35-3001-06H-DIL Hydrogen/Oxygen Sample-Draw Detector • 7
O-ring at the bottom of the flow block seals the sensor. The sensor housing includes a sintered
metal flame arrestor on one end that allows gas to diffuse into the sensor. The sensor has a built in
molecular sieve that only allows hydrogen to diffuse into the detector. On the other end, five pins
extend from the sensor and plug into the socket connector. The connector allows you to replace the
sensor without disconnecting the wiring. Four leads extending from the connector allow you to
connect the hydrogen sensor to the main circuit board.
Pump
The pump is mounted to the right side of the main circuit board. The pump pulls the gas sample
into the sample-draw detector. The pump operates on 24 VAC, which is generated from the 24
VDC supplied by the controller.
