【Function and Purpose】
The gas pipeline detector uses the new-generation high-performance trolley-type combustible gas detector, which needs no drilling or excavation but just push the device forward while walking on the ground above the gas pipeline, and the leakage position on the underground pipeline can be detected. So it’s the optimal instrument for leakage detection on underground gas transportation pipelines.
The gas pipeline detector is widely used in safety inspection, maintenance and emergency disposal on gas transportation pipelines by such departments as urban gas, petroleum, petro-chemical, oil depot, gas stations and oil and gas fields.
【Characteristics】
●A novel design, all-in-one functions, all the components integrated into the trolley, with less weight, easily operated, able to reduce labor intensity largely;
●Zero adjustment function;
●The adoption of the high-capacity Lithium battery pack, being energy-efficient and environmental-friendly;
●Quick and intelligent charging, without manual control, saving costs;
●The most advanced sensor and air pump used, featuring anti-interference, low temperature resistance and high reliability;
●The large-sized integrated circuits used, displayed in digits, alarming by sound and light in case of under voltage and air circuit blocking
●High sensitivity, excellent selectivity, requiring no drilling but just detecting the leakage points of buried pipelines on the ground;
●The alarming tone varies as the gas concentration changes, no need of observing the display by the operator, which improves the work efficiency.
【Primary Technical Parameters】
●Power supply:7.4V lithium battery pack;
●Detected range: 0-100PPM, 0-10000PPM;
●Set point of alarming: 100PPM（start continuous tone alarming）;
●Response speed: approximately 7 seconds（90% answer）；
●Alarm indication:（gas detection）displayed in the value of gas concentration. In case the set point is exceeded, the buzzer sounds to alarm (from intermittent to continuous tones);
●Working time: Approximately 16 hours;
●Operating temperature range:-10～40°C；
●Minimum resolution:5PPM;
●SL-908A applicable to urban gas（the main component of methane）;
●Storage temperature: -10°C～+50°。
【Detection Principle and Methodology】
When the air containing combustible gases is transported to the sensor via the air pump, the resistance of the detection element will increase quickly (the resistance variation is proportional to the gas concentration), a voltage signal output is magnified through the circuit and sent to the display, and the alarming signal is generated.
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