The instrument can be used to detect the location of underground gas pipelines directly on the ground and is the ideal instrument for underground gas pipeline leak detection.The instrument is widely used in urban gas, oil, petrochemical, oil depots, gas stations, oil and gas fields, Safety inspections and pipeline maintenance and leakage rescue and so on.

'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.
Sensitivity: better than 50 ppm at 0 to 1000 ppm and better than 1% at 1 to 100% LEL
Detection range: 0 ~ 1000ppm, 1-100% LEL (automatic)
Warm-up time: 10s
Response time: less than 10s
Audio indication: The higher the buzzer frequency, the higher the concentration
Battery: 4400mAh high capacity 7.4v rechargeable lithium-ion battery
Standby time: more than 8h
Charging time: not less than 4h
Working conditions: temperature -10 degrees Celsius to 60 degrees Celsius Relative humidity: less than 95% (no condensation)
Environmental wind speed: less than 4m / s
Gas flow rate: 1 L / min

'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.