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fixed toxic gas alarm KB-501
fixed toxic gas alarm KB-501

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Gas alarm : online toxic gas alarm
Intrinsically safety circuit design
ISO9001:2000 certificate

Gas alarm KB-501 is a new type toxic gas detector which used high performance imported electrochemical sensor and sophisticated SMD technology. It has following advantages: good repeatability,high resistance to humidity-temperature jamming, long performance life and simple operation. It is applied to inspection for toxic gas concentration in industrial environments.

 

KB-501 can translate the appointed toxic gas concentration signals into electric current signals or digital signals for outputting and transmitting. It adopted three-wire (4~20mA signals output) and four-wire (RS485 bus output) system, remotely examine the detection result through the monitor or controller. Common applications is gas safety inspection and alert for industrial scene, such as petroleum refinery, chemical plants, LPG stations, boiler rooms, gas stations, paint spray booths, etc.

 

Features

• Imported electrochemical sensor;

• Intrinsically safety circuit design;

• Three-wire system 4~20mA standard signals output and long distance transmission;

• RS485 bus output (optional);

• Possible to connect to DCS system directly;

• The probe has following advantages: high sensitivity, quick-response capacity, long performance life and short polarization time.

 

Technical Specifications

Applicable Gas

Toxic gas

Detecting Range

Refer to the gas parameter list

Alarm Threshold

Refer to the gas parameter list

Working Current

≤30mA

Working Voltage

16~30V DC

Power Consumption

<0.5W

Output Signals

three-wire system 4~20mA standard signals output;

RS485 bus output (optional)

Installation Means

Wall mounted

Transmission Distance

≤1000m

Explosion-proof Type

Explosion insulating

Explosion-proof Index

Ex d IIC T6

Protection Grade

IP65

 

Gas Parameter list

Applicable gas

Detecting Range

Alarm Threshold (Two-stage)

Low / High

NH3 (Hydrogen nitride)

0-100PPM

25 PPM / 50 PPM

Cl2 (Chlorine)

0-50PPM

0.5 PPM / 1.0 PPM

H2 (Hydrogen)

0-1000PPM

50 PPM / 100 PPM

H2S (Hydrogen Sulfide)

0-100PPM

10 PPM / 20 PPM

HCl (Chlorine Hydride)

0-30PPM

5 PPM / 10 PPM

CO (Carbon Monoxide)

0-500PPM

35 PPM / 70 PPM

ClO2 (Chlorine Dioxide)

0-50PPM

0.3 PPM / 0.5 PPM

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