Rosemount™ 935 Open Path Combustible Gas Detector

The Rosemount 935 Open Path Combustible Gas Detector provides continuous monitoring for hydrocarbon gases, even in harsh environments where dust, fog, rain, snow or vibration can cause high amounts of obscuration. This combustible gas detector utilizes infrared technology and has long range detection up to 660 ft (200 m). Worldwide approvals for the Rosemount 935 Open Path Combustible Gas Detector include ATEX, IECEx, FM/FMC, INMETRO, TR CU, and SIL 2 (TÜV). Time Constant / Response: T90≤ 3 Seconds Sensitivity Range: 0-5 LEL.m methane and propane0-8 LEL.m ethylene Spectral Response: 2.0 - 3.0μm Temperature Range: -67 °F to +149 °F (-55 °C to +65 °C) Humidity Range: Up to 95% Non-Condensing (Withstands up to 100% RH for Short Periods) False Alarm Immunity: Not Influenced by Solar Radiation, Hydrocarbon Flames and Other External IR Radiation Sources Power Supply: 24 VDC Nominal (18-32 VDC) Heated Optics: To Eliminate Condensation and Icing on the Window Warranty: 3 Years Drift: ±7.5% of the reading or ±4% of the full scale (whichever is greater) Displacement/Misalignment: ±0.5° Detected Gas: Most hydrocarbon gases Housing Material: 316L Stainless Steel Housing Dimensions: Detector / Source 10.5" x 5.1" x 5.1" (267 x 130 x 130mm) Weight: Detector / Source 11lb (5kg)