Model | KD-12 |
Corresponding Sensor Type | Hotwire semiconductor type (KD-12A) or Catalytic combustion type (KD-12B) |
Sampling Method | Diffusion |
Alarm Accuracy | - Combustible gas: ±25% of Alarm Set Value
- Toxic gas: ±30% of Alarm Set Value
|
Alarm Delay | - Combustible gas: 30s or less at 160% concentration of an Alarm Set Value
- Toxic gas: 60s or less at 160% concentration of an Alarm Set Value
|
Warning Display | - Gas alarm (1 st stage only)
- Red lamp flashes
- Trouble alarm (sensor breaking, sensor zero drop, power supply voltage error, etc.) Yellow lamp flashes
|
External Output | - Gas concentration analog signal (direct linear reading of concentration)
- 4 to 20 mA DC (common to the negative side of power supply)
- 0.9 mA or less at Trouble alarm
- The load resistance of analog signal is to be less than 300 including interconnection resistance Gas alarm contact (1 st stage only)
- 1 a non-voltage relay contact / Non-latching
- Rated load: 0.5 A at 250V AC or 0.5 A at 30V DC (resistance load)
|
Gas Concentration Display | Four-digit digital LED display (direct linear reading of concentration) |
Operation | At 4 points of magnetic switches |
Cable Connection | Screw-less terminal blocks |
Explosion-proof | Ex d IIC T5 (Japan TIIS), Ex d 110 T6 (China Explosion-proof Inspection) |
Degree of protection | IP65 (internal instrument) |
CE Marked | Complied with CE Directive 89/336/EEC, 92/31/EEC. 93/68/EEC |