Model 125 - Explosion-Proof Smoke Monitor



In the event of a fire in a building or other structure, such as an oil rig, Health and Safety regulations require that immediate action be taken to prevent the ingress of smoke and fume into air-conditioning and ventilation ducts. The Model 125 explosion-proof smoke monitor is specifically designed to be mounted in ventilation ducts and to comply with strict regulations that require rapid activation of smoke-damping equipment to minimise risk to human life. The equipment is constructed and tested to EExd IIB T5 standards enabling it to operate in hazardous areas.

  • high accuracy & stability maintained over long periods
  • modular construction ensures simple installation & low cable requirements
  • rugged units, fully sealed to IP65, designed for very high availability with minimal maintenance requirements
  • designed to withstand the harshest environments

  • Measuring Species: Opacity
  • Measuring units: 0-100% Opacity
  • Measurement Technique: single-pass transmissometer
  • Operating Temperature: -5oC to +40oC
  • Power requirements: 18 to 35V
  • Construction: IP 65
  • Analogue Output: 4 to 20 mA current loop output
  • Alarm Conditions: 3300Ω – normal
  • open circuit – fault
  • 660-820Ω – alarm
  • Serial Data: RS232 port for CODEL commissioning

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