Trigard Gas Monitor - Stand Alone Detector

Designed to meet a variety of demanding applications, from wastewater facilities, to light industry and commercial applications, the Trigard Gas Monitor features MSA’s precision craftsmanship and detects chlorine, sulfur dioxide and other toxic and combustible gases. The adjustable-range unit also detects oxygen  deficiency and enrichment.

AC or DC powered, the system features a highly visible LCD screen and simple push-button calibration. Boasting sturdy NEMA 4X design and a single board, the unit offers multiple sensor mounting options.

Patented sensor disconnect under power feature allows all sensors to be replaced in hazardous areas without area declassification, while interchangeable smart sensors are pre-calibrated for installation right out of the box.


Precision Safety is a supplier of a wide range of Fixed Gas Detection or Permanent Installed Detectors in Australia and New Zealand. We supply stand-alone detectors and monitors as well as gas detection controllers integrated into plant PLC and control systems.


Trigard Gas Monitor - Flexible and Range of Smart Sensors

The Trigard is available as a single sensor or up to three sensors connected to the single Trigard Monitor. The smart sensors can be connected direct on the Trigard Monitor, or remote mounted up to 30 meters from the display using remote sensor junction boxes.

Sensor options include any three combinations.


Detectable Gases with the MSA Trigard Gas Monitor

  •  Ammonia 0-100 ppm
  •  Ammonia 0-1000 ppm
  • Carbon Monoxide 0-100 ppm
  • Carbon Monoxide 0-500 ppm
  •  Carbon Monoxide 0-1000 ppm
  • Oxygen 0-10%
  • Oxygen 0-25%
  • Hydrogen Sulfide 0-10 ppm
  • Hydrogen Sulfide 0-50 ppm
  • Hydrogen Sulfide 0-100 ppm
  • Chlorine 0-5 ppm
  • Chlorine 0-10 ppm
  • Chlorine 0-20 ppm
  • Nitric Oxide 1-100 ppm
  • Hydrogen Cyanide 0-50 ppm
  • Hydrogen Chloride 0-50 ppm
  • Chlorine Dioxide 0-3 ppm
  • Hydrogen Sulfide 0-500 ppm
  • Comb. Gas 0-100% LEL – Natural Gas & H2
  • Comb. Gas 0-100% LEL – Petroleum Vapors
  • Combustible Gas 0-100% LEL – Solvents
  • IR Combustible 0-100% LEL – Methane
  • IR Combustible 0-100% LEL – Propane
  • Phosphine 0-2 ppm
  • Diborane 0-50 ppm
  • Bromine 0-5 ppm
  • Fluorine 0-5 ppm
  • Hydrogen 0-1000 ppm
  • Ethylene Oxide 0-10 ppm
  • Solvent & CO2 Tolerant Oxygen
  • Low Oxygen
  • Low Solvent Tolerant Oxygen
  • Sulfur Dioxide 0-25 ppm
  • Sulfur Dioxide 0-100 ppm
  • Nitrogen Dioxide 0-10 ppm

Features of the Trigard Gas Monitor

  • Operates in diffusion mode, with factory-calibrated sensors ready to perform immediately after installation
  • Available for remote sensing applications, where installation requires the sensor to be separated from the electronics
  • Can operate on a completely stand-alone basis with its large LCD display, optional quick-check LEDs and four relay outputs
    (three alarm and one fault), or can be connected with a 4-20 mA or MODBUS RTU output to a control system (PLC, DCS, etc.)
  • Patented sensor change-out feature eliminates the need to declassify a hazardous area
  • Pre-calibrated sensor modules are ready for installation out of the box
  • Sensors can be replaced in the field without the use of tools. The unit quickly recognizes the new sensor type and reconfigures alarm
    and relay settings to optimize the new sensor

Trigard Gas Monitor is a Stand Alone Monitor and complete with Battery Backup

Trigard Gas Monitor
MSA Trigard Gas Monitor Brochure

Download the brochure direct from MSA’s website

Contact us

1300 189 146

Australia & New Zealand