Single Gas Alert Extreme Monitor

Single-Gas Detectors H2S, CO, SO2, Cl2, HCN, NO2, NH3, PH3, O2, O3, ETO
single gas monitor

Features of Gas Alert Monitor

  • High-contrast LCD shows real-time gas concentration 
  • LOW, HIGH and TWA (time weighted average) and STEL (short term exposure limit) alarm setpoints 
  • Backlight in low light (auto), in alarm (auto) and on demand 
  • Simple auto zero and auto calibration with diagnostics protection 
  • High-output 90 dB audible alarm
  • Wide-angled visual alarm bar 
  • Records and displays on demand TWA, STEL and peak exposure to gas encountered 
  • Continuous instrument status advice 
  • 3 year Lithium battery, field replaceable

The tough and compact GasAlert, available with an internal vibrator alarm, provides unequalled single-gas protection. Automated calibration and 3-year lithium battery mean extraordinary cost of ownership advantages. 

Weighing just 2.9 oz. (83 g), GasAlert continuously monitors
the ambient air for H2S, CO, SO2, Cl2, HCN, NO2, NH3, PH3 or O2.

The optional Sampler pack includes a rugged pump with self-regulating motor speed to provide consistent airflow in ever-changing environmental conditions. The sampler is connected by hose to a gasalert monitor and the fixed tube inserted in the area to be tested. Runs 30-hours on 2 AA alkaline or NiMH rechargeable batteries.
Pump constantly monitors itself for proper performance. Low flow alarm, battery alarm and system fault alarm with audible/visual warnings
Unique, manual flow-block test verifies proper performance
Built-in water trap and particulate filters.
Optional extra-long probes and sampling hoses available. Flow rate 300ml/min sampling distance up to 50ft

Low Level
Default High Level
Hydrogen Sulfide H2S  10 ppm  15 ppm 10ppm 15ppm 0-100ppm -40 to +50 °C
-40 to +122 °F
Sulfur Dioxide SO2 2 ppm  5 ppm  2ppm 5ppm 0-100ppm
Hydrogen Cyanide HCN 4.7 ppm  10.0 ppm 4.7ppm 10ppm 0-30 ppm
Carbon Monoxide CO  35 ppm  200 ppm 35ppm 200ppm  0-999ppm  -30 to +50 °C
-22 to +122 °F
Chlorine CL2 0.5 ppm  1.0 ppm 0.5ppm 1 ppm 0-50 ppm -20 to +50 °C
-4 to +122 °F
Nitrogen Dioxide NO2 2.0 ppm  5.0 ppm 2 ppm 5 ppm 0-99 ppm
Ammonia NH3 25 ppm   35 ppm 25ppm 50 ppm 0-100ppm
Phosphine PH3 0.3 ppm  1.0 ppm 1 ppm 2 ppm TBA
Oxygen (vol%)O2 NA NA 19.5% 23.5% 0-30%
Calibration:  Automatic
Backlight: Low light (auto)
alarm condition (auto); on demand
Full function self-test: Veri. es integrity of sensor, circuitry and battery; audible/visual alarms
Sensor: Plug-in, electrochemical cell (temperature compensated)
INDICATORS AND ALARMS: Clearly advises alarm levels both visually and audibly
Visual alarm: Flashing, wide-angled alarm lens with dual red LEDs, plus alarm LCD readout
Audible alarm High-output, pulsing 85 dB at 1 ft. / 0.3 m (typical)
  Con. dence beep: Every 5 seconds (. eld-selectable)
Other:  Low battery; off warning; sensor fail
Optional internal vibrator: Vibrates in sync with audible and visual alarms
CONTINUOUS LCD DISPLAY: Alphanumeric gas readout and status display advises:
Gas ppm or %: Continuously displays gas concentration present
TWA and STEL ppm or % Records and displays on demand
Peak ppm or %:  Records and displays peak (maximum) exposure to gas on demand
Setpoints: Displayed on activation (auto) and on demand in ppm or %
TESTS: Full function self-test on activation (auto)
Continuous (auto)
Case Impact-resistant ABS enclosure
Humidity: 5% to 95% RH (non-condensing) (15% to 90% non-condensing for PH3 and NH3)
EMI/RFI: Complies with EMC Directive 89/336/EEC
Battery type: 3-volt lithium (camera battery available locally)
Battery life: 3 years (9,000 hours)
Size:  1.1 x 2.0 x 3.75 inches / 28 x 50 x 95 mm
Weight: 2.9 oz. / 83 g


Ordering Information
Topac Part Number Description Price US$  
BW GAXT HDL Single Gas Hydrogen Sulfide (H2S) $299.00
BW GAXT H2DL Single Gas Hydrogen Sulfide (extended range) (H2S) $325.00
BW GAXT MDL Single gas Carbon Monoxide (CO) $299.00
BW GAXT M2DL Single gas Carbon Monoxide (H2 resistant) $430.00
BW GAXT XDL Single Gas Oxygen (O2) $299.00
BW GAXT SDL Single Gas Sulfur Dioxide (SO2) $430.00
BW GAXT CDL Single Gas Chlorine (Cl2) $430.00
BW GAXT ZDL Single Gas HCN  $430.00
BW GAXT DDL Single Gas Nitrogen Dioxide (NO2) $430.00
BW GAXT ADL Single Gas Ammonia (NH3) $535.00
BW GAXT A2DL Single Gas Ammonia extended range (NH3)  $535.00
BW GAXT PDL Single Gas Phosphine (PH3)  $430.00
BW GAXT GDL Single Gas Ozone (O3) $765.00
BW GAXT EDL Single Gas Ethylene oxide (ETO) C2H4O) $615.00
BW GAXT NDL Single Gas Nitric oxide (NO)  $430.00
BW GAXT VDL Single Chlorine Dioxide (ClO2)  $430.00
BW GACL1 Belt Clip with screw $7.00 -
BW GA BALERTProtective boot Concussion boot stainless steel alligator clip $33.00 -
BW BSPLASH Splash Guard (for use with boot) pack of 5 $11.00  
BW GATC1test cap

Spare Test Cap and hose
(included with new unit)

BW AS-02manual sample pump Manual aspirator pump 10ft hose $105.00  
BW GSPAKmotorized sampler kit Motorized sampling pack $395.00
MICODOCK2docking station Calibration and compliance logging station    

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

| Email | Home| Related |Request More Info|

This is a world wide web document copyright ©2014 by Topac Inc. - ALL RIGHTS RESERVED