In the initial installation, the magnetic permeability around the PTFE pipe float (rotor) flowmeter and the stability of the fluid should be fully considered. The characteristics should be fully considered when using it. Therefore, we install the metal pipe rotor flow in the machine. Pay attention to the following points when using the first time:
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1. When using the lining PTFE tube rotor flowmeter for the first time, after welding the butt flange of the pipe and the metal pipe float flowmeter, apply gas to purge the pipe to remove the iron waste in the pipe. In combination with other impurities, the metal tube rotameter is prevented from being jammed by some impurities during initial use or the iron impurities affect the magnetic coupling of the metal tube rotameter.
2. If it is a measurement of liquid, when opening the valve before and after the metal tube rotor flowmeter, in order to avoid the sudden opening of the valve to form an instantaneous head impact force and damage the metal tube rotor flowmeter, we require that the valve should be opened slowly when the valve is opened. .
3. If it is to measure the flow rate of the gas medium, we require that the system piping should not be pressurized by the boosting method before opening the valve. Otherwise, if the valve is suddenly opened, the float of the metal tube rotameter will instantaneously rush to the upper position of the flow meter. At the same time, it is possible to damage the metal tube rotameter, please remember to use it!
The above metal rotor flowmeter status, if the user can not eliminate it, please consult the metal tube float flowmeter manufacturer.
Lined with PTFE metal tube rotor flowmeter, it is a commonly used flow measuring instrument in the industry. It can measure gas and liquid. It adopts all-metal structure. The measuring tube material is 304 stainless steel or 316L stainless steel, and the inner lining is made of PTFE. Strong anti-corrosion performance. The metal tube rotameter has the characteristics of small volume, large measuring range and convenient use, and is especially suitable for medium flow measurement of low speed and small flow. Because of the advantages and practicability of the metal tube rotameter, it is used more and more widely in the industry. The selection is not mentioned. I believe everyone can purchase the most suitable flowmeter model. Pay attention to the installation specifications, pay attention to the installation of the lining of the PTFE pipe rotameter:
(1) The flowmeter must be installed vertically. The flow measured by the flowmeter passes through the flowmeter from bottom to top. The inlet and outlet are guaranteed to have a straight pipe section with 5 times the gauge diameter. For the newly installed pipeline, the pipeline should be flushed before installation. .
(2) In order to facilitate the repair and replacement of the flowmeter, it is necessary to connect the bypass pipeline when the instrument is installed.
(3) A valve should be installed upstream of the flowmeter, and a flow regulating valve should be installed at the downstream 5-10 times gauge diameter. For small-diameter instruments, filters should be installed upstream. If the measured medium contains magnetic substances, the magnetic filter should be installed in front of the flowmeter.
(4) When the measured medium is dirty, the pipe and float should be cleaned in time.
(5) The measurement accuracy of the metal rotameter is generally 2.5 grades and 1.5 grades. When the measurement accuracy is required to be high, the metal rotor flowmeter should not be selected.