Electromagnetic metering pumps EWN-Y series

Max. discharge capacity range: 38 to 420 mL/min

Electromagnetic metering pumps with precise flow monitoring, feedback & control

Electromagnetic metering pumps EWN-Y series

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Features of EWN-Y series

Displaying flow rate (with EFS)

The required flow rate is simply input to the pump. Through feedback from the EFS sensor, the pump constantly adjusts its speed to maintain the set dosing rate - even under changing temperature, viscosity, or suction & discharge pressure conditions.

Feedback control (with EFS)

The EWN-Y gives a proportional 4 to 20mA output signal of dosing rate and displays operating history such as total flow volume and power-on time.

Discharge detection

Direct connection to the IWAKI FCP or FCM flow counter (excluding certain low- pressure models) allows effective monitoring of pump discharge (number of shots). Gas lock, abnormal pressure (only with FCP), etc., are also detectable.

Alarm output and analog output functions are provided as standard function

Two types of alarm outputs and analog output are provided as standard functions. The analog output can be used for flow rate monitoring.

Waterproof structure (IP65)

With the aim of improving resistance to exposure to liquid, the controller unit is installed on the back of the pump and the control panel is protected with a cover as standard equipment. A rubber gasket is provided between the pump head and the bracket to prevent water from entering from the periphery of the pump head.

Multi hose connection

Multi hose connection

The use of a new hose stopper eliminates a twist in tube connection.


Max. discharge capacity range 38 to 420 mL/min
Max. discharge pressure 0.2 to 1.0 MPa
Main materials PVC, GFRPP, PVDF, SUS316
Stroke rate 1 to 360 spm
Power supply AC 100 to 240 V, 50/60 Hz, single phase
Liquid temperature range
  • PVC type: −10 to 40˚C
  • GFRPP type, PVDF type, SUS type: −10 to 60˚C
Viscous liquid Please contact us for details.
Slurry liquid Can not be handled.

Specifications of controller

Model EWN-Y With EFS Without EFS  
Operational mode MAN control MAN(Manual) available.jpg available.jpg 0.1-100.0%(1-360spm)
Feedback control available.jpg N/A 0.1 - 999.9mL/min
0.001 - 59.994 L/H
0.001 - 15.829 GPH
EXT control DIV N/A available.jpg /1-9999
MULT N/A available.jpg x1-9999
Analog rigid available.jpg available.jpg 4 - 20, 20 - 4, 0 - 20, 20 - 0mA proportional control to stroke rates
Analog variable available.jpg available.jpg 2 - point setting (Analog variable)
(Proportional control to flow/stroke rates in the range of 0 - 20mA)
BATCH available.jpg N/A 0.1 - 99999.9 mL
0.001 - 99.999 L
0.001 - 26.385 G


Pulse signal input
for batch control
No voltage contact or open collector (Note 1)
Analogue 0 - 20mADC (Input resistance is 220Ω.)
(Level sensor)
No voltage contact or open collector (Note 1)
AUX No voltage contact or open collector (Note 1)
Interlock No voltage contact or open collector (Note 1)
Batch No voltage contact or open collector (Note 1)
Output OUT1

No voltage contact (Mechanical relay), 250VAC 3A (Resistive load)
Either the Signal recognition output (Note 2), Control error, or Poor flow detection is selectable (default: STOP).


No voltage contact (PhotoMOS relay), AC/DC24V 0.1A
Either the Sensor signal output, Synchronous output, Signal recognition output (Note 2), Control error or Poor flow detection is selectable.

Analogue 4 - 20mA DC (Allowable load resistance : 500Ω)
Data logging

Total flow volume
Total number of strokes (1=1000 shots)
Total number of signal outputs (OUT1)
Total number of signal outputs (OUT2)
Total power connection time
Total operating time

Buffer memory Nonvolatile memory

Note 1: The maximum applied voltage from the pump to an external contact is 12V at 2.3mA. When using a mechanical relay, its minimum application load should be 1mA or below.
Note 2: STOP/ Pre-STOP/ Interlock/ Batch completion outputs are separately enabled.

Optional accessories

EFS flow sensor
EFS flow sensor
The EFS flow sensor is an electromagnetic flow sensor for the electromagnetic metering pump, EWN-Y series. The flow sensor can measure the volume per stroke of pulsating output without the assistance of pulsation dampeners.

FCP flow counter (Posi-flow)
FCP flow counter (Posi-flow)
The FCP flow counter (Posi-flow) detects the pump pulsation by a pressure sensor. This sensor can check not only the number of dosing but also abnormal pressure (Low and high) as pipe clogging, gas-lock or pipe leakage.

FCM flow checker
FCM flow checker
The FCM is a simple flow checker for the electromagnetic metering pump. A magnet molded float sensor and proximity switch detects pulsation of dosing output.

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