Sistema de supervisión de emisiones MVS 304-EM

de concentraciónde gasde medición

Measurement of emissions using the coverage method or suction methodThe EU Methane Emissions Regulation (Regulation (EU) 2019/942) requires metrological recording of methane emissions during the technical operation of gas transport and distribution networks.Drilling MethodThe measurement of emission quantity using the suction method serves to precisely detect methane emission rates at identified leak points in the pipeline network. The measurement values obtained with this method correspond to the measurement at the leak point underground and should not be compared with surface measurements. The measurement setup is shown in the image.Up to six probes can be connected. In the MVS 304-EM, the flow rate and the concentration in the aspirated gas flow are measured with the gas analyzer.Coverage MethodThe measurement of emission quantity using the coverage method serves to precisely detect methane emission rates on the surface. The measurement values obtained with this method do not correspond to the values measured at the leak point underground. The measurement setup is shown in the image.In the MVS 304-EM, the flow rate and the concentration in the aspirated gas flow are measured with the gas analyzer. This method is characterized by its speed and simplicity in field applications. The measurement is completed in a short time.If you want to measure the amount of gas escaping directly at the leak point, this can be done with the MVS 304-EM and a coverage blanket after excavation.Calculation of emission quantityFor determining the emission quantity and creating documentation for each measurement, a personalized Internet portal is available for the customer.Measurement of emission quantities in installationsHigh Flow Sampling (HFS) for pipeline components and measurement of emission quantities in the entire installation.Our HFS wipes are available in various sizes and can be hermetically attached to fittings, valves, vents, or GRDM installations using surrounding Velcro fasteners. The suction hose is connected via quick couplings, and the different sizes ensure that both point sources (e.g., stuffing boxes, flanges, pressure gauges) and larger accessories are completely included in the enclosure. The procedure corresponds to the HFS method established in the industry for quantitative recording of volatile emissions.In high-flow sampling, the entire leak plume is aspirated together with the ambient air at a high flow rate. Complete sealing/masking as in bagging is not necessary. The device records the total flow and methane concentration and calculates the emission quantity in g/h.Measurement procedure (practical guide):Place the cloth without tension and with as few air currents as possible, fix the cord.Connect the MVS304-EM to the quick coupling.Start the measurement and wait for stabilization; typical individual measurements last a few minutes to ensure stable concentration and flow values.Take photos of the measurement setup.Upload the data to the portal.Application cases and standard notes:The method is suitable from flanges to GRDM installations and is included in European guidelines for methane quantification in the gas transport network, distribution network, and storage/LNG (CEN/TS 17874:2022: Identification and quantification of relevant sources for emissions, methodological steps). Within OGMP 2.0, HFS is recommended as a source/component-level measurement approach for higher value reporting levels (level 4/5). Current technical guidance documents and templates support uncertainty analysis and data storage.Quality assurance/best practices:Ensure complete recording, select the enclosure size so that the entire leak is within the suction field, avoid escape paths by checking complete suction at the edges.Why enclosures with Velcro/quick coupling?The mechanically robust Velcro design allows for quick and repeatable sealing on units of different shapes, while quick couplings reduce preparation time and the risk of leaks when connecting the hose. This enables fast and reproducible HFS measurements in the field, a recommended procedure for service providers for accurate methane quantification.Advantages for network operators: The enclosures and HFS provide mass-based, source-related emission rates with documented accuracy. They can be used directly for LDAR prioritization, measure evaluation, and OGMP reporting.MVS 304-EMUp to six suction probes can be operated simultaneously at the mobile vacuum station, or alternatively, the blanket for the coverage method can be connected.The handling of the MVS 304-EM is simple and convenient. A two-stage filtration system retains water and dirt. The filter change can be carried out easily in just a few steps.Technical data MVS 304-EM:Rated voltage: 230 V - 50 HzMotor power: 0.5 kWFlow rate: max. 14 m³/hVacuum: approx. 850 mbarWeight: approx. 33 kgDimensions: L x W x H, 32 x 47 x 65 cmFlow measurement: 0-250 l/minSupply:MVS 304-EMOne coverage blanket approx. 1x2 mControl certificateInstruction manualAccessories:209.793 Probe set209.791 Suction probe expansion set (max. 6 probes connectable)204.361 Adapter for devices with 20 mm connection coupling204.442 Complete telescopic mounting kit MVS302Technical characteristics / specifications:Measurement of methane emissions using suction and coverage methodsUp to six probes connectableHigh Flow Sampling (HFS) compatibleTwo-stage filtration systemFlow rate: max. 14 m³/hVacuum: approx. 850 mbarRated voltage: 230 V - 50 HzMotor power: 0.5 kWWeight: approx. 33 kgDimensions: 32 x 47 x 65 cmFlow measurement: 0-250 l/min