Vortex flowmeter transmitter | What is a vortex flowmeter? What are the characteristics?

『Vortex flowmeter transmitter』Related information(flow rotameter|digital flow meter|balo meter|hydraulic flow meter|volumetric meter|positive displacement meter|pitot tube flow meter|displacement meter|cfm meter|variable area flow meter|inline flow meter|differential pressure flow meter|calibrated flow meter|velocity meter|paddle wheel flow meter|oval gear flow meter|anemometer hvac|multiphase flow meter|doppler flow meter|thorpe tube flowmeter|heat flow meter)

Why is there only 24V for vortex power supply? Vortex flowmeter is a type of transmitter, which mainly includes temperature, pressure, flow rate, liquid level and other categories; In addition to the interference reasons mentioned by Lead Xian upstairs, there are several other reasons:

1. Transmitter instruments need to enter the DCS or PLC system to obtain information. The most convenient connection method for these systems is a two-wire instrument (24V without power supply, the circuit is directly connected in series with a 250 ohm high excitation impedance to measure the signal).

2. The vortex flowmeter itself does not require too high power, a two-wire system is sufficient, and it can also be equipped with HART protocol, which means that two wires can have 24V+4~20mA+HART.

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3. In fact, vortex flowmeters are also powered by a 3.6V ER14505 battery, which is different from 24V applications.

4、 The transmitter is powered by 220V, and there are two main possibilities:

1. Special on-site requirements or user customization;

2、 For instruments with high power consumption such as electromagnetic flowmeters, it is not meaningful to use 24V (a 24V power supply can only carry a few instruments and the circuit pressure drop is too large). 5. For two-wire vortex flowmeters, 24V power supply refers to 10V~30V or 12~32V, depending on the manufacturer. High temperature media may cause thermal expansion or performance drift of internal components of the transmitter, thereby affecting measurement accuracy. Suggestion: Avoid direct contact of high-temperature media with the transmitter, and if necessary, use insulat

ion sleeves or extended pressure pipes. When installing horizontally, ensure that the fluid flow direction is consistent with the direction indicated on the flowmeter to prevent abnormal vortex signals. Vertical pipeline installation: Gas measurement: The fluid flow direction can be arbitrary (upward or downward), and due to the low gas density, the influence of gravity can be ignored. Liquid measurement: It is necessary to ensure that the fluid flows from bottom to top to avoid liquid phase separation or interruption of vortex signals due to gravity.

Secondly, choose a location away from the vibration source: Vortex flowmeters are sensitive to mechanical vibrations, which may cause detection components (such as piezoelectric crystals) to send signals incorrectly.

. Suggestion: The installation location should be at least 1 meter away from vibration sources such as pumps and compressors, and vibration reduction brackets should be installed if necessary. Avoid installation within 5 times the diameter downstream of pipeline bends and valves to prevent false signals caused by fluid turbulence. Stable environment requirements: The flowmeter body and connecting pipelines must be firmly fixed to avoid deformation or leakage caused by pipeline stress. Plug in flow meters must ensure that the insertion depth meets the requirements to prevent displacement of the detection components.

Third, the straight pipe section requires matching of the inner diameters of the front and rear straight pipe sections: The difference between the inner diameters of the front and rear straight pipe sections of the flowmeter and the inner diameter of the flowmeter body should be less than 3%, otherwise measurement errors may occur du

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