MSA PrimaX® IR Gas Transmitter


Every feature of the PrimaX IR Gas Transmitter is designed with reliability in mind to withstand the most challenging environmental conditions throughout the product’s life. 



MSA’s PrimaX IR Gas Transmitter offers LEL (Lower Explosive Limit) combustible gas detection through a patented PrimaX Gas Transmitter IR dual source design. A redundant IR source provides reliability and uninterrupted monitoring should a source failure occur. Furthermore, the possibility of obscurations due to rain, fog, dirt, dust, and other environmental conditions is minimized due to dual source design.


  • Dual source design provides redundancy and reliable, uninterrupted performance
  • Environmental guard sensor housing for fast, efficient response time
  • Heated optics prevent condensation buildup
  • 4–20 mA analog output
  • User-friendly setup, calibration diagnostics, and maintenance via HART digital communication
  • One-person calibration is easily performed using calibration cap
  • Easy connection using stainless steel junction box
  • SIL 2 design provides safety system integration capability
  • 316 stainless steel, IP 67-rated, rugged housing protects unit from environmental extremes
  • Factory-calibrated for fast commissioning

More Information

More Information
Temperature Range -50 °C tot +80 °C (-58 °F tot +176 °F)
Repeatability ±1 % full-scale
Humidity 0%-95% RH, non-condensing
Power input 18–32 VDC, 5 watts (–50 °C to +80 °C)
Ingress Protection IP67
Weight 1.5 kg
Signal output 4–20 mA, 3-wire current source with HART protocol
HART Compatibility with HART 7.0
Safety Integrity Level SIL 2