Magnetic Flow Meter For Clean, Dirty Or Waste Water Application

1. Introduction

The MLF electromagnetic flowmeter works according to Faraday's law of electromagnetic induction and consists of a sensor and a converter. Used to measure the conductivity of liquids or solids. Under normal circumstances, its conductivity should be greater than 5μS/cm (the conductivity of tap water and raw water is about 100-500μS/cm), and it can also be used to measure acids, alkali, brine, pulp or pulp and other media. But these media cannot contain a lot of magnetic substances and bubbles.

MLF electromagnetic flowmeter is an instrument for measuring liquid fluidity. It is widely used in flow measurement in metallurgy, chemical industry, paper making, environmental protection, petroleum, textile, food, urban management, water plant and other industries.

2. Quick Details

MLF electromagnetic flowmeter is explosion-proof design.

Function of low conductivity measurement.

There are nine language options to meet the needs of different customers.

It has the function of self-regulation and self-examination.

Different outputs are optional: Hart,RS485 Profibus,4-20mA, frequency, pulse.

3. Specification

4. Dimensional Sketches

a. Dimension of Converter

Divided Type

Integrated Type

Battery Powered Type

b. Dimension of Sensor

5. Instrument Testing & Maintenance

Electromagnetic flow converter has self-diagnosis function. In addition to the power and hardware circuit fault, The system also give alarm to other faults in general usage. These information are given accordingly prompts in the lower right of the screen.

1 Maintenance and repair

a) The sensor installation site should meet the requirements of Section 4, please keep the housing tidy;

b) The transmitter should be placed in a clean, ventilated and dry place;

c) It needs to be inspected every two years. For high-precision users, the instrument needs to be submitted for review.

2 Transportation and storage

a) The instrument must be packaged before transportation, and be handled with care when loading and unloading.

b) The storage place must be dry and ventilated to avoid corrosive gases, and the ambient temperature should not be too low or too high;

c) The storage time should not exceed three years.

3 Unpacking inspection

a) The package cannot be opened with a heavy hammer, be careful not to damage the instrument

b) Check the contents carefully according to the packing list.

6. Advantages & Disadvantages

There are numerous benefits to using electromagnetic flowmeters to perform fluid flow measurements. They are generally non-invasive and have no moving parts, reducing the risk of breakdowns and the frequency of repairs. A decrease in flowmeter pressure is also usually no greater than that of an equivalent pipe length, reducing the piping costs. Some of the other major advantages provided by magnetic flowmeters include:

• Power usage is relatively low, with electrical power requirements as low as 15 watts for some models.
• They are mechanically obstructionless and can be equipped with abrasion-resistant liners, making them effective for measuring slurries and other erosive fluids.
• They are capable of dealing with most kinds of acids and bases, as well as water and water-based solutions, due to lining materials that are both insulators and have corrosion resistance.
• Relatively small amounts of electrode metals are needed for magnetic flowmeters.
• They can measure both very low flows and very high volume flow rates, with a minimum diameter of roughly 0.125 inches and a maximum volume of up to 10 cubic feet.
• They can usually measure multidirectional flow, either upstream or downstream.

Despite these advantages, magnetic flowmeters also present certain difficulties for flow rate measurement. These flowmeters are only effective on conductive fluids, and materials such as unmixed hydrocarbons and gases cannot be measured. However, magnetic materials themselves may also present problems, as hydrodynamic effects can alter the normal flow pattern and disturb the velocity rate enough to interfere with operations. Depending on their size and capacity, magnetic flowmeters can be relatively heavy, and those with higher corrosion and abrasion resistance can be expensive.