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Flow Primary head of Electromagnetic flowmeterMAGMAX® EGS4000

Primary head of Electromagnetic flowmeter MAGMAX<sup>®</sup> EGS4000


*Specifications are subject to change without prior notice.

MAGMAX® EGS4000 is a flange type primary head of electromagnetic flowmeter with PFA / PTFE liner. This flowmeter is used in combination with MAGMAX® series converter of electromagnetic flowmeter. Nominal sizes from 10 to 1000 mm are lined up. It can be used not only for various chemical liquids but also for wide applications for flow rate measurement.
* MAGMAX® is registered trademark of the TOKYO KEISO CO.,LTD.


  • · For 25 mm through 150 mm in nominal size, punched plate reinforced, high quality clear PFA is employed. So high performance in corrosion resistance, abrasion resistance, and penetration proof is obtained.
  • · Other than PFA / PTFE, different types of lining are also available.
  • · Hastelloy® C electrode as standard, and electrodes made of other materials such as Hastelloy® B2, SS316 available.
  • · High accuracy; ±0.5% of reading.
  • · Suitable for various kinds of flanges.
  • · High pressure specification available.
  • · Underwater type (IP 68) lined up.

Main Specifications

Converter for combination MAGMAX series EGC100W, EGC300F/W or others
Excitation method Square wave
Measuring object Liquids
Min. Conductivity 1 μS/cm
(Water: 20 μS/cm)
Flow range Max. 0 to 33928 m³/h
Min. 0 to 0.085 m³/h
Flow velocity range Max. 0 to 12 m/s
Min. 0 to 0.3 m/s
Fluid temperature -40 to +180°C
Fluid pressure To be within rated pressure of Flange.
(Temperature and pressure depend on the liner material to be used.)
Nominal size 10, 15, 20, 25, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350,
400, 450, 500, 600, 700, 800, 900, 1000 mm
(For size over 1000 mm, consult TOKYO KEISO.)
Process connection Flange connection
Equiv. to JIS 10K
Equiv. to JIS 20K, ANSI class 150/300,
DIN PN 10/16/25/40
(Unavailable depending on size and liner material.)
Wetted part material
Size 10 to 20 mm: PTFE
Size 200 to 600mm: PTFE
Size 25 to 150 mm: PFA
Size 200 to 1000mm: ETFE (Option: PTFE, Polyurethane rubber)
Hasteloy® C4
(Option: Hastelloy® B2, Stainless steel/SS316, Titanium, Tantalum, Platinum-Iridium)
Earth ring: 
Stainless steel/SS316
(Option: Equiv. to Hastelloy® B or Hastelloy® C, Titanium, Tantalum)
Meter body material
Measuring tube: 
Stainless steel/SS304
Primary head housing: 
Size ≤ 20 mm: Cast duplex stainless steel*
Size >25 mm: Carbon steel*
Option: Stainless steel/SS304
Carbon steel*
Option: Stainless steel/SS316L
Aluminum alloy
*Anti-corrosive painting
Measuring accuracy ±0.5% of reading
(The accuracy changes, depending on the type of converter combined with EGS4000F.)
Power supply Supplied from a converter
Protection class IP66/67(IEC 60529)