Explosive Gas Monitor

  • Explosive gas monitor
  • Detects explosive hydrocarbon vapors
  • Quickly shuts down equipment for worksite safety
  • Alerts personnel of danger


Designed to detect explosive hydrocarbon vapors and quickly shut down equipment for worksite safety. Alerts personnel of danger; ideal for mobile equipment fleets. Units available in Fairbanks for demonstration.

Features & benefits

  • Gas sensor detection levels continuously displayed
  • User-friendly push buttons and LCD menus
  • Provides an automatic zero drift correction feature
  • Non-intrusive calibration via magnetic wand
  • 2 Fully programmable 5 amp alarm relays and fail relay
  • Tested to withstand temperatures of -40F to 122F in all weather
  • Sensor construction rated Class I, Div. 1 groups B, C, D for flammables
  • UL listed
  • Explosion proof construction
  • Easy installation
  • Comes standard with emergency shutdown feature


  • Multiple available sensors (see below)
  • Strobe light installation
  • Siren installation
  • Calibration kits

Available sensors

  • LEL, H2S, CO, PPM HC, and CO2
  • Toxic gases: NH3, SO2, HCN, and more



Sensor Infrared
Measuring range 0 - 100% LEL
Resolution 1% LEL lower
Detectable limit (LDL) 2% of full scale
Response time (T-90) 30 seconds or less
Life expectancy 5+ years with normal service
Accuracy ± 5% of reading or ± 2% of full scale (whichever is greater)
Weather resistant Patented water repellent sensor coating
Alarm option
Alarm settings 2 Fully programmable alarm set points; increasing or decreasing, latching or self-resetting, on delays, off delays, normally energized or de-energized
Alarm indication Visual LEDs

5A Form 'C' contacts for alarms one, two, and fail

Dimensions (W x H x D)

8.5 x 5.2 x 4.5 in

215 x 132 x 114 mm


Alphanumeric display with backlighting.

2 lines for gas concentration readout, user-friendly calibration, and set-up

8 Characters per line

Enclosure Explosion proof for Class I, Div 1, Groups B, C, D
Enclosure rating NEMA 4X, explosion proof, watertight, cast aluminum with o-ring seal and epoxy powder coating
Controls Magnet used for calibration funtions. Calibrates without opening the housing. Internal push-button controls are also available for calibration and set-up
Operating environment
Factory tested -40°F to 122°F
Location Indoor or outdoor. Explosions proof for Class I, Div 1, Groups B, C, D
Operating voltage
19 VDC - 30 VDC, 12 VOC versions available
Analog 4-20 mA signal, into 500 ohms impedance max, corresponding to 0 - full scale
Digital Modbus RTU output standard, fully configurable, 2-wire RS-485, 1200 to 19.2k baud

Compatible with all RKI Beacon controllers, as well as most DCS/PLC systems:

Beacon 110, Beacon 200, Beacon 410, Beacon 800, and Pioneer 4W and Pioneer 16R


One year material and workmanship