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Diffusion Type With Led Concentration Display

Diffusion Type With Led Concentration Display
Diffusion Type With Led Concentration Display
Product Code : 22
Product Description

Features

  • Simpler,Smarter and reliable gas detector with digital display .
  • Simple and cost effective installation .
    Rugged, compact and lightweight design.
  • Environment friendly product .
  • NDIR (non dispersive infrared sensor) mounted type approvals
  • Ex d llC T5 (KD-12A/B/C)
  • Ex d llC T5 (KD-12D/R/O
  • ATEX,Standard (KD-12A/ B/C /D/O/R)
  • CE marking (EMC directive )
  • SIL (KD12B)

Technical Specifications

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)

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

 

 

 

 

 

 



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