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DT-AEC2531 Combustible Gas Monitoring Device for Underground Well Room

Short Description:

In the process of using natural gas, various equipment and devices such as pipelines, gate stations, pressure regulating equipment, valve wells, etc. are involved. These complicated gas supply equipment and pipe networks have brought many problems to the management of gas companies, especially the management of gas valve wells. Gas valve wells can cause gas leakage due to equipment aging, faults, and improper operation of personnel. However, traditional manual inspections are difficult to rush to the site for effective treatment in the first time due to the inspection density and inspection effect. All these have brought challenges to the management of gas companies.


Product Detail

Product Tags

Background

In the process of using natural gas, various equipment and devices such as pipelines, gate stations, pressure regulating equipment, valve wells, etc. are involved. These complicated gas supply equipment and pipe networks have brought many problems to the management of gas companies, especially the management of gas valve wells. Gas valve wells can cause gas leakage due to equipment aging, faults, and improper operation of personnel. However, traditional manual inspections are difficult to rush to the site for effective treatment in the first time due to the inspection density and inspection effect. All these have brought challenges to the management of gas companies.

Product advantages

1) Using advanced laser sensors (tunable laser spectroscopy (TDLAS) technology) with low false alarm and the service life is up to 5-10 years;

2) Adopt NB-IoT communication and cooperate with mainstream operators such as China mobile and telecommunications to ensure reliable communication;

3) The whole machine is designed with low power consumption and long working time, which can effectively reduce the equipment maintenance cost.

Main features

1) Large-capacity battery(152Ah) of domestic first-line brand, reliable capacity;

2) Using advanced laser sensors (tunable laser spectroscopy (TDLAS) technology, with high reliability, strong anti-interference ability, low false alarm rate and maintenance free;

3) Adopt NB-IOT wireless remote transmission solution, low power consumption, wide coverage and strong connection ability;

4) Well cover abnormal alarm and emergency treatment to prevent accidents;

5) The flooding alarm function detects the equipment status and informs the user that the equipment is in the detection empty window period.

Technical specifications

Performance

Detected gas

Combustible gas(Methane)

Detection principle

Tunable diode laser absorption spectroscopy technology(TDLAS)

Alarm error

±3%LEL

Detection range

0 100%LEL

Indication error

±3%LEL(Displayed on the access platform)

Alarm setting value

Low limit:25%LEL; High limit:50%LEL

Response timeT90)

T90≤10s

Wireless communication

NB-IoT

Detection interval

60minutes(Standard working mode)

Communication interval

24hour(Standard working mode)

Reporting time

08:00(Default)

Protection grage

IP67

Explosion proof grade

ExdibⅡCT4 Gb

Sensor storage life (under normal storage environment)

5 years

Sensor service life (typical)

5 years

 

Electrical characteristic

Power supply

Disposable lithium battery power supply(152Ah)

Operating voltage

3.6VDC

Battery operating hours (under standard operating mode)

≥3years

Continue working time after battery under voltage (under standard working mode)

15days

Environmental parameters

Environmental pressure

86kPa~106kPa

Environment humidity

≤100%RH(No condensation)

Environment temperature

-40℃~+70℃

Storage environment

Storage temperature: -20℃~+30℃, relative humidity ≤60%RH, no corrosive substances on site

Structure characteristics

Dimensions

545mm×205mm×110mm

Material

Cast aluminum

Weight

About 6kg(including battery)

Installation mode

Wall mounted: bracket hanging and fixing

Stability

100mm drop resistance (with packaging)

Boundary Dimension

Mounting Mode

6.1 Detector installation mode:
When detecting combustible gas with lower specific weight than air such as methane, the detector shall be installed as close to the wellhead as possible (the distance from the wellhead shall not be more than 30cm)

6.2 Manhole cover displacement switch installation method
The manhole cover displacement switch is perpendicular to the ground plane, and the top of the manhole cover displacement switch trigger rod is more than 2cm higher than the manhole cover (as shown in the figure below). After installation, the switch can be triggered when the manhole cover is closed.


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