{ "culture": "en-US", "name": "", "guid": "", "catalogPath": "", "snippet": "", "description": "The feature uses points to represent data and has five subtypes; flume, magnetic, sonic, venture, and weir. A flume is a fixed hydraulic structure that under free-flow conditions force flow to accelerate in such a way that the flow may be characterized by a known relationship between the sewage level at a single specified location and flow rate. A magnetic meter has a field that is applied to the metering tube, which results in a potential difference proportional to the flow velocity perpendicular to the flux lines. A sonic meter is a volumetric flow meter which requires particulates or bubbles in the flow. A venture is a hot and cold water meter capable of passing some small particulate matter. A weir is a structure consisting of an obstruction such as a dam or bulkhead placed across the open channel with a specially shaped opening or notch. The weir results an increase in the water level, or head, which is measured upstream of the structure.", "summary": "", "title": "Meter", "tags": [], "type": "", "typeKeywords": [], "thumbnail": "", "url": "", "minScale": 0, "maxScale": 0, "spatialReference": "", "accessInformation": "Baltimore County, Maryland Department of Public Works", "licenseInfo": "" }