KMBH - 4A Construction Site Gas Detector
Introduction
The KMBH - 4A Construction Site Gas Detector is essential for
construction sites where gas hazards may occur. It continuously and
simultaneously detects combustible gas, O₂, and two types of toxic
gases. With a natural diffusion sampling method and high -
sensitivity sensors, it offers accurate and repeatable
measurements. The 32 - bit MCU provides high reliability and
adaptability to the dynamic construction environment. The large LCD
clearly shows real - time gas levels and system status. Its compact
design and light weight make it convenient to carry around
construction sites. Constructed with high - strength materials,
it’s waterproof, dustproof, and explosion - proof, protecting
construction workers from gas - related risks.
Product Features
1. Simultaneous multi - gas detection to enhance construction site
safety.
2. Compact and portable design for easy on - site use.
3. Robust build to endure construction - site conditions.
Technical Parameters
| Accuracy | ≦±5% F.S. |
| Response Time | ≦30s |
| Indication | LCD displays real-time and system status; LED, audio and vibration
alert for gas leakage, fault and low voltage. |
| Sensor | -20℃～50℃, ＜95%RH (no dew) |
| Working environment | DC3.7V Li-on battery, 1800mAh |
| Alarm Type | 6h~8h |
| Backlight | ≧8h continuously (without alarming) |
| Power Source | 2 years |
| Charging time | Appr. 400g (with battery) |
| Working time | 130mm×67mm×30mm(L × W × H) |
| Gas Sensor Life | Suit case packaging, 1pc; Charger, 1pc; Calibration cap, 1pc;
Communications cable, 1pc; User manual, 1pc. |
Specifications
| Model | Range | Resolution | L-alarm | H-alarm |
| CO | 0-1000ppm | 1ppm | 50ppm | 150ppm |
| O2 | 0-30%vol | 0.1%vol | 19.5%vol | 23.5%vol |
| H2 | 0-1000ppm | 1ppm | 50ppm | 150ppm |
| H2S | 0-100ppm | 0.1ppm | 10ppm | 20ppm |
| CH4 | 0-5%vol | 0.01%vol | 1%vol | 2.5%vol |
| C2H4O | 0-100ppm | 1ppm | 10ppm | 20ppm |
| EX | 0-100%LEL | 1%lel/1%vol | 20%LEL | 50%LEL |
| HC | 0-2%vol | 0.01%vol | 0 | 0 |
| C2H6O | 0-100ppm | 1ppm | 10ppm | 20ppm |
| NH3 | 0-100ppm | 1ppm | 10ppm | 20ppm |
| CL2 | 0-50ppm | 0.1ppm | 5ppm | 10ppm |
| O3 | 0-20ppm | 0.1ppm | 5ppm | 10ppm |
| SO2 | 0-20ppm | 0.1 | 5ppm | 10ppm |
| PH3 | 0-20ppm | 0.1ppm | 5ppm | 10ppm |
| CO2 | 0-5%vol | 0.01%vol | 1%vol | 2%vol |
| NO | 0-250ppm | 1ppm | 50ppm | 150ppm |
| NO2 | 0-20ppm | 0.1ppm | 5ppm | 10ppm |
| HCN | 0-50ppm | 0.1ppm | 5ppm | 10ppm |
| HCL | 0-50ppm | 0.1ppm | 5ppm | 10ppm |
| HF | 0-10ppm | 0.1ppm | 3ppm | 5ppm |
| C7H8/C8H10 | 0-100ppm | 1ppm | 10ppm | 20ppm |
