Applications
AutomotiveCommercial/Industrial Grade Grundfos Pumps > Digital Dosing/Metering Pumps
DME and DMSDigital Dosing is here! With the easy to read digital display, what you set is what you get. Using the keypad, pump performance is
set with the touch of a button. Each control variant offers a new level of functionality to satisfy your metering pump needs.
The fundamental difference between DME and DMS pumps is the type of electronically controlled motor used to drive them. The DMS utilizes a synchronous motor to vary stroke frequency upon demand. In addition, the DMS can be turned down to 1/100 of its maximum capacity. Depending on size, the DME's stepper or brushless DC motor varies the the discharge stroke speed. The extended discharge phase of the DME results in better, more even mixing, which can be turned down to 1/1000 (DME 2 to DME 48) or 1/800 (DME 60 to DME 940) of its maximum capacity. The DME and DMS A, AR, and B versions all offer a digital keypad and easy to use menu. Capacity is set by adjusting the desired flow rate in g/h, l/h, or ml/h. Also included are a priming button, calibration mode, electronic lock, and internal counters of strokes, operating hours, and times the pump has been powered on/off. DME 2 to 48These DME's offer the following methods of control: manual, external pulse, analog (0/4-20 mA), timerbased batch, and pulse-based batch. Additional standard functions include dosing monitoring, anticavitation, max-capacity limitation, and connections for level controls. An optional alarm relay is available with variant AR pumps. Optional fieldbus communication is available with variant AP (Profibus) pumps. DME 60 to 150With all the features of the smaller DME's, the large models offer a basic manually controlled pump (variant B) or the externally controlled version with standard alarm relay (variant AR). Fieldbus communication is available with variant AP (Profibus). DMSDMS-A pumps can be controlled manually, or with an external pulse or analog (0/4-20 mA) signal. Additional standard functions include connections for the dosing monitor and level controls. Optional alarm relays are also available on variant AR pumps. The DMS- B offers basic manual control with the digital keypad. DMS-DThe DMS-D does not have a digital display, and is controlled by manipulating the power supply. DDIFormerly known as the TrueDos 209 and 222 from Alldos, these Digital Dosing pumps feature a speed controlled motor for smooth continuous feed. The DDI 209 is available with the optional Plus3 system so gases vent automatically that might cause most pumps to lose prime. The standard AR version allows for capacity to be adjusted manually using the keypad, or remotely with an analog (0/4-20 mA) or pulse contact. For additinal monitoring and security, select a DDI AF with a built-in flow monitor that can sense gases from the pump head, cavitation, and pressure changes that result from line breaks or a blocked discharge. The advanced DDI AM features the Plus3 system fitted with a sensor that measures and regulates flow, resulting in a self-calibrating pump. For Fieldbus communication, use the DDI AP that's Profibus ready.
DMXThe DMX 221 and 226 are motor driven mechanically actuated diaphragm metering pumps. The DMX can be configured to meet the demands in a variety of applications. Manually change the stroke length of the DMX B to reduce capacity. For external control the DMX AR (Etron Profi) can receive a pulse or analog signal. The DMX 226 is available in a duplex version for doubled capacity. For additional control, use a servo motor to externally control the stroke length.
DMHThese mechanically actuated hydraulic diaphragm pumps were formerly known as the Alldos KM and are available in simplex and duplex versions. Like the DMX, manually control capacity of a DMH B by adjusting the stroke length, or use the AR version for external control.DMIThe DMI 208 features a synchronous motor that reduces the shock and vibration common to most solenoid driven pumps. Control capacity manually by adjusting the stroke length (variant B), or use the A version for remote on/off and pulse frequency control. For external control with alarm output, use the DMI AR. The DMI can also be fitted with the Plus3 system to faciliate handling of difficult fluids like sodium hypochlorite.
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Grundfos Dosing Metering Pumps Capacity Guide
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