Magnetic Flow Meter For Sewage Water/Wastewater DN15-DN200 Application

1. Introduction

The MLF electromagnetic flowmeter works according to Faraday's law of electromagnetic induction and consists of a sensor and a transducer. Used to measure the conductivity of a liquid or solid. In general, its conductivity should be greater than 5μS/cm (tap water, raw water conductivity of about 100 ~ 500μS/cm), can also be used to measure acid, alkali, salt water, pulp or pulp and other media. However, these media should not contain large amounts of magnetic material and air bubbles.

MLF electromagnetic flowmeter is a kind of instrument to measure liquid fluidity. Widely used in metallurgy, chemical industry, paper making, environmental protection, petroleum, textile, food, urban management, water plant and other industries flow measurement.

2. Quick Details

MLF electromagnetic flowmeter is explosion-proof design.

Function of low conductivity measurement.

There are 9 language options to meet the needs of different customers.

Self-regulating function and self-checking.

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

3. Specification

4. Selection of Electrode Materials

5. Dimensional Sketches

a. Dimension of Converter

Divided Type

Integrated Type

Battery Powered Type

b. Dimension of Sensor

6. Configuration

7. Instrument Testing & Maintenance

Electromagnetic flowmeter has self-diagnosis function. In addition to power supply and hardware circuit faults, the system also alarms other faults in general use. These messages are prompted in the bottom right corner of the screen.

Maintenance and repair

A) The sensor installation site shall meet the requirements of Section 4, and please keep the shell clean;

B) The transmitter shall be placed in a clean, ventilated and dry place;

C) The instrument shall be inspected every two years. For high-precision users, the instrument shall be submitted for review.

Transportation and storage

A) The instruments must be packed well before transportation and handled with care during loading and unloading.

B) The storage site must be dry and ventilated to avoid corrosive gas, and the ambient temperature should not be too low or too high;

C) Storage time should not exceed three years.

3. Open the box for inspection

A) The package must not be opened with a heavy hammer. Care must be taken not to damage the instrument

B) Carefully check the contents according to the packing list.

8. 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.