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 1 spm increments allows fine flow adjustment between 1 and 360 spm in continuous chemical feeding.
Multi Voltage
The EWN-W can be used in all countries thanks to the universal power supply (100 – 240 VAC).
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
| Discharge capacity range | 38 – 420 mL/min |
|---|---|
| Max. discharge pressure | 0.2 – 1.0 MPa |
| Main materials | PVC, PTFE |
| Stroke rate | 1 – 360 spm |
| Liquid temperature range | 0 – 40°C |
| Viscous liquid | Please contact us for details. |
| Slurry liquid | Can not be handled. |
Specifications of controller
| Model | WPO | ||
|---|---|---|---|
| Control modes | pH | Oxidation-reduction potential | |
| Control function | Function | AUTO / MANUAL | |
| Control method | Proportional control (PID control) | ||
| Input | Sensor input range | 0.00 – 14.00pH Auto (matic) temperature compensation |
-2000 – 2000 mV |
| Liquid temperature range (Temp. sensor type) | 0 – 99.9°C (Pt1000) | — | |
| STOP / PreSTOP | Red LED lights and the pump stops at contact input. / Orange LED lights at contact input | ||
| AUX | The pump runs at 360 spm when the non voltage contact is on | ||
| Interlock | The pump stops when the non voltage contact is on | ||
| 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 (Select one function) |
|
| Output 2 | The non voltage contact is on (Photo MOS relay) AC/DC 24 V 0.1 A 1. Upper limit output 2. Lower limit output 3. Select of all functions 4. spm synchronous output (Select one function) |
||
| Power voltage | 100 – 240 VAC 50/60Hz | ||
| Model | WEC | WCT | |
|---|---|---|---|
| Control modes | Conductivity | Cooling tower | |
| Control function | Function | AUTO / MANUAL | |
| Control method | Proportional control | Timer control | |
| Input | Sensor input range | 0 – 400 mS/m (0.00 – 4.00 mS/cm) | |
| Liquid temperature range (Temp. sensor type) | 0 – 99.9°C (Pt1000) | ||
| STOP / PreSTOP | Red LED lights and the pump stops at contact input. / Orange LED lights at contact input | ||
| AUX | The pump runs at 360 spm when the non voltage contact is on | Contact is on | |
| Interlock | The pump stops when the non voltage contact is on | ||
| 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 (Select one function) |
|
| Output 2 | The non voltage contact is on (Photo MOS relay) AC/DC 24 V 0.1 A 1. Upper limit output 2. Lower limit output 3. Select of all functions 4. spm synchronous output (Select one function) |
||
| Power voltage | 100 – 240 VAC 50/60Hz | ||
| Model | WCL | |
|---|---|---|
| Control modes | Free residual chlorine (tap water level equivalent, sodium hypochlorite only) | |
| Control function | Function | AUTO / MANUAL |
| Control method | Proportional control | |
| Input | Sensor input range | 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 360 spm 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 (Select one function) |
| Output 2 | The non voltage contact is on (Photo MOS relay) AC/DC 24V 0.1A 1. Upper limit output 2. Lower limit output 3. Select of all functions 4. spm synchronous output (Select one function) |
|
| Power voltage | 100 – 240 VAC 50/60Hz | |
