Henan Bosean Electronic Technology Co., Ltd.
one stop gas detection solution from China factory
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K-400 Portable gas detector with a large LCD. It can monitor CO, H2S, O2 and combustible gas simultaneously.
The instrument features two instant alarms with audio/visual and vibratory indicators, rechargeable battery, and simple use.
| Operating & Storage Environment | Temperature: -20°C~55°C (-4F~122F) Humidity: 5%-95% (Relative humidity non-condensing) Pressure: 95~110kPa |
| Sampling method | Diffusion type |
| Detecting Range | CO: 0~1000ppm H2S:0~100 PPM O2: 0~30%vol Combustible Explosive Gas (Ex / LEL / CH4): 0~100%LEL |
| Sensor | O2 /H2S / CO: plug-in electrochemical sensor |
| Alarm Type | low & high alarm, multiple gas alarm, sensor alarm, battery low alarm, prompt tone, automatic shutdown alarm |
| Resolution | 0.1%VOL (O2), 1ppm (CO), 0.1ppm (H2S), 1%LEL (EX) |
| Data record | 500 sets of data storage |
| Display | Alphanumeric large LCD displays the real time gas concentration and alarm stage |
| Backlight | Automatically activated when working in poor lighting environment or the alarm sounding or the button is knobbed down. |
| Self-checking Function | Self-checking Battery power, display, sensor, hardware failure |
| Explosion-proof | EXiaIICT4 |
| Protection grade | IP65 |
| Power Supply | Rechargeable lithium battery |
Application
Our customers and patent certificate
| Model | Range | L-alarm | H-alarm |
| CO | 0-1000ppm | 35ppm | 200ppm |
| O2 | 0-30%vol | 19.5%vol | 23.5%vol |
| H2 | 0-100%LEL | 20%LEL | 50%LEL |
| H2S | 0-100ppm | 10ppm | 20ppm |
| CH4 | 0-100%LEL | 20%LEL | 50%LEL |
| C2H4O | 0-20ppm | 10ppm | 15ppm |
| C2H4 | 0-100%LEL | 20%LEL | 50%LEL |
| C3H8 | 0-100%LEL | 20%LEL | 50%LEL |
| C2H5OH | 0-100%LEL | 20%LEL | 50%LEL |
| NH3 | 0-100ppm | 25ppm | 50ppm |
| CL2 | 0-20ppm | 5ppm | 10ppm |
| O3 | 0-20ppm | 5ppm | 10ppm |
| SO2 | 0-100ppm | 2ppm | 5ppm |
| PH3 | 0-20ppm | 0.3ppm | 5ppm |
| CO2 | 0-50000ppm | 1000ppm | 2000ppm |
| NO | 0-250ppm | 20ppm | 50ppm |
| NO2 | 0-20ppm | 5ppm | 10ppm |
| HCN | 0-500ppm | 10ppm | 20ppm |
| HCL | 0-50ppm | 10ppm | 20ppm |
| CH2O | 0-10ppm | 2ppm | 5ppm |
| VOC | 0-100ppm | 20ppm | 50ppm |
| C6H6 | 0-100ppm | 20ppm | 50ppm |
Note: The above table is a general parameter. If you need other gas and range, please contact our online customer service.