Water flow controller

Water flow controller

Dynamic balance test: This experiment uses the VC63F dual channel dynamic balance instrument from Shengli Instrument, which has multiple dynamic balance methods, including single plane influence coefficient method, dual plane influence coefficient method, and harmonic component method; At the same time, it has spectrum analysis graphs, real-time waveform graphs, and feature value extraction, which can meet the dynamic balance calculation of the vast majority of rotating machinery. At the same time, it can also provide data support for professionals to diagnose other common faults, such as preliminarily judging some other faults such as misalignment, looseness, friction, oil film movement, etc. through characteristic spectral values (1/2 octave, 1 octave, 2 octave...). Next, conduct a dynamic balance correction test on the rotor test bench.

A liquid flowmeter is a precision instrument manufactured based on the Karman vortex principle for measuring the flow rates of liquids, gases, and vapors in sealed pipelines.

Liquid flowmeter is a precision instrument manufactured based on the Karman vortex principle for measuring the flow of liquid, gas, and steam in sealed pipelines. Due to the sealed detection element inside the detection body, it does not measure the medium, and the internal movable parts do not require on-site maintenance. Therefore, it is highly praised by users and widely used in the measurement management and process control of textile printing and dyeing, petroleum, chemical, metallurgical pharmaceutical, thermoelectric, papermaking, and fire protection industries Equipped with on-site display, 3.6V battery power supply, external power supply, and 4-20mA output; remote display can be equipped with secondary instrument LCD Chinese display, and can also be equipped with temperature and pressure compensation. Instrument direct reading type, no conversion required, easy to use, reliable quality.

Water flow controller

As one of the core technologies that smart grids should possess in the new era, information and communication technology can be said to be a key factor determining the operation, construction, and development speed of the entire smart grid. In the process of building a smart grid, the vast majority of substation equipment, generators, cables, lines, etc. have online monitoring projects. Online monitoring of electricity is an important part of smart grids. However, due to the distributed and real-time characteristics of the power system, various monitoring and control devices have certain problems in information acquisition, such as time delay, path uncertainty, and loss of data packet information flow. With the development of industrial Ethernet technology, fiber optic technology, and information processing technology, and their penetration into the power field, under the current technological support background, industrial Ethernet communication has shown various application advantages in the operation process, including high reliability, high flexibility, high maintainability, and high scalability, which have made important breakthroughs in optimizing the connection and information transmission of various equipment components in the entire power grid system.

No movable parts, reliable operation, good performance, long service life

Measure the measured fluid without direct contact with the sensor, with stable performance

Due to less pressure loss, it has energy-saving characteristics compared to differential pressure flow meters

Simple and sturdy structure, easy installation, and minimal maintenance costs

The importance of cold chain monitoring in the new version of GSP has raised higher requirements for real-time monitoring of warehouse temperature and humidity, cold chain logistics, and transportation in pharmaceutical enterprises. In this changing environment, the pharmaceutical cold chain is facing a series of profound changes. However, in reality, the link in the pharmaceutical cold chain that is prone to breakage is the cold chain transportation of drugs. For cold chain transportation and links, an important part is to achieve temperature monitoring throughout the entire process to ensure the quality of drugs, reduce losses, and meet the needs of consumers as much as possible. For most medical blood, biologics, vaccines, and drugs, spoilage occurs during transportation due to the susceptibility of their protein components to environmental temperature changes. The safe circulation of temperature sensitive drugs is an important component of drug safety, and therefore requires very strict temperature monitoring.

The development of flow measurement can be traced back to ancient hydraulic engineering and urban water supply systems. During the ancient Roman era, orifice plates were already used to measure the amount of drinking water consumed by residents. Around AD * 0, ancient Egypt used the weir method to measure the flow of the Nile River. Dujiangyan Irrigation Project Water Conservancy Project in China uses the water level at Baopingkou to observe the amount of water, etc. In the 17th century, Torricelli laid the theoretical foundation for differential flow meters, which was a milestone in flow measurement. Since then, many types of instruments for flow measurement began to take shape in the 18th and 19th centuries, such as weirs, tracer methods, pitot tubes, Venturi tubes, volumetric, turbine, and target flow meters. In the 20th century, the rapid growth in demand for flow measurement in process industries, energy metering, and urban utilities led to the rapid development of instruments. The leapfrog development of microelectronics and computer technology greatly promoted the upgrading of instruments, and new types of flow meters emerged like mushrooms after rain. So far, it is reported that hundreds of flow meters have been put into the market, and many difficult problems in on-site use are expected to be solved.

China started developing modern flow measurement technology relatively late, and the flow instruments required in the early days were all imported from abroad.

Flow measurement is a science that studies the change of material mass, and the law of mutual change of mass is the basic law of the development of things. Therefore, its measurement object is no longer limited to traditional pipeline liquids. Wherever it is necessary to master the quantity change, there are problems with flow measurement. Flow rate, pressure, and temperature are listed as the three major detection parameters. For a certain fluid, as long as these three parameters are known, its energy can be calculated, and these three parameters must be detected in the measurement of energy conversion. Energy conversion is the foundation of all production processes and scientific experiments, therefore flow, pressure, and temperature instruments are widely used.

The rounding error near the scale before two points is the physical manifestation of quantization noise. All ADCs perform this operation on the voltage connected to their input terminals. They will perform signal detection and approximate the actual voltage to a finite number of step sizes. The number of step sizes used in ADC determines the size of the resolution. The noise shaping characteristics of high-precision Δ - ∑ ADCs typically limit the reduction of thermal noise and flicker noise. For devices with 16 bits or less, thermal noise is much smaller than the error caused by signal approximation. In this type of ADC, you will find that the digital code hardly changes at low data rates.

When using, the correct usage steps are not only beneficial for the operation of the machine, but also can increase the performance of the flow meter. Therefore, it is necessary to understand the usage steps of liquid flow meters. Below are the correct steps for using a liquid flowmeter:

Before using the pressure sensor, conduct a performance test on it. Connect it to a transparent water pipe, use a water column to increase the sitting pressure, and measure the voltage with a high-sensitivity digital multimeter,

The disadvantage is that a certain straight pipe section is required during installation, and the ordinary type does not have a good solution for vibration and high temperature. There are two types of vortex streets: piezoelectric and capacitive. The latter has advantages in temperature and vibration resistance, but is more expensive and is generally used for measuring superheated steam.

Any fluid that can transmit sound can use a liquid flowmeter; Ultrasonic flowmeter can measure the flow rate of high viscosity liquids, non-conductive liquids or gases. The principle of measuring flow rate is that the propagation speed of ultrasonic waves in the fluid will change with the flow rate of the measured fluid.

Positive displacement flowmeter measures the volumetric flow rate of a fluid by measuring the measuring volume formed between the housing and the rotor. According to the structural form of the rotor, volumetric flow meters include waist wheel type, scraper type, elliptical gear type, etc.

With the continuous improvement of flow measurement requirements in industrial development, the position of liquid flow meters in industrial measurement has been partially replaced by high-precision and convenient flow meters.

A liquid flowmeter is an instrument developed based on Faraday's electromagnetic induction principle for measuring the volumetric flow rate of conductive liquids.

Also known as a rotary flowmeter, it is a type of variable area flowmeter. In a vertical conical tube that expands from bottom to top, the gravity of the circular cross-section float is supported by liquid dynamics.

The float can freely rise and fall inside the cone tube. Under the action of flow velocity and buoyancy, it moves up and down and balances with the weight of the float, and is transmitted through magnetic coupling to indicate the flow rate on the dial.

The sensor has a voltage of 12V on the street. Record data. If there is a linear relationship, it indicates stable performance and can be used.

Ethernet is a series of frame based computer networking technologies used in local area networks (LANs). By analyzing Ethernet services at the physical and protocol layers, one can understand the operation of other subsystems in embedded design. A differential Ethernet signal contains address information, control information, data information, and clock information, making it difficult to isolate the events of interest. The Ethernet serial triggering and analysis options of the Tektronix MSO5 oscilloscope can be converted into powerful tools that support automatic triggering, decoding, and searching, and can debug systems based on 10base-T and 100base-TX. This guide provides in-depth reading on: 1. The physical layer and packet structure of Ethernet, aiming to provide sufficient details for debugging. 2. How to set up decoding on an oscilloscope equipped with Ethernet decoding function. 3. How to understand serial bus data on an oscilloscope equipped with Ethernet decoding function. 4. Demonstrate Ethernet serial bus decoding and trigger function settings. 10base-T Ethernet bus decoding. On a Tektronix oscilloscope, press the bus button on the front panel to define the oscilloscope input as a bus.