Four-gas detector

1,Overview

• It can simultaneously and continuously detect the concentrations of four gases: methane (CH4), oxygen (O2), carbon monoxide (CO), and hydrogen sulfide (H2S). It can also trigger an alarm when the concentrations exceed the limit. The new generation features a mainstream design, which is both aesthetically pleasing and durable. It includes functions such as gas concentration adjustment and calibration. The product has an automatic data storage and recording function, which updates and overwrites automatically in real time. The time and date can be set, and it is charged using a stand-mounted charger, making it convenient and practical. The new CD4 has a detector with an 8-bit microcontroller as the control unit, uses high-precision detection components, has high sensitivity and fast response speed. The screen uses a wide temperature range color liquid crystal display, which is clear and reliable. When the concentration of the measured gas detected in the environment reaches or exceeds or falls below the preset alarm value, the detector immediately emits sound and light alarms to remind us to take safety measures in time to ensure the safety of life and property.

2,Features

• Coal Safety
• Mine Safety
• Mine Explosion Prevention
• Main technical indicators

3,Functions
Detection method: Adjustable laser spectroscopy principle
Detected gas: CH4 (NH3/HCL/C2H6/C3H8/C4-C6 selectable)
Sensor type: Infrared laser type
Measurement range: 0-10% vol (0 to 99,999 ppm-m)
Distance measuring instrument: Yes
Maximum detection distance: 30m (60m with special reflective surface)
Sensitivity: 5 ppm-m at the detection distance of 0-15m
10 ppm-m % at the detection distance of 15-30m
Measurement accuracy: ±10% @ 100 ppm-m (2m)
Response time: 0.1 s (1s for distance measurement)
Alarm method: Digital flashing alarm
Display method: LCD
Charging method: Charging socket, 110-240VAC, 50/60Hz
Power supply: Rechargeable lithium battery (replaceable charging battery)
Battery life: 10 hours of normal operation after the battery is fully charged
Operating environment: Working temperature: -20ºC to 50ºC
Relative humidity: ≤99%
Air pressure: 80kPa – 116kPa
External dimensions: 158mm × 77mm × 37mm
Overall weight: 380g
Material: ABS + PC
Self-check function: Built-in self-check and calibration function, no daily calibration required
Laser protection level: Class IIIa
Certification method: CNEX Exib IIA T4 Gb
Protection level: IP54
Optional configuration: Ergonomic harness