In order to make the metal float flowmeter work properly and can achieve a certain measurement accuracy, the following points need to be noted when installing the flowmeter.
1, metal float flowmeter must be installed vertically in the pipeline without vibration. Liquid flow from the bottom up through the flowmeter, and the vertical degree is better than 2 °, level installation when the horizontal angle of intersection is better than 2 °.
2, in order to facilitate maintenance and replacement of the flowmeter, clean up the measurement pipeline, the metal float flowmeter installed in the process pipeline should be installed with a bypass pipeline and bypass valve;.
3, metal float flowmeter inlet should be 5 times the length of the pipe through the straight section, the export should be 250mm straight pipe section.
4, if the material contains ferromagnetic substances, should be installed magnetic filter; if the material contains solid impurities, should be considered in the valve and straight pipe section between the installation of filters;.
5, when used for gas measurement, should ensure that the pipeline pressure is not less than 5 times the pressure loss of the flowmeter, in order to make the float of the air glass float flowmeter work steadily.
6, in order to prevent the flowmeter deformation caused by the pipeline, the flange of the process pipeline must be coaxial with the flange of the flowmeter and parallel to each other, pipeline support to prevent pipeline vibration and reduce the radial load of the flowmeter, the regulator in the detection system should be installed in the flowmeter downstream.
7, measuring gas, if the gas in the flowmeter outlet directly out of the atmosphere, the outlet of the instrument should be installed in the gate valve, otherwise it may produce air pressure drop at the float and cause data loss frame.
8, the installation of PTFE lined meter, flange nut do not just not the same screwed too tight, to prevent the oval gear flow meter processing PTEF lining deformation.
9, containing liquid crystal display meter, to try to avoid direct sunlight display, to prevent the reduction of liquid crystal use period; containing lithium battery powered meter, to try to avoid direct sunlight, high temperature environment (≥ 65 ℃) to prevent the reduction of lithium battery volume and life.
10, for small diameter and low flow rate material flow measurement; reliable work, low maintenance, long life; for straight pipe section requirements are not high; wider flow rate than 10:1; multi-line large LCD display, optional on-site instantaneous / cumulative flow display, can be backlit dual-axis sensitive labeling; non-contact magnetic coupling drive.
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