Simple Multi-point Type Gas Alarm System B-770
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-
- Model
- B-770
- Gas Detected
- LPG or Town gas
- Detection Principle
- Catalytic combustion, Hot wire semiconductor
- Detection Range
- 1/100 to 1/4 of LEL (1%LEL to 25%LEL)
Simple multi-point type (Max. 3 points) gas alarm system for LPG or City gas.
Features
- Simple multi-point type (max. 3 points) gas alarm system for LPG or Town gas.
- Affordable, compact and easy to operate.
- Easy installation and maintenance.
- Pre-calibrated smart sensor for immediate installation.
- Several type of connectable gas detectors to match your installation site.
- Variety of signals outputs to meet customers needs.
- Built-in self-diagnostic function.
Specifications
(Alarm Unit)
| Model | B-770 |
| Alarm Indication | Flashing red lamp (illuminated after alarm shut-off), alarm sound, non-latching
(can be set to latching using DIP switch) |
| Alarm Volume | 70 dB/m min. |
| Alarm Shut-off | By pressing a button |
| Malfunction Indication | Flashing yellow lamp |
| Display of alarm unit
operation |
Illuminated green lamp |
| Power Source | 100 VAC to 220 VAC, 50/60 Hz (Terminal block type) |
| Power consumption | Approx. 5W when monitoring (max.) Approx. 10W during alarm (max.) |
| External output | 1) 2-stage voltage (6 VDC when monitoring, 12 VDC during alarm, 0 V during error) 2) 100 VAC to 220 VAC during alarm, 1A max. (35-second output delay,can be changed to immediate output with DIP switch)3) 1a, 1b contacts 220 VAC, 1A max., or 2 4VDC, 1A max. (35-second outputdelay, can be changed to immediate output with DIP switch) |
| Operation Temperature Range |
-10 to +40 °C |
| Dimensions | W138 x H230 x D45 mm |
| Weight | Approx. 480g |
| Accessories | Inspection gas, Mounting plate, Wood screws, Crimp terminals, Hex wrench |
(Detectors)
| Model | KD-5GM | KD-5G | GD-1B |
| Detection Principle | Catalytic combusion type (energy-saving type) | ||
| Gas Detected | Town gas | LPG | LPG |
| Gas Concentration fo alarm | 1/100 to 1/4 of LEL (1%LEL to 25%LEL) | ||
| Response time | 1 minute max. | ||
| Power Source | 24 VDC ±20% (Supplioed from the B-770) | ||
| Maximum Loop Length | 500m max. (CVV 1.25mm2, 3-conductor cable) | 200m max. (using
0.5mm2, 3-conductor cable) |
|
| Sampling Method | Diffusion | ||
| Explosion-proof Structure | d2G4 | – | |
| Operating Temperature Range | -10 to +60 °C | -10 to +45 °C | |
| Dimensions
(excluding protrusions) |
W94 x H141 x D123 mm | W43 x H116 x D37 mm | |
| Weight | Approx. 1.5kg | Approx. 220g | |
| Mounting method | Screws | Mounting plate and bands | |
| Accessories | Stand, Rain cap, Rain cover, Screws, Curled plugs,
Crimp terminals |
Mounting plate, Wood
screws, Bands, Connectors, Curled plugs, |
|
