博文

目前显示的是 八月, 2018的博文

Best and Affordable Magnetic Flow Meter You Can Gets

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Magnetic flow meter China is taking the lead as a hot-favorite among an increasing number of industrial consumers of these products today. Granted, the world today is full of many brands and models of Magnetic flow meters. These instrumentation products, also technically known as electromagnetic flow meters, are vital tools for accurately measuring liquid flow rates. The many brands of these devices often pose a challenge to consumers. Remember, not all electromagnetic flow meters are equally good. Some are excellent while others are out rightly bad and some are somewhere in between. Even more important is that these meters vary in prices depending on quality and who the manufacturer is. To help you this maze let’s focus briefly on some tips we have used to make some of the best magnetic flow meters in the market today. Things to consider about magnetic flow meters •Fit for purpose As a leading manufacturer of magnetic flow meter China, we put to mind that there are different range

What is Standard Flow, Actual Flow Normal Flow in Gas Measurement?

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We have a lot of gas flow measurement applications and inquiries, choose a suitable gas flow meters are tough jobs than liquid flow meter because gas flow measurement is relatively complex due to involving temperature, pressure, and water content in the gas measurement. Silver Automation instruments need to obtain operation temperature, operation pressure, and what kind of gas you will measure before choose correct gas meter size and flow meter type. However, in actual applications, a lot of customers are confused about gas flow rate units, such as Nm3/h, Am3/h, SCFM, SCCM, N means Normal flow, S means standard flow, A means Actual Flow, what are these difference? The standard flow rate is a correction which is applied to an actual flow measurement based on a given temperature and pressure. This correction is applied using the ideal gas law. The most widely used value is 1 atmosphere (101.3 kPa) at sea level and 15℃ The normal flow rate is 1 atmosphere (101.3 kPa) or 14.696 psia at (

Process Instruments used in Poultry Industry

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Below is a reference application which process instruments used in Poultry Industry. Let’s see the case how we choose instruments to measure liquid flow, gas flow, also temperature and pressure information. Case:  We are interested to know more about the instruments that your company offers. Specifically, we need  magnetic flow meter  to measure substrate from biogas plants, Thermal mass flow meter to measure biogas flow rate, and temperature and pressure transmitter to measure from the internal part of the digester. The medium is substrate from laying hens guano at 10% of dry matter. The operational temperature is 38-40°C. Also, we need more of this temperature transmitter but to measure inside a 75 mm PPR pipe. In this case, the medium is water and the temperature range is for 30-90°C. Here is the information that you need: 1.       Magnetic flow meter: (with display) a.       Substrate: laying hen guano liquated at 10% of dry matter. This should be corrosive. b.       Electrode

Installation Requirements of Electromagnetic Flow Meter

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Selection of Mag meter installation sites In order to make the electromagnetic flow meter operate stable and reliable, the following requirements should be paid attention to when selecting the installation site: Avoid ferromagnetic objects and devices with strong electromagnetic fields (large motors, large transformers, etc.) to avoid the influence of magnetic field on the working magnetic field and flow signal of the sensor. Should be installed in a dry and ventilated place, avoid sharp, environmental temperature should be in 20 ~ + 60 ℃, relative humidity is less than 85%. 3. There should be sufficient space around the flow meter for installation and maintenance. Installation recommendations for Mag meter If there is a certain amount of turbulence in the pipeline and the vortex is generated in the non-measuring area (such as elbow, tangential limiting flow or half-open upstream cut-off valve), it is irrelevant to the measurement. If there is a steady eddy current in the measurement

Factors Impacting the Developing of Intelligent Water Meter in China

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Most intelligent water meter manufacturers in China are in the southern parts of China, such as Guangdong, Fujian, Henan and other provinces, while in north regions of China, still exists some instruments manufactures, such as in Beijing, Hebei, Shandong and other regions. As the time goes on, these water flow meter manufacturers draw on a large number of practical instruments application experience ,continuously improve the instrumentation production process, and introduce advanced and stable sensor technology from abroad. Instrument production has leapfrog development In 2017, China's intelligent water flow meter industry produced about 22.55 million units, imported about 25,000 units, exported about 248,000 units, and the consumption of the industry was about 223.27 million units. The balance of supply and demand of China's intelligent water meter industry in recent years is shown in the following figure: Factors influencing the development of water meter market 1.The mark

Why Water Contained Gas is Hard to Measure?

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Gas flow measurement is often being asked by our customers, and we always provide perfect gas flow meter solution to different kinds of gas measurement. We choose vortex flow meter, gas turbine flow meter, thermal mass flow meter, variable area flow meter, or coriolis mass flow meters for different gas measuring with different technical specifications. No mater clean gas, dirty gas, or mix gas, we all have solutions, but wet gas is a tough job for us, let’s see a case to analysis why moist gas flow measurement is a problem. Case: One of the customers provide below applications and questions: 1) Gas flow meter for exhaust gas from diesel engine: 0- 1500m3/h, pipe size DN150. ; Medium temperature: 70- 80oC 2) Gas flow meter for exhaust gas from diesel engine: 0- 4000m3/h, pipe size DN250. ; Medium temperature: 70- 80oC One important point, the gas is wet, contained a lot water, and we want to use gas turbine flow meter, vortex flow meter or thermal mass flow meter for the exhaust gas, c

Successfully Developed of Two-phase Wet Gas Flowmeter

Wet gas flow measurement has always been a technical problem in flow measurement. Our commonly used flow instruments, such as gas turbines meters, thermal gas flow meters , vortex flowmeters, orifice flowmeters, etc., require dehumidification of the medium and then measurement the gas flow. Recently, Professor Xu Ying of Tianjin University developed a measuring device. The flow measuring device is based on ultrasonic technology, which can be used to measure the underwater two-phase wet natural gas flow range. Recently, this flow meter has been approved by CCS of China Classification Society and officially released to the market. The design pressure, design temperature, water depth, gas content, and measurement accuracy of this flow measurement device have reached the international level. At present, this underwater two-phase wet gas flow measuring flow meter is very much needed in the development of deep-sea oil and gas fields, which can greatly improve oil and gas production efficien

Development of China Paper Recorders and Paperless Recorders

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The paper recorder and paperless recorder are important tools for recording data and are widely used in a variety of industrial process control. The recorder can store temperature, pressure, flow, voltage and other data in industrial control. The recorder has developed for decades and has gone through two stages: paper recorder and paperless recorder. The formation of paperless recorders began in the petrochemical industry. Before the 1990s, the petrochemical industry used paper recorders when recording parameters such as flow, temperature, and pressure at the site. A paper recorder uses a pen to draw curves on the recording paper to preserve various instrumentation measurement data during industrial control. This mechanical paper recorder has many moving parts and is easily damaged. It requires regular replacement of paper and ink, so the running cost is relatively high, and the later data processing is troublesome, and the data is not easy to save. In 1992, the Multinational Instrum

Sample of Calculation Sheet for the Balance Flow Meter

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Questions: We would like to retrofit existing vortex meter to balance flow meter, Detail setup as below: Pipe Size / SCH: 2 In /40 Pipe ID: 52.502mm Flowing Pressure: 16 Barg Flowing Temperature: 35-45 DegC Medium:100% Nitrogen gas Temperarure : 30-45Degc, Purpose: Nitrogen gas flow measurement Min Normal Max Flow range 200 Nm3/h 2500  Nm3/h 3600  Nm3/h Can you please issue a calculation sheet for the balance flow meter? Answer: We are a balance flow meter supplier from China with good price. Balance Flow meter is a kind of throttling device similar like orifice plate; it needs DP, pressure transmitter, RTD and flow computer to realize the flow measurement. Comparing to traditional orifice plate, balance flow meter can bear higher temperature and pressure applications, also with better accuracy and lower pressure loss. Thanks for your detailed information, and please see below calculation sheet according to your provided technical specifica

Gas Turbine Flow Meter and Thermal Mass Flow Meter Pressure Loss

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Question: Below is one of our customers who have below applications and also below demands: We are building a combustion test facility at one University of Technology and Economics and we are currently searching for a gas flow meter for combustion air flow measurement, the combustion air is clean air, The gas arrives at the flow meter at ambient conditions (~20 °C and ~1 bar). DN50 size with around 6-65 m3/h range, the housing can be either aluminum or stainless steel, corrosion resistant rotor, standard structure, +-1% accuracy, no explosion proof, and either flange or thread connection is fine. We want to find a cheap price flow meter with good quality. We prefer gas turbine flow meter, also we are not against the thermal mass flow meter, and however, we expect higher pressure drops. If you can send us a pressure drop chart or a list of available sizes (length and internal diameter along with necessary upstream and downstream distances are fine, we can estimate the pressure drop fr

SHD Series Battery Powered Electromagnetic Flow Meter FAQ

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Question 1 The battery-powered SHD Series Magnetic flow meter can also have external 12V or 24V DC power supply? Answer: Yes, we can this kind of mag meter with both battery powered and 12V power supply. Question 2 We want to know how you can download this information into a laptop PC? We know that SHD Series battery powered mag meter has RS485 but common laptops don't have RS485. Is there another way to connect to a laptop PC? (besides GSM/GPRS and RS485). Answer: You cannot download the information to PC. We normally have 3 ways to record the flow from the battery powered water meter : 1) GPRS 2) RS485 to upper system 3) Manual check the flow on the flow meter digital display. Question 3 What kind of information can be viewed from the mag water meter? Can I choose the periods of data saving? Answer: Only month total flow can be viewed, and the period of data is 1-month total flow, it can max record 32 months total water flow on the battery water meter. Question 4 The purpose o

Electromagnetic Flow Meter Application Reference (1)

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Question 1: My client wants magnetic flow meter for HCL at 33%, also we need an HNO3 acid flow meter, HNO3, ph=0, we require output signal 4 to 20mA and digital display, can you help us with this corrosive medium flow measurement. Answer: Hi, Magnetic flow meter with tantalum electrodes and PTFE liner are suitable for HCL and HNO3 acid flow measurement, see below Silver Instruments proper flow meter selection Electromagnetic flow meter for HCL at 33%, Model:SHD-SE11-25/E4/L1/1D/E/P0/0/S0S4/H0/F0/G0/0 Electromagnetic flow meter for HNO3 acid Model:SHD-SE11-15/E4/L1/1D/E/P0/0/S0S4/H0/F0/G0/0 If you want to know the magnetic flowmeter price , welcome to send email to us: sales@silverinstruments.com Questions 2: Hi, We need Magnetic flow meter for effluent water measurement, can you help us to choose a mag meter which meets below specifications: Line size : 15 NB (1/2") / DN15 Accuracy: ±0.5% Media: Effluent water Pressure : 3-4 Kg/cm2 / ≤ 1.6 Mpa Media Temperature: -20℃~120 ℃ Flo