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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 |
fixed toxic gas alarm KB-501