PSG Biotech Support

From Laboratory to Commercial Scale

Find the information you need to help maintain your pumps.

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Four Piston Diaphragm Pumps Support (incl. Additions & Accessories)

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Ultrasonic Sensors Support

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Q-Control Pumps

Quattroflow Q-ControlSmart Control of Your Biotech Pump Operations

Q-Control is an integrated pump controller for Quattroflow® multiple-use and single-use pumps. It interfaces with a variety of flow and pressure sensors to provide the user with automated control over their pump operations. With built-in smart control functions that no longer require an external PLC, Q-Control leads to a new generation of Quattroflow biotech pumps.

  • Integrated pump controller that interfaces with different flow and pressure sensors
  • Smart control functions that usually require an external PLC
  • PID control mode for pressure- or flow-controlled pump operations
  • Autotune function to automatically find optimal PID parameters
  • Configurable alarms to stop the pump
  • Dispensing feature to automatically fill defined volumes of liquid
  • RS485 Modbus communication port
  • Trend data and alarm logging
  • Remote operation
  • Available for Quattroflow quaternary diaphragm pump models: QF30, QF150, QF1200, QF2500 and QF4400


Functions Description
Manual Mode Manual motor speed selection
Manual Flow Manual motor speed selection with flow calculation
External Mode External pump control
Dispense Mode Automated dispensing of preconfigured volumes
Pressure Control Mode Automated pressure control, e.g. for filtration; requires a connected pressure sensor
Flow Control Mode Automated flow control, e.g. for cross-flow control; requires a connected flow sensor
Alarms Free configurable alarms
PIN Codes PIN code protection of configuration settings
USB Port
Backup of system configuration setting
Data logging
Installation of firmware updates


I/O Signals Potential use
3 x analog input 4-20mA
1 x analog input 0-10 VDC
incl. 24 VDC supply voltage for sensors
External sensor (e.g. pressure and/or flow)
External pump control
3 x digital inputs Diaphragm monitoring
External start/stop
High pressure switch
1 x RS485 (Modbus RTU) Signal monitoring
Pump remote control


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