Fixed Gas Detector (Diffusion Type)
KD-12
Features
- Rugged, compact and lightweight.
- LED local display shows the gas concentration and alarm indication.
- Explosion-proof (ATEX, IECEx and TIIS approved).
- Water and dust-proof construction (IP65).
- All setup and maintenance can be performed easily on site by one person.
- The simple plug-in sensor module makes it easier.
- Infrared sensor for long-term stability and less calibration needs (KD-12R)
- SIL2 certified model is available (KD-12B-SIL).
- HART model is available (KD-12AH/BH).
Specifications
(KD-12 A/ B/ C)
| Model | KD-12A | KD-12B | KD-12C |
| Detection Principle | Hot wire semiconductor |
Catalytic combustion |
Thermal conductivity |
| Gas Detected | Combustible gas, Toxic gas | Hydrogen, Helium, Carbon dioxide |
|
| Sampling Method | Diffusion | ||
| Detection Range | As per specifications | ||
| Alarm Set Value | As per specifications | ||
| Alarm Accuracy | Combustible gas: ±25% of alarm set value Toxic gas: ±30% of alarm set value |
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| Alarm Delay | Combustible gas: within 30s at 1.6 times of alarm set value Toxic gas: within 60s at 1.6 times of alarm set value |
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| Alarms | Gas alarm: Red LED lamp flashes Trouble alarm: Yellow LED lamp flashes (sensor trouble, power voltagemalfunction, etc.) |
||
| Display | 4-digit digital LED display | ||
| Output | Gas concentration analog signal ・4-20mADC (common to the negative side of power supply) Gas alarm contact (one stage only)*1 ・1a no-voltage contact output, Non-latching ・Rated load: 0.5A at 250VAC or 0.5A at 30VDC (resistance load) |
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| Operation | At 4 points of magnetic switches | ||
| Approvals |
Ex d IIC T5 (TIIS)
II 2 G Ex db IIC T5 Gb (ATEX)
Ex db IIC T5 Gb (IECEx)
|
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| Degree of Protection | IP65 | ||
| CE marked | Complied with CE Directive 2004/108/EC | ||
| Applicable Cable | Cable out diameter: ø10-13mm 5-conductor cable*1: CVV-S 1.25mm23-conductor cable: CVV-S 2mm2 or 1.25mm2 |
||
| Operating Temperature/Humidity*2 |
-10 to +50 °C 10 to 90 %RH (0 to 50 °C) |
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| Power Supply | 24 VDC (±20%) | ||
| Power Consumption | 3W max. | ||
| Dimensions | W158 x H116 x D68 mm (excluding protrusion) | ||
| Weight | Approx. 1.2kg | ||
(KD-12 R /D /O)
| Model | KD-12R | KD-12D | KD-12O | |
| Detection Principle | NDIR (Non-dispersive infrared) |
Electrochemical cell | Galvanic cell | |
| Gas Detected | Methane, Carbon dioxide |
Carbon monoxide |
Hydrogen sulfide |
Oxygen |
| Sampling Method | Diffusion type | |||
| Detection Range | As per specifications | 0 to 100 ppm, 0 to 150 ppm, or 0 to 250 ppm*3 |
0 to 30 ppm or 0 to 50 ppm*3 |
0 to 25.0 vol% |
| Alarm Set Value | As per specifications | FS100ppm: 25ppm (recommendation) FS150/250ppm: 50ppm (recommendation) |
10ppm | 18.0vol% |
| Alarm Accuracy | ±25% of alarm set value | ±30% of alarm set value | ±1.0vol% of alarm set value |
|
| Alarm Delay | Within 30s at 1.6
times of alarm set value |
Within 60 s at 1.6 times of alarm set value |
Within 5s to reach 18vol% under conditionof 10vol%*4 |
|
| Alarms | Gas alarm: Red LED lamp flashes Trouble alarm: Yellow LED lamp flashes (sensor trouble, power voltage malfunction,etc.) |
|||
| Display | 4-digit digital LED display | |||
| Output | Gas concentration analog signal ・4-20mADC (common to the negative side of power supply) Gas alarm contact (one stage only)*1 ・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 | |||
| Approvals | Ex d IIB T5 (TIIS) II 2 G Ex db IIC T5 Gb (ATEX) Ex db IIC T5 Gb (IECEx) |
|||
| Degree of Protection | IP65 | |||
| CE marked | Complied with CE Directive 2004/108/EC | |||
| Applicable Cable | Cable out diameter: ø10-13mm 5-conductor cable*1: CVV-S 1.25mm23-conductor cable: CVV-S 2mm2 or 1.25mm2 |
|||
| Operating Temperature/Humidity*2 |
-10 to +50 °C
10 to 90 %RH (0 to 50 °C) |
-10 to +40 °C 30 to 85 %RH |
0 to +40 °C 30 to 85 %RH |
|
| Power Supply | 24VDC (±20%) | |||
| Power Consumption | 2.2W max. | 1.2W max. | ||
| Dimensions | W158 x H120 x D68 mm (excluding protrusion) | |||
| Weight | Approx. 1.3kg | |||
(KD-12B-SIL)
| Model | KD-12B-SIL |
| Detection Principle | Catalytic combustion |
| Gas Detected | Combustible gas, Toxic gas |
| Sampling Method | Diffusion |
| Detection Range | As per specifications |
| Alarm Set Value | As per specifications |
| Alarm Accuracy | Combustible gas: ±25% of alarm set value Toxic gas: ±30% of alarm set value |
| Alarm Delay | Combustible gas: within 30s at 1.6 times of alarm set value Toxic gas: within 60s at 1.6 times of alarm set value |
| Alarms | Gas alarm: Red LED lamp flashes Trouble alarm: Yellow LED lamp flashes (sensor trouble, power voltagemalfunction etc.) |
| Output | Gas concentration analog signal ・4-20mADC (common to the negative side of power supply) Gas alarm contact (one stage only)*1 ・1a no-voltage contact output, Non-latching ・Rated load: 0.5A at 250VAC or 0.5A at 30VDC (resistance load) |
| Display | 4-digit digital LED display |
| Operation | At 4 points of magnetic switches |
| Approvals | Ex d IIC T5 (TIIS)
II 2 G Ex db IIC T5 Gb (ATEX)
Ex db IIC T5 Gb (IECEx)
|
| Degree of Protection | IP65 |
| Functional Safety | ・SIL2 capable ・Hardware Fault Tolerance: zero (0) ・Applicable standards: IEC 61508-2, EN 61508-2 and JIS C 0508-2 |
| Applicable Cabel | Cable out diameter: ø10-13mm 5-conductor cable*1: CVV-S 1.25mm2 3-conductor cable: CVV-S 2mm2 or 1.25mm2 |
| Operation Temperature /Humidity |
-10 to＋50 °C 10 to 90 %RH (0 to 50 °C) |
| Power Supply | 24 VDC (±20%) |
| Power Consumption | 3W max. |
| Dimensions | W158 x H116 x D68 mm (excluding protrusion) |
| Weight | Approx. 1.2kg |
(KD-12AH/BH)
| Model | KD-12AH | KD-12BH |
| Detection Principle | Hot wire semiconductor | Catalytic combustion |
| Gas Detected | Combustible gas | |
| Sampling Method | Diffusion | |
| Detection Range | As per specifications | |
| Alarm Set Value | As per specifications | |
| Alarm Accuracy | ±25% of alarm set value | |
| Alarm Delay | Within 30s at 1.6 times of alarm set value | |
| Alarms | Gas alarm: Red LED lamp flashes Trouble alarm: Yellow LED lamp flashes (sensor trouble, power voltagemalfunction, etc.) |
|
| Display | 4-digit digital LED display | |
| Output | Gas concentration analog signal and HART signal ・4-20mADC(common negarive with power supply) ・Wired HART signal (superimposed over 4-20mA signal), Protocol Rev. 7.5 Gas alarm contact (1st stage only)*1 ・1a non-voltage, Latching (standard) or non-latching |
|
| Approvals |
II 2 G Ex db IIC T5 Gb (ATEX)
Ex db IIC T5 Gb (IECEx)
|
|
| Degree of Protection | IP65 | |
| CE marked | Complied with CE Directive 2004/108/EC | |
| Applicable Cable | Cable out diameter: ø10-13mm 5-conductor cable*1: CVV-S 1.25mm23-conductor cable: CVV-S 2mm2 or 1.25mm2 |
|
| Operating Temperature/Humidity*2 | -10 to +50 °C 10 to 90 %RH (0 to 50 °C) |
|
| Power Supply | 24 VDC (±20%) | |
| Power Consumption | 3W max. | |
| Dimensions | W127 x H116 x D68 mm (excluding protrusion) | |
| Weight | Approx. 1.2kg | |
*1 Screwless type only
*2 No radical temperature or humidity changes and no condensing
*3 Specify when purchasing
*4 Under the condition of 20 ±2 C°
Approvals
Connectable Alarm Units
UV-810 (Multi Point), V3 Series, NV-120 Series