Industrial gas detector Intrinsically safety circuit Three-wire system 4~20mA standard signals output ISO9001 certificate
KB-501SG Online Gas Detector employs advanced gas sensor and microcontroller, and SMD technology.
KB-501SG can translate the target gas concentration signals into digital signals for display. Three-wire system 4~20mA electric current signals output, with long-distance transmission and good anti-interference capacity. In addition, it has two-stage alarm function with acoustic and visual signals.
Features1. Cast aluminium housing2. Advanced Catalytic Combustion or Electrochemical sensor3. Intrinsically safety design4. High brightness LED digital display5. Timely alert with sound and light alarm signals6. Three-wire system 4~20mA standard signals output and long distance transmission7. Possible to connect to DCS system directly8. The sensor has high sensitivity, quick-response capacity, long working life and short polarization time9. With a manual controller (optional units) used for adjustment of parameter10. Function of infrared remote control operation (remote-control is optional units)
Technical Specifications
| Detectable Gas 1 | Combustible / Flammable / Explosive gas ( H2, CH4, LPG, Natural Gas, etc. ) |
| Detecting Range | 0~100% LEL |
| Alarm Threshold | (two-stage) Low: 25% LEL / High: 50% LEL |
| Detectable Gas 2 | Toxic / Poisonous gas ( H2S, CO, NH3, NO, NO2, SO2, Cl2, ClO2, O3, etc. ) |
| Detecting Range | Refer to the gas parameter list (e.g. CO: 0-500 ppm) |
| Alarm Threshold | Refer to the gas parameter list (e.g. CO: 35 ppm / 70 ppm) |
| Detectable Gas 3 | Oxygen (O2) |
| Detecting Range | 0~30.0% VOL |
| Alarm Threshold | Low: 18.5% VOL High: 23.5% VOL |
| Sensor Type | Catalytic Combustion sensor(Combustible gas); Electrochemical sensor(Toxic and Oxygen) |
| Working Environment | Temperature: -20°C-55°CHumidity: ≤95% RH (non-condensing) |
| Working Voltage | 16~30V DC |
| Working Current | ≤170mA(Combustible gas); ≤50mA(Toxic and Oxygen) |
| Power Consumption | <3W(Combustible gas); <1 W(Toxic and Oxygen) |
| Display | High brightness LED digital display |
| Output Signals | Three-wire system 4~20mA standard signals output |
| Alarm Output | Two-way electrical relay tip output (30V 2A) |
| Alarm Signal | Acoustic and light signals alert |
| Installation Means | Wall mounted |
| Transmission Distance | ≤1000m |
| Explosion-proof Type | Explosion insulating |
| Explosion-proof Index | Ex d IIC T6 |
| Protection Grade | IP65 |
| Remarks: The detecting range and alarm threshold value can be adjusted. | |
Gas Parameter List
| Gas Type | Detection Range | Alarm Threshold | Sensor Type |
| NH3 (Ammonia) | 0-100 PPM | 25 PPM / 50 PPM | Electrochemical sensor |
| Cl2 (Chlorine) | 0-50.0 PPM | 1.0 PPM / 2.0 PPM | |
| H2 (Hydrogen) | 0-1000 PPM | 50 PPM / 100 PPM | |
| CH2O (Formaldehyde) | 0-100 PPM | 25 PPM / 50 PPM | |
| O2 (Oxygen) | 0-30.0%VOL | 18.5%VOL / 23.5%VOL | |
| H2S (Hydrogen Sulfide) | 0-100 PPM | 10 PPM / 20 PPM | |
| HCl (Chlorine Hydride) | 0-30.0 PPM | 5.0 PPM / 10.0 PPM | |
| HCN (Hydrocyanic Acid) | 0-50.0 PPM | 5.0 PPM / 10.0 PPM | |
| PH3 (Phosphine) | 0-20.0 PPM | 0.3 PPM / 0.6 PPM | |
| HF (Fluorine Hydride) | 0-10.0 PPM | 3.0 PPM / 6.0 PPM | |
| NO (Nitrogen Oxide) | 0-250 PPM | 25 PPM / 50 PPM | |
| CO (Carbon Monoxide) | 0-500 PPM | 35 PPM / 70 PPM | |
| SO2 (Sulfur Dioxide) | 0-20.0 PPM | 2.0 PPM / 10.0 PPM | |
| SO2 (Sulfur Dioxide) | 0-2000 PPM | 10 PPM / 20 PPM | |
| ClO2 (Chlorine Dioxide) | 0-50.0 PPM | 0.3 PPM / 0.5 PPM | |
| NO2 (Nitrogen Dioxide) | 0-20.0 PPM | 1.0 PPM / 2.0 PPM | |
| C2H4O (Ethylene Oxide) | 0-100 PPM | 1 PPM / 10 PPM | |
| O3 (Ozone) | 0-20.0 PPM | 5.0 PPM / 10.0 PPM | |
| CH4 (Methane) | 0-100%LEL | 25%LEL / 50%LEL | Catalytic Combustionsensor |
| C3H8 (Propane) | 0-100%LEL | 25%LEL / 50%LEL | |
| H2 (Hydrogen) | 0-100%LEL | 25%LEL / 50%LEL | |
| NH3 (Ammonia) | 0-100%LEL | 25%LEL / 50%LEL | |
| C2H4O (Ethylene Oxide) | 0-100%LEL | 25%LEL / 50%LEL | |
| CH3CH3 (Ethane) | 0-100%LEL | 25%LEL / 50%LEL | |
| C2H4 (Ethylene) | 0-100%LEL | 25%LEL / 50%LEL | |
| C4H10 (Butane) | 0-100%LEL | 25%LEL / 50%LEL | |
| C4H8 (Butylene) | 0-100%LEL | 25%LEL / 50%LEL | |
| C7H8 (Methylbenzene) | 0-100%LEL | 25%LEL / 50%LEL | |
| C2H7N (Ethylamine) | 0-100%LEL | 25%LEL / 50%LEL | |
| C8H10 (Ethylbenzene) | 0-100%LEL | 25%LEL / 50%LEL | |
| CH4O (Methanol) | 0-100%LEL | 25%LEL / 50%LEL | |
| C2H6O (Ethanol) | 0-100%LEL | 25%LEL / 50%LEL | |
| C3H4O (Acrolein) | 0-100%LEL | 25%LEL / 50%LEL | |
| C2H3Cl (Chloroethylene) | 0-100%LEL | 25%LEL / 50%LEL | |
| C2H7N(Ethylamine) | 0-100%LEL | 25%LEL / 50%LEL | |
| C3H9N (Isopropylamine) | 0-100%LEL | 25%LEL / 50%LEL | |
| CH3Br (Methyl Bromide) | 0-100%LEL | 25%LEL / 50%LEL | |
| CO2 (Carbon Dioxide) | 0-10.0%vol | 1.0%vol / 3.0%vol | NDIR infrared sensor |
| CO2 (Carbon Dioxide) | 0-5000ppm | 800 PPM / 1500 PPM | |
| CH4 (Methane) | 0-5.0%vol | 1.0%vol / 3.0%vol | |
| CH4 (Methane) | 0-100%vol | 5%vol / 10%vol | |
| Remarks: 1. Some gas types are not listed yet. If request, please inform us. 2. The detection range and alarm threshold values can be adjusted according to customer’s request. | |||
fixed industrial gas detector KB-501SG
