Features of EWN-W series

Controller variation
WPO(pH/ORP), WEC(conductivity), WCT(cooling tower) and WCL(Free residual chlorine) controllers are available. Also, the extra large LCD improves legibility and ease of operation.
High resolution
Stroke speed adjustment in 1spm increments allows fine flow adjustment between 1 and 360spm in continuous chemical feeding.
Multi voltage
The EWN-W can be used in all countries thanks to the universal power supply(100-240VAC).
Adjustable tube fitting
Newly-designed adjustable tube fittings eliminate tube twisting when fastening.
Pump body
The molded pump body with a minimum of sealing surfaces meets a high level (IP65 equivalent) of both waterproofness and dustproofness.

Specifications of pump

Max. discharge capacity range 38 – 420 mL/min
Max. discharge pressure 0.2 – 1.0 MPa
Main materials PVC
Stroke rate 1 – 360 spm
Power supply AC 100 – 240 V, 50/60 Hz, single phase
Liquid temperature range 0 – 40˚C
Viscous liquid Please contact us for details.
Slurry liquid Can not be handled.

Specifications of controller

Model WPO WEC WCT WCL
Control modes pH Oxidation-reduction potential Conductivity Cooling tower Free residual chlorine
Control function Function AUTO / MANUAL
Control method Proportional control (PID control) Proportional control Timer control Proportional control
Input Sensor input range 0.00 – 14.00pH, Automatic temperature compensation –2000 – 2000mV 0 – 400mS/m (0.00 – 4.00mS/cm), Automatic temperature compensation 0.00 – 3.00 mg/L, Automatic temperature compensation
STOP / PreSTOP Red LED lights and the pump stops at contact input. / Orange LED lights at contact input
AUX The pump runs at 360spm when the non voltage contact is on Contact is on The pump runs at 360spm when the non voltage contact is on
Interlock The pump stops
Output Output 1 The non voltage contact is on (Mechanical relay) AC250V3A 1. Upper limit output 2. Lower limit output 3. Select of all functions 4. spm synchronous output (Select one function)
Output 2 The non voltage contact is on (Photo MOS relay)AC/DC24V V0.1A 1. Upper limit output 2. Lower limit output 3. Select of all functions 4. spm synchronous output (Select one function)

Product information

Catalogs and Download
Product data, catalogs, and instruction manuals can be downloaded from the member site.
※ Membership registration is required.

Contact Us

Kindly use this inquiry form for placing an order or sending your inquiry
about our fluid control devices including chemical pumps.