Guangdong Guangzhou intelligent vortex flow meter, steam flow meter, compressed air flow meter

Guangdong Guangzhou intelligent vortex flowmeter, steam flowmeter, compressed air flowmeter
Model brand Dichuan instrument
Instrument material stainless steel precision, repeatability
Explosion-proof grade non-explosion-proof product , signal output pulse signal,
Guangzhou Dichuan Instrument Co., Ltd.
Product Introduction
One-piece temperature and pressure compensated steam flow meter
It is a programmable intelligent vortex flow sensor It consists of flow totalizer, temperature sensor, pressure transmitter, and supporting connecting cables, flanges, bolts, and screws.
Install in locations that are not suitable for daily viewing and meter reading, such as overhead pipes, elevated pipes, and remote pipes
Among them, the vortex flow sensor (gas measurement) detects the medium condition, and outputs the frequency signal through the conversion circuit to a level that can Program the intelligent flow totalizer. At the same time, the temperature sensor and pressure transmitter provide signals of medium temperature and medium pressure to the flow totalizer according to changes in the medium. After calculation and processing, data such as temperature, pressure, medium density, instantaneous flow (instantaneous flow), accumulated flow (accumulated flow), frequency and other data can be directly displayed in Chinese.
In addition, the totalizer can also provide power outage reports, daily cumulative reports, and monthly cumulative reports, which brings great convenience to users in meter reading. In addition, it is equipped with ~, communication interfaces can be added
Two basic configurations of the product
Dual-row LCD display
Total display
Instantaneous display
Powered by high-efficiency lithium battery (the battery uses one More than half a year old, easy to replace and cheap.)
~Output (price is cheaper than lithium battery power supply)
Three product overview
The steam flow meter of the intelligent vortex flowmeter series adopts Karman vortex It is manufactured based on the principle and has the advantages of high measurement accuracy, wide range, low power consumption, convenient installation, simple operation, small pressure loss, and no need for on-site debugging. It is currently an ideal steam measuring instrument.
Four product applications
All sites that produce and use steam, including power generation and cogeneration, heating industry aviation, aerospace, shipbuilding, nuclear energy industry machinery, metallurgy, coal mining and automobile manufacturing industry petroleum, chemical industry Industry, food and tobacco manufacturing industry, light industry, etc.
Five main product configurations
Flange standard/and/Flange standard and material can also be determined according to the specific requirements of customers.
The body material is stainless steel.
Detecting sensor materials
The LCD flow meter is equipped with a high-precision LCD display, double-row LCD, digit display, which can display cumulative flow, instantaneous flow, flow rate, communication address and the maximum flow corresponding to the output (can arbitrary settings) and flow direction indication.
Range ratio
Six main product features and main technical parameters
The overall structure of the instrument is reasonably designed, with wide dynamic measurement range and small pressure loss
The main body of the instrument can be made of stainless steel and is suitable for Measurement of corrosive media
The instrument has no moving parts and is easy to install and maintain
On-site LCD display, pulse, ~ output or serial communication interface, which can be connected to industrial automation systems
Internal thread for electrical interface
Explosion-proof level mark~
Protection level
Built-in power supply (battery external power supply,
Maximum temperature of measuring medium ℃
Working environment temperature ℃～+℃ (pressure ℃～+℃ when compensated)
Working pressure, ,,,,,,
Accuracy level, level, level.
Nominal diameter
Card-mounted type,,, ,,,,,,,,,,,
Plug-in type,,,,,,,,,,, etc
Flange type,,,,,,,,,,,,,.
/> Specifications
, threaded type, card-mounted type, flange type~.
, card-mounted type, flange type~.
, plug-in type~.
Seven-part body Steam flow meter product selection guide
According to the structural characteristics of the steam flow meter in the intelligent vortex flow meter series, it is classified into two types: integrated and split.
When the integrated type measures saturated steam, it integrates vortex flow meters The flow sensor, temperature sensor (or pressure sensor) and display are integrated into one, with intelligent temperature (or pressure) compensation function. It is powered by a built-in battery or (usually used when pulse signal output, two-wire output or communication is required). Local LCD displays medium temperature (°C) [or working pressure], instantaneous mass flow and cumulative mass flow.
When measuring superheated steam in an integrated manner, it integrates a vortex flow sensor, temperature sensor, pressure sensor and display. , with intelligent temperature and pressure compensation functions, built-in battery or (usually used when pulse signal output, two-wire output or communication is required) power supply, local LCD display medium temperature (℃), working pressure, instantaneous mass flow and Cumulative mass flow.
When measuring saturated steam in a split type, it consists of three parts: a vortex flow sensor, a temperature sensor (or pressure sensor) and an intelligent flow display calculator. It has an intelligent temperature (or pressure) compensation function and is composed of The intelligent flow display calculator remotely displays the medium temperature (°C) [or working pressure], instantaneous mass flow and cumulative mass flow.
When measuring superheated steam in a split type, it consists of a vortex flow sensor, a temperature sensor, a pressure sensor and The intelligent flow display calculator consists of four parts. It has intelligent temperature and pressure compensation functions. The intelligent flow display calculator remotely displays the medium temperature (°C), working pressure, instantaneous mass flow and cumulative mass flow.
Special requirements are required. It is pointed out that when only the volume flow under working conditions is required to be measured (we define it as a simple type, it is usually suitable for occasions where the medium temperature and working pressure are basically constant. Whether it is an integrated type or a split type, it does not have intelligent temperature and pressure. There is no compensation function and there is no configuration of temperature sensor and pressure sensor. At this time, only the instantaneous working condition volume flow and the accumulated working condition volume flow are displayed.
The integrated intelligent vortex flow sensor with temperature and pressure compensation uses a new design concept to integrate temperature, pressure and flow signals into one, and uses an intelligent digital processor to mix and process the three signals and output a compensated Standard flow rate, thus realizing the temperature and pressure compensation function of gas and steam. Due to the intelligent integrated design concept, the temperature and pressure compensation intelligent vortex street has the characteristics of compact structure, easy installation, use and maintenance. Functional features of temperature and pressure compensation integrated flow meter
●The temperature and pressure compensation function is also integrated into the meter body, which can measure the standard volume flow rate or standard mass flow rate of the fluid.
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Fully intelligent and digital circuit design, which can automatically compensate for the density of the measured fluid or the calculation of the standard volume.
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New digital filtering and correction functions make flow measurement more accurate and reliable.
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The battery-powered model can work continuously for more than two years without external power supply.
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New dot matrix Chinese character LCD display, more convenient to use and operate.
Measurement range
In order to facilitate selection, we simply define the working condition volume flow rate of steam as the volume flow rate under working conditions (actual medium temperature and working pressure), and the standard condition volume flow rate is simply defined as It is defined as the volume flow rate under standard conditions (medium temperature is ℃ and working pressure is 1 atmosphere).
Working condition volume flow measurement range
Specification working principle and structure
In the fluid pipeline, insert a cylindrical barrier vertically, and there will be two sides at the rear (relative to the fluid flow direction) Alternately generate vortices. As the fluid flows downstream, a vortex array is formed, which we call a Karman vortex street. We define the cylindrical obstruction that generates vortices as a vortex generator. Experiments have shown that under certain conditions, the separation frequency of vortices has a linear relationship with the flow rate of the fluid. Therefore, as long as the frequency of vortex separation is detected, the flow rate or flow rate of the fluid in the pipe can be calculated. Vortex flow meters are manufactured based on this principle.
Installation requirements for eight-part steam flowmeter
① The direction of the flow arrow on the vortex flowmeter is consistent with the flow direction of the fluid, and its installation angle is not restricted.
②The length of the upstream straight pipe section, the length of the downstream straight pipe section
③When pressure and temperature compensation are required, a pressure transmitter and a temperature transmitter should be equipped, and the position of the pressure relief hole is downstream of the sensor. The diameter of the pressure hole is , and the temperature measurement point is set downstream.
④ During on-site installation, if the above installation requirements are met, be sure to stay away from the source of vibration.
Advantages of Vortex Flowmeter
Advantages of Vortex Flowmeter The Vortex Flowmeter has a simple and solid structure and is easy to install and maintain. Compared with the throttling differential pressure flowmeter, it does not require a pressure guiding pipe and a three-valve group. , Reduce leaks, clogging, freezing, etc. Applicable to many types of fluids, such as liquids, gases, vapors and partially miscible fluids. The accuracy is high, the measured value is generally measured, the range width can reach or, and the pressure loss is small. It outputs a pulse signal proportional to the flow rate and is suitable for total quantity measurement. There is no zero point drift within a certain Reynolds number range. The output frequency signal is not affected by the physical properties and components of the fluid. That is, the instrument coefficient is only related to the shape of the vortex generator and the pipe. Size-related, it only needs to be calibrated in a typical medium and is applicable to various media. The corresponding detection method can be selected according to the measurement object, and the instrument has strong adaptability.
9. Precautions when purchasing and selecting split steam flow meters
The selection of flow meters often plays a very important role in the successful use of the meter. Due to the complex conditions of the measured objects and the wide variety of meters , performance indicators each make the selection of instruments difficult. There is no perfect flow meter. All types of instruments have their own characteristics. The purpose of selection is to choose the most suitable instrument among the many varieties by leveraging their strengths and avoiding weaknesses.
General selection can be considered from five aspects, which are instrument performance, fluid characteristics, installation conditions, environmental conditions and economic factors. The detailed factors in the five aspects are as follows
Instrument performance
Accuracy, repeatability, linearity, range, flow range, signal output characteristics, response time, pressure loss, etc.
Fluid characteristics
Temperature, pressure, density, viscosity, chemical corrosion, abrasiveness, scaling, miscibility, phase change, electrical conductivity, sound speed, thermal conductivity, specific heat capacity, isentropic index
Installation conditions
Pipe layout direction, flow direction, length of straight pipe section upstream and downstream of the test piece, pipe diameter, maintenance space, power supply, grounding, auxiliary equipment (filter, air eliminator), installation, and other environmental conditions
Ambient temperature, humidity, electromagnetic interference, safety, explosion-proof, pipeline vibration, etc.
Economic factors
Instrument purchase fee, installation fee, operation fee, calibration fee, maintenance fee, instrument service life, spare parts wait.
The steps for selection are as follows
Preliminary available instrument types based on the type of fluid and five considerations (there must be several types for selection)
Provide data and price information for the preliminary types Collection to prepare conditions for in-depth analysis and comparison
Use the elimination method to gradually focus on ~ types, and repeatedly compare and analyze the five factors to finally determine the ten pre-selection goals
Service Commitment We are committed to pursuing high standards in everything. Quality, with the spirit of customer satisfaction as the purpose, we provide relevant services to users in strict accordance with contract requirements and product technical specifications, and meet user needs to the greatest extent. We solemnly promise you the principle of providing pre-sales, sales and after-sales services with enthusiasm.
1. Product quality commitment, product manufacturing and testing all have quality records and testing data. , For product performance testing, we conduct full process and full performance inspections on the products, and then box or package the products after they are confirmed to be qualified. 2. Product price commitment. In order to ensure the high reliability and advanced nature of the product, the transmission system materials are all selected from international high-quality famous brand products. , under the same competitive conditions, our company sincerely provides customers with the best and lowest price without sacrificing product technical performance or changing product components. 3. Delivery time commitment and product delivery time are implemented according to customer requirements. If there are special requirements that need to be completed in advance, our company can specially organize production and installation according to the production situation, and strive to meet customer needs. . When the product is delivered, our company provides the following documents to the user ① Product instruction manual ② Material instructions for purchased parts ③ Product certificate
Quality assurance
Our factory implements warranty for the instruments and meters sold, and the warranty period is individual. Month to month varies depending on the instrument.
Technical Services
The product quality guarantee period is calculated from the date of acceptance of the goods, and the warranty period is one year. Within one year after the buyer's acceptance, except for human damage and force majeure factors, if the instrument itself has quality problems, our company promises to provide free maintenance services and material costs in China.
Our company provides long-term technical support. If the seller needs on-site service outside the warranty period, only the cost will be charged (within China).
During the life of the goods, our company has sufficient supply of wearing parts. If the buyer requires ordering spare parts, our company can guarantee to provide them in time.
Three aspects of high-quality service
The user purchase plan provides technical performance data reference for relevant instruments, selection and technical consultation and other services
The company's inventory is often equipped with spare parts for the instruments sold. And consumables, vulnerable parts, so as to provide timely replacement to users
The products sold by our company provide free maintenance and technical support services within one year and lifelong after-sales maintenance services.
Contact information
Guangzhou Dichuan Instrument Co., Ltd.
Address Industrial Park, Qianfeng South Road, Shiji Town, Panyu District, Guangzhou