7800 Digital Dosing Pump

Brand: Burkert Fluid Control Systems
Does not ship to United States

The Type 7800 digital dosing pump is characterised by a drive principle that is completely new for dosing pumps. The drive is carried out by a microprocessor-controlled stepper motor, which is connected directly to the diaphragm by a crankshaft-and-connecting-rod drive. 

This means that, in contrast to conventional dosing pumps, the position and the speed of the diaphragm is controlled by the microprocessor electronics during the complete discharge/ suction cycle. The microprocessor-controlled compression stroke results in a dosage that is considerably more even, particularly with small dosages. 

The 7800 dosing pump always works with the maximum stroke length, whereby a high accuracy for the dosing over the full setting range and a lower sensitivity with respect to gaseous media is achieved. 

Through an optimised clearance volume ratio with the full stroke length, the accuracy and function is ensured, even for difficult degassing liquids. Through the anticavitation function, the drive is optimally adapted to the dosing of high viscosity liquids.
Features
  • Continuous dosing through digitally controlled stepper motor drive
  • Limitation of the max. dosage through software
  • Setting range for the dosage 1:1000
  • High accuracy over the complete setting range

Specifications

Ambient Temperature Range

  • 0° to 45° C (32° to 113° F)

Consumption

  • Power: 18 W, Max.
  • Power: 22 W, Max.

Display

  • LCD Display

Electrical Connectors

  • Power Supply Cable: 1.5 H05RN-F with Plug

Environmental Protection

  • IP65

Flow Capacity

  • Capacity At, Max.

Frequency

  • 50/60 Hz

Hose Connection

  • 4/6” Hose - 7800-2, 7800-8, 7800-12
  • 6 / 9” Hose
  • 9 / 12” Hose - 7800-19, 7800-48

Input

  • Voltage Impulse Input: 5 Vdc

Input Impedance

  • Analog Input: 250 ohms

Materials of Construction

  • Pump Head: Polypropylene (PP)
  • Pump Head: PVDF

Operating Voltages

  • 100-240 Vac

Pressure Range

  • psi: 37.7 to 261 (kPa: 260 to 1,800, bar: 2.6 to 18) - Max.

Process Temperature

  • 0° to 50° C (32° to 122° F)

Pulse Range

  • Repetition Period: 3.3 milliseconds Min.

Ratio

  • Setting Range: 1:1,000

Repeatability

  • ± 1 % of Full Scale

Seat / Seal Material

  • Seal: EPDM
  • Seal: FKM

Tube Connection

  • 4/6” Tube - 7800-2, 7800-8, 7800-12
  • 6 / 9” Tube
  • 9 / 12” Tube - 7800-19, 7800-48

Viscosity

  • 100 to 200 MPas, Max.

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