IR400 - Infrared Point Detector for Combustible Gas Detection

The IR400 Infrared (IR) Point Detector from MSA is a hydrocarbon gas detector that constantly monitors combustible gases and vapors within the lower explosive limit (LEL) and delivers alarm indication. It offers an industry-leading response time of three seconds, even with a splash guard installed.

The electronics are held within an explosion-proof housing so that the IR400's detector information can be processed locally. Configurations with Modbus, analog output and HART are also available.


  • Industry-leading speed and response: T90 ≤ 3 seconds even with splash guard installed
  • Industry standard 4-20 mA output offers remote alarm and fault indication
  • No regular calibration required thus decreasing maintenance costs
  • Heated optics eliminate condensation
  • Dirty optics indication discriminates between true fault and cleaning necessities
  • Multiple communication outputs provide full status and control capability in the control room
  • Rapid calibration times decrease amount of cal gas needed which lowers maintenance time and costs



  • ATEX
  • CSA
  • CE
  • SIL
  • FM
  • FM (Canada)
  • IECEx
  • DNV GL
  • MED

Other Equipment by this Supplier

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.