Features of EWN-R series
High Resolution
The stroke rate can be set with 1 spm increments in between 1 and 360 spm. The stroke length adjustment further assists fine adjustment that the stroke rate adjustment cannot reach. Contentious precise chemical feeding is now available.
Multi Voltage
The use of the multi voltage circuit design allows the pump to work anywhere in the world.
A wide Variation
In addition to the standard type of PVC, GFRPP, PVDF or SUS316 pump head, B- or C-type drive unit and each diaphragm size, the high compression type for gaseous liquid transfer (sodium hypochlorite, etc), the high pressure type for power injection (boiler compounds, etc) and the high viscosity type for viscous liquid transfer (polymer liquid. etc) are available.
Built-In Controller
The EWN-R has the mode of 1:1 operation, multiplier/divider programming control (digital signal) and proportional control (analogue signal) and can dedicate itself to a particular purpose by selecting a suitable mode. Also, the flow rate indication can be converted from spm to L/H or GPH.
Pump Body
The use of the integrated controller reduces a sealing area, so that the water-/dust-proof design of IP65 is attained. Also, a plastic cover protects the control panel under an adverse environment.
Air Vent Valve
Rotating a standard air vent valve, the remained gas can be easily expelled from the pump head.
Multi Hose Connection
The use of a new hose stopper eliminates a twist in tube connection.
Specifications of pump
| Discharge capacity range | 38 – 420 mL/min |
|---|---|
| Max. discharge pressure range | 0.2 – 1.0 MPa |
| Main materials | PVC, GFRPP, PVDF, SUS316, PTFE |
| Stroke rate | 1 – 360 spm |
| Liquid temperature range | PVC type: -10 – 40°C GFRPP type, PVDF type, SUS316 type: −10 – 60°C |
| Viscous liquid | Please contact us for details. |
Specifications of controller
| Operational mode | MAN | 0.1 – 100% stroke rate | |
|---|---|---|---|
| EXT | DIV (Dividing) | /1 – 9999 | |
| MULT (Multiply) | ×1 – 9999 | ||
| ANA.R (Analog, rigid) | 4 – 20, 0 – 20, 20 – 4, 20 – 0 mA | ||
| ANA.V (Analog, variable) | 2 points 0.0 – 20.0 mA range 0.0 – 100% stroke rate | ||
| Control function | STOP/Pre-Stop | Pump keeps running when Pre-STOP is activated. Pump stops when STOP is activated. | |
| Prime | Pump runs at max. stroke rate while up and down keys are pushed. | ||
| Key lock | Key can be locked and unlocked. | ||
| Calibration | Discharge capacity per shot is calculated automatically by operating and stopping pump at calibration mode to make flow rate indication possible. | ||
| Buffer memory | ON or OFF is selectable. Max. 65535 stroke pulses are put in memory. | ||
| Input | Pulse | Non Voltage contact or open collector, Max. 200 Hz | |
| Current | DC 0 – 20 mA (Input resistance 200 Ω) | ||
| Level sensor | No Voltage contact or open collector, 2-steps contact | ||
| AUX | Pump runs at max.stroke rate while AUX signal is input. | ||
| Output | Photo-MOS relay AC/DC 24 V 0.1 A | ||
| STOP, Synchronous with stroke | |||
| Synchronous with stroke is standard. | |||
| Power Voltage | 100 – 240 VAC 50/60 Hz (90 – 264 VAC) | ||
