VQ549ZD

VQ549ZD is a VQ500 series catalytic combustible gas sensor. It is a miniature, fully certified, flameproof sensor heads containing a high quality, low power pellistor pair optimized for the detection of combustible gases or % volume gases in thermal conductivity mode. It has an outline identical to modern miniature electrochemical cells and is ideally suited for use in portable instruments. Specific sensor this is able to detect most combustible gases and vapors and ammonia at LEL levels. The thermal conductivity version will detect most gases at % volume concentrations which have thermal conductivities different from that of air.

• 4.25 ±0.1VDC operating voltage, 50 to 60mA sensor current
• 30mV/%Vol min sensitivity (1% methane), ±20mV offset typ
• Silicones and H2S poison resistance
• Optimized for combustible gases and vapors, certified explosion proof component
• Integral pellistors, low power, standard miniature body size
• Poison resistant silicones and hydrogen sulfide
• Shock resistant, ATEX certified, IECEx certified, CSA certified, UL recognized
• 135 to 230mW supply power range
• 12 months warranty period
• Operating temperature rated between -40 to +55°C