BH-4 Portable 4 in 1 Gas detection alarm, hydrogen sulfide/carbon monoxide/oxygen/combustible gas
BH-4 can simultaneously detect hydrogen sulfide, carbon monoxide, oxygen, combustible gas 4 kinds of gas, natural diffusion detection of gas concentration, BH-4 is suitable for explosion-proof, toxic gas leakage rescue, underground pipelines, mines, metallurgy and other environments.
Bosean
BH-4
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Introduction
BH-4S four-in-one Gas Detector detects gas concentration in a natural diffusion way, using a new 32-bit microprocessor and imported industrial-grade sensor, with fast response time, high measurement accuracy, good stability and repeatability. 2.4-inch LCD screen, resolution 320*240 high-definition interface display, with upload computer analysis, Chinese and English switching and other auxiliary functions, the whole machine in line with the national metrology and production license standards.
It is an intrinsically safe instrument that can continuously detect the concentration of toxic, harmful, flammable and explosive gases in the operating environment. It is suitable for explosion-proof, toxic gas leakage rescue, underground pipelines, mines, metallurgy, power plants, chemical industry, tunnels, tunnels and other places. Effectively prevent the occurrence of poisoning accidents, ensure that the life safety of staff is not violated, and production equipment is not lost.
Features
Gas parameter table
| The gas to be measured | Measuring range | Selectable measuring ranges | resolution | Alarm point |
| Combustible gas EX | 0-100%lel | 0-100%vol (infrared) | 1%lel/1%vol | Low: 20 High: 50 |
| Oxygen O2 | 0-30%vol | 0-30%vol | 0.1%vol | Low: 19.5% High: 23.5%vol |
| Hydrogen sulfide H2S | 0-100ppm | 0-50/200/1000ppm | 1ppm | Low: 10 High: 20 ppm |
| Carbon monoxide CO | 0-1000ppm | 0-500/2000/5000ppm | 1ppm | Low: 50 High: 150 ppm |
| Carbon dioxide CO2 | 0-5000ppm | 0-1%/5%/10%vol (infrared) | 1ppm/0.1%vol | Low: 1000 High: 2000 ppm |
| Nitric oxide NO | 0-250ppm | 0-500/1000ppm | 1ppm | Low: 50 High: 150 ppm |
| NO2 nitrogen dioxide | 0-20ppm | 0-50/1000ppm | 0.1ppm | Low: 5 High: 10 ppm |
| Sulfur dioxide SO2 | 0-20ppm | 0-50/1000ppm | 0.1/1ppm | Low: 5 High: 10 ppm |
| Chlorine CL2 | 0-20ppm | 0-100/1000ppm | 0.1ppm | Low: 5 High: 10 ppm |
| Hydrogen H2 | 0-1000ppm | 0-500/2000/5000ppm | 1ppm | Low: 50 High: 150 ppm |
| Ammonia NH3 | 0-100ppm | 0-50/500/1000ppm | 0.1/1ppm | Low: 20 High: 50 ppm |
| Phosphine PH3 | 0-20ppm | 0-20/1000ppm | 0.1ppm | Low: 5 High: 10 ppm |
| HCL hydrogen chloride | 0-20ppm | 0-20/500/1000ppm | 0.1ppm | Low: 5 High: 10 ppm |
| Chlorine dioxide CLO2 | 0-50ppm | 0-10/100ppm | 0.1ppm | Low: 5 High: 10 ppm |
| Hydrogen cyanide HCN | 0-50ppm | 0-100ppm | 0.1/0.01ppm | Low: 10 High: 20 ppm |
| Ethylene oxide C2H4O | 0-100ppm | 0-100ppm | 1/0.1ppm | Low: 20 High: 50 ppm |
| ozone | 0-10ppm | 0-20/100ppm | 0.1ppm | Low: 2 High: 5 ppm |
| Formaldehyde CH2O | 0-20ppm | 0-50/100ppm | 1/0.1ppm | Low: 5 High: 10 ppm |
| Hydrogen fluoride HF | 0-100ppm | 0-1/10/50/100ppm | 0.01/0.1ppm | Low: 2 High: 5 ppm |
| Xylene/toluene | 0-20ppm | 0-1/10/50/100ppm | 0.01/0.1ppm | Low: 5 High: 10 ppm |
Bosean BH-4 Gas detection alarm instrumentSpecifications
| LIST | VALUE |
|---|---|
| Expansion gas | Supports more than 30 kinds of Sensors, flexible configuration, and can be customized according to customer needs. Default: EX, O2, H2S, CO four kinds of gas |
| EX-range | 0 ~ 100% LEL |
| default precision | EX: 1% LEL, O2: 0.1% vol, H2S: 1ppm, CO: 1ppm |
| Detection Accuracy | ≤ ± 2% FS (depending on Sensors) |
| Sampling method | diffusion |
| Concentration unit | ppm、mg/m3、%VOL、%LEL(可切) |
| Response time | T90<30s |
| Operating language | Switch between Chinese and English |
| Display | 2.4-Inch LCD display with a resolution of 320 * 240 |
| Linear dispersion | Displays the change of gas concentration in the recent period of time, which is convenient for comparative analysis and observation of data changes |
| Alarm method | Sound, light, vibration |
| Alarm method | Four ways of sound and light vibration display |
| Operating Temperature | -20~50℃ |
| Power | 3.7V rechargeable lithium battery, battery Capacity 1800mA |
| Sensors Life | 24 months |
| Charging time | Charging time is less than 7 hours, continuous work for more than 8 hours |
| data storage | 500 sets of data storage |
| data transmission | USB interface data transmission, equipped with PC software, can query and export alarm record data, which is convenient for comparative analysis and observation of data changes |
| password protection | With password protection function and password modification function (default password 0000) |
| Explosion-proof sign | Exib's B T3 Gb |
| Environment humidity | 0~95% RH non-condensing |
| Shell material | ABS+PC |
| Dimensions | 145*69*28mm |
| Show误差 | ≤5%FS |
| Alarm method | LCD display real-time data and system status, Light Emitting Diode, sound, vibration indication alarm, fault and underVoltage |
| Weight | 400g |
| resolution | EX: 1% LEL, H2S: 1ppm, CO: 1ppm, O2: 0.1% vol |
| Low alarm point | EX: 20% LEL, H2S: 10ppm, CO: 50ppm, O2: 19.5% vol |
| High alarm point | EX: 50% LEL, H2S: 35ppm, CO: 150ppm, O2: 23.5% vol |
| CO-range | 0~1000ppm |
| H2S-range | 0~100ppm |
| O2-range | 0 ~ 30% VoL |
Bosean BH-4 Gas detection alarm instrument Packing list
Complete-built unit X1, Encasement box X1, Charger X1, Calibration cover X1, Manual X1, Certificate X1, Warranty card X1
[Note] Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.
