Product Features

• High-frequency electromagnetic metering pumpThe stroke frequency can reach 360 times per minute, thereby significantly reducing the pump's dimensions and weight, making it suitable for the addition of various liquids.。

• Extremely strong chemical resistanceThe pump head materials available include PVC, GFRPP, PVDF, and SUS. Additionally, all wetted end materials offer excellent corrosion resistance, with options such as Hastelloy C267, ceramic, fluororubber, PTFE, and others. You can select the most suitable wetted end material to transport a wide variety of media.。

• A variety of models are available for selection.To meet the needs of adding different chemical liquids, the IWAKI EHN series metering pumps have been developed into four standardized products based on different operations and functions (EHN/R is the basic model, EHN/Y is used for industrial process control, EHN/W is used for water treatment control, and EHN/E is used for high-flow addition).). Different automatic control processes can be achieved through external accessories such as controllers and sensors.。

• Fine-tuneA digital controller is used, allowing the stroke frequency to be adjusted within the range of 1 spm to 360 spm. Combined with the adjustment of the stroke length, precise regulation from the minimum flow rate to the maximum flow rate can be achieved.。

• Multiple pump headsProvides a variety of standard pump heads (VC/VH), automatic venting type (NAE), and high compression ratio type (Type 55).。

• Control unitThe multifunctional EHN-Y and EHN-R control units are standard products, featuring digital input and analog signal input capabilities.。

• Exhaust valveLow-flow models (EHN-11, 16, and 21) are equipped with an exhaust valve, allowing air in the pump chamber to be easily released by turning the exhaust knob.。

• Wide voltage power supplyAll models adopt AC100~240V wide voltage specifications to avoid issues caused by power voltage differences.。

• Waterproof/Dustproof DesignThe drive unit and control unit feature a waterproof/dustproof design with an IP66 protection rating, but they must not be installed outdoors.。

• Hose connectionNew hose plug design eliminates twisting during hose connection.。

• AccessoriesIncluding unidirectional PC5 type, check valve, auxiliary valve, flow detector, T-type plug, etc.。

• Controller and pump head assemblyDifferent combinations can meet a wide range of application requirements.。

• EHN-R Series Controller FunctionsThe post-programming key lock function prevents accidental operation and features EXT and STOP functions. Manual operation: Button-controlled run/stop and stroke frequency setting (1 spm to 360 spm). EXT operation: Pulse multiplication (1:1), storing up to 255 pulse signals. STOP function: External contact signal stops the pump, making it convenient for use with liquid level sensors.。

Technical Parameters

• **Traffic：450mL/min

• **Pressure / Stress：1.0MPa

• Main material：PVC, GFRPP, PVDF, SUS316

• Power range：16～24W

• Liquid temperature range：0～60℃

• Viscosity range：0～50mPa.s

Application Scenarios

• Boiler chemical injectionThe EHN series pump can operate precisely at low flow rates, making it suitable for injecting pure boiler chemicals diluted with wood torches.

• Electroless Plating SystemThe EHN-R model can be used for transporting electroplating liquids and controlling the conductivity of pure water.

• Distilled water does not have a sterilizing effect.The pump injects the bactericide proportionally based on the signal from the pulse flowmeter and the flow rate of purified water, ensuring a constant mixing concentration.

Selecting Accessories

• Check valveUsed to prevent over-supply, backflow, and siphoning. There are three types:

• It seems your input "CAN型" is incomplete or unclear. Could you please provide the full sentence or context you'd like me to translate from Chinese to English? I'll ensure to keep HTML tags, numbers, and technical terms unchanged as requested.Standard accessories.

• CBN typePipe check valve, installed between hoses.

• CS typeStainless steel material, suitable for high-temperature liquids, can be used for general applications or boiler applications.

• bufferInstalled on the discharge hose to dampen vibrations caused by pulsation.

• Hose Flange ConnectionUsed to connect hoses to flanges, with some models equipped with check valves.

• Hose connectorUsed for reliable connection between hoses and rigid pipes.

• Threaded connectionProvided information related to threaded connections, but specific data was not given in the excerpt.