Magnetic flow meter symbol
Also called Mag meter, Electromagnetic flow meter
A magnetic flow meter measures the flow of conductive liquids from the voltage induced as they pass through a magnetic field. It has no moving parts or obstruction.
What the magnetic flow meter symbol means
A magnetic flow meter measures the flow of conductive liquids from the voltage induced as they pass through a magnetic field. It has no moving parts or obstruction.
How it is drawn
A circle or box in the line, often with an M inside, tagged as a flow element or transmitter.
The magnetic flow meter symbol in each standard
Drawn as ISA 5.1 defines it, as on most US and international legends.
ISO 10628-2 does not cover instruments. On ISO-based P&IDs they are drawn as IEC 62424 PCE requests, or to ISA 5.1 on many international projects.
IEC 62424 has no separate symbol for this. Check the project legend.
German (DIN): Magnetisch-induktiver Durchflussmesser. See DIN P&ID symbols.
Where you see it on a P&ID
On water, slurries, chemicals and wastewater.
Tag codes
The magnetic flow meter is commonly tagged:
- FE
- FT
Tag formats follow the project numbering procedure. For instruments, the letters follow ISA 5.1, explained on the instrument symbols page.
Related symbols
Frequently asked questions
What does the magnetic flow meter symbol look like on a P&ID?
A circle or box in the line, often with an M inside, tagged as a flow element or transmitter.
What is a magnetic flow meter used for?
A magnetic flow meter measures the flow of conductive liquids from the voltage induced as they pass through a magnetic field. It has no moving parts or obstruction. You will find it on water, slurries, chemicals and wastewater.
What tag does a magnetic flow meter have?
It is commonly tagged FE, FT. The exact tag format comes from the project numbering procedure and the legend sheets.
Is the magnetic flow meter symbol the same in ISA and ISO?
ISO 10628-2 does not cover instruments. On ISO-based P&IDs they are drawn as IEC 62424 PCE requests, or to ISA 5.1 on many international projects. Companies vary the details, so always check the legend sheets at the front of the P&ID set.
What is the magnetic flow meter called in German?
Magnetisch-induktiver Durchflussmesser. On a German R&I-Fließschema it is drawn to DIN EN ISO 10628-2 and DIN EN 62424.
- In production since 2014
- Thousands of daily users
- On MODEC FPSO projects since 2016