24/7 Technical Support
TMX412 Gas Monitor Industrial Scientific Corporation Get Quote



Ideal for any environment requiring reliable multi-gas monitoring, the TMX412 is one of Industrial Scientific's most rugged and easy to use instruments. The TMX412 simultaneously monitors four gases: combustible gases, oxygen, carbon monoxide and hydrogen sulfide, and displays instantaneous readings on the LCD display. On-board datalogging with a real-time clock calculates and records STEL and TWA readings, with a storage capacity of up to 110 hours. The unit has both audio and visual alarms. RFI protected. A motorized sampling pump is standard with the rental unit. Optional rental accessories include datalogging software and cable and a vibrating alarm.

Key Features

  • \r
  • Intrinsically safe.\r
  • Peak performance in harsh working environments.

Technical Specifications

Measuring Ranges Combustible gases: 0 to 100% LEL in 1% increments Oxygen: 0 to 30% of volume in 0.1% increments Carbon Monoxide: 0 to 999 ppm in 1 ppm increments Hydrogen Sulfide: 0 to 999 ppm in 1 ppm increments
Approvals UL and CSA: Class I, Groups A, B, C and D MSHA: Intrinsically safe for methane/air mixtures only Australia: EEx ia d IIC T4
Power Rechargeable Ni-Cd battery pack, 10 hours operation


  US Metric
Dimensions 4.75 x 2.75" x 2"" 120 x 70 x 50 mm


  US Metric
Weight 1.62 lbs 0.737 kg