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Commercial/Industrial meters: Sizes range from 1½ inches to 12 inches or larger, depending on flow requirements and system design. [8] Europe: Diameters are defined in nominal diameter (DN), measured in millimeters. Common sizes include: Residential meters: DN15 (15 mm), DN20 (20 mm), and DN25 (25 mm). [9]
Moisture meters are measuring instruments used to measure the percentage of water in a given substance, as physical properties are strongly affected by moisture content and high moisture content for a period of time may progressively degrade a material. Meters exist for various substances, including wood, building materials, concrete, and soil.
The magnetic flow meter requires a conducting fluid, for example, water that contains ions, and an electrical insulating pipe surface, for example, a rubber-lined steel tube. If the magnetic field direction were constant, electrochemical and other effects at the electrodes would make the potential difference difficult to distinguish from the ...
Project Neptune is a water distribution project in the United Kingdom with the goal of establishing an optimized and more sustainable system for water distribution. The project was officially announced in April 2007, and received a budget of £2.7 million.
The Measuring Instruments Directive 2014/32/EU, formerly 2004/22/EC, is a directive by the European Union, which seeks to harmonise many aspects of legal metrology across all member states of the EU. [1]
Survey meters in radiation protection are hand-held ionising radiation measurement instruments used to check such as personnel, equipment and the environment for radioactive contamination and ambient radiation. The hand-held survey meter is probably the most familiar radiation measuring device owing to its wide and visible use.