Simplified Gas Alarm Systems

B-780

Features

  • The B-780 works with three detector models suitable for different applications.
  • Gas alarm will be noticed with red LED blinks and beeping sound
  • Fault alarm will be notified with amber LED blinks and beeping sound
  • Alarm unit is wall-mounted and easy to install
  • power supply is 100/220 VAC and is connected to a standard AC outlet.
  • Compact and lightweight
  • there are types of external outputs, which can be output to an external alarm device, emergency shutoff interlocking system, etc.
  • Operation check can be done easily with TEST button

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Specifications

(ALARM)

Model B-780
Target Gas LPG Methane
Number of Connected Detectors Up to 3 Units
Detectors to be Connected KD-5G, KD-5T, GD-1B KD-5GM, KD-5M
Gas Alarm ・Red ALARM LED blinks
・Beeping sound, 80 dB/m or higher
・Selectable to auto resetting or manual resetting
Fault Alarm Amber FAULT LED blinks
Power Supply 100/220 VAC±10%, 50/60Hz
Power Consumption Approx. 5 W during normal operation (max.)
Approx. 10 W during gas alarm (max.)
External Outputs (1) 6 VDC, 10 mA during nomal operation, 12 VDC, 10 mA during gas alarm, and 0 VDC during fault alarm
(2) 100/220 VAC, 1 A max. during gas alarm

(output delay time is approx. 35 sec., which can be changed to zero (no delay) by DIP switch setting), Replaceable fuse
(3) NO/NC contact 24 VDC, 1 A max. (output delay is approx. 35 sec., which can be changed to zero (no delay) by DIP switch setting)
Operating Temperature -10°C to +40°C (No condensation)
Dimensions W138 × H180 × D33 mm (Excluding protrusions)
Mass Approx. 420 g
Accessories Screws x 2, Crimp terminals x 10

 

(DETECTOR)

Model KD-5G KD-5GM KD-5T KD-5M GD-1B
Detection Principle Catalytic combustion Hotwire semiconductor Catalytic combustion
Target Gas LPG Methane LPG Methane LPG
Alarm Set Value 1/100 to 1/4 %LEL
Response Time 30 sec. or less 1 min. or less 30 sec. or less 1 min. or less 30 sec. or less
Power Supply 24 VDC±20%
Current Consumption 30 mA or less at 24 V
Structure Explosion-proof (d2G4) Weather-resistant ―
Cable Length Up to 500 m (CVV, 1.25 mm2, 3-core cable) Up to 200m
(0.5mm2, 3-core cable)
Operating Temperature -10℃ to +60℃ -10℃ to +50℃ -10℃ to +40℃
Dimensions W94 x H141 x D123 ㎜ (Excluding protrusions) W52 x H116 x D37 ㎜
Mass Approx. 1,500 g Approx. 220 g
Mounting Method By screws By installation plate or band
Accessories Stand, rainproof cap, rainproof cover, screws, screw expansion plugs, crimp terminals Installation plate, wood screws, band, connectors, screw expansion plugs, crimp terminals
DATA SHEET