Xi'an Dehou Electronic Technology Co., Ltd.
Xi'an Dehou Electronic Technology Co., Ltd.
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NYLD Tubular Eletromagnetic Flowmeter
The NYLD tubular electromagnetic flowmeter is a flowmeter with high accuracy and high reliability.It is used to measure the volumetric flow of conductive liquid and slurry in closed pipelines, and it is widely used in steel, electricity, petroleum, chemical industry, coal, metallurgy, mineral resources, paper making, water supply and drainage, food, medicine and other industries.
NYLD Tubular Eletromagnetic Flowmeter Technical Parameters
| Power Supply | AC220V 50Hz /DC24V/3.6V |
| Power dissipation | <15W (Supporting the power consumption with the sensor) |
| Show the button | In the Chinese and English display, the instantaneous flow rate, the cumulative flow rate and the alarm display (the excitation open-circuit alarm, the air traffic control alarm, and the flow over-limit alarm) can be displayed.Four film light touch switches for data setting |
| Register | Forward total amount, reverse total amount |
| Output signal | Two-way two road,full isolation 0〜10mA/4〜20mA |
| load resistance:0~10mA时,0~l. 5KQ ;4~20mA时,0~750. | |
| Forward and reverse flow outputs, the output frequency ceiling can be set within 15,000 H z.The transistor collector with photoelectric separation frequency output has an open-circuit bidirectional output.External power supply shall not be greater than 35V, and be collected when conducting The maximum maximum current is 50mA. | |
| Two open-circuit alarm output of the transistor collector with photoelectric isolation.The external power supply is not greater than 35V, and the maximum current of the collector is 250mA when the alarm output goes on.Alarm status: fluid air traffic control, excitation disconnection line,Flow over limit. | |
| Supporting precision | ± 0. 5% of the indicated value, ± 0. 3% or ± 0. 2% of the optional indicated value |
| The damping time constant | Continuous variables range from 0 to 100s |
| Communication mode | Optional RS232C or RS485 serial communication interface, HART communication protocol, with lightning protection record (10 years) |
| Loss of power protection | The instrument internal design has no power drop clock, and can store 16 power drops |
| Protection grade | IP 65, it can be customized up to IP67 |
| Explosion-proof grade | Exia II CT5/Exd II CT5 (selectable) |
NYLD Tubular Eletromagnetic Flowmeter Operating Principle
The measurement principle is based on Faraday's law of electromagnetic induction.That is, when the conductive liquid moves in the magnetic field, the induced electric dynamic potential occurs in the conductor. E is: E=KBVD
K: Instrument constant
B: Magnetic induction strength
V: Meverage flow rate in the pipe section
D: inner diameter of the pipe
For flow measurements, the fluid flows through a magnetic field perpendicular to the flow direction.The flow of a conductive liquid induces a voltage signal proportional to the average flow rate (i. e., the volume flow rate).The induction voltage signal is detected by two electrodes in direct contact with the liquid, and transmitted to the amplifier by cable, and then converted into a uniform current output signal.
NYLD Tubular Eletromagnetic Flowmeter Design Features
◎The measurement accuracy is not affected by changes in the fluid density, viscosity, temperature, pressure, and electrical conductivity.
◎Measurement pipe no obstruction flow parts, no pressure loss, straight section requirements.
◎The converter uses an LCD backlight display that makes readings in direct sunlight or in dark rooms easy.
◎With the parameters set by the infrared touch button, the cover plate of the converter can also be set safely without opening in a harsh environment.
◎The flow meter is a two-way measurement system with three integrators: forward, reverse and total difference; positive and reverse flow.
◎And has a variety of output: current, pulse, digital communication, HART.
◎The converter has the functions of self-diagnosis alarm output, no-load detection alarm output, upper and lower flow alarm output, batch control and so on.
◎It can not only be used for general process detection, but also for the measurement of mineral pulp, pulp and paste liquid.
◎High-voltage electromagnetic flowmeter adopts PFA mesh lining technology, high-pressure resistance, negative pressure resistance, specially applied in petrochemical, mineral and other industries.
◎Explosion-proof instruments can be used in the corresponding explosion-proof places.
NYLD Tubular Eletromagnetic Flowmeter Features and Scope Of Application
NYLD type Chinese and English display intelligent converter uses a 16-bit embedded microprocessor.Full digital treatment, with two-way flow measurement function, instantaneous flow and positive and reverse cumulant and difference product calculation, used to measure the volume flow of conductive media like clean water, sewage, acid, alkali, salt solution or liquid-solid two-phase fluid.
NYLD Tubular Eletromagnetic Flowmeter Selection