Tokyo Keiso MAGMAX EGM2100C Compact Electromagnetic Flowmeter

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).

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.