This paper mainly studies the selection principle of E H flowmeter, the selection standard of E H flowmeter, the classification of E H flowmeter and the selection of E H flowmeter, which provides a reasonable selection scheme for the selection of E H flowmeter in flow measurement. E H flowmeter detection technology has now been involvedNational defense, scientific research, industrial and agricultural production, energy management, environmental protectionand other fields. The correct and reasonable selection of E H flowmeter directly affects the production control results of the enterprise, the quality of the products, and also affects the hidden dangers of use safety. This article will introduce those things about the selection of E H flowmeter.
flow selection principle:
E H flowmeter selection refers to the comprehensive consideration of the safety, accuracy, and economy of measuring instruments in accordance with production requirements, starting from the supply and reality of instrument products.
According to the nature and flow of the fluid to be detected, the form and specification of the E H flowmeter are determined. The selection of the E H flowmeter is first of all safe and reliable, which requires reliable measurement methods, and no accidents caused by mechanical strength or electrical circuit failures will occur during the flow measurement process. In the second aspect, the E H flowmeter will not affect the safety of the production system under normal production or failure conditions. For example, in fuel plants and flammable gas occasions, explosion-proof E H flowmeter should be selected.
E H flowmeter selection method steps
First determine the accuracy of the E H flowmeter used
This requires that the user wishes to measure the flow rate for the purpose of seeing whether he only wishes to know whether the fluid in the pipe is flowing at an approximate flow rate, or whether he wishes to obtain some very useful dosage situations. This is the primary basis for the selection of E H flowmeter.
Selection of E H Flowmeter-Primary Selection and Exclusion Method
After determining that E H flowmeter must be installed, it is necessary to further understand the use requirements and various conditions in detail.
First of all, according to the type and characteristics of the fluid, take the exclusion method, choose to adapt to a variety of different media E H flowmeter.
E H flowmeter type selection and their respective scope of application
Electromagnetic E H flowmeter selection-mainly suitable for conductive liquid flow measurement, the temperature does not exceed 180 ℃. The product has the advantages of high precision, no pressure loss, good stability, can measure various corrosive solutions, reasonable selection of lining materials and electrode materials, and chemical resistance.
Electromagnetic E H flowmeter is conductive liquid (with corrosion)
E H Vortex Flowmeter-mainly suitable for all kinds of clean liquid and gas measurement
Product advantages: measuring tube wall all stainless steel structure, corrosion resistance, high pressure resistance are very good
The accuracy level is very high, especially suitable for the measurement of clean fluids.
Measurement of trade-natural gas transmission and distribution pipelines, natural gas metering
Process control-an important instrument for petrochemical, electric power and industrial boilers
Standard device is used as a standard meter-clean, high accuracy level
A variety of explosion-proof grade optional, can be applied to explosive occasions
E Hintelligent turbine flowmeter also comes with temperature and pressure compensation system
E H vortex flowmeter selection-gas, liquid, steam flow measurement
E Hvortex flowmeter is that there are many types of measuring media and it is not sensitive to changes in the physical properties of the fluid.
Measure both liquids and gases and vapors
E H vortex flowmeter selection suitable medium-non-conductive liquid (excluding electromagnetic E H flowmeter), steam measurement and superheated steam
Characteristics of E H vortex flowmeter
The output is proportional to the flow rate of the pulse signal, there is no zero drift problem
Measure the volume flow of the working state, insensitive to changes in the physical properties of the fluid
Wide range of measuring range, can measure the flow of a large range of fluid
The pressure loss is small, the installation mode is more flexible, and it can be divided into pipeline type and plug-in type.
The installation method is flexible, according to the different pipes, horizontal, vertical, inclined different angles can be installed
E H Ultrasonic Flowmeter-Liquid E H Flowmeter
E H ultrasonic flowmeter mainly uses the principle of ultrasonic design and manufacture of E H flowmeter
This type of E H flowmeter adopts a non-contact method, and is almost not affected by the measurement environment of fluid in terms of anti-corrosion, pressure and temperature.
Can be applied to a variety of liquid flow measurement.
E H ultrasonic flowmeter also has a great feature is:
It can be disassembled continuously, which provides a good solution for many flow measurement openings.
It is only necessary to clamp the probe of the E H ultrasonic flowmeter on the pipeline, which greatly facilitates the installation and use of the E H flowmeter.
It is especially suitable for the selection of E H flowmeter for large pipelines and large pipelines.
E H Micro Flowmeter-Measurement of very small flows
E H micro flowmeter is a kind of E H turbine flowmeter. The reason why E H micro flowmeter is separated from E H turbine flowmeter is mainly because its particularity cannot be replaced by other E H flowmeters.
E H micro flow meter is especially suitable for the measurement of micro flow. Many users will have a headache for the measurement of micro flow, because few E H flow meters can reach the offline of micro flow, which is very impractical in terms of accuracy and stability of measurement results.
At this time, the characteristics of E H micro flowmeter are particularly prominent:
Very low lower limit, can be applied to a variety of small flow measurement, low limit up to 2.1 m3/h
High measurement accuracy and good stability
The overall design to meet the high temperature resistance, high pressure resistance, corrosion resistance and other characteristics
Therefore, the measurement of small flow-E H small flow meter is a good choice.
Here, our company provides one-year warranty service for all sold E H flowmeters, and provides technical support and installation guidance for various E H flowmeters. Therefore, the selection of E H flowmeter and the after-sales service of E H flowmeter manufacturers are also indispensable considerations.