Precautions for installation of oval gear flow meter

Abstract: The information on the installation precautions of oval gear flow meter is provided by the excellent flow meter and flow meter manufacturer and quotation manufacturer. 1. The installation direction of the instrument should make the direction of the arrow shown on the instrument shell consistent with the liquid flow direction, and the installation position should be paid attention to to facilitate reading. 2. The instrument should be installed at room temperature as much as possible, and should not be installed in the occasion of harmful gas and strong heat radiation to prevent the instrument. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of the article on installation precautions for oval gear flowmeters. 1. The installation direction of the instrument should make the direction of the arrow shown on the instrument shell consistent with the liquid flow direction, and the installation position should be paid attention to to facilitate reading. 2. The instrument should be installed at room temperature as much as possible, and should not be installed in the case of harmful gas and strong heat radiation, so as to prevent the damage to the counter part of the instrument. 3. The asphalt shaft in the instrument should be installed in a horizontal position as much as possible, that is, the dial should be installed in a vertical position (dividing“0”should be above) to reduce the friction between the asphalt gear and the housing and reduce the wear of the parts. Due to the different installation positions, in order to facilitate reading, the counter (head) can be rotated 90°or 180°. 4. Before the instrument is installed, the pipeline must be thoroughly cleaned. In the entire pipeline system, if there is no strict filtering device, a filter should be installed in front of the instrument to prevent impurities from entering the meter. 5. The meter should be installed at the outlet of the pump, and the flow control valve should be installed downstream of the meter. When using, first open the upstream shut-off valve, and then slowly open the downstream flow regulating valve or shut-off valve. It is strictly forbidden to open or close suddenly. 6. When the meter is in use, the meter should be filled with liquid. There should be no gas mixed in the liquid to be measured, otherwise the mixed volume of gas and liquid will be measured, which will make the measurement inaccurate. When the liquid is mixed with gas, a gas separator must be installed upstream of the instrument. 7. The flow rate in the pipeline should not increase or decrease sharply, and phenomena such as pipeline vibration, hydraulic shock and rapid pressure fluctuation should be avoided, otherwise it will affect the normal operation of the instrument. 8. When the flow rate exceeds the specified maximum flow rate, the wear of asphalt increases with the increase of rotation speed, and the pressure loss increases sharply, so it should be avoided. Below the minimum flow rate, although it can still be measured, the error will increase. 9. When measuring high-viscosity liquid, the liquid is generally heated to reduce the viscosity, and then circulated in the pipeline. When the meter is out of use, the liquid filled in the meter becomes viscous due to cooling. If it is to be activated again, it must be heated outside the meter body with steam or other methods to reduce the viscosity of the liquid, and it can be used after the viscosity of the liquid in the meter is reduced. Otherwise, the mucus will bite the transmission parts and cause damage to the instrument. 10. The temperature of the liquid to be measured should not be higher than the specified value, otherwise, the instrument will not work normally, or even stuck. Liquid temperature changes can also cause additional errors that are affected by viscosity. In addition, the increase in temperature also causes the volume of the crescent space to increase, which is the instrument“walk slowly”, the measuring chamber is cast iron, and the oval gear is cast aluminum, the additional error is +0.14%/100℃. About 10mpa.s. If the viscosity of the liquid used by the user is quite different from this, the double-layer gear can be replaced. 12. It is strictly forbidden for steam and water to pass through the instrument. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Oval Gear Flow Meter Installation Precautions'

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