KD-12 Series

Diffusion Type Gas Detector Head with Display

Features
Features
  • āļāļēāļĢāļ­āļ­āļāđāļšāļšāļ—āļĩāđˆāļ—āļ™āļ—āļēāļ™āđāļĨāļ°āļāļ°āļ—āļąāļ”āļĢāļąāļ” : āļ•āļąāļ§āđ€āļ„āļĢāļ·āđˆāļ­āļ‡āļ—āļģāļˆāļēāļāļ­āļ°āļĨāļđāļĄāļīāđ€āļ™āļĩāļĒāļĄ āļĄāļĩāļ™āđ‰āļģāļŦāļ™āļąāļāđ€āļšāļēāđāļĨāļ°āļ‚āļ™āļēāļ”āļāļ°āļ—āļąāļ”āļĢāļąāļ” āđ€āļŦāļĄāļēāļ°āļŠāļģāļŦāļĢāļąāļšāļāļēāļĢāļ•āļīāļ”āļ•āļąāđ‰āļ‡āđƒāļ™āļžāļ·āđ‰āļ™āļ—āļĩāđˆāļˆāļģāļāļąāļ”
  • āļŦāļ™āđ‰āļēāļˆāļ­ LED : āđāļŠāļ”āļ‡āļ„āđˆāļēāļ„āļ§āļēāļĄāđ€āļ‚āđ‰āļĄāļ‚āđ‰āļ™āļ‚āļ­āļ‡āđāļāđŠāļŠāđāļĨāļ°āļŠāļ–āļēāļ™āļ°āđāļˆāđ‰āļ‡āđ€āļ•āļ·āļ­āļ™āļ­āļĒāđˆāļēāļ‡āļŠāļąāļ”āđ€āļˆāļ™ āđāļĄāđ‰āđƒāļ™āļ—āļĩāđˆāļĄāļ·āļ”
  • āļĢāļ­āļ‡āļĢāļąāļšāđāļāđŠāļŠāļŦāļĨāļēāļāļŦāļĨāļēāļĒāļ›āļĢāļ°āđ€āļ āļ— : āļĄāļĩāļĢāļļāđˆāļ™āļŠāļģāļŦāļĢāļąāļšāļ•āļĢāļ§āļˆāļˆāļąāļšāđāļāđŠāļŠāļ•āļīāļ”āđ„āļŸ āđāļāđŠāļŠāļžāļīāļĐ āļ­āļ­āļāļ‹āļīāđ€āļˆāļ™ āđāļĨāļ°āđāļāđŠāļŠāļ­āļ·āđˆāļ™āđ†
  • āļāļēāļĢāļ›āļĢāļąāļšāļ•āļąāđ‰āļ‡āļ„āđˆāļēāļ­āļĒāđˆāļēāļ‡āļ›āļĨāļ­āļ”āļ āļąāļĒ : āļŠāļēāļĄāļēāļĢāļ–āļ•āļąāđ‰āļ‡āļ„āđˆāļēāđ„āļ”āđ‰āđ‚āļ”āļĒāđƒāļŠāđ‰āđāļ—āđˆāļ‡āđāļĄāđˆāđ€āļŦāļĨāđ‡āļ (magnetic stick) āđƒāļ™āļžāļ·āđ‰āļ™āļ—āļĩāđˆāļ—āļĩāđˆāļĄāļĩāļ„āļ§āļēāļĄāđ€āļŠāļĩāđˆāļĒāļ‡
  • āļ›āđ‰āļ­āļ‡āļāļąāļ™āļāļēāļĢāļĢāļ°āđ€āļšāļīāļ” : āđ„āļ”āđ‰āļĢāļąāļšāļāļēāļĢāļĢāļąāļšāļĢāļ­āļ‡āļĄāļēāļ•āļĢāļāļēāļ™ ATEX, IECEx āđāļĨāļ° TIIS
  • āļĄāļēāļ•āļĢāļāļēāļ™ IP : āļĢāļ°āļ”āļąāļšāļāļēāļĢāļ›āđ‰āļ­āļ‡āļāļąāļ™ IP65
  • āļāļēāļĢāļ•āļąāđ‰āļ‡āļ„āđˆāļēāđāļĨāļ°āļāļēāļĢāļšāļģāļĢāļļāļ‡āļĢāļąāļāļĐāļē : āļŠāļēāļĄāļēāļĢāļ–āļ•āļąāđ‰āļ‡āļ„āđˆāļēāđāļĨāļ°āļ•āļĢāļ§āļˆāļŠāļ­āļšāļ­āļļāļ›āļāļĢāļ“āđŒāđ„āļ”āđ‰āļ‡āđˆāļēāļĒāđ€āļžāļĩāļĒāļ‡āļ„āļ™āđ€āļ”āļĩāļĒāļ§

Specifications 
(KD-12A / KD-12B / KD-12C)

ModelKD-12AKD-12BKD-12C
Target GasCombustible Gas / Toxic Gas Hydrogen / Helium / Carbon Dioxide, etc.
Sensor TypeHot wire semiconductorCatalyticThermal conductivity
Detection Rangeppm%LELVol%
Detection MethodDiffusion type  
Alarm Set ValueSet to user specifications  
Alarm Accuracy
  • Combustible gas: Âą25% of alarm set value under stable conditions
  • Toxic gas: Âą30% of alarm set value under stable conditions  
Alarm Delay
  • Combustible gas: within 30 seconds at 1.6 times the alarm set value concentration
  • Toxic gas: within 60 seconds at 1.6 times the alarm set value concentration  
Alarm Display
  • Gas alarm: Red LED lamp flashing
  • Trouble alarm: Yellow LED lamp flashing (sensor disconnection, sensor zero drop, power voltage abnormality, etc.)  
Gas Concentration DisplayLED display: 4-digit digital display  
External Outputs
  • Gas concentration analog signal: DC4-20mA (common to negative side of powersupply)
  • Gas alarm contact *1 : 1a non-voltage contact / automatic return(Rated load: AC250V 0.5A or DC30V 0.5A (resistive load))

For KD-12AH/BH (HART Signal)

  • DC4-20mA (shared with the negative power source)
  • HART signal Protocol 7.5 *Burst mode not supported
  • 1a non-voltage contact/ automatic return
    - Rated load: AC250V 3.0A or DC30V 3.0A (resistive load)  
Approvals

Explosion Proof
II2 G Ex db IIC T5 Gb (ATEX)
Ex db IIC T5 Gb (IECEx)
Ex d IIC T5 (Japan Ex)
CE / SIL2  

Protection RatingIP65  
Method of Operation4 magnetic switches  
Compatible CablesCable outer diameter: Ø10 to Ø13
5-core shielded cable *1 : CVV- S1.25mm2
3-core shielded cable: CVV- S2mm2 or 1.25mm2  
Power SupplyDC24V (Âą20%)  
Power ConsumptionMaximum 3W  
Operating Temperature and HumidityTemperature: -10 to 50°C
Humidity: 10 to 90% RH (0 to 50°C)  
External DimensionsW158×H116×D68 mm (excluding protrusions)  
WeightApprox. 1.2 kg  

 

 

(KD-12D/KD-12O/KD-12R)

ModelKD-12DKD-12OKD-12R
Target GasCarbon monoxide                   
Hydrogen sulfide 
Oxygen  Methane, Propane, Carbon dioxide
Sensor TypeElectrochemical cellGalvanic cellNon-dispersive NDIR
Detection Range0 - 100 ppm or
0 - 150 ppm or
0 - 250 ppm *4

0-30 ppm
0-50 ppm *4
0-25 vol%Set to user specifications
Detection MethodDiffusion type  
Alarm Set ValueFull scale 100 ppm:
25ppm (recommended value)
Full scale 150 ppm, 250 ppm:
50 ppm (recommended value)

10 ppm
  
18.0 vol%Set to user specifications
Alarm AccuracyÂą30% of alarm set value under the same conditions
Alarm DelayWithin 60 seconds at 1.6 times the alarm set value concentration
Alarm Display
  • Gas alarm: Red LED lamp flashing
  • Trouble alarm: Yellow LED lamp flashing (sensor disconnection, sensor zero drop, power voltage abnormality, etc.)  
Gas Concentration DisplayLED display: 4-digit digital display  
External Outputs
  • Gas concentration analog signal: DC4-20mA (common to negative side of power supply)
  • Gas alarm contact *1 : 1a non-voltage contact / automatic return(Rated load: AC250V 0.5A or DC30V 0.5A (resistive load))

For KD-12AH/BH (HART Signal)

  • DC4-20mA (shared with the negative power source)
  • HART signal Protocol 7.5 *Burst mode not supported
  • 1a non-voltage contact/ automatic return
    - Rated load: AC250V 3.0A or DC30V 3.0A (resistive load)  
Approvals

Explosion Proof
II2 G Ex db IIC T5 Gb (ATEX)
Ex db IIC T5 Gb (IECEx)
Ex d IIC T5 (Japan Ex)
CE

Protection RatingIP65  
Method of Operation4 magnetic switches  
Compatible CablesCable outer diameter: Ø10 to Ø13
5-core shielded cable *1 : CVV- S1.25mm2
3-core shielded cable: CVV- S2mm2 or 1.25mm2  
Power SupplyDC24V (Âą20%)  
Power ConsumptionMaximum 1.2W  Maximum 2.2W
Operating Temperature and HumidityTemperature: -10 to 40°C
Humidity: 30 - 85% RH
Temperature: 0 - 40°C
Humidity: 30 - 85% RH
Temperature: 0 to 50°C
Humidity: 10 - 90% RH (0-50 °C)
External DimensionsW158×H116×D68 mm (excluding protrusions)
WeightApprox. 1.3 kg

 

*1 Excluding terminal block type.
*2 ATEX explosion-proof-proof certified.
*3 Assuming no sudden changes in temperature or humidity, and no condensation.
*4 Please specify at the time of purchase.
*5 The ambient temperature is 20¹2°C.



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