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| Brand Name: | Bestone, Wintact |
| Model Number: | WT8812 |
| MOQ: | 20 |
| Delivery Time: | 5-8 working days |
| Payment Terms: | T/T |
The WT8812 Compound 4-in-1 Gas Monitor is a high-performance safety instrument designed for simultaneous detection of combustible gases (LEL), oxygen (O₂), hydrogen sulfide (H₂S), and carbon monoxide (CO). Equipped with high-quality gas sensors, it delivers accurate measurement, stable performance, and excellent sensitivity and repeatability. The device is easy to operate and maintain, meeting the stringent reliability requirements of industrial safety monitoring.
Its housing is constructed from high-strength engineering plastics combined with non-slip rubber, providing dust and explosion-proof protection, a smooth hand feel, and durable performance in demanding environments. The monitor is widely used across petroleum, chemical, environmental protection, metallurgy, refining, gas transmission and distribution, biochemical medicine, and agricultural research industries.
LCD display with backlight (WT8812)
English language interface (WT8812)
Simultaneous detection of four gases: O₂, CO, H₂S, and LEL
Three alarm forms: sound, light, and vibration
Data logging capability
Charging function
High and low value alarm
℃/℉ temperature unit conversion
Automatic shutdown
Battery level display
Zero point calibration
Temperature compensation
Data retention
Maximum and minimum measurement recording
Comprehensive data logging with 120,000-point memory capacity
| Parameter | WT8811 | WT8812 |
|---|---|---|
| Gas Detection | O₂, H₂S, CO, LEL | |
| Measuring Range | 0–100% LEL, 0–30% VOL, 0–100 μmol/mol, 0–1000 μmol/mol | |
| Resolution | 0.1, 0.1, 0.1, 1 | |
| Accuracy | ≤ ±5% FS | |
| Response Time (90%) | Less than 30 seconds | |
| Indication Mode | LCD displays real-time data and system state; LED, sound, and vibration alarm indication | |
| Operating Conditions | Temperature: −20 to 50 ℃; Humidity: <95% RH non-condensing | |
| Working Voltage | DC 3.7 V (Lithium battery capacity 1800 mAh) | |
| Battery Model | LP103450-1800mAh | |
| Charging Time | 6–8 h | 4 h |
| Standby Time | More than 8 h (varies slightly with working state) | |
| Dimensions | 71 * 153 * 49 mm | |
| Weight | 218.7 g (with battery and back button) | |
Gas Meter
Operation Manual
Calibration Cover
Screw
Power Adapter
USB Cable
PVC Transparent Hose
Plastic Carrying Case
Paper Color Box
