Some Honeywell BW gas detectors are equipped on a standard basis with SR-W04 combustible sensors. One combustible replacement sensor listed includes a heavy duty silicone filter, that makes it ideal for use in environments that have known sources of silicone or vapors containing silicon. The SR-W04 silicone filter equipped sensor should not be used when monitoring diesel, kerosene, jet fuel, or other heavy hydrocarbon vapors with flashpoint temperatures above 38°C (100°F).
