Selection, Installation and Use of Diesel Flow Meters

Abstract: The information on the selection, installation and use of diesel flowmeters is provided by excellent flowmeter and flowmeter manufacturers. 1. The direction of installation of the diesel flow meter should make the direction of the arrow shown on the instrument shell consistent with the direction of liquid flow, and the installation position should be paid attention to for easy reading. 2. Diesel flow meter should be installed at room temperature as much as possible, and should not be installed in harmful gas and strong heat. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of the selection, installation and use of diesel flowmeters. 1. The direction of installation of the diesel flow meter should make the direction of the arrow shown on the instrument shell consistent with the direction of liquid flow, and the installation position should be paid attention to for easy reading. 2. The diesel flow meter should be installed at room temperature as much as possible, and should not be installed in the place of harmful gas and strong heat radiation, so as to prevent the damage to the counter part of the meter. 3. The oval gear shaft in the diesel flowmeter instrument should be installed in a horizontal position as much as possible, that is, the dial should be installed in a vertical position (the division '0' should be above) to reduce the friction between the oval gear and the housing and reduce the wear of parts. Due to the different installation positions, in order to facilitate reading, the counter (meter head) can be rotated 90° or l80°. 4. Before installing the diesel flowmeter meter, 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 meter to prevent impurities from entering the meter. 5. The diesel flow meter meter should be installed at the outlet end of the pump, and the flow regulating 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 diesel flow meter is in use, the meter should be filled with liquid. The liquid to be measured should not be mixed with gas, otherwise the mixed volume of gas and liquid will be measured, which will make the measurement inaccurate. If the liquid is mixed with gas, a gas separator must be installed in front 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 the oval gear 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. The starting flow of the flowmeter is about 2% of the maximum flow, and the normal working flow is preferably 70% to 80% of the maximum flow. 9. When used to measure high viscosity liquids, the liquid is generally heated to reduce the viscosity, and then circulated in the pipeline. When the meter is deactivated, the liquid filled in the meter cools and becomes viscous. If it is to be activated again, the liquid must be heated with steam outside the meter body, and the viscosity of the liquid in the meter can be reduced before it can be used. Otherwise, the mucus will bite the transmission parts and cause damage to the meter. 10. The temperature of the liquid to be measured should not be higher than the specified value, and the meter will even be stuck if it exceeds the specified value. Liquid temperature changes can also cause additional errors that affect viscosity. In addition, the increase in temperature also increases the volume of the crescent-shaped space, which makes the instrument 'go slow'. When the measuring chamber is cast iron and the oval gear is cast aluminum, the additional error is +0.14%/100°C. 11. Each instrument is calibrated with No. 7 mechanical oil at room temperature when it leaves the factory. The viscosity of the oil at room temperature is about 10 centipoise. 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 to use sweeping steam and water to pass through the meter. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Selection, Installation and Use of Diesel Flow Meters'

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