Chinese manufacturer of magnetostrictive liquid level transmitter

Shandong Aipuxin Automation Instrument Co., Ltd. is one of leading manufacturers and suppliers of chinese manufacturer of magnetostrictive liquid level transmitter in China, also supports customized service with low price. Please rest assured to wholesale cheap chinese manufacturer of magnetostrictive liquid level transmitter in stock here from our factory.

Technical Parameter

Product Introduction:

Tank level sensors are composed of three parts: magnetic float, sensor and transmitter. When the magnetic float ball of the tank magnetostrictive position meter floats up and down along the conduit as the liquid level changes, the magnetic steel inside the float attracts the reed switch at the corresponding position in the sensor, causing a change in the total resistance of the sensor (or voltage). The transmitter then converts the changing resistance (or voltage) signal into a 4-20mA current signal and outputs it. And the upper and lower limit alarms can be set on the display screen to realize position control of the liquid level.

Structural principle:

It consists of two parts: a liquid level sensor and a smart HART board (current converter). The float changes synchronously with the liquid level, controlling the opening and closing of the reed switch, thereby causing a linear change in the internal resistance of the sensor. The converter then converts the change in resistance into a 4-20mA standard current signal, which is superimposed with the HART digital signal output.

Working principle

The structure of tank level sensors (magnetostrictive float oil level sensor) consists of stainless steel tubes (measuring rods), magnetostrictive wires (waveguide wires), movable floats (with permanent magnets inside) and other components, as shown in the figure above.
When tank level sensors work, the circuit part will excite a pulse current on the waveguide wire. When the current propagates along the waveguide wire, it will generate a pulse electromagnetic field around the waveguide wire. The instrument has a float installed on the outside of the measuring rod, which can move up and down along the measuring rod as the liquid level changes. There is a set of permanent magnet rings inside the float. When the pulse current magnetic field meets the magnetic ring magnetic field generated by the float, the magnetic field around the float changes, causing the waveguide wire to generate a torsional wave pulse at the position of the float. The pulse travels back along the waveguide wire at a fixed speed and is detected by the detection mechanism. By measuring the time difference between the pulse current and the torsional wave, the position of the float, that is, the position of the liquid level, can be accurately determined. The instrument can also be used to measure the boundary between two different liquids. Explosion-proof design, suitable for hazardous situations, intelligent electronic circuit design can calculate volume; the only movable part is the float, so maintenance costs are extremely low.

Product Features

Tank level sensors are used for liquid level measurement in various storage tanks. It has the characteristics of high precision, strong environmental adaptability and easy installation. Therefore, this instrument is widely used in liquid level measurement fields such as petroleum and chemical industry, and gradually replaces other traditional sensors.

1. Strong reliability: Because it uses the waveguide principle and has no mechanical movable parts, there is no friction or wear. The entire converter is enclosed in a stainless steel tube and does not come into contact with the measuring medium. The sensor works reliably and has a long service life.

2. High accuracy: Using waveguide pulse, the measured displacement is determined by measuring the start and end time of the pulse. Therefore, the measurement accuracy is high and the resolution is better than 0.01%FS, which is difficult to achieve by other sensors.

3. Good safety: high explosion-proof performance, intrinsically safe, safe to use, especially suitable for the measurement of chemical raw materials and flammable liquids. There is no need to open the can lid when measuring, avoiding the unsafety of manual measurement.

4. Easy installation and maintenance: This instrument is generally installed through the existing pipe opening on the top of the tank. It is especially suitable for installing underground storage tanks and putting storage tanks into operation, and can be installed without affecting normal production.

5. Facilitate system automation: The secondary instrument of this instrument adopts standard output signals, which facilitates the computer to process the signals and realize networking work, which improves the automation level of the entire measurement system.

Product Details

Product Application

Tank level sensors are widely used in petroleum, chemical raw material storage, industrial processes, biochemistry, medicine, food and beverages, tank area management, gas station underground inventory and other fields for industrial measurement and control of various liquid tank levels. In addition, they are used in environments such as monitoring dam levels, reservoir levels and sewage treatment.

However, because this device cannot accurately measure viscous media, the influence of the medium needs to be considered when choosing to use it.

certificate

12 month warranty period; Lifetime maintenance free

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