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7800 Digital Dosing Pump
Brand: Burkert Fluid Control Systems
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.