Hand held Multi-Gas Alert Monitor with options for CO2 and VOCs
Intrinsically Safe Rated

Multi-Gas Detector H2S, CO, O2, SO2, PH3, NH3, NO2, HCN, Cl2, ClO2, O3, and combustible
Continuous monitoring for up to 5 of the above hazardous gases, 

5 gas monitor

Features of Gas Alert Micro 5 Monitor

  • 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 models 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
  • Optional sensors for VOCs and CO2 hazards - see versions below

Providing protection from up to five potential atmospheric hazards including oxygen, combustible and toxic gases, GasAlertMicro 5 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.

Gases and Applications

Three Models
The GasAlertmicro5 is available in three models incorporating either electrochemical sensors for toxic gases a PID (photoionisation)sensor for VOCs or an IR(infra red) sensor for Carbon Dioxide

Gas Measuring


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
PID (VOCs) 0-1000 1 N/A
IR (CO2) 0-50,000
0-5.0% v/v
Alarm set points are adjustable by the user and the set points are automatically displayed during start up.
GasAlertMicro5 with PID (VOC) configuration
Confined Space Entry Respiration and aerobic bacterial decomposition
Hazmat / Homeland Security Detect flammables not detected by LEL sensor
(diesel, gasoline vapor, turpentine, etc)
Industrial Hygiene and
Confi ned Space
Wide number of potential hazards (benzene, diesel,
ethanol, toluene, etc.) dependant on industry
Airlines (wing-tank entry) Jet fuel not detectable by LEL sensor, PID required
Landfills Decomposing organic matter, emission of chemical compounds
Oil and Gas By-products of refi ning processes
Chemical Plants Number of potential hazards dependant on product
and process of manufacturing
GasAlertMicro5 with standard toxic gas configuration
Confined Space Entry Various sources - industrial chemicals
Wastewater Plants Cl2, NH3, ClO2 from treatment
Steel / Iron Production NO2
Pulp and Paper Cl2 from bleaching
Food and Beverage NH3 from refrigerants, ice production PH3 from fumigation
Construction Confined space entry, trenching, and NO2 from diesel exhaust
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
General Specification Gas Alert Micro 5

Ordering Information
Topac Part Number Description Price guide
Gas Alert Micro 5 with standard sensors
M5-XWSY (5 gases) Lithium battery %LEL O2 H2S, CO, and SO2 $1595.00 order on line
M5-XWAY (5 gases) Lithium battery %LEL O2 H2S, CO, and NH3 $1705.00
M5-XWCY (5 gases) Lithium battery %LEL O2 H2S, CO, and CL2 $1595.00
M5-XW0Y (4 gases)Alakaline battery %LEL, O2, H2S, CO $1245.00
Gas Alert Micro5 with PID sensor for VOCs
M5PID-XWQY (5 gases)Alakaline batteries VOCs, %LEL, O2, H2S, CO $1920.00 order online
M5PID-XWQ0 (3 gases)Alakaline batteries VOCs, %LEL, O2 $1645.00
M5PID-00Q0 (1 gases)Alakaline batteries VOCs $1345.00
Gas Alert Micro 5 with IR sensor for CO2
M5IR-XWBY (5 gases)Lithium Battery CO2, %LEL, O2, H2S, CO $2180.00 order online
M5IR-XWBH (4 gases)Lithium battery CO2, %LEL, O2, H2S $2115.00
M5IR-XWB0 (3 gases)Lithium battery CO2, %LEL, O2 $1905.00
Shown above are the most common configurations others are possible please call for assistance or - Product can be configured online with all the various option in our store instrumentsonline.com  
Add /R to the part number Upgrade to rechargeable Lithium polymer battery pack and cradle charger add
Add /P to the part number Upgrade to include integrated pump add
Add /D to the part number Data logging monitor with software add
M5-CK-DLconfined space kit Confined Space Kit - Deluxe
conveniently holds your gas detector and everything you need for safe sampling in confined space entry work. Includes Carrying Holster; Manual aspirator kit 1 ft. / 0.3 m Sample Probe; 10 ft. / 3.3 m sampling hose and 3 ft. / 1 m calibration hose, both with quick-connector fitting; 0.5 LPM regulator; and space to hold your detector kit and one 34 L calibration gas cylinder (gas not included )
M5PUMPGMA5 pump Pump integrates with unit includes sample probe with water trap filter and 5ft of sampling tube $165.00  
GA HM5Holster Carrying Holster $30.00  
MC AS01manual aspirator Manual Aspirator kit with probe $85.00 -
GAMB5-2pump boot Concussion proof boot for units with pump installed $45.00  
GAMB5-1boot Concussion proof boot for diffusion units (no pump installed) $45.00  
GA V-CHRG4auto power adaptor Vehicle power adaptor $30.00  
GAPA1 Wall power adaptor (replacement) $30.00  
MICRODOCK2datalogging and calibration Microdock2 data logging calibration and compliance monitoring    

Topac Inc. 231 CJC Highway, Suite 103 Cohasset MA 02025 USA
Tel: 781 740 8778 Fax: 781 740 8779

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