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Brand: Tokyo Keiso
Tokyo Keiso MAGMAX EGM2100C Compact Electromagnetic Flowmeter
Description
Compact electromagnetic flowmeter for water, sewage and hot water
The Tokyo Keiso MAGMAX EGM2100C is a lower-cost compact electromagnetic flowmeter for water, sewage and hot water. It combines the EGS2000 primary head, lined with polypropylene or hard rubber, with the EGC100 converter, and adds empty-pipe detection and conductivity monitoring to the self-diagnostics.
Sizes from 25 mm to 1000 mm are offered. Polypropylene liners (25 to 150 mm) are rated for process temperatures up to 90 °C, which suits hot water, while hard rubber covers 25 to 1000 mm up to 80 °C. Electrodes are Hastelloy C22 as standard, and the catalogue states 0.5% of reading accuracy with fast data processing for batch control and pulsating flow.
Technical specifications
Data from Tokyo Keiso technical guidance TG-F2228-E00 (1st edition, February 2022).
| Parameter | Specification |
|---|---|
| Manufacturer / model | Tokyo Keiso MAGMAX EGM2100C (primary head EGS2000, converter EGC100) |
| Nominal sizes | 25, 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350, 400, 450, 500, 600, 700, 800, 900, 1000 mm |
| Measuring range | Velocity 0.3 to 12 m/s; flow 0.531 m3/h (25 mm) to 33,928 m3/h (1000 mm) |
| Accuracy | 0.5% of reading at 0.5 m/s or more; 0.3% of reading plus 0.001 m/s below 0.5 m/s; current output adds 0.01 mA |
| Liner | Polypropylene 25 to 150 mm (standard), hard rubber 200 to 1000 mm (hard rubber optional on 25 to 150 mm) |
| Fluid temperature | Polypropylene -5 to +90 °C; hard rubber -5 to +80 °C |
| Maximum pressure | Polypropylene 4.0 MPa (25 to 80 mm except 65 mm), 1.6 MPa (65, 100 to 150 mm); hard rubber 15 MPa |
| Conductivity | 20 microsiemens per cm or more (accuracy reference 150 microsiemens per cm) |
| Electrodes / body | Hastelloy C22 (SS316 optional); measuring tube SS304; head housing carbon steel, flanges carbon steel (SS316L optional) |
| Flanges | JIS 10K/20K, ASME class 150/300, DIN PN10/16/25/40 depending on liner |
| Protection / ambient | IP66/67; -40 to +65 °C operation |
| Power supply | 100 to 230 V AC (85 to 253 V), 48 to 63 Hz, about 8 VA; or 24 V DC (11 to 31 V), about 4 W |
| Outputs | 4-20 mA DC; open-collector pulse up to 10 kHz; status output; double range and bidirectional measurement |
| Display | Backlit dot-matrix LCD 128 x 64: flow rate, velocity, total, conductivity, coil temperature |
Features that help on water and sewage lines
The extendable excitation system suits fluids with noise such as slurry, and the excitation frequency can be switched from the standard one-sixth of supply frequency to a special mode between 1/50 and half of supply frequency. Double-range measurement (low range 5 to 80% of the high range) switches automatically, and flow alarms, empty-pipe detection, error and range identification are available on the status output. Push buttons below the cover allow settings to be changed without opening the converter section.
The unit stores operation parameters and totals in non-volatile memory for more than ten years, simulates current, pulse and status outputs for loop checks, and supports user-defined units of seven characters.
Selection and ordering notes
The liner decides the temperature and pressure limits, so the catalogue includes tables of temperature, pressure and permissible vacuum load by liner and size, plus a liner and flange combination table. Vacuum is not accepted with polypropylene at 90 °C, and larger hard-rubber sizes need a higher minimum absolute pressure than small ones. For sizes above 1000 mm Tokyo Keiso asks for a consultation. This meter is intended for non-hazardous service; the catalogue lists a general (non-explosion-proof) type only.
How the Tokyo Keiso EGM2100C works
Coils around the measuring tube make a magnetic field across the flow. Water is a conductor, so a moving column of water makes a small voltage between two electrodes. The voltage is in proportion to the flow velocity. The converter amplifies this voltage and turns it into flow, total and output signals.
Where the EGM2100C is used
- Water supply lines
- Sewage and wastewater lines
- Hot water circuits
- Water treatment plants
- Batch filling and dosing lines
Selection checklist for the EGM2100C
- Nominal size
- Flow range
- Liner material
- Fluid temperature
- Line pressure
- Flange standard
- Power supply, AC or DC
- Output signals
Installation, commissioning and maintenance notes for the EGM2100C
Fit the meter in a full pipe with straight pipe run before and after it. Connect the grounding as the manual shows. Wire the supply and the outputs. Set the pipe size and the range in the converter. Check the empty-pipe and conductivity values at start-up.
Requesting a quotation for the Tokyo Keiso EGM2100C
Please send the pipe size, the fluid, the temperature and the flange standard. Seven Star LLC serves industrial customers in Oman and the GCC and replies with a quotation based on the information provided.
EGM2100C sizes
Sizes run from 25 mm to 1000 mm.
EGM2100C velocity range
The velocity range is 0.3 to 12 m/s.
EGM2100C accuracy
The accuracy is 0.5 percent of reading at 0.5 m/s or more.
EGM2100C liners
The liner is polypropylene for 25 to 150 mm and hard rubber for larger sizes.
EGM2100C fluid temperature
Polypropylene suits up to 90 degrees C and hard rubber up to 80 degrees C.
EGM2100C electrodes
The standard electrodes are Hastelloy C22.
EGM2100C conductivity
The fluid conductivity must be 20 microsiemens per cm or more.
EGM2100C power supply
The supply is 100 to 230 V AC or 24 V DC.
EGM2100C outputs
The outputs are 4-20 mA, a pulse output up to 10 kHz and a status output.
EGM2100C display
The converter has a backlit dot-matrix LCD of 128 x 64.
EGM2100C protection
The enclosure rating is IP66/67.
Flowmeter records for the EGM2100C
Record the pipe size, the range setting and the date of each zero check.
Choosing the right EGM2100C liner
Choose polypropylene for hot water in small sizes and hard rubber for large sewage lines.
Documents and quotation
The Tokyo Keiso EGM2100C catalogue is attached to this page as a PDF with flow ranges, liner tables and the model code. Please send us the line size, liquid, conductivity, temperature, pressure and flange standard so we can quote the right liner and construction. Seven Star LLC is an independent supplier in Muscat; price and lead time are confirmed per enquiry. Related range: flowmeters and the ABB WaterMaster electromagnetic flowmeter.
Datasheets & Documents
- Catalog Tokyo Keiso MAGMAX EGM2100C Compact Electromagnetic Flowmeter catalogue (TG-F2228-E00, 1st edition Feb 2022) Download
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About brand
Tokyo Keiso is a Japanese manufacturer of flow and level instruments, founded in Tokyo in 1954 as Japan's first maker of variable-area flowmeters. It now builds ultrasonic, Coriolis, electromagnetic and variable-area flowmeters plus level gauges, and set up a production subsidiary in Korea in 2012 for non-contact ultrasonic flowmeters.
Seven Star LLC is an independent supplier in Muscat. We list Tokyo Keiso models from the maker's published technical documents for water, oil and gas, power and chemical plants in Oman and the GCC.
Tokyo Keiso company profile
| Founded | 1954, Tokyo, Japan |
|---|---|
| First products | Variable-area flowmeters, a first for a Japanese manufacturer |
| Headquarters | Tokyo, Japan |
| Leadership | Ryoichi Sugi, President |
| Product families | SONICMAX inline and clamp-on ultrasonic flowmeters (UL3400, UL6300, UL350), MASSMAX Coriolis mass flowmeters, electromagnetic and variable-area flowmeters, float and magnetic level gauges |
Milestones
- 1954: Tokyo Keiso is founded as Japan's first variable-area flowmeter maker.
- 2012: TK Flow Engineering is set up in Korea for ultrasonic flowmeter production.
Tokyo Keiso product series
Ultrasonic flowmeters include the UL350 and SONICMAX UL6300 V2 clamp-on meters and the SONICMAX UL3400 three-beam inline meter. Other flowmeters include the MASSMAX 2400R Coriolis mass flowmeter, the VFM4200 SWIRLMAX vortex meter, the MAGMAX EGM2100C compact electromagnetic flowmeter, the TH series thermal gas flowmeters and the VC series V-Cone differential pressure flowmeter.
Level instruments include the TLR7500 80 GHz microwave level meter, the TGF7200 guided radar, the FM4000 MAG GAUGE magnetic metal tube level gauge and the FW-9000NN servo balance tank gauge for storage tanks.
Where Tokyo Keiso instruments are used
Water and wastewater networks, chemical and petrochemical plants, oil and gas facilities, power stations and tank terminals, with outputs such as 4-20 mA, pulse and digital communication for connection to control systems.
Tokyo Keiso products we list
Ordering Tokyo Keiso instruments: what we need
Send the fluid, line size, flow or level range, pressure and temperature, process connection and materials, output signals and any hazardous-area option. Where a catalogue is older or an option is still in preparation, we say so on the product page.
Facts checked against Tokyo Keiso company profiles and a 2022 interview with its president, October 2026.
Browse Tokyo Keiso products by category: Flowmeters, Level Instrumentation.
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Frequently Asked Questions
What liquids is the EGM2100C intended for?
Tokyo Keiso describes it for water, sewage and hot water.
Which liner should I choose?
Polypropylene for 25 to 150 mm lines up to 90 °C; hard rubber for larger lines or up to 80 °C with higher pressure ratings.
What minimum conductivity is required?
20 microsiemens per cm or more.
What accuracy is stated?
0.5% of reading at 0.5 m/s and above, under the catalogue reference conditions.
Can it measure in both directions?
Yes. Bidirectional measurement, double range and status outputs are standard.
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