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What are the flow regulation methods for metering pumps?
2. What is the working principle of an elliptical gear flowmeter?
The working principle of an elliptical gear flowmeter is based on the rotational motion of the elliptical gear to measure fluid flow.. It calculates flow by measuring the number of revolutions of an elliptical gear per unit time. The elliptical gear in the flowmeter is perpendicular to the direction of fluid flow. When the fluid pushes the gear to rotate, the rotational speed of the elliptical gear is proportional to the flow velocity of the fluid. Through this method, the elliptical gear flowmeter can accurately measure fluid flow and quantify it. The elliptical gear flowmeter is mainly composed of an elliptical gear pair and a counter. When the fluid passes through the flowmeter, it will drive the elliptical gear to rotate. The design of elliptical gears ensures that their rotational speed is proportional to the flow velocity of the fluid. This relationship is based on the principle of momentum conservation in physics, which states that changes in the momentum of a fluid will cause changes in the driving force, which in turn drives the rotation of an elliptical gear. Every time the elliptical gear completes a rotation, a pulse signal is triggered and captured by the counter. By recording the number of pulse signals received within a unit of time, the counter can calculate the volume or mass of fluid flow. This counting method has high accuracy and can accurately reflect changes in fluid flow rate in real time. In addition, the elliptical gear flowmeter needs to be used in conjunction with a display instrument to observe and record measurement results. The display instrument
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3. Description of RS485 Communication Protocol for SKLC Series Elliptical Gear Flowmeters of SUKO Instruments
Description of RS485 Communication Protocol for SKLC Series Elliptical Gear Flowmeters of SUKO Instruments The RS485 communication protocol for SKLC Series Elliptical Gear Flowmeters of SUKO Instruments is mainly based on RTU mode and provides multiple communication parameters and register addresses for reading and writing data.
. Here is a detailed explanation of the communication protocol:1. Communication parameter settings Communication mode: RTU mode Baud rate: default to 9600bps (can be set to 2400, 4800, 9600, or 19200bps) Data bits: 8-bit Check bits: no check (can be set to no check, odd check, or even check) Stop raising and dismantling bits: 1-bit Frame Check field: cyclic redundancy check (CRC), performs check on all message contents
2. Communication frame format Sending frame format: (except for CRC check, all sent words are first high byte and then low byte): Slave address: 1 byte Function code: 1 byte Data: 0 to 252 bytes CRC: 2 Byte (CRC low byte and CRC high byte)
III. Communication parameter configuration register Communication parameters can be configured by