Oval gear flowmeter installation and structure of the scale

Abstract: the installation of the oval gear flowmeter scale and structure of information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. 1, before installation shall be thoroughly clean the pipe and filter in front of the meter installation, in order to prevent debris into the meter. When measured liquid containing gas, should install air separator. 2, should pay attention to must take meter oval gear shaft United States level, namely table. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the installation of the oval gear flowmeter scale and structure of the article details. 1, before installation shall be thoroughly clean the pipe and filter in front of the meter installation, in order to prevent debris into the meter. When measured liquid containing gas, should install air separator. 2, should pay attention to must take meter oval gear shaft United States level, namely the dial and perpendicular to the plane. Flow adjustment and start, shut off the valve should be installed in the import and export of flow meters respectively. 3, flowmeter shell on the arrow pointing in the direction of piping shall be installed with the liquid flow in the same direction. 4, the continuous flow of pipeline, the installation of flowmeter horizontal line should be equipped with a bypass valve, in order to regular cleaning and maintenance. On the vertical pipe flow meter, shall be installed in the bypass duct to prevent debris into the instrument. 5, under the condition of correct installation of the flow meter, for ease of reading, can according to need to install the counter rotate for 180 o or 90 o requirements as shown in figure 3 (2) use notice: 1. It is forbidden to water test meter. 2. Start or stop, open/close the valve should be slow, to prevent sudden shock, and shall prevent backflow. 3. Flowmeter for maintenance, shall not rear cover removed, in order to avoid reloading the accuracy of change and influence to accuracy. Ten, error calculation and adjustments ( A) Basic error of flowmeter, by the verification flow point of all measured values respectively: (press type calculation Volumetric method) E = Vm-V / v *; E - meter error (100% Generally refers to the cumulative error) Two significant figures. Vm - meter measured values ( The shown value) V - were revised, flowmeter standard device measured values ( The actual value) From the basic formula of error, when the Vm > V, flowmeter basic error for & other; ＋” Value, said flowmeter is going faster. Vm < V, flowmeter fundamental error for & other; －” Value, said flowmeter walked slowly. In order to make the error of flowmeter, within the basic error limit is often the need for error. By changing in counter namely inside a pair of adjusting gear ( Adjust the tooth) To change the mechanical transmission ratio, so that the flow meter's worth to adjust. Adjust error can't change the flow characteristic of the flowmeter, the characteristic curve of artificially in a new coordinate system. In general, the prescribed ( Or actual use) Flow within the scope of its zui and zui small flow check point of the basic set accuracy range of error is not more than the basic error limits, all can be adjusted by the error flowmeter qualified basic error. Flow meter has been used, usually with the adjustment of the original gear set first for error detection, and then according to the error of the specific situation to adjust error. Working principle and structure: the flowmeter is made up of metering box and packed in a pair of elliptical gear metering box and the upper and lower cover plate only at the beginning of a sealed cavity ( Due to the rotation of the gear, so it's not absolutely sealed) As a displacement calculating unit. When measured liquid pipelines into the flow time, the pressure difference generated in the import and export of drive gear pair of continuous rotation, constantly put the only at the beginning of the cavity after measuring the liquid to the exit, the elliptical gear revolutions and the product of four times every time displacement is measured the amount of liquid flow rate above is all there is in this article, you are welcome to inquire me factory flowmeter selection, quotation, etc.

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