DESCRIPTION :
The replacement 4-series catalytic bead combustible LEL sensor for the Ventis® MX4 can read in % LEL or CH4 %VOL. If in % LEL, the sensor has a measuring range of 0-100% LEL with a 1% resolution. If in the CH4 %VOL mode, it has a measuring range of 0-5% with a 0.01% resolution and must be calibrated with methane.