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Magnetostrictive Liquid Level Meter

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  • No Scheduled Maintenance or Recalibration
  • Field Repairable
  • Inherent Accuracy ±0.039” (±1 mm)
  • 200 Point Strap Table
  • API Temperature Corrected Volumes
  • Integral Display
  • Password Protected Data Entry
  • Hazardous Area Certified
  • Intrinsically Safe

 

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Magnetostrictive Liquid Level Transmitters Introduction

Magnetostrictive liquid level gauge / transmitter is a new generation of high precision liquid level gauge developed by magnetostrictive principle. It has the characteristics of high precision, high reliability, long life, high stability, exquisite structure, strong environmental adaptability and convenient installation. Compared with other principle liquid level meters, it has obvious advantages. Can be widely used in petroleum, chemical, pharmaceutical, food and other tanks, pools, tanks of liquid level monitoring, measurement and control. 

Magnetostrictive Level Transmitters are used for continuous measurement of liquid level and interface. Magnetostrictive level measurement is currently the best liquid level measurement and control technology.Sino-Inst’s Magnetostrictive Level Transmitters can provide two independent outputs: interface; overall level. It can be applied when the difference in specific gravity drops to 0.02. Magnetostrictive Level Sensors Commonly used for the measurement of the oil-water interface. And others include acid tanks, propane containers, desalter and sewage tanks. Magnetostrictive Level Transmitters are composed of three parts: probe rod, circuit unit and magnetic float. The flexible cable type and the outer buoy type are derived from the basic model. And has a variety of communication modes 4~20mA, 0~5V, 0~10V, HART, RS-485 and so on.


WORKING PRINCIPLE

The structural part of the magnetostrictive liquid level sensor is composed of a stainless steel tube (a measuring rod), a magnetostrictive wire (waveguide wire), a movable float (with a permanent magnet inside), and the like. When the sensor is operating, the circuit portion will excite a pulsed current on the waveguide wire that will generate a pulsed electromagnetic field around the waveguide wire as it propagates along the waveguide wire. A float is arranged outside the sensor rod, and the float can move up and down along the rod as the liquid level changes. There is a set of permanent magnetic rings inside the float.
When the pulsed current magnetic field meets the magnetic ring magnetic field generated by the float, the magnetic field around the float changes so that the waveguide wire made of magnetostrictive material generates a torsional wave pulse at the position where the float is located. This pulse is along a fixed speed. The waveguide wire is transmitted back and 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 surface, can be accurately determined.

Magnetostrictive Liquid Level Transmitters Feature

Magnetostrictive Liquid Level Transmitters are divided into three types: flexible probe type, hard probe type, and outer float isolation detection. The watch body contains two main parts: the electronic part and the sensing part. The advantages of Magnetostrictive Level Transmitters are:

  1. Strong reliability:
    Because the magnetostrictive liquid level gauge adopts the principle of waveguide, there is no mechanical movable part. Therefore, there is no friction and no wear. The entire converter is enclosed in a stainless steel tube and is not in contact with the measurement medium. The sensor works reliably and has a long life.

  2. High precision:
    Because the magnetostrictive liquid level gauge works with waveguide pulses. In the work, the measured displacement is determined by measuring the time of the start pulse and the end pulse. Therefore, the measurement accuracy is high and the resolution is better than 0.01%FS. The accuracy achieved.

  3. Good security:
    Magnetostrictive liquid level gauge has high explosion-proof performance. Intrinsically safe explosion-proof and safe to use. Especially suitable for the measurement of chemical raw materials and flammable liquids There is no need to open the tank lid during the measurement. Avoid the unsafeness of manual measurement.

  4. Easy to install and maintain:
    The magnetostrictive liquid level gauge is generally installed through the existing pipe opening on the top of the tank. It is especially suitable for the installation of underground storage tanks and storage tanks that have been put into operation. It can not affect normal production during the installation process.

  5. Facilitate system automation:
    The secondary instrument of the magnetostrictive liquid level gauge adopts the standard output signal. It is convenient for the computer to process the signal. It is easy to realize the network work and improve the automation degree of the entire measurement system.


Magnetostrictive Liquid Level Transmitters Specification

Range
Hard rod: 150mm~7000mm, soft rod: up to 20000mm
Output
 4~20mA; 0~5V; 0~10V; ±5V; ±10V; RS485
Linearity error
better than ±0.05% FS; sensor with a range less than 300mm, error less than 150 um
 Repeatability
 better than ±0. 002%FS
 Rod material
 0Cr18Ni9, 1Cr18Ni9Ti or user-specific customization
 Electronic casing material
 1Cr18Ni9Ti
 Float material
 0Cr18Ni9, 316, rubber
 Installation form
threaded installation, connector installation, positioning ring installation, suspension installation or special customization
 Explosion protection
 ExdIIBT5, Exial IBT5, Exdl ICT5


-Manuals

Magnetostrictive Liquid Level Transmitters

-Data sheet


Magnetostrictive Liquid Level Transmitters Application

  • Transmitters for the continuous level measurement of liquids in bypass level indicators

  • Chemical and petrochemical industries, offshore

  • Shipbuilding, machine building

  • Power generating equipment, power plants

  • Pharmaceutical, food, water treatment, environmental engineering industries

Industries servedApplications
Oil and GasPosition Sensing
PetrochemicalSanitary Service
ChemicalValve Positioning
Power GenerationInventory Control
Water and wastewater treatmentCorrosive Process
Pulp and PaperUnderground Tanks
BiotechPrimary Level/Interface
Marine  Process Temperature and Level


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