In the water balance test, the meter measurement method, the weir measurement method and the volume citrus method are used for the measurement of water quantity.
- Meter measurement method
(1) Water meter measurement is the main method of water balance test. At present, the flow rate water meter is widely used. According to the different states of the counting parts, there are two types of flow rate water meters: dry type and wet type.
- Weir measurement method
The weir measurement method is a method of using a thin-walled metering weir to measure the water flow of an open channel. According to the shape of the overflow outlet of the metering weir, it is usually divided into triangular weir, trapezoidal weir and rectangular weir. This determination method has no special requirements for water quality, but the measurement accuracy is low.
- Volumetric method
The volume method is to use a tank or pool of known volume to measure the volume of the inflowing liquid within a certain period of time, and calculate the amount of water to be measured.
The volumetric method has the advantages of simple operation, accurate measurement, and no special requirements for water quality to be measured.
The calculation formula of the volumetric method to measure the amount of water is as follows: Q=V/T
In the formula, Q-flow rate, m3/s; T-measurement time, s; V-liquid volume flowing into the tank or pool within a certain period of time, m3.
In addition to the water measurement methods commonly used in the water balance test of the above three industrial enterprises, the methods that can be used to measure the water quantity are:
(1) Estimate the water volume according to the pump characteristic curve;
(2) Estimate the water volume according to the rated water volume on the nameplate of the water equipment;
(3) Use the analogy method and the substitution method to estimate the amount of water;
(4) Use theory or experience to estimate water volume;
(5) Use the empirical method and the intuitive judgment method to estimate the water volume.
Zhejiang Shengdi Technology Co., Ltd. is a manufacturer mainly producing Water Meter Measurement Bench and other related products. If you are interested, welcome to consult.
