• Worldwide Safety Devices

Gas Detectors

Worldwide Safety Devices offers a Gas Detector. It is a flame proof and weather proof gas detector for chlorine with gas alarm systems, based on electrochemical method. Features: compact and lightweight; easy maintenance; quick-fit sensor replacement, explosion proof; and high accuracy. Detection principle: the sensor is of two-electrode (controlled potential electrolysis) type operating under diffusion-controlled conditions. The gas molecule diffuses through a membrane and is absorbed on a polarisable electro catalytic working electrode, where the electrochemically oxidised or reduced at an appropriate electrode potential. This electrochemical reaction results in an electric current, which under the diffusion limitations is directly proportional to the gas concentration. The electric current is amplified and indicated on a direct reading meter in PPM. The mounting of gas sensor with hole on JB [JB only approved by CMRI) is suitable for Group IIA & IIB] with proper separate flame path having gas sensors made of brass construction plotted/hermetically sealed within the brass housing of cylindrical shape involves no free space for accumulation for any flammable gas/vapours rendering the enclosure safe as flameproof FLP/WP. Gas detector in cast aluminium alloy LM-6 is good for outdoor installations endless neoprene rubber gasket is placed over the flange outside the effective flame path for IP-55 ingress projection .The external cable entry certified double compression type cable gland size 3/4" BSP.