chlorine 0-5 PPM 0.5 PPM
Nitrogen Dioxide 0-10 PPM 2 PPM
Nitric Oxide 0-100ppm 25ppm
Ozone 0-1ppm .2ppm
Phosphine 0-5 PPM 0.5 PPM
Ammonia 0-999 PPM 25 PPM
Hydrogen Cyanide 0-25 PPM 10 PPM
Hydrogen 0-999 PPM 100 PPM
(non combustible level )    
Oxygen 0-25% 19% & 23%
Further toxic gas ranges available
Typical Alarm Response Time Methane 20 Seconds
Oxygen 10 Seconds
Typical Toxic Gas 20 Seconds
Expected Sensor Life Flammable 5 Years
Toxic 3 Years
Oxygen 1 Years minimum
Audible Alarm 94dBA at 1 foot, Selectable tones,
Confidence Blip (selectable)
Triple Beep Every 10 seconds for discharged battery
Visible Alarm Ultra Bright Flashing LED pair display indicates alarm types
Display 7 Segment high contrast LCD
10MM character height with backlight
Symbols for peak hold, low battery, zero mode,
calibration mode, Alarm 1, Alarm 2, 15 min, TWA,
8 Hour TWA
Datalogging Adjustable sample rate
30-3000 hours @ 1 min sample rate
(depending on gas concentration)
Battery Life
Toxic gas / Oxygen Models
(3x AA alkaline):
3000 hrs (12 months normal intermittent use)
Flammable gas models (Nickel Hydride Rechargeable):
12 hours battery life ( 16 hours recharge time)
8 hours battery life ( 11 hours recharge time)
Operating temp. range -4F to +122F (-20C to +50C)
Humidity 0-95% RH non condensing
Approval Codes USA & Canada Class 1 division 1, Groups
A, B, C, D FCC 47
  Europe CFR CH.1 EEx la (d) IIC T3/4
Standards USA & Canada UL913
  Europe EN50014, EN40018, EN50029
RF radiation EN50081-2
ETSI EN 300 683 (vibrator option only)
RF/ESD immunity EN50082-2
ETSI EN 300 693 (vibrator option only)

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See our entire line of Portable Gas Monitors or read about all Gas Monitors.

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