Side mounted magnetic level gauge

Side mounted magnetic level gaugeProduct Overview

The side mounted magnetic flip column level gauge is a product introduced, absorbed, digested, improved, and developed by our company according to the magnetic level gauge standard HG/T21584-95 issued by the former Ministry of Chemical Industry. It can be used for medium level detection of various towers, tanks, tanks, spherical containers, boilers and other equipment. This series of magnetic level gauges can achieve high sealing, leak prevention, and adapt to liquid level measurement under high pressure, high temperature, and corrosive conditions, with reliable safety. It makes up for the shortcomings of unclear indication and easy breakage of glass tube (plate) level gauges, which are not affected by high and low temperature fluctuations and do not require the combination of multiple level gauges. The entire measurement process has no blind spots, prominent display, intuitive readings, and a large measurement range. Especially in the on-site indication section, as it does not come into direct contact with the liquid level medium, it is more effective against high temperature, high pressure, high viscosity, toxic, harmful, and highly corrosive media. Therefore, it has higher reliability, safety, performance, and practicality than traditional U-glass tubes and plate level gauges.

Side mounted magnetic level gaugestructural principle

The liquid level gauge is developed based on the principle of buoyancy and magnetic coupling. When the liquid level in the tested container rises or falls, the float in the main tube of the level gauge also rises or falls accordingly. The magnetic steel inside the float is transmitted to the on-site indicator through magnetic coupling, driving the red and white flip columns to flip 180 degrees. When the liquid level rises, the flip column changes from white to red, and when the liquid level drops, it changes from red to white. The red and white boundary of the indicator is the actual height of the medium liquid level in the container, thus achieving the indication of the liquid level.

characteristic

Suitable for measuring the liquid level and boundary of the liquid medium in the container. In addition to on-site instructions, remote transmitters and control switches can also be equipped with complete detection functions.

The indication is novel, the reading is intuitive, and eye-catching. The direction of the indicator can be observed, and the angle can be changed according to the user's needs.

The measurement range is large and not limited by the height of the storage tank.

The indicator mechanism is isolated from the tested medium, resulting in good sealing, high reliability, and safe use.

Simple structure, easy installation, and low maintenance costs.

● Corrosion resistance.

Explosion proof.

-Main technical parameters of UHZ-59/C series

Measurement range: 300~15000mm

Accuracy: Soil 10mm, Soil 16mm

● Column flipping diameter: 10mm, 16mm

Working pressure: 1MPa~6MPa, anti-corrosion type ≤ 1.0MPa

● Medium density: ≥ 0.45g/cm3

● Medium density difference: ≥ 0.15g/m2 (measurement boundary)

● Medium temperature: 20C~+450C

● Medium viscosity: ≤ 0.4Pa · S. For media with high viscosity or media that are prone to crystallization at low temperatures, a heating type jacketed liquid level gauge can be selected according to user requirements.

● Factory connection flange size: DN20, PN1.0 (metric pipe)

● Connecting flange: Adopting the flange standard HG20592~20635-97 issued by the Ministry of Chemical Industry in 1998. If other flange standards (such as GB, ANSI, DIN, etc.) are used, please indicate when ordering.

For the connection flange of high-pressure magnetic level gauge, HG20595-97 neck butt welding connection flange DN25.PN4.0 is used, with a sealing surface in the form of a protruding or convex surface.

Please refer to our company's selection materials for the main technical parameters of the remote transmission supporting instruments.

If there are special requirements, they can be discussed at the time of ordering.

Steel pipe flange standard

The connecting flanges of the liquid level gauges produced by our factory are all in accordance with the Ministry of Chemical Industry (HG20592-20635-97) standard implemented on February 1, 1998. This standard is revised based on the original standards HGJ44-76-91 and HG20529-92, with reference to ISO7005-1 (1992) standard and ANSI and DIN standards. The revised new standard includes two universal systems in Europe and America, forming a complete set of content, clear system, suitable for national conditions, and in line with the standards for pipe flanges, gaskets, and fasteners. The applicable steel pipe outer diameter of this standard has been expanded from the domestic series to the universal series (A) and the domestic series (B).

※ Anti corrosion materials

Comparison Table of Commonly Used Stainless Steel Materials at Home and Abroad

Product selection mark

model

Top of the form

Bottom of the form

Example of Selection

The measuring medium is the liquid level of 31% hydrochloric acid storage tank, with a density of 1.14g/cm3. The main material of the liquid receiving body is PVC, connected by flat welding flanges, equipped with a drain valve and explosion-proof magnetic liquid level controller. The measuring range is 3000mm, and the working pressure is 0.6MPa.

Selection mark: The selection of UHZ-51 magnetic liquid level controller will be marked separately

Measure the liquid level of the acetic acid storage tank using a side mounted steam jacket type magnetic level gauge. The bottom of the level gauge is not equipped with a drain valve, and the main material is made of stainless steel (304) with a loose flange connection, without any auxiliary devices. Measurement range: 0-1800mm, working pressure: -0.1MPa, working temperature: 10C, medium density: 1.1g/cm3

Selection mark: SF-UHZ-59/J02T-00-1800-0.1-0.1

Application Notice

The supporting instruments and accessories of the auxiliary device can be found in the relevant chapters of this selection material.

The mating flange on the user device should pay attention to ensuring the form and position tolerances during manufacturing and welding, otherwise it will affect installation and use.

The "M" in the external structure diagram is called the "sinking distance" of the magnetic level gauge, which is an important parameter that users must understand - one of the basic parameters of a level gauge. According to Archimedes' theorem, the length of the magnetic float in a liquid level gauge depends on the density of the measured liquid medium. The lower the density of the liquid medium, the longer the magnetic float, and the longer the "sinking distance" from the bottom of the main conduit to the bottom of the main conduit. Conversely, the shorter the distance, the shorter the distance. For the convenience of designers and users to use and install correctly, a comparison table of typical liquid medium density and sedimentation distance is provided for reference. Comparison Table of Liquid Medium Density and Sinking Cylinder Distance (Reference Data)

Installation, use, and maintenance

To prevent the magnetic float from being impacted due to high-speed movement inside the main conduit during transportation, the level gauge is fixed to the lower drainage pipe with a card wire before leaving the factory. Users should remove the card wire before installation and use.

The installation of the liquid level gauge must be vertical to ensure that the magnetic float can move freely up and down inside the main tube.

A shut-off valve should be installed between the liquid level gauge and the container to cut off the material during cleaning and maintenance.

Magnetic conductors are not allowed to approach the cylinder of the liquid level gauge, otherwise it will directly affect the normal operation of the liquid level gauge.

After the installation of the liquid level gauge, it is necessary to calibrate it with magnetic steel and guide the magnetic flip column once to display red below zero and white above zero.

When the liquid level gauge is put into operation, the upper liquid inlet valve should be opened first, and then the lower liquid inlet valve should be slowly opened to allow the liquid medium to smoothly enter the main pipe, avoiding the rapid rise of the liquid medium with the float, which may cause the magnetic flip column to malfunction or flip randomly (if this phenomenon occurs, magnetic steel can be used to recalibrate).

When opening the bottom flange blind plate and installing the magnetic float, attention should be paid to the heavy end with the magnetic end facing upwards and not inverted!

There should be no solid impurities or magnetic impurities entering the simplified body of the liquid level gauge to avoid jamming the float and reducing buoyancy.

According to the condition of the medium, the drain valve can be opened regularly to clean the main pipe and remove the sediment inside the pipe.

Ordering Notice (Please provide the following data when placing an order)

● Model and specifications

● Name and density of the tested medium

● Measurement range

● Flange standards and connection forms

● Work pressure

● Medium temperature

● Supporting instruments and accessories

● Special requirements