MAGMAX®

EGM7300C
Capacitance detection typeCompact Electromagnetic Flowmeter
GENERALMAGMAX® EGM7300C adopts flat capacitance detection typeelectrodes which are located outside of measuring tube made ofceramics instead of the conventional liquid contacting metallic
electrodes for detection of flow velocity.
Thanks to the capacitance detection and non-wetted electrodedesign, EGM7300C has achieved the stable measurement of very
low conductivity liquids, highly concentrated slurries and adhesiveliquids.
With the self-diagnosis function EGM7300C has intensified itsreliability by monitoring status of primary head.

FEATURES❏ Low conductivity liquid measurement down to 0.05 μS/cm
Organic solvents, demineralized water....Liquids which have notbeen measured by Electromagnetic flowmeters due to low
conductivity are now in the range of measurement !
❏ High anti-corrosive capability, high durability against erosion....
The non-wetted electrodes and high-purity ceramics measuring
tube have eliminated all existing problems such as corrosion,
erosion and electrode troubles.
❏ Stable measurement even for highly concentrated slurry liquids
Free from noises generated when solid particles in slurry
contacting to the electrodes thanks to non-wetted electrodedesign.
❏ Stable measurement of high adhesive liquids
Without liquid contact, non-wetted electrodes are very durable
against adhesive liquids. Maintenance free !
❏ High anti-vibration capability
Flat capacitance electrodes and pre-amplifier are fully integrated on
the outer surface of measuring tube by Microsystems Technology.
Eliminating the vibration effects caused by internal wirings,
EGM7300C with the rigid and fixed construction has reduced
significantly fluctuations of indication effected by process vibration compared with the conventional capacitance type electromagnetic flowmeters.
❏ High accuracy of ±0.5% of reading❏ Blue dot matrix LCD with back lightVersatile indications with 1 to 3 lines of display❏ Quick and easy setting up when altering of flow rate range andpulse rate
A touch panel system by an infrared sensor allows you to alter
the settings without removing the cover of the conversion section.
❏ 10 kHz high-speed pulse output
Capable of responding to short batch processes❏ Compact design with high performance
Current and pulse output, bi-directional measurement, doublerange, status (alarm, etc.) output, control input…Full function
provided in compact design.

STANDARD SPECIFICATION● Excitation: Square wave
: 25, 40, 50, 80, 100 mm● Measuring range : Flow velocity
Min. 0 to 0.3 m/s
Max. 0 to 12 m/s
Flow rate
Min. 0 to 0.531 m3/h
(Minimum flow rate atsize 25 mm)
Min. 0 to 339 m3/h
(Maximum flow rate atsize 100 mm)● Protection class: IP66/67 (IEC 60529)● Nominal size

● Housing material

Primary head
: Stainless steel (SS304)
Converter: Aluminum alloy *1● Wetted part material
Measuring tube : Size 25 mm : Zirconia ceramics (ZrO2)
Size 40 to 100 mm : Alumina ceramics(99.7% Al2O3)
Earth ring
: Stainless steel/SS316 (Standard),
Hastelloy® B, Hastelloy® C, Titanium,
Tantalum *2, *3
Gasket for earth ring *3 : PTFE jacket type with joint sheet coreequivalent to Valqua No. 7035 as stan
dard or Fluorocarbon resin equivalent
to Valqua No. 7020.
● Painting: Siloxane coating *4● Color: Grey (Converter housing), Jade green(Converter cover / Terminal box cover)● Cable entry: 2 × G1/2 female thread or
2 × 1/2 NPT female thread or
2 × M20 with water tight glands(Option : Water tight glands for G1/2)(Option : with 3 pieces of cable entries)● Supply voltage: 100 to 230 V AC (85 to 253 V)
Option: 24 V DC (11 to 31 V)● Supply frequency : 48 to 63 Hz● Power consumption : AC : approx. 22 VA, DC : approx. 12W● Ambient temperature : -40 to +65°C ( Fluid temp. ≦100°C)-50 to +70°C ( For storage)● Process connection : Wafer type (sandwiched between flanges)● Flanges: equivalent to JIS10K/20K/30K/40K,
equivalent to ASME class 150/300, DIN
PN16/40● Grounding: Grounding resistance must be less than 100Ω

*1 Anti-corrosive painting*2 Tantalum earth ring is a combination of tantalum plate and Teflon
PTFE jacket type gasket with Viton core.
*3 Refer to "Operating range for the earth ring gaskets".
*4 Converter housing only. No painting on the stainless steel primary head.
TG-F2234-E00
1st edition Feb 2022 KMAGMAX® Capacitance detection type Compact Electromagnetic Flowmeter EGM7300C● Fluid specification● Low flow cut off

Conductivity: 0.05 μS/cm or more
(1 μS/cm or more for water)* Refer to "Minimum fluidconductivity" table.
Temperature: -40 to +100°CPressure: Size 25 to 80mm: 0 Pa (abs) to 4MPa
Size 100mm: 0 Pa (abs) to 1.6 MPa
Permissible temperature change :Temperature rising in 10 minutes : ΔT ≦ 125°C
for sudden change : ΔT ≦ 120°C
Temperature falling in 10 minutes : ΔT ≦ 100°C
for sudden change : ΔT ≦ 80°CIndication and Output Specification● Indicator: Blue, dot matrix LCD with back light

128 × 64 pixels (59 × 31 mm): Changeover of Max. 2 screens with 1
to 3 lines of display at one screen.
Flow rate, total flow volume, flow
velocity and coil temperature areindicated.
● Current output: 4 to 20 mA DC (Max. 22 mA ; Scaleout at error status)
When using internal power supply : Load resistance 1000 W or less
When using external power supply : External voltage 32 V DC or less
● Pulse output
Open collector output
Rating: 32 V DC or less, 20 mA or less (≦10 kHz)
100 mA or less (≦ 100 Hz)
Pulse rate
: 2 to 36,000,000 pulse/h (0.00056
Hz to 10 kHz)
Pulse width
One of the following selectable :1) AUTO : Pulse width by which duty factor to be 50% at fullscale2) Duty factor 1: 1 fixed3) Free setting : 0.05 to 2000 ms● Status output
Open collector output
Rating : 32 V DC or less, 100 mA or lessContents of output
One of the following selectable :1) No status output (Standard factory setting)2) Identification of flow direction3) Over range
4) Error5) Flow alarm6) Identification of range (For double range measurement)7) Empty flow detection● Control input
Voltage input
Low : 0 to 2.5 V DC, High: 19 to 32 V DCContents
One of the following selectable :1) No control input (Standard factory setting)2) Signal hold3) Signal lock to 0%
4) Total counter reset
5) Error reset
6) Range selection (For double range measurement)● Description of input and output terminal
DisplayTerminals

2Standard settings

Changeover by setting

A（A、A＋／A−）

Current output─

B（B、B−）

Status output

Control input

C（C、C−）

Status output

─D（D、D−）

Pulse output

Status output

TOKYO KEISO CO., LTD.

Capable of individual setting of current output, pulse output,indication
Setting value: 0.0 to 20.0 % F.S.
Standard setting values
Current output, pulse output : ON 1%, OFF 2 % F.S.
Indication: No low cut-off● Damping time constant :Capable of individual setting of current output, pulse output, indication
Setting value: 0.0 to 100.0 seconds
Standard setting values
Current output, indication: 4 seconds
Pulse output: 0 second● Isolation of input and output
Each circuit of power supply, electrode input, exciting current
output, terminal A, terminal B, terminal C, terminal D is isolated.

Standard Functions● Customer’s free measuring unit setting function

Volume (or mass) and time units in 7 characters can be created.
Available any flow measuring units for indication.
● Automatic zero adjustment function
Zero adjustment is automatically conducted at “ZERO ADJUST
MODE” (Subject to zero flow)● Bi-directional flow measurement function
A flow-direction signal is outputted in state output and current.
● Double range measurement function
Possible range setting range ratio 1 : 20 to 1 : 1.25
(Setting range of low range : 5 to 80% of high range)
Range selection; By automatic or external signal(Control Input)● Excitation current frequency switching function
Standard mode
: 1/6 of power supply frequency
Special mode
: 1/50 to 1/2 of power supply frequency *5● Self-diagnosis function
Following major error messages are indicatedFunctional diagnosis: Coil disconnection, CPU, Memory,
Soft ware, Output module, Output
connection
Status diagnosis: Velocity distribution, Linearity,
Exciting current/ frequency, Overrange, Counter over flow, Power faildetection● Memory save function for power failOperation parameters and totalization figures are stored formore than 10 years by EEPROM (Non volatile memory).
● Testing function
Simulation tests for current, pulse, status outputs are available.
Current output: any value between 0.0 to 22.0 mA
Pulse output: any value between 1 Hz to 10 kHz
Status output: On/Off● Setting by touch sensor with infrared
Four infrared sensors allow you to alter settings from outside
without removing cover.
● HART Communication: Standardized*5 The excitation current frequency can be altered according to an
application such as pulsation flow or etc.

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MAGMAX® Capacitance detection type Compact Electromagnetic Flowmeter EGM7300C

Explosionproof

Minimum fuluid conductivity● ATEX Explosionproof [in preparation]

Nominal size（mm）

Accuracy *6

Pure water (mm)Other than pure water25

1.0（5.0）

0.05（0.5）

For velocity ≥ 1 m/s : ±0.5% of reading40

1.0（5.0）

0.05（0.5）

For velocity < 1 m/s : Velocity error of ±0.005 m/s

50

1.0（2.5）

0.05（0.2）80

1.0（2.5）

0.05（0.2）100

1.0（2.5）

0.05（0.2）● Indication and pulse output

3.0

Remark : Figures in ( ) indicates minimum recommended liquid conductivity
for process control purpose which requires short time response.

2.5Error ±% of reading

Type of liquid and minimum conductivity (μS/cm)

2.0

It will be required to set relatively long time constant in case theconductivity of the liquid is lower than indicated value in ( ).

1.5
1.0

Suggestions and cautions for low conductivity
liquid measurement

0.5

1. Straight runs

0.001212Velocity (m/s)

liquid with low viscosity such as pure water and alcohol.

● Current output: Additional error of ±0.01 mA is added onto

the accuracy of indication and pulse output.
*6 Reference condition
Fluid

Flow noise may affect measurement in case of low conductivity
The following straight runs for upstream and downstream areneeded.
Type of liquid: Water

Fluid temperature: 10 to 30°C

Conductivity: 150 μS/cm or more

Low viscosity andLow conductivity(Pure water,alcohol etc.)

Power supply voltage : Rated voltage ±2 %Ambient temperature : 18 to 28°C
Upstream and downstream straight runs
: 10 D and 2 D ( D: Inside diameter)
Warm up time

: about 10 minutes

Measuring time: 100 seconds

Other liquids thanabove

Operating range for the earth ring gaskets
GasketPTFE jacket type with joint sheetcore(equivalent to VALQUA No.N7035)

Upstream
10DExpansions
Control valves
Half opened gate valves

20D

Reducers
Elbows, Tees
Fully opened gate valves

5DExpansions
Control valves
Half opened gate valves

10D2D2D[D : Nominal diameter (mm)]Fluid pressure Fluid temperature≤1.5MPa

Down stream

Reducers
Elbows, Tees
Fully opened gate valves≤100°C

2. Control valves and half-opened gate valves are recommended to
3. More than 30D straight run is recommended in case a pump isinstall downstream of flowmeter.

Fluorocarbon resin(equivalent to VALQUA No.7020)≤4MPa≤100°C

Tantalum earth ring
(Teflon PTFE jacket type gasket withViton core)≤0.7MPa≤100°C

installed.

Flow range
Nominal size
Possible setting range (m3/h)（mm）Min. (Flow velocity: 0 to 0.3 m/s) Max. (Flow velocity: 0 to 12 m/s)

TG-F2234-E00

25

0 to 0.531

0 to 21.2

40

0 to 1.36

0 to 54.2

50

0 to 2.13

0 to 84.8

80

0 to 5.43

0 to 217

1000 to 8.49

0 to 339

TOKYO KEISO CO., LTD.

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MAGMAX® Capacitance detection type Compact Electromagnetic Flowmeter EGM7300C

DIMENSIONS
Nominal size 25 to 100 mm
260（26）1371201401403838ESC

H2H3（H）

82

1076

Earth ringH1φdGrounding terminal(M5)

WL

Flow direction (Standard)

Nominal size（mm）

Dimensions（mm）
L *1（H）

H1H2H3WdMass（kg）

25

69

271

34

167

237

102

68

6

40

94

286

42

174

244

117

84

7

50

114

304

51

183

253

136

102

880

164

336

67

199

269

168

134

11100

214

361

79

212

282

193

158

13

*1 (1) Face to face dimension of the flowmeter in which PTFE jacket type gasket is used for earth ring, is the same as "L" mm.
Face to face dimension of the flowmeter in which fluorocarbon resin type gasket is used for earth ring, is "L-2" mm.
(2) Face to face dimension of flowmeter in which tantalum type is used for earth ring is, "L-5" mm for the size 2.5 to 15 mm, and "L-1" mm for the size 25 to 100 mm.

DiDa

DIMENSIONS FOR CERAMIC TUBEDimensions（mm）Nominal size
（mm）

DaDiX

Y

25242026

55

40

37

30

3680

50

49

40

51

100

80

78

60

70

150

1009880

103200X
Y

4TOKYO KEISO CO., LTD.

TG-F2234-E00

MAGMAX® Capacitance detection type Compact Electromagnetic Flowmeter EGM7300C

ELECTRICAL CONNECTION
Mounting positions of display
changed as follows.

Version A

Version B

Version C

A− A＋ B

B−CC−

DD−NL

（L−（）L＋）

The orientation of the display in contrast to flow direction can beA

Please specify your requirements. We are ready to deliver the flowmeters accordingly.
The arrow indicates the direct flow direction as standard. The reverse
flow direction can be set by altering setting data if required so.

A protection cover is provided for power supply terminals
Power supply terminal cover

Description

Terminals
L／L＋

AC power/DC power L＋（＋）
・L−（−）

N／L−

GroundingTerminals

Description

D−—

Pulse output or Status output

DC−＋—

Status output

CB−＋—

Status output or Control input

B
A＋

Current output (4 to 20 mA/
HART: internal power supply)A−

Current output
Current output (4 to 20 mA/ (4 to 20 mA/HART:
HART: internal power supply) external power supply)

APolarity• Terminal type＋＋——＋: Plug-in type screw terminal• Applicable core size : 0.5 to 2.5 mm2TG-F2234-E00

TOKYO KEISO CO., LTD.

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MAGMAX® Capacitance detection type Compact Electromagnetic Flowmeter EGM7300C

MODEL AND SPECIFICATION CODE
● Nominal size : 25 to 100 mm

Model: EGM7300C
Primary head
V N 1 9 4Spec. code
Primary head code V N 1 94(Fixed code)

N1 C 08BCE
F

Nominal size

Process connection
Use purpose
Type(Fixed code)

N0
1 C0

Earth ring / Gasket for earth ring

*1(Fixed code)
Protection class(Fixed code)
Calibration(Fixed code)
Special feature

Converter Spec.
code
Converter code
(Fixed code)
TypePower supplyUse purpose
Cable entry(Fixed code)
Housing(Fixed code)
Outputs(Fixed code)
Special feature

0 0 0 0 0 0 2 0 0 0 0 0

V N 3 0 4 5
V N 3 041236KLRST9Standard

Description

Wafer / Ceramic, Capacitance detection type
always 4Connection flange size
25A
1"
25 mm
40A
1-1/2"
40 mm
50A
2"
50 mm
80A
3"
80 mm
100A
4"
100 mmWafer type (sandwiched between flanges)
General purpose (Non explosionproof)
Compact version (EGC300/CAP converter)always 0
Stainless steel SS316 / PTFE
Hastelloy® C / PTFE
Max. press. : 1.5MPaHastelloy® B / PTFE
Titanium / PTFE
Stainless steel SS316Ti / Fluorocarbon resin
Hastelloy® C / Fluorocarbon resin
Max. press. : 4MPa
Hastelloy® B / Fluorocarbon resin
Titanium / Fluorocarbon resin
Tantalum with PTFE gaskets
Max. press. : 0.7MPa
Othersalways 00
IP66 / IP67
0always 000 00
Standard calibration
always 0200000
0 2 0 0 0 0 0(Blank) None
Involved *2／Z

2 0 0 1 2 1 0 0 0 0 0

○
○
○
○
○
○
○
○
○
○
○
○

○
○
○
○
○
○

Standard

Description

Type : EGC300/CAP (cylindrical housing)always 4
with LCD display
524 V DC (11 to 31 V)
1
100 to 230 V AC (85 to 253 V)
AGeneral purpose (Non explosionproof)
0
1/2 NPT female thread4
G1/2 female thread
5with M20 watertight cable gland
6
always 200
2 0 0
Aluminum alloy as standard
1
always 2
2
Current output + pulse output + control input + status output as standard
1
always 00000
0 0 0 0 0(Blank) None/Z
Involved *2

○
○
○
○
○
○
○
○
○
○
○
○

*1 Refer to "Operating range for the earth ring gaskets".
*2 In case that Special feature are involved, put [ / Z] at the end of spec. code and specify the details.
It is recommended to consult TOKYO KEISO for such availability before ordering.

6TOKYO KEISO CO., LTD.

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MAGMAX® Capacitance detection type Compact Electromagnetic Flowmeter EGM7300C

STANDARD ACCESSORIES● Parameter sheet:1● Instruction manual:1OPTION● Bolts and nuts for mounting on pipe : 1 set [Symbol : BN]

Material : Stainless steel SUS 304 for JIS10K flange● PTFE jacket gaskets for mounting on pipe

2 pieces [Symbol : FG]

VALQUA No. N7030 for JIS10K flanges
Note : Suitable size of bolts, nuts and gaskets matching mating
flanges will be provided. Please specify the flange rating
and size other than JIS10K if those fittings are requested.
● G1/2 water tight glands for cable entry : [Symbol : WG]● Number of cable entries: 3 pieces [Symbol : 3G]

ORDERING INSTRUCTIONS
1. Model and specification codes
ExampleModel : EGM7300C
Primary head spec. code
: VN1948N01C01000000200000
Converter spec. code
: VN3045A0520012100000
2. Full scale flow range
3. Optional requirements will be added using above mentioned symbols if required.
4. Fluid name* Specification is subject to change without notice.

Head Office : Shiba Toho Building, 1 – 7 – 24 Shibakoen, Minato-ku, Tokyo 105 – 8558
Tel : +81-3 – 3431 – 1625 (KEY) ; Fax : +81-3 – 3433 – 4922
e-mail : overseas.sales@tokyokeiso.co.jp ; URL : https://www.tokyokeiso.co.jp

TG-F2234-E00

TOKYO KEISO CO., LTD.

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