| Model |
PD-12A |
PD-12B |
PD-12C |
| Detection Principle |
Hot wire semiconductor |
Catalytic combustion |
Thermal conductivity |
| Gas Detected |
As per specifications |
| Sampling Method |
As per specifications |
| Suction Flow |
Over 0.5L/min |
| Detection Range |
As per specifications |
| Alarm Set Value |
As per specifications |
| Alarm Accuracy |
Combustible gas: ±25% of alarm set value under identical conditions
Toxic gas: ±30% of alarm set value under identical conditions |
| Alarm Delay |
Combustible gas: Within 30 seconds with 1.6 times of alarm set conditions
Toxic gas: Within 60 seconds with 1.6 times of alarm set concentration |
| Alarms |
Gas alarm: Red LED lamp flashes
Trouble alarm: Yellow LED lamp flashes (sensor disconnection, sensor zero drop,power supply voltage error, etc.) |
| Display |
Four-digit digital LED display |
| Output |
Gas concentration analog signal
・4-20mADC (common to the negative side of power supply)
Gas alarm contact or failure contact*1 (one stage only)
・1a no-voltage contact output, Non-latching
・Rated load: 0.5A at 250VAC or 0.5A at 30VDC (resistance load) |
| Operation |
At 4 points of magnetic switches |
| Explosion-proof |
II 2G Ex d IIB + H2 T4 Gb (ATEX)*2
Ex d IIB + H2 T4 X (TIIS)
|
| Degree of Protection |
IP65 |
| Applicable Cable |
Cable outer diameter: 10.5mm to 14.5mm
6-conductor shielded cable: CVV-S 1.25mm2 or 2.0mm2 |
Operating
Temperature/Humidity*3 |
-10 to +50 °C
10 to 90 %RH (0 to 50 °C) |
| Power Supply |
24 VDC (±20%) |