The Leakplotter is a vehicle concept which complies with the requirements for an economic survey in pipe distribution networks by driving above a buried gas pipeline.

The total system is designed in a modular way, and therefore practically every type of base vehicle is suitable for this purpose.

Light gases escape from a leak - funnel-shaped - within the ground and through the surface.

While driving above the gas pipes a sample is taken and passed on to the measuring insert. As a result leakages within the spreading funnel are being indicated and recorded by the notebook.

LEAKPLOTTER FEATURES

System Control

• Automatic survey of connection to measuring insert
• Permanent survey of pump flow and flame status of the FID
• Permanent survey and display of pressure inside the fuel- and test-gas bottle
• Automatic zero-point adjustment
• Automatic first ignition
• Manual ignition after "flame out" signal due to high gas concentration

Data Collection

• Permanent record of actual speed and concentration
• Display of all relevant data on the main screen such as speed, concentration and alarm level
• Comments can be entered directly during the measurement
• Actual measured concentration displayed permanently

Data Archive

• The viewer mode allows comparing different measurements taken
• Recorded data are stored in a data base for subsequent treatment
• Identification of measurements by location, date and controller
• Suitable sorting to be selected
• Search function is implemented

Measuring Insert

• Flame-Ionisation-Detector (FID), selective for detection of hydrocarbon gases
• Oxidiser to eliminate disturbances caused by environmental pollution or humidity
• 40% hydrogen / 60% nitrogen fuel gas and 10 ppm methane / synth. air test gas bottles
• Bypass and water-separator for probe inlet
• Remote operation in case of PC breakdown
• Mounted into 19" rack, installed in the vehicle

Suction Unit

• Suction beam with 8 bells inclusive hose connection
• Dust filters in every bell to avoid damage to the FID unit
• Additional hose filters
• Adjustable in height
• Mounted at bumper of the measuring vehicle
• Two sections to fit into the vehicle without wasting useful space

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