Grundfos® DIGITAL DOSINGT DME

No more complicated calculations
In the past, traditional metering pumps forced you to resort to complicated calculations to find the right setting. The exact dosage required to ensure that your dosing system was economical and safe had to be found by trial and er­ror. And you would have to do it all over again whenever you needed to make adjustments. That’s all changed with Grundfos Digital Dosing. Now, you simply specify the dosage you want and let the pump do the rest. Digital Dosing represents innovation in its purest form. This patented Grundfos solution uses new principles and methods to set an entirely new standard for dosing technology. It makes your job a lot easier and your results much better.

The DME series of high-precision diaphragm pumps are the cornerstone of the highly successful Digital Dosing series from Grundfos. They were the first to combine high-precision dosing with unprecedented user-friendliness, and they remain the best in the business today.

The DME 0.00066 gph – 12.68 gph (2.5 ml/h – 48 l/h) pumps use stepper-motor technology in an entirely new way. The variable-speed motor remains in contact with the diaphragm throughout the entire discharge/suction cycle, controlling its speed at all times. This ensures a much greater level of control compared to traditional dosing pumps.

User-Friendly Dosing
The Digital Dosing range eliminates the need for complicated calculations associated with other dosing equipment. In effect, the simple user interface lets you be your own dosing specialist, using a minimal number of buttons to give access to an impressive range of control features.

Variable Speed for Smooth Dosing
The ingenious stepper motor runs continually, ensuring that the discharge phase extends through­out the full period between suction phases. This gives a better, more even mix. The motor auto­matically adjusts the dosing speed to provide the right amount of additive at all times.

Full Stroke Length at All Times
DME from 0.00066 to 12.7 gph (48 l/h)
DME – Larger Pumps from 0.02 to 39.7 gph (60 - 150 l/h)
Grundfos uses a full stroke length every time, thereby improving accuracy and efficiency. The stroke speed is carefully adjusted to ensure even concentrations of additive in your media.

Turndown Ratio 1:1000
DME from 0.00066 to 12.7 gph (48 l/h)
The Digital Dosing range is designed to give you superior flexibility and accuracy with a minimal number of pump variants. With a turndown ratio of 1:1000, the DME range will remain accurate even when dosing in very small amounts.

Turndown Ratio 1:800
DME – Larger Pumps from 0.02 to 39.7 gph (60 - 150 l/h)
Digital Dosing pumps can be adjusted to 1/800 of their maximum capacity. Two new sizes pro­vide even more flexibility, from 0.02 to 39.6 GPH (75 to 150 ml/h

Smooth, Continuous Feed
DME 375/940
The 800:1 turndown ratio means the large DME will continuously deliver chemicals down to 1/800 of full speed. Precise speed control of the brushless DC motor eliminates the need for a servo-motor/frequency converter or additional variable speed drives.

Anti-Cavitation
DME from 0.00066 to 12.7 gph (48 l/h)
The variable speed of the DME pumps facilitates a unique anti-cavitation function for high-viscosity liquids. This function gives you slower suction speed (70% of the maximum speed), thereby ensuring optimal priming and pumping of even the most difficult liquids.

Anti-Cavitation
DME – Larger Pumps from 0.02 to 39.7 gph (60 - 150 l/h)
For handling viscous polymers or other difficult liquids, slow down the speed of the suction stroke to 75%, 50%, or 25% of the maximum speed.

Calibration
With Digital Dosing, calibration is easier and faster than ever. Simply place a graduated glass under the pump and activate the calibration program. The pump will perform 100 strokes and indicate how much it thinks it has pumped. Adjust the figure by entering the correct numbers if necessary. After this dosage can be adjusted without recalibrating the pump.

14 Different Languages
As part of the Digital Dosing series, Grundfos DME pumps can be set to one of 14 different lan­guages, making them perfect for integration in products aimed at a worldwide market.

Counter
The built-in counter function provides easy access to information about the accumulated number of strokes, accumulated operating hours and flow, as well as the total number of times the pump is switched on.

Several Material Variants
The DME pump heads are available in several different materials to suit your situation: stainless steel, PVDF, and polypropylene for an environmentally friendly and cost-efficient alternative.

*Some of the features only apply to certain models please check the complete DME product guide in the support materials