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Chapter 2. Installation
Chapter 1 . Introduction
1.1.
Overview
Fugitive methane emissions reduction is one of the most pressing needs in the Oil & Gas industry today.
Traditional measurement practices are often inaccurate and inefficient – putting you at risk of dangerous,
damaging and costly leaks. In response to this, BHGE has developed a unique and flexible digital platform, that
integrates continuous 24/7 monitoring ground-based sensors.
The LUMEN TERRAIN is a high accuracy fugitive methane gas leak detection system that will continuously and
remotely detect leaks without the need for human intervention. This ground-based monitoring technology provides
real-time quantification and notification of methane emissions both indoors and outdoors while enabling prescriptive
analytics for preventative maintenance.
1.2.
Theory of Operation
The LUMEN TERRAIN uses metal oxide semiconductors to detect methane. When semiconductor particles are
heated, they absorb methane which changes the resistance of the semiconductor. This change is a linear and
proportional relationship to the methane concentration. Once calibration has been done at the factory,
measuring the semiconductor's resistance will provide the methane concentration.
In order to accurately pin-point the location of fugitive methane emissions, an array of these methane detectors
needs to be spread around an area of interest. The sensors are mounted onto the Sensor Nodes of the system,
which will transmit data back to the Base Station and to the cloud for analysis.
1.3.
System Components
The system contains a main hub – the Base Station, and several other smaller units – the Sensor Nodes.
1.3.1.
Base Station
Being the hub of the system, the Base Station is responsible for collecting data transmitted by the Sensor Nodes
and sending this data into the cloud where it will be analyzed.
The Base Station consists of the stainless steel enclosure, the 50W solar panel, and the weather station. The
stainless steel enclosure contains the electronic boards, wireless router, battery, and a magnetic stylus to reset
the Sensor Nodes. Primary power comes from the solar panels while the batteries will act as a backup during
nighttime or low sunlight. The battery is expected to keep the system running for 7 days without solar power if
data is transmitted twice a day.
1.3.2.
Sensor Node
The Sensor Nodes contain the metal oxide semi-conductor methane sensors and temperature/humidity sensors.
Ideally, multiple Sensor Nodes are to be installed in an array that is spread out in the area of interest to best
pinpoint the location of fugitive methane emissions.
Each Sensor Node contains the electronic enclosure and a 30W solar panel. Inside the electronic enclosure is a
battery that is charged by the solar panel. Primary power comes from the solar panel, while the battery can
supply power for the Sensor Node for 7 days at data transmission rate of twice per day.
Chapter 2 . Installation
14
LUMEN TERRAIN User Manual
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