20mA IP65 40mm Electromagnetic Flow Meter 60 Degree

40mm Electromagnetic Flow Meter with Water, 60 Degree

1.Working Principle

The principle of the sensor is based on Faraday’s law of electromagnetic induction.

It is installed a pair of detection electrodes on the pipe wall,where the measurement pipe axis and magnetic field lines are vertical. When the conductive liquid cuts magnetic field lines and produces induced electromagnetic force.Which can be measured by the two electrodes on the meter pipe.The result can be calculated by formula: Induced electromotive force,(flow signal) E=KBDV

E——Induced electromotive force,V；

K——meter constant；

B——Magnetic flux density,T；

D——Internal diameter of measuring pipe,m；

V——Average velocity of pipe section,m/s.

MLF Series Electromagnetic Flow Meter

Assume the volume of liquid as qv(m3/s),qv=πD2V/4),so in the formula E=(4kB/πD)qv=kqv,

K is meter constant,K=4kB/πD.

Actually, the electromagnetic flow meter consists of two parts, transmitter and sensor, the measuring electrodes inspect the electromotive force, and transmit to the converter, the converter provides excitation current.

E is usually called a flow signal, after processing the flow signal by converter, output 4~20 mA/pulse(or frequency) signal which is proportional to the flow rate, then the flow rate recording,adjusting can be achieved.

2. Selection of Liner Material

3. Dimensional Sketches

a. Dimension of Converter

Divided Type

Integrated Type

Battery Powered Type

b. Dimension of Sensor

4. Configuration

5.Instrument Inspection and 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) Sensor installation site should be consistent with the section four requirements, Please keep the housing clean and tidy;
b)Transmitter should be placed in a clean, ventilated, dry place;
c)Need to inspect every two years, for high precision users, instrument need to be submitted to censorship.

2. Transportation and storage
a)The instrument must be packed before transportation, be carefully handled when loading and unloading.
b)Storage site must be dry, ventilated, avoid corrosive gas erosion, the ambient temperature is not too low or too high;
c)Storage time better not exceed three years.

3,Unpacking and checking
a) The packing can’t be opened with heavy hammer, and should be careful not to damage the instrument
b) Check the content carefully according to the packing list.

Melan Measurement & Control Instruments is located in Shanghai City. It is a high-tech manufacturer specialized in the design, development, manufacturing and sale of measurement and control instruments.

Our products are widely used in various fields, including electricity, chemical industry, metallurgy, brewing, oil and gas, textile, water conservancy, environmential protection, etc.

We own independent-courtyard modemized manufacturing workshops and an open office building. Melan has accumlated production and management experience in instruments from European and American and domestic famous companies.

We own first-class talent team, and all the products have reached advanced level at home and abroad. We provide our customers with complete and professional test control solutions and high-tech and high-quality products.

Melan is your reliable friend and partner. We are willing to try our best as dedication and perfection as motivation.

Our Company

Meeting Room

Showroom

Warehouse

Calibration System

Workshop