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Bộ điều khiển xác định hàm lượng khí
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Bộ điều khiển xác định hàm lượng khí

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Gas detection should not be complicated. The Beaconª 800 is gas detection simplified.

The Beaconª 800 is a versatile, low cost fixed system controller for one to eight points of gas detection. It is microprocessor controlled and is capable of accepting up to 8 separate 4-20 mA sensor transmitters which can be either 2 or 3 wire. The Beaconª 800 can be powered by either 24 VDC, or 85-264 VAC. It is simple to operate and comes complete with a wall mount installation kit.

The 2 large digital displays have backlighting and easily identify both the gas type and the gas concentration for all 8 channels simultaneously. The Beaconª 800 is housed in a NEMA 4X rated case for a weather tight seal. This case design complies with lock out / tag out standards and can be fully secured. An external reset switch allows alarms to be silenced from outside the controller housing. The bottom mounted wiring hubs allow for easy wiring.

With 3 amp rated relays, the Beaconª 800 can be wired directly to a variety of devices like alarm horns, buzzers, or lights. This eliminates the need for costly external relays from the controller to devices. RKI offers the industry's widest selection of standard and toxic gas detection sensors, which can be utilized with the Beaconª 800, providing gas monitoring protection for almost any application.


  • Capable of up to 8 separate channels
  • Digital display of all 8 channels simultaneously
  • Compact, weatherproof, NEMA 4X enclosure
  • 85 to 264 VAC or 24 VDC operation
  • Long life sensors (2+ years typical)
  • Accepts any 4-20 mA transmitter
  • Audible alarm with reset button
  • Two programmable alarm levels per channel
  • Common alarm and fail relays
  • Relay rating 3 amps, form C
  • Low cost versatile solution


  • Petrochemical plants
  • Refineries
  • Water & wastewater treatment pants
  • Pulp & paper mills
  • Gas, telephone, & electric utilities
  • Parking garages
  • Manufacturing facilities
  • Steel
  • Automotive
  • HVAC



Dimensions Height: 12.5" 318 mm
Width 11.0" 279 mm
Depth 6.4" 163 mm
Enclosure Wall mounting grey polycarbonate with hinged cover.
3/4" NPT conduit hubs, 4 provided for sensors, power and relay wiring.
Screw type terminal block, 14 gauge max.


Operating Temp 14°F to 122°F (-10°C to 50°C)
Storage Temp -4°F to 158°F (-20°C to 70°C)
0 - 100% RH
NEMA-4X enclosure, waterproof, chemical, and weather resistant.


4-20 mA Accepts any 4-20 mA transmitter (24 VDC, 2 or 3 wire). A wide variety of RKI sensors are available with4-20 mA signals. Wiring distances up to 8,000 feet.


Relays 2 relays per channel 10 amp rating, SPDT isolated contacts.

1 set of common relays:
  • 2 for gas alarm levels
  • 1 for malfunction
Relays fully programmable for:
  • Increasing or decreasing alarms
  • Latching or self reset
  • Normally energized or normally de-energized
  • Time delay for alarm on and alarm off
24 VDC 24 VDC output provided to operate sample drawing adapters.
Display 2 alphanumeric displays with backlighting. 16 characters per line; 4 lines each. All 8 channels continuously displayed.
Audible Built-in audible alarm, 94 dB steady tone, mounted on enclosure.
Visual 4 visual LED alarms on front cover for alarm indications, pilot, and malfunction.
Expansion Cards
Individual 4-20 mA (or 1 - 5 VDC) outputs
Heavy duty relay card (4 each @ 30 amps)


85-264 VAC or 24 VDC standard
Battery backup option available


CSA Certified to CSA C22.2 No. 1010 and ANSI/ISA S82.01


One year materials and workmanship.

Partial List Of Detectable Gases
Many other gases or ranges available. Contact RKI for gases or ranges not listed.
Ammonia (NH3)
0 - 75.0 ppm
Arsine (AsH3 ) 0 - 0.20 ppm
Boron Trichloride (BCl3) 0 - 15.0 ppm
Carbon Dioxide (CO2) 0 - 1.0 %
Carbon Monoxide (CO) 0 - 300 ppm
Chlorine (Cl2) 0 - 3.0 ppm
Chlorine Dioxide (ClO2) 0 - 1.00 ppm
Chlorine Trifluoride (ClF3) 0 - 1.00 ppm
Combustibles 0 -100% LEL
Diborane (B2H6) 0 - 30.0 ppm
Fluorine (F2) 0 - 6.0 ppm
Hydrogen (H2) 0 - 2000 ppm
Hydrogen Chloride (HCl) 0 - 15.0 ppm
Hydrogen Fluoride (HF) 0 - 9.0 ppm
Hydrogen Sulfide (H2S) 0 -100.0 ppm
Nitric Oxide (NO) 0 -100.0 ppm
Nitrogen Dioxide (NO2) 0 - 15.0 ppm
Nitrogen Trifluoride (NF3) 0 - 30.0 ppm
Oxygen (O2) 0 - 25.0 %
Ozone (O3) 0 - 1.0 ppm
Phosphine (PH3) 0 - 1.0 ppm
Silane (SiH4) 0 - 15.0 ppm
Sulfur Dioxide (SO2) 0 - 30.0 ppm
TEOS (Si(OC2H5)4) 0 -15/30 ppm
Specifications subject to change without notice. 
Made in the USA

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