The GDA Explosion Proof Gas Detector

The GDA fixed gasdetectors have been proven in many harduous environments, including oil and gas exploration, water treatment, chemical plants and steel mills providing the operator with total system confidence and ease of maintenance.

They are however also chosen in many other applications where reliability, dependability and lack of false alarms are valued, for example in the automotive and aerospace manufacturing sectors, on scientific and research facilities and in high-utilisation medical, civil or commercial plants.

GDA fixed gas detectors are designed for detection of explosive gases, toxic gases or oxygen. Units are available in flameproof, intrinsically safe or safe area formats for use in all environments, whatever the classification. Certified IP66, the instrument is sealed against dust and splash water. The versatile unit is the ideal solution for gas detection covering all industrial needs for a wide variety of applications.


  • Economical and Reliable, Long Life Span
  • Transmitter with or without Local Display
  • Designed for Easy Installation and Maintenance
  • Several Output Options (4-20mA, 0-10v and Modbus)
  • Wide Range of Sensors
  • IEC Certified (ExdIICT6)
  • Rugged and Reliable

Available Gases

Oxygen O2 0-30 %VOL
Carbon Monoxide CO 0-200 ppm
Hydrogen Sulphide H2S 0-500 ppm
Sulphur Dioxide SO2 0-100 ppm
Nitrogen Dioxide NO2 0-20 ppm
Hydrogen H2 0-4,000 ppm
Chlorine CL2 0-20 ppm
Hydrogen Cyanide HCN 0-20 ppm
Nitrogen Oxide NO 0-100 ppm
Hydrogen Chloride HCL 0-20 ppm
Ammonia NH3 0-200 ppm
Flammable LEL 0-100 %LEL
Methane (NDIR) CH4 0-5 %VOL