Grundfos DDA (XL)-AR Series Smart Digital Diaphragm Dosing Pump with Pulse Analogue Control

The Grundfos DME940-4AR PP/V/G-F-31A2A2I is a high-capacity SMART Digital diaphragm dosing pump engineered for accurate and reliable chemical dosing in industrial, water treatment, and process applications. Designed with advanced digital motor control technology, the DME series delivers precise chemical injection with smooth continuous dosing performance and exceptional dosing accuracy across a wide operating range.

Featuring AR control functionality with pulse and analogue input capability, this dosing pump is ideal for automated systems requiring integration with PLCs, SCADA systems, flow meters, and process controllers. The intelligent digital control system allows operators to easily configure dosing rates directly in litres per hour while maintaining consistent and stable chemical injection under changing system conditions.

The PP/V/G material configuration includes a polypropylene pump head, Viton seals, and glass ball valves, providing excellent chemical resistance for a wide range of aggressive chemicals including acids, alkalis, disinfectants, and water treatment solutions. The integrated anti-cavitation function improves performance when dosing viscous or degassing chemicals, while the built-in calibration and priming functions simplify commissioning and maintenance.

With a maximum dosing capacity of 940 litres per hour at pressures up to 4BAR, the DME940-4AR is suited for large-scale chemical dosing systems including water treatment plants, wastewater facilities, industrial process systems, cooling towers, fertigation systems, and mining applications.

FEATURES

• SMART Digital diaphragm dosing technology
• Maximum flow rate of 940LPH
• Maximum pressure of 4BAR
• Pulse and analogue control functionality
• High-accuracy digital dosing control
• Polypropylene pump head construction
• Viton seals for chemical resistance
• Glass ball valve configuration
• Smooth continuous dosing operation
• Integrated anti-cavitation mode
• Batch, timer, manual, and proportional dosing modes
• External start/stop input
• Dual level monitoring inputs
• Alarm relay output
• Easy-to-use backlit LCD display
• Built-in calibration and priming functions
• IP65 enclosure protection
  

APPLICATIONS

• Water treatment systems
• Wastewater treatment plants
• Industrial chemical dosing
• Cooling tower treatment
• Fertigation systems
• pH correction systems
• Chlorination systems
• Mining and industrial processing
• Chemical transfer systems
• OEM dosing skids

SPECIFICATIONS

• Model: DME940-4AR PP/V/G-F-31A2A2I
• Maximum Flow: 940LPH
• Maximum Pressure: 4BAR
• Pump Head Material: Polypropylene (PP)
• Seal Material: Viton (V)
• Valve Ball Material: Glass (G)
• Control Type: Pulse Analogue (AR)
• Enclosure Rating: IP65
• Power Supply: 100–240V, 50/60Hz