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..

Key Features

  • 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


SpecificationImagesDocumentationProduct Enquiry



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
Lang Filetype Document Size
English Model 125 Datasheet 400kb

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