Draeger catalytic sensors are used for combustible gases and organic gases, Draeger has a patented catalytic sensor technology that uses two coated beads versus the single coated bead and a reference bead that all competitors use.
The dual coated bead technology results in much faster response times, much less drift, and much lower maintenance requirements. The sensors only need to be calibrated every six months, and they don’t drift in between. Draeger also has a patented mesh flame arrestor, all other catalytic sensors use a flame arrestor that’s much thicker.
The Draeger wire mesh flame arrestor is .8 millimeter. The flame arrestor competitors use vary from .25 to .3 millimeter, 4 times as thick as the wire mesh flame arrestor. The thinner flame arrestor allows molecules of gas to get to the sensor much more quickly, and resulting in much faster reaction times.