Analysis of Basic Knowledge of Flammable Gas Detectors
A flammable gas detector is a gas‑concentration measuring instrument integrating a gas detector and a gas alarm controller. It can be powered directly by a 220 V power supply. Toxic‑gas detectors adopt imported electrochemical or catalytic‑combustion sensors, featuring stable signals and high accuracy. The explosion‑proof wiring design makes it suitable for various hazardous locations.
Product Features
Adopts advanced microprocessor technology
Measuring range configurable according to actual site requirements
Powered by 220 V AC mains supply
On‑site concentration display with audible‑visual alarm
Fast response speed and high measurement accuracy
Output signals configurable according to actual site requirements
Optional relay output and RS485 bus output
Furthermore: Detection principle: catalytic‑combustion / electrochemical; Operating mode: diffusion‑type for long‑term continuous operation; Output signal: relay output or optional RS485 output; Cable type: RVVP 3 × 1.0 mm²; Housing material: die‑cast aluminium; Explosion‑proof marking: Ex d IIC T6; Ingress‑protection rating: IP65; Operating humidity: 90 % RH; Operating temperature: −20 ~ 50 ℃ (custom‑made for special requirements).
Flammable gas detectors belong to measuring instruments subject to mandatory national verification. They are widely used in metallurgy, petroleum, chemical industry, petrochemicals, coal mining, municipal gas systems, warehousing, transportation, hotels, restaurants and fire‑protection departments.
When flammable or toxic gas leaks and its concentration reaches the preset alarm threshold for explosion or poisoning, the detector will trigger an alarm signal to remind staff to take safety measures, so as to prevent explosion, fire and poisoning accidents and ensure safe production.
Under normal service conditions, the sensitivity of the detector sensor naturally declines by 10 %‑30 % per year. If the sensor sensitivity degrades and the instrument fails to alarm when gas concentration reaches the lower explosive limit, explosion hazards will occur. For this reason, flammable gas detectors shall be verified annually to guarantee reliable performance and accurate measured values.
