Emission Measurement LDEM 2000

Leak Detection and Emission Monitoring

With the REGULATION OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL on the reduction of methane emissions in the energy sector and amending Regulation (EU) 2019/942 (EU Methane Emission Regulation), the technical measurement of methane emissions during the operation of gas transmission and distribution networks becomes necessary.

LDEM integrated into a measurement vehicle with off-road capability

Vehicle-mounted systems for detecting emissions in the distribution network using atmospheric concentration and wind measurement.

The network area is driven near the pipeline without needing to stay directly above it. Wind or air currents carry the natural gas towards the vehicle. During emission measurement, walking inspections of household connections are no longer required. Due to this entirely new task, different requirements are imposed on the measuring technology, software, and the vehicle operator. Wind measurement and multiple area inspections are some of these requirements. The determination of emission quantities at the location level is another, along with the need for significantly higher baseline sensitivity. These requirements are met in practice using the Scout software and the LDEM 2000 measurement unit. The high demands are met using laser measurement technology, which operates at the resonance of methane and ethane.

Vehicle-mounted systems for checking natural gas pipelines using atmospheric concentration and wind measurement

The above-ground inspection of buried pipelines can be performed using various methods, such as the classic above-ground inspection on foot with a cover probe or vehicle-mounted above-ground inspection over the pipeline according to G465-4:2019. A new approach involves "vehicle-mounted systems for inspection using atmospheric concentration and wind measurement", according to the upcoming G465-4-III standard. A major difference is that the vehicle route is no longer bound to the pipeline, meaning the network area can be inspected without driving directly over the pipes. The inspection of household connections is performed by detecting the escaping natural gas in the air. Wind or air currents transport the gas to the vehicle, eliminating the need for household connection inspections in many areas. Due to this entirely new approach, different requirements are placed on the measuring technology, software, and the vehicle operator or gas detector. Wind measurement and multiple passes to cover the area are some of these requirements. The identification of suspected leak areas and significantly higher baseline sensitivity are others. These requirements are met in practice using the Scout software and the LDEM 2000 measurement unit. The high demands are met using laser measurement technology, which operates at the resonance of methane and ethane.

LDEM 2000

The LDEM 2000 measurement system can be installed in any vehicle, requires a maximum of 12V 1A, and weighs 4 kg, with dimensions of 325 x 270 x 195 mm.

Technical Data LDEM 2000:

• Measurement system: Laser resonance measurement
• Measurement range: 0.01 - 10,000 ppm methane in air
• Measurement range: 0.01 - 10,000 ppm ethane in air
• Sensitivity: 7 ppb methane
• Vehicle measurement speed: 50 km/h
• Sampling frequency: 16 Hz
• Nominal voltage: 12 V
• Motor power: 10 W
• Weight: approx. 4 kg
• Dimensions: L x W x H, 325 x 270 x 195 mm

Scope of Delivery:

• LDEM 2000
• Scout software
• Outdoor tablet PC
• Wind meter
• GNSS receiver
• Front probe with test unit
• Operating instructions

Accessories:

• Maintenance contract