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Rosemount-935 Open Path Combustible Gas Detector

Rosemount™ 935 Open Path Combustible Gas Detector

Product Description

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).

Specifications

Time Constant / Response
T90≤ 3 Seconds
Sensitivity Range
0-5 LEL.m methane and propane
0-8 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)

Features

  • Accurate, high speed response time (< 3 seconds)
  • High immunity to false alarms
  • Heated optics for use in extreme environments
  • Built-in data logger (records up to 100 events)
  • Real time diagnostics
  • Reduced cross sensitivity
  • Factory calibrated gas settings for greater accuracy

Documents & Drawings