Sulphur Dioxide Gas Detector - Explosion Proof Version S3004SD
(SO2) Sulphur Dioxide Gas Detector, Sulfur dioxide Gas Detector, Sulfurous anhydride Gas Detector 0-20 ppm 4-20mA - Intrinsically Safe Electrochemical Cell - SMART3G-C2 Sensitron Explosion Proof Enclosure version Zone 1 category 2 areas S3004SD