Item #: M5IR
Our Price: $580.00
Oxygen Sensor  
Combustible Gas  
1st Toxic Sensor  
2nd Toxic Sensor  

Description  more details

In the configurator above not all combinations are possible or make sense. For example there is no point to select a monitor with no gases. And whilst it is possible to select a unit with only one gas this is not really cost effective for a unit designed for multiple gases unless your interest is in the IR CO2 sensor. There are single gas sensors available elsewhere on this site. We leave it up to you to make sensible choices.
The rechargeable versions come with US 110V adaptors. For other countries make a note of the voltage you require in the remarks box at checkout.

Providing protection from up to five potential atmospheric hazards including oxygen, combustible and toxic gases and especially carbon dioxide. GasAlertMicro 5PIR is unparalleled in its versatility, capability and overall value.
Continuously monitoring and displaying concentrations of up to five gases, the compact and lightweight GasAlertMicro 5 was designed and engineered with an extensive host of applications in mind.

 Features of Gas Alert Micro 5IR Monitor CO2 & Toxic Gases Version

  • Integral concussion-proof boot
  • Raise buttons easy to use with gloves
  • Optional integral motorized pump option for remote sampling
  • Powered by three AA alkaline batteries or a hot-swappable rechargeable battery pack
  • Triple alarms (audible, visual and vibrating)
  • Multi-language support in English, French, German, Spanish and Portuguese
  • Large, user selectable backlit LCD
  • Four alarm levels: Low, High, TWA and STEL
  • Compatible with MicroDock II Automatic Test and Calibration Station
  • Datalogging store and recall event information
  • Wide range of user selectable field options including password protection, safe and stealth modes.
  • Full function self-test confirms sensor, battery and circuitry integrity and audible/visual alarms on activation.
  • IR Sensor for Carbon Dioxide (CO2) 


GasAlertMicro5 with IR CO2 configuration
Confined Space Entry Respiration and aerobic bacterial decomposition
Wineries and Breweries
By-product of yeast fermentation
Agriculture Greenhouses, mushroom farms use CO2 to enhance growth; also used to speed ripening of fruits and vegetables, aerobic bacteria in manure pits
Marine Fuel Transport /
Shipping and Shipyards
Used for fi re suppression and inerting cargo holds
Oil Well Fracturing
Injected into mature wells for further oil extraction
Wastewater Treatment Aerobic bacteria
Food Industry / Cold Storage Solid CO2 (dry ice) used as a refrigerant and for carbonation; CO2 used in packaging to extend storage shelf life
Industrial and Chemical
CO2 used in various processes
Landfills Biodegradation (aerobic decomposition) of waste




H2S 0-500 1.0 0.1
CO 0-999 1.0 N/A
Twin Tox(H2S) 0-500 1.0 0.1
Twin Tox(CO) 0-500 1.0 N/A
O2 0-30% 0.1% N/A
SO2 0-150 1.0 0.1
PH3 0-50 1.0 0.1
NH3 0-100 1.0 0.1
NO2 0-99.9 1.0 0.1
HCN 0-30 1.0 0.1
Cl2 0-50 1.0 0.1
ClO2 0-1.0 0.1 0.01
O3 0-1.0 0.1 0.01
(see PID version
0-1000 1 N/A
IR (CO2)
This version
0-5.0% v/v
Alarm set points are adjustable by the user and the set points are automatically displayed during start up.
Multi-Gas Detector up to 5 gases H2S, CO, O2, SO2, PH3, NH3, NO2, HCN, Cl2, ClO2, O3, and combustible VOCs and CO2 depending on Version
Size 5.7 x 2.9 x1.5 inches 14.5x7.4x3.8 mm
Weight 13.1 oz / 370 g
Temperature -4 to +122°F / -20 to +50°C (Standard unit)
+14 to +104°F / -10 to +40°C (PID unit)
Humidity 0% - 95% RH (non-condensing)
Alarms - Visual, vibrating, audible (95dB)
- Low, High, STEL, TWA, OL (over limit)
Tests Audible/visual alarms on activation,
sensor integrity, battery and circuitry (continuous)
Pump Otional sample pump up to 66ft /20m
Typical battery life 10 hours (typical); recharges in less than 4 hours
User options

Confidence beep
Set STEL interval
Set TWA method

Sensor on/off
Latching alarms
Safe display mode
Stealth mode
Adjust Clock
Set Data Logger rate
Passcode protection

Correction factor Library (LEL,PID)
Fast pump
Combustible gas measurement (% LEL or % by volume methane)
O2 auto calibration on start up
Automatic backlight
Sleep mode

User-settable calibration gas level
Calibration due lockout
Daily bump test
Force calibration when overdue
Language choices (five)

Ratings EMI/RFI: Complies with EMC Directive 89/336/EEC
IP 65/67
Certifications and
Class I, Div. 1, Gr. A, B, C, D
American Bureau of Shipping -Toxic and PID models
GA Ex ia IIC T4
IECEx: GA Ex ia IIC T4
European Conformity
Warranty Full two year warranty including all sensors
WARRANTY:  2 years including sensors (1 year NH3, CL2, O3, CL02, PID lamp)


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