Electromagnetic Metering Pump - Superior Precision & Control.

The EWN-R Series electronic metering pumps offer superior high speed dosing capability with more standard features. The flexibility of the EWN-R pump enable it be integrated into virtually any chemical feed application using a universal-voltage, digital controller with an expanded set of control features.

• Up to 360 spm High Resolution Feed
• Digital Display and 5-Button Keypad
• Flow Rates from 0.5 to 1.7 GPH
• Pressures up to 290 PSI
• Optional Feed Verification

Superb valve performance and advanced solenoid engineering combine to make a highly precise pump for the most demanding applications. EWN pumps have outputs to 6.7 GPH (25.2 L/h) and a maximum pressure of 250 PSI (17 bar). The high speed of operation results in high resolution chemical feed pumping and long service life. Quiet and compact, the EWN pump prime in seconds and hold prime reliably.

Electromagnetic Metering Pump

• 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 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-R pump provides for flexible pump control including scalable Analog control, Digital Input with both Multiply and Divide capability, external stop control, or simple speed and 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.
• Electromagnetic Metering Pump 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).

Features of integrating the EFS Sensor with the EWN-Y Pump:

• The EWN-Y Series electromagnetic metering 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.
• The optional Auto Air Vent Valve (ADV) can be mounted in-line with the EFS sensor for a combination to eliminate gas-lock conditions quickly with continuous venting.
• 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.