Walchem, EWN-C36TAUYM-3, Electromagnetic Metering Pump, 30 PSI Max Pressure, PVDF Pump Head with Multifunction Valve and EFS Sensor System
Features:
- High Speed Performance
- E-Series pumps operate up to 360 strokes-per-minute with adjustments in 1 spm increments, providing high-resolution chemical feed. Adjustable stroke length further increases the ability to refine the output, making the E-Series one of the most versatile solenoid metering pumps on the market.
- Multi-function Digital Controller
- The controller in the EWN-Y pump provides flexible pump control including scalable Analog control, Digital Input with Multiply and Divide capability, external stop control, batch control, auto output control with the EFS sensor, and basic speed/stroke length control. Display can be adjusted between flow rate units or % speed for easy-to-read output and quick adjustment. The controller is universal voltage so it can be used anywhere in the world.
- Engineered Longevity
- All E-Series pumps feature dual bearing support. The armature and shaft are supported with a bearing on each end, which ensures proper axial movement, enabling the E-Series to operate at 360 SPM while extending the life of the diaphragm.
- Superior Check Valve Performance
- Dual Check Valve Assemblies in both suction and discharge fittings feature precision ball guides and tapered seats. Precise machining and molding of parts limit valve ball travel, ensuring that balls fully seat and seal with every stroke. This superior check valve design guarantees fast priming and reliable performance.
- Flexible Connections
- A removable tubing insert provides flexibility of tubing sizes and eliminates twisting of the tubing during connection. A threaded insert can be used in place of the tubing adapter to easily convert any connection to NPT.
- High Compression Ratio
- The compression ratio of a metering pump is important because it affects the pump's ability to prime and vent. The compression ratio is raised when you reduce the dead volume of the pump head during operation. All E-Series pumps feature a very high compression ratio that ensures proper feed, especially with off-gassing products (i.e., Sodium Hypochlorite).
- EFS Sensor:
- The EWN-Y Series pump combined with EFS flow sensor provides accurate real-time control and display of the dosing rate.
- Set point control allows the desired flow rate to be simply programmed into the pump. The pump will change rate to achieve the target flow rate - all without any time-consuming calibration.
- The EFS is easily mounted directly to the pump discharge, connects to the control unit with supplied connector, and self-recognizes and initializes the sensor.
- The EWN-Y provides a clear display of actual measured dosing rate and provides a 4-20 mA output signal proportional to the flow rate.
- Operating history such as total volume, number of strokes, power cycles, and power-on time are stored in memory and can be viewed for validation.
The EWN Series electronic metering pumps offer superior high-speed dosing capability with more standard features. The flexibility of the EWN pump enables it to be integrated into virtually any chemical feed application using a universal-voltage, digital controller with an expanded set of control features. Superb valve performance and advanced solenoid engineering combine to make a highly precise dosing pump for the most demanding applications.
EWN Series pumps have outputs to 6.7 GPH (25.2 L/h) and a maximum pressure of 290 PSI (20 bar). The high speed of operation results in high-resolution chemical feed and long service life. Quiet and compact, the EWN pumps prime in seconds and hold prime reliably.
EWN-Y controller provides various features, outputs, and flexible pump control including scalable Analog control, Digital Input with Multiply and Divide capability, Batch control, external Stop, AUX and Interlock inputs, analog and alarm outputs as well as simple speed & stroke length control. The display can be adjusted between flow rate units, % speed, or SPM for easy-to-read output and enables quick adjustment. The controller is universal voltage so it can be used anywhere in the world.
For more information, please see 
Data Sheet and User Manual
