Senscient ELDS™ - Open Path Gas Detector

The Senscient ELDS laser-based open path gas detector from MSA is offered for a wide range of poisonous and flammable gases. The Senscient ELDS uses 'SimuGas' self-testing to eliminate the need for employees to enter risky areas for gas checks. Nuisance false alarms are virtually removed with its innovative Harmonic Fingerprint processing.


  • Gases detected: hydrogen sulfide (H2S), methane (CH4), sour gas (H2S/CH4), ethylene (C2H4), carbon dioxide (CO2), hydrogen chloride (HCl), hydrogen fluoride (HF), ammonia (NH3)
  • Gas-specific Harmonic Fingerprint detection eliminates false alarms and prevents plant shutdowns
  • Tunable lasers scan more narrow portion of spectrum where water interference from weather conditions are minimized
  • SimuGas automated function checks are recorded daily and eliminate the need for manual intervention
  • Bluetooth wireless technology and SITE software streamlines diagnostics, commissioning and event log retrieval
  • Senscient ELDS lasers are hard on rain, fog and snow but are easy on the eyes with a Class 1 eye-safe designation
  • No expensive communication cable needed between transmitter and receiver
  • Quickest responding device for safety critical ventilation zone and cross duct applications
  • Considerably improves the efficiency, safety and operational costs of user’s gas detection program

Markets: Industrial, Oil and Gas, Utilities

Applications: Food Processes, painting, welding, toxic detection, perimeter monitoring, combustible detection


  • ATEX
  • IECEx
  • InMetro
  • CSA/UL

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