Gas Detection and Alarm Systems

Gas Detector with Display 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
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.)
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 IIC 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)
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 dixide
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°

Connectable Alarm Units

UV-810(Multi-point)、V3 typeMNV-100M(One-point)

Approvals

ATEX_logo     CE_logo     プリント

 

Type Approved by IECEx and TIIS Explosion-proof certification

SIL2 certified (KD-12B)

IP65 rating

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