Flow Meter Animation | Flow Meter Front Five and Rear Three, Five Finger Arrow Front or Arrow Rear?

『Flow meter animation』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)

1. Orifice Flow Meter

Classification: Education/Science>>Science and Technology>>Engineering Technology Science Problem Description: Who will talk about the knowledge related to orifice flow meters? Thank you. Analysis: Hehe Chemical Principles. The structural principle of orifice flow meters is to install an orifice plate on the pipeline, and pressure measuring tubes are connected on both sides of the orifice plate, which are respectively connected to U-shaped differential pressure gauges. Orifice flowmeter utilizes the throttling effect of fluid passing through sharp holes to increase flow velocity and decrease pressure, resulting in a pressure difference before and after the orifice plate, which serves as the basis for measurement. If the diameter of the pipeline is d1, the diameter of the sharp hole in the orifice plate is d0, the diameter of the constriction formed by the fluid flowing through the orifice plate is d2, and the fluid density is ρ, the velocity and pressure at the interface I and II, that is, the pressure measuring conduit in front of the orifice plate and the constriction are u1, u2 and p1, p2, respectively. According to the Bernoulli equation, without considering energy loss, it can be obtained that: (u22-u12)/2=(p1-p2)/ρ=gh or (u22-u12) 1/2=(2gh) 1/2. Due to the variation of the constriction position with the flow velocity, the cross-sectional area S2 is difficult to know, while the area of the orifice is known. The position of the pressure measuring port is also known after the equipment is manufactured. No change, therefore, u0 at the rolling diameter of the orifice plate hole is used instead of u2, taking into account the energy loss caused by local resistance of the fluid, and correct

ed with a correction coefficient C. Then there is: (u02-u12) 1/2=C (2gh) 1/2. For incompressible fluids, according to the continuity equation, there is: u1=u0S0/S1. After sorting, we can obtain: u0=C * (2gh) 1/2/[1- (S0/S1) 2] 1/2. Let C0=C/[1- (S0/S1) 2] 1/2, which can be simplified as: u0=C0 (2gh) 1/2. The volumetric flow rate of the fluid can be calculated based on u0 and S2: Vs=u0 * S0=C0 * (2gh) 1/2 [m3/s] or Vs=C0 * S0 * [2GR (ρ r - ρ)/ρ 1/2 [m In equation 3/s: the reading of the R-U differential pressure gauge, [m]； ρ r - the density of the indicating liquid in the differential pressure gauge, [kg / m3]； C0- Orifice flow coefficient, which is determined by the shape of the orifice plates sharp hole, the position of the pressure gauge, the ratio of the aperture to the diameter, and the Reynolds number. The specific value is determined experimentally. When d1/d2 is constant and Re exceeds a certain value, C0 approaches the constant value. Generally, standardized orifice flow meters in industry are used under flow conditions where C0 is the constant dispersion number. Take a look at the animation below, I believe it will be helpful to you 210.41.4.20/Maebeis course/29/%CD%F8%C2%E7%BF%CE%B3%CC%CD%F8%D5%BE%CE%C4%BC%FE/11/flash/kongban.swf

2. How to read a rotor flowmeter? Why?

The reading method for the rotor flowmeter is as follows: For the sub flowmeter reading method, stand in front of the flowmeter, with your eyes parallel to the float, and move your line of sight horizontally to the left until you see the outline of the float touching the positioning line. The corresponding reading value is at the intersection of the positioning line and the horizontal scale in the middle of the float.. A rotor

Flow Meter Animation | Flow Meter Front Five and Rear Three, Five Finger Arrow Front or Arrow Rear?

1. Orifice Flow Meter

2. How to read a rotor flowmeter? Why?

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