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Shengli SL-808A Leakage Detector (latest version) for Buried Pipelines

【Function and Purpose】

Function:

The leakage detector for buried pipelines can work not only on the ground above the pipeline but also for the detection of pit and wells nearby the pipeline. It can detect leakage of such combustible gases as petroleum liquefied gas, artificial town gas and natural gas, which is the indispensable leakage detection equipment in the gas industry in China.

Purpose:

1. Detection of leakage points on underground gas transportation pipelines of urban gas companies;

2. Accurate location of leakage points on long transportation pipelines of gas production plants and gas transportation companies;

3. Search for underground pipelines of natural gas purification plants, chemical plants, gas stations, etc., and detection of underground pipeline joints and valve points.

【Characteristics】

1. A handheld probe is used to detect leakage of ground and underground combustible gases;

2. Alarm sounds when the leakage gas of underground pipeline reaches the concentration for alarming;

3. The built-in rechargeable lithium battery pack;

4. The most advanced sensor and getter pump are used to avoid interference by the volatilization gas of bituminous pavement and by the vehicle exhaust, featuring low temperature resistance, high sensitivity and reliability;

5. Suction-type leakage detection, high sensitivity, and quick response;

6. It can detect the leakage condition on the ground just after power-on and calibration, easy to operate;

7. The alarm tone varies with the concentration, no need for the operator to pay attention to the displayed value;

8. Zero adjustment function;

9. LCD display.

【Primary Technical Parameters】

Power supply: 7.4V lithium battery pack

Detection range: 0-100PPM, and 0-10000PPM;

Set point of alarming: 100PPMstart continuous tone alarming;

Response speed: Approximately 7 seconds90% 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:-1040°C

Minimum resolution: 5PPM

SL-808A applicable to urban gas (the main component of methane);

Storage temperature: -10°C+50°。

【Detection Principles and Methodology 】

    In case of the combustible gas leakage due to the corrosion or rupture of underground pipelines, the gas suffuses and spreads to the ground, and has the largest concentration right over the leakage point. Based on that, the leakage detector has the gas-sensitive probe move above the pipeline, and when the probe gets in contact with the combustible gas, the reading on the meter increases quickly to generate an alarming signal. Adjust the sensitivity to determine the area with the maximum concentration, in order to locate the leakage accurately.


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