water velocity meter

1. Request professional English translation between water meters. A water meter, also known as a water meter, is a device that measures the amount of water used. Commonly seen on the user end of tap water, its degree is used as the basis for calculating water bills. Water meters typically measure in cubic feet (ft ³) or cubic meters (m ³). So "water meter room" can be translated as: Water meter room or Room of Water metering. Water meter readings from right to left are 0.1 liters, 1 liter, 10 liters, 100 liters, 1 cubic meter (1000 liters), 10 cubic meters, 100 cubic meters, 1000 cubic meters. Types of displacement water meters, displacement water meters, velocity water meters, jet meters (single jet and multi jet), turbine meters, propeller meters, and MAG meters. Composite water meters include electromagnetic meters, ultrasonic meters, and how to calculate the required water meter diameter for pipelines. National Standard of the Peoples Republic of China for Cold Water Meter Part 1: Specifications Measuerment of water flow in closed conduits GB/T 778.1-1996 -Meters for cold potable water eqv ISO4064-1:1993 -Part 1:Specifications This standard is part 1 of GB/T778 and covers terminology, technical characteristics, metrological characteristics, and pressure loss This standard is applicable to water meters of different measurement levels (Chapter 5) with a commonly used flow range of 0.4000m3/h, a maximum allowable working pressure (MAP) equal to or greater than 1MPa, and a maximum allowable temperature (MAT) of 30 ° C This standard is only applicable to volumetric and velocity water meters This part of GB/T 778 must comply with regulatory requirements. 2. The provisions contained in the following standards, which are referenced in this standard, constitute the provisions of this standard At the time of publication, all versions shown are valid All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards GB 4208-93 Degrees of Protection Provided by Enclosures (IP Code) GB 4216.4-84 10 bar Grey Cast Iron Pipe Flange Dimensions GB 7306-87 Pipe Threads Sealed with Threads GB 7307-87 Non Threaded Sealed Pipe Threads 3 Definitions This standard adopts the following definitions: 3.1 Volumetric meter is a water meter installed in a closed pipeline, consisting of chambers of known volume that are gradually filled and discharged with fluid and a mechanism driven by the fluid By calculating the volume of water flowing through the device, the volume of water flowing out can be accumulated. 3.2 Velocity meter is a water meter installed in a closed pipeline, consisting of a moving element and directly moved by the water flow velocity The motion of the moving element is transmitted to the indicator device by mechanical or other means, and the volume of water flowing out is calculated. 3.2.1 Woltmann meter is a water meter composed of a spiral wing rotor rotating around the flow axis. 3.2.2 Single jet and multi jet meters are a water meter composed of a turbine rotor rotating around an axis perpendicular to the water flow If the beam impact is at a certain point on the edge of the rotor, it is called a single beam water meter; If multiple streams simultaneously impact several points at the edge of the rotor, it is called a multi stream water meter. 3.3 Flow rate: The volume of water passing through the water meter is the quotient of the time required for this