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1. How to calculate the installation of flow meter diameter reduction
1. Flow rate, viscosity, diameter reduction hole thickness, and section ratio were obtained to obtain the internal flow field variation laws under different simulation conditions, and numerical simulation calculations were also used.
2、 A flowmeter, also known as a flow meter, measures the instantaneous flow rate and cumulative volume of a liquid, and can also quantitatively control the liquid. It has the characteristics of high accuracy, long service life, and easy operation and maintenance.
2. Do vortex flowmeters have requirements for straight pipe sections?
Vortex flowmeter does have straight pipe section requirements, as follows:
1. Straight pipe section: To ensure measurement accuracy, the length of the upstream straight pipe section of the vortex flowmeter needs to be at least 15D, and the length of the downstream straight pipe section needs to be at least 5D (D is the nominal diameter of the pipeline)
2. Shrinkage section: In reduced diameter pipelines, the short code vortex flowmeter also requires an upstream straight pipe section length of at least 15D and a downstream straight pipe section length of at least 5D
3. Expansion section: For expanded diameter pipelines, the length of the upstream straight pipe section of the vortex flowmeter needs to be at least 15D, and the length of the downstream straight pipe section needs to be at least 5D
4. Bend position: If the vortex flowmeter is installed behind the bend, there should be at least a 25D straight pipe section. 5. Double bend: In the case of a double bend, the length of the straight pipe section should be at least 50D Valve posi
Is it possible to use DN32 flowmeter for DN40 pipes?
Yes, in order to meet the flow range and ensure measurement accuracy, a variable diameter flange can be connected.
.4. How to determine the diameter in the selection of E+H flow meters
Several principles
1. If the flow meter is based on electromagnetic or vortex flow principles, it should be operated at an appropriate linear velocity. The flow velocity range of gas and liquid is different. You can refer to the E+H selection table for details.
2. In principle, the instrument diameter should not be larger than the pipeline, and it can be slightly reduced (pay attention to the straight pipe section).
. For example, DN80 flow meters can sometimes be used for DN100 pipelines, but DN50 flow meters are not recommended. The main focus is on checking the pressure loss of the flow meter to avoid interference with the process. Be sure to pay attention to the actual size of the process pipeline, such as DN150=outer diameter 159, wall thickness 4.5. If a wall thickness of 2 is not a big problem, then a wall thickness of 15 must be consulted with the manufacturer to see if it has any impact. 3. The selection of all flow meters is an important task that cannot be overlooked, and can be entrusted to pre-sales engineers from reputable ma
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