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| Product Name | Bosean CD4 Portable 4 in 1 Gas detection alarm instrument | Bosean BH-4 Portable 4 in 1 Gas detection alarm instrument |
| Product Price | $344.00 | In coming |
| Details | Details | |
| Model comparison | ||
| Usage Type | Portable | Portable |
| Gas Quantity | Multi-gas | Multi-gas |
| Sensor Principle | Electrochemical Catalytic Bead | Electrochemical Catalytic Bead |
| Sampling Method | Diffusion | Diffusion |
| Detection gas | O₂ CO H₂S Others | Ex O₂ CO H₂S |
| T90 Response Time | ≤30s | |
| Explosion-proof | ||
| IP Rating | ||
| Data Output | ||
| Parameter comparison | ||
| Type | Portable | Portable |
| Detect the amount of gas | A variety of gases | A variety of gases |
| Sensor principle | Electrochemistry & catalytic combustion | |
| Detect gas | Hydrogen sulfide, carbon monoxide, oxygen, Miscellaneous | Hydrogen sulfide, carbon monoxide, oxygen, flammable gases |
| Sampling method | Diffusion Type (optional external sampling pump) | |
| Sensor support | Default: methane, O2, H2S, CO four gases | |
| default Range | Methane: 0.00~ 4.00%; O2:0~ 25.0%; H2S: 0~ 100ppm; CO: 0~ 1000ppm | |
| Default accuracy | Methane: 0.01% vol; O2:0.1% vol; H2S: 1 ppm; CO: 1 ppm | |
| detection error | Depending on the Sensor | ≤ +/- 2% FS (depending on Sensor) |
| Concentration unit | PPM, mg/m ³,% VOL,% LEL (switchable) | PPM, mg/m3,% VOL,% LEL (switchable) |
| Response Time (T90) | Methane: not more than 20s; oxygen: not more than 35s; carbon monoxide: not more than 45s; hydrogen sulfide: not more than 45s | |
| language display | Switch between Chinese and English | Switch between Chinese and English |
| display technology | 2.0 inch LCD screen with 320 * 240 resolution | |
| Alarm feature | Alarm light: red LED flashing alarm, ≥ 20m; alarm sound: buzzer alarm ≥ 75dB; vibration alarm | Alarm light: red LED flashing alarm, visible at ≥ 20 meters; alarm sound: buzzer alarm ≥ 75dB; vibration alarm |
| Alarm mode | Four ways of sound and light vibration display | |
| Alarm point | Methane: 1.00% CH4; Oxygen: 18.0% O2; Carbon monoxide: 24 ppm; hydrogen sulfide: 50 ppm | |
| Operating temperature | -20℃~50℃ | -20℃~50℃ |
| Operating humidity | 0-95% RH (non-condensing, Humidity greater than 90% RH, need to be equipped with filtrate drying cylinder) | |
| Power supply method | 3.7V rechargeable lithium battery, Battery capacity 2000mAh | 3.7V rechargeable lithium battery, capacity 1800mAh |
| charging time | Charging time is less than 7 hours, continuous work for more than 8 hours | Charging time is less than 7 hours, continuous work for more than 8 hours |
| Sensor life | 2 years | 2 years |
| data logging | 500 Data storage | |
| data transmission | USB interface data transmission, with PC software, alarm recording data query, export, easy to compare and analyze data changes | USB interface, with PC software, can query and export alarm record data |
| Explosion-proof sign | Exib IIB T3 Gb | Exib IIB T3 Gb |
| shell material | ABS+PC | ABS+PC |
| Dimension | 130X67x30mm (length x width x thickness) | |
| weight | 400g | 400 g |
