Frequently Asked Questions about Purchasing Magnetic Flow Meter

sales01@cxflowmeter.com

Electromagnetic flow meter is the most commonly used flowmeter for industrial water measurement. When we purchase and 

select electromagnetic flowmeters, there are always various questions. Today winny summarizes some of our common problems 

for your reference:

What is the principle of electromagnetism?

Principle of electromagnetic induction (Electromagnetic flowmeter is an inductive instrument manufactured according to Faraday's law 

of electromagnetic induction for measuring the volume flow of conductive media in pipelines.)

What is the 4-20mA output of the electromagnetic flowmeter?

Four-wire system (two-wire system can be customized, the stability is not good)

Will there be interference if the electromagnetic flowmeter is installed next to the generator?

yes there will be a lot of distractions

What is the standard connection method of electromagnetic flowmeter? What standard?

The standard is the national standard flange, which can be customized, American standard, Japanese standard, thread, etc.

Can the electromagnetic flowmeter tube be tested if it is not full? what is the reason?

Unable to measure, dissatisfied with the pipeline, need to customize electromagnetic underdrain flowmeter

What materials are electromagnetic flowmeters made of? what are these?

Shell material, instrument material, electrode material.

The structure of the electromagnetic flowmeter consists of several parts?

Pipeline components: linings, electrodes, casings. Meter or Remote Meter + Cable:

What is the turndown ratio of the electromagnetic flowmeter?

1:10

What does turndown ratio mean?

Ratio of minimum flow to maximum flow

How many materials are there for electromagnetic flowmeter electrodes?

316L, Hastelloy B, Hastelloy C, Hastelloy C, Titanium, Tantalum, Platinum, Tungsten Carbide

How many materials are there for the lining of the electromagnetic flowmeter?

    Rubber, fluoroplastics (PTFE, F46)

Can the electromagnetic flowmeter flange be made according to the American standard?

can be customized

How many types of electromagnetic flowmeter displays are there?

Three types: no display, split screen display, integrated display

Can a magnetic flow meter display gallons?

can be customized

Can magnetic flow meters be used for sanitary connections?

able

How to calibrate the empty pipe of the electromagnetic flowmeter?

If necessary, the medium must be passed first to ensure that the pipeline is full, then the valve is statically closed, the instrument is zeroed, 

and then the valve is opened for normal operation!

Does the liquid crystal display head of the electromagnetic flowmeter have an instantaneous display? Or just show the total?

Instantaneous and accumulated display

Does the electromagnetic flowmeter have an alarm output?

Both high and low voltage can be output, and there are two corresponding terminals; the flow alarm can only be realized by 

outputting 4~20MA or pulse to other receiving control instruments!

What is the minimum and maximum diameter of the electromagnetic flowmeter?

DN10~2000mm

What is the accuracy of the pipeline electromagnetic flowmeter?

DN10~300 is grade 0.5, DN300~700 is grade 1.0, DN700~2000 is grade 1.5

What is the accuracy of the insertion electromagnetic flowmeter?

Level 2.5

How many units are displayed?

The standard is L/h, m3/h

What are the media-related materials?

electrode, lining

Can the electromagnetic flowmeter be connected to a computer?

Yes, electromagnetic output 4~20MA or pulse, or RS232 or RS485 or HART protocol, as long as the PLC can receive such signals!

If you have any other questions about purchasing an electromagnetic flowmeter, 

please feel free to consult winny: sales01@cxflowmeter.com