Tango TX1 Single Gas Monitor

For the detection of CO, H2S, NO2 or SO2.

By wearing the Tango™ TX1, your workers will be the safest single gas monitor users in the world. A 3-year runtime and patent pending DualSense™ Technology increases worker safety, regardless of bump test frequency, while reducing overall costs. 

For more information on the Tango TX1 Single Gas Monitor, contact your local Air-Met office. 
  • Significantly increases worker safety – DualSense Technology ensures that regardless of your current bump test policy, you will be significantly safer with the Tango than with any other single gas instrument on the market today.*  
  • Longer battery life – Operates continuously in an “always-on” mode for three years. After the battery can no longer support instrument life, it can be replaced for another three years of continuous operation.
  • Louder instrument alarm – Alarms at 100dB at 10 centimetres making it twice the volume of Industrial Scientific’s GasBadge units and louder than any single gas instrument on the market. Alarm volume can be increased by about 10dB for higher-noise environments with the addition of the optional AlarmAmp™.
Instrument Warranty Three-year warranty which does not include battery, sensors and filters.
CO and H2S sensors are warranted for 3 years from the initial purchase date.
All other sensors are warranted for 2 years from the initial purchase date.
Display Segment liquid crystal display (LCD)
Keypad Two buttons
Case Materials Case top: Polycarbonate with a protective rubber overmold
Case bottom: Conductive polycarbonate
Alarms Three strobe-emitting visual alarm LEDs (two red; one blue);
100 decibel (dB) audible alarm at a distance of 10 cm (3.94"); Vibration alarm
Dimensions 99 x 51 x 35 mm (3.9" x 2.0" x 1.4")
Weight 126.0 g (4.4 oz.)
Temperature Range  -40°C to +50°C (-40°F to +122°F) †
Humidity Range 15%-95% Non-condensing (continuous)
Sensors CO, H2S, NO2, SO2 - Electrochemical sensor technology
Sensor Measuring Ranges Carbon Monoxide (CO): 1 to 1,000 ppm in 1 ppm increments
Hydrogen Sulfide (H2S): 0.0 to 200.0 ppm in 0.1 ppm increments
Nitrogen Dioxide (NO2): 0.0 to 150.0 ppm in 0.1 ppm increments
Sulfur Dioxide (SO2): 0.0 to 150.0 ppm in 0.1 ppm increments
Battery Pack 3.6 V Primary lithium-thionyl chloride (Li-SOCl2), 1.5AH, 2/3AA, replaceable, non-rechargeable
IP66; IP67
-40°C TO +50°C (-40°F TO +122°F)
ATEX Ex ia I Ma
Ex ia IIC T4 Ga
Equipment Group and Category: I M1 and II 1G
IECEx Ex ia I Ma
Ex ia IIC T4 Ga
UL (C-US) Class I, Groups A, B, C, and D; Class II, Groups E, F, and G; T4; Exia
Class I, Zone 0, AEx ia IIC T4
-20°C TO +50°C (-4°F TO +122°F)
CSA  Ex ia IIC; Class I, Groups A B C D; T4
China EX Ex ia IIC T4 Ga
INMETRO Ex ia IIC T4; Zone 0
MSHA Permissible Gas Monitor
China MA Safety Certificate of Approval for Mining Products


Workplace health and safety
Oil and gas utilities