DME - DMS

Summary

Product identification

• Grundfos ALLDOS Digital Dosing™ pumps: DME and DMS series.
• The type key provides a detailed breakdown of model numbers, including maximum capacity, maximum pressure, control variant, dosing head material, gasket material, valve ball material, control panel position, supply voltage, connection type, and valve type.

Operating limits

• Performance Range:
  • DME pumps cover a range from 0 to 940 l/h up to 18 bar.
  • DMS pumps cover a range from 0 to 12 l/h.
• Temperatures:
  • Maximum liquid temperature: 50 °C
  • Minimum liquid temperature: 0 °C
  • Maximum ambient temperature: 45 °C
  • Minimum ambient temperature: 0 °C (DME 0-48 l/h, DMS), -10 °C (DME 60-940 l/h)
• Viscosity (Maximum suction lift: 1 metre):
  • DME (0-48 l/h) & DMS (0-12 l/h):
    • With spring-loaded valves: 500 mPas (= cP)
    • Without spring-loaded valves: 200 mPas (= cP)
  • DME (60-940 l/h):
    • With spring-loaded valves: 3000 mPas at 50% capacity
    • Without spring-loaded valves: 200 mPas
• Suction Lift:
  • Maximum suction lift during operation: 6 m
  • Maximum suction lift when priming with wet valves:
    • DME 2, DMS 2, DMS 4: 1.8 m
    • DME 8, DMS 8, DME 12, DMS 12, DME 19, DME 48: 3 m
    • DME 60, DME 150, DME 375, DME 940: 1.5 m
• Accuracy of repeatability: ±1%
• Maximum stroke frequency:
  • DME (0-48 l/h), DMS-A and AR, B: 180 strokes/min
  • DME (60-940 l/h): 160 strokes/min
  • DMS-D (50 Hz): 187.5 strokes/min
  • DMS-D (60 Hz): 225 strokes/min

Feed water

• The pumps are designed for dosing highly viscous and gas-containing liquids.
• The anti-cavitation function extends and smooths the suction stroke to assist with these liquid types and long/high suction lines.
• A "List of pumped liquids" is mentioned in the table of contents but not provided in the extract. See the official PDF for details.

Electrical

• Supply Voltage:
  • DME pumps: 1 x 100-240 V, 50-60 Hz (switch-mode power supply).
  • DMS pumps: 1 x 230 V –13%/+10%, 50 Hz; 1 x 120 V –12%/+8%, 60 Hz; 1 x 100 V ±6%, 50/60 Hz.
• Power Consumption:
  • Maximum current consumption and P1 power consumption vary by pump model and voltage. See the official PDF for exact tabulated values.
• Enclosure Class: IP65
• Insulation Class:
  • DME pumps: B
  • DMS pumps: F
• Signal Input:
  • Voltage in level sensor input: 5 VDC
  • Voltage in pulse input: 5 VDC
  • Minimum pulse-repetition period: 3.3 ms
  • Impedance in analog 0/4-20 mA input: 250 Ω
  • Maximum loop resistance in pulse signal circuit: 350 Ω
  • Maximum loop resistance in level signal circuit: 350 Ω
• Signal Output (Alarm Relay):
  • Maximum load at ohmic load: 2 A
  • Maximum voltage: 250 V (DME 0-48 l/h, DMS 0-12 l/h), 42 V (DME 60-940 l/h).
• Dosing Output (DME 60-940 l/h):
  • Open collector (NPN) for relay or lamp.
  • Max. current: 100 mA (using internal 5 VDC supply)
  • Max. 24 VDC - 100 mA (using external power supply)

Mechanical / hydraulic

• Pump Type: Motor-driven diaphragm dosing pumps.
• Dosing Head: Designed with minimum clearance for optimal priming and deaeration, includes built-in valve housings and an integrated vent valve.
• Diaphragm: PTFE-coated, textile-reinforced EPDM, designed for long life.
• Valves: Standard double-ball suction valve and single-ball discharge valve. Spring-loaded valves are available as an option (spring material: Hastelloy).
• Vent Valve Connection:
  • DME and DMS (0-48 l/h): 4/6 mm PVC tubing.
  • DME (60-940 l/h): 15/20 mm PVC tubing.
• Drive Unit:
  • DME pumps: Electronically controlled variable-speed motor. Capacity regulated by automatic adjustment of motor speed during discharge stroke and fixed suction stroke speed.
  • DMS pumps: Electronically controlled synchronous motor. Capacity regulated by automatic regulation of stroke frequency.
• Connections: Sturdy and easy-to-use connections for various sizes of tubing, pipe thread, or pipe cementing.
• Control Panel Position: Front-fitted or side-fitted (optional, not including DMS-B).
• Weight and Diaphragm Diameter: Vary by pump model. See the official PDF for exact tabulated values.
• Sound Pressure Level: Lower than 70 dB(A).

Control Features

• Digital Dosing™ Technology: Patented Grundfos solution for precise and low-pulsation dosing.
• Capacity Setting: Directly readable in ml/h or l/h, pulse or batch, with operation mode identified by icons.
• Turn-down Ratio:
  • DME (0-48 l/h): 1:1000
  • DME (60-940 l/h): 1:800
  • DMS: 1:100
• Operating Modes:
  • Manual control (constant dosing in l/h or ml/h).
  • Pulse control (dosing according to external pulse signal, set in ml/pulse).
  • Analog 0/4-20 mA control (dosing proportional to external analog signal).
  • Timer-based batch control (DME-A only: set quantity dosed in batches at maximum or limited capacity, with settable intervals).
  • Pulse-based batch control (DME-A only: set quantity dosed in batches upon external pulse).
• Integrated Functions:
  • Dosing monitoring (compares internal strokes with external measurements).
  • Dual-level control (requires connection to level sensors).
  • Calibration of pump to actual installation.
  • Anti-cavitation (reduced suction speed for viscous/degassing liquids, or long/high suction lines).
  • Maximum capacity limitation (DME only: reduces maximum capacity, allowing a large pump to operate as a smaller one).
  • Counters for strokes, operating hours, and power on/off.
  • Fieldbus communication (DME only: GENIbus for variant AG up to 48 l/h, PROFIBUS DP for variant AP).
  • Overload protection.
  • Error messages in display.
  • Diaphragm leakage sensor (DME 60-940 l/h).
• Control Panel: Features LCD display with backlight, soft-touch buttons, on/off, priming button, green indicator for operation, red indicator for fault.
• Alarm Relay Output: Available on AR variants, activates an external alarm signal via a potential-free contact.
• Control Panel Lock: Buttons can be locked with a PIN code to prevent maloperation.
• Units: Selectable between metric (litres, millilitres) and US (gallons, millilitres) units.
• Languages: English, German, French, Italian, Spanish, Portuguese, Dutch, Swedish, Finnish, Danish, Czech, Slovak, Polish, Russian.

Disclaimer This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the official OEM PDF datasheet. For contractual data and complete product information, always refer to the specific OEM PDF revision used on your project.

Official datasheet (PDF)

Lenntech datasheet mirror