Precautions for installation and wiring of metal rotameter

Abstract: The information on the installation and wiring of metal rotor flowmeters is provided by excellent flowmeter and flowmeter manufacturers. Many sites in industrial production need to use metal tube rotameter, so how to install the metal tube rotameter correctly, and what should be paid attention to in wiring, the following is a detailed introduction. 1. The special requirements of the metal rotameter manual will be Safe flow. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following are the details of the article on the installation and wiring of metal rotor flowmeters. Many sites in industrial production need to use metal tube rotameters, so how to install metal tube rotameters correctly, and what should be paid attention to in wiring, let's introduce them in detail. The flow is installed on the pipe. 2. The meter head of explosion-proof metal rotor flowmeter must be powered off before opening the meter case. 3. Open the cover of the remote signal box, and after wiring as shown in the figure, be sure to tighten the cover or cover fastening screws to prevent dust and drips. 4. After the metal rotor flowmeter cable passes through the introduction device, tighten the compression nut to fix the cable. If the compression nut is not used, it can be made on the cable pipe. 5. Thread M18×1.5 Screw directly into the cable entry holder. 6. The metal rotor flowmeter should be installed vertically on the pipeline without vibration, and there should be no obvious inclination, generally not more than 5 °C, otherwise it will bring undue errors to the measurement. 7. The control valve of the metal rotor flowmeter must be installed at the outlet of the flowmeter, so that the medium is filled with the part of the pipeline that measures the flow. 8. The front end of the flow meter inlet should have a 10DN straight pipe section, and the outlet end should have 5DN or>250mm straight pipe section. DN is the nominal diameter. 9. If the measured medium contains magnetically conductive particulate matter, a magnetic filter should be installed to ensure the normal use of the metal rotor flowmeter. 10. In order to facilitate disassembly, a bypass pipeline should generally be provided. 11. For the flowmeter with remote transmission, the input wire should not be arranged in parallel with other power lines, and shielding should be considered to prevent external magnetic field interference from affecting the flow rate of the metal rotor flowmeter. 12. The intrinsically safe explosion-proof metal rotor flowmeter must be connected with safety barriers such as LB803S, and the wiring should be strictly according to the wiring diagram. For the detailed installation instructions of the safety barrier, refer to the instruction manual of the product manufacturer. 13. If the pointer of the metal rotor flowmeter is unstable, the cause is the unstable flow rate, and the damped flowmeter provided by the manufacturer can be used. At the same time, the possibility of two-phase flow in the medium should also be considered. Phase and gas phase exist at the same time) It is the main factor that produces float beating. In order to prevent the float from violently impacting the amount, the bypass valve should be opened first, and then the inlet and outlet valves should be opened when opening the flowmeter. When there is no bypass valve, the inlet valve of the instrument should be opened first, and then the outlet valve of the instrument should be opened slowly, especially when the metal rotor flowmeter is used for gas measurement, since the pressure at the outlet of the instrument is very low, the inlet valve of the instrument must be fully opened. And rely on the meter outlet valve to adjust the flow. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Precautions for Installation and Wiring of Metal Rotameter Meters'

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