The instrument is used to directly detect the leakage of combustible gas in buried pipelines, and can detect the leak location of underground gas pipeline on the ground, which is an ideal instrument for underground gas pipeline exploration and leak detection.The instrument is widely used in urban gas, petroleum, petrochemical and oil depot , Gas stations, oil and gas fields, natural gas, liquefied petroleum gas, artificial gas, methane, propane, butane and other parts of the gas pipeline safety inspection and pipeline maintenance and leakage rescue.

'Features'
● high-capacity lithium battery, fast smart charging, no manual control, saving the use of cost;
● The use of the world's most advanced sensors and air pumps, with anti-interference, low temperature and high stability characteristics;
● use of large-scale integrated circuits, digital display, sound and light alarm, power supply under pressure and gas blockage alarm function;
● high sensitivity, good selectivity, without drilling, direct ground detection of buried pipelines and leaks;
● alarm sound with the gas concentration changes, the operator does not need to observe the display part, improve work efficiency.
'Main Specifications'
Detection of gas: for natural gas, liquefied petroleum gas, artificial gas, methane and other gases.
Sensitivity: 1ppm, better than 50ppm at 0 to 1000ppm, better than 1% at 1 to 100% LEL
Detection range: 0 ~ 1000ppm, 1-100% LEL (automatic full scale)
Display: all-digital display, green auto backlight
Warm-up time: 10s
Alarm response time: less than 5s
Audio indication: with the gas concentration level, automatically change the buzzer frequency
Battery: 4400mAh high capacity 7.4v rechargeable lithium-ion battery
Standby time: more than 12h
Charging time: not less than 4h
Working conditions: temperature -20 degrees Celsius ~ 60 degrees Celsius
Relative humidity: less than 95% (no condensation)
Environmental wind speed: less than 4m / s
Gas flow: 1L / min Volume: 525X280X125mm (full set of packaging)

'Detection principle and method'
When the air containing combustible gas, sent to the sensor through the air pump, the detection device will rapidly increase the resistance Display part, and generate alarm signal.