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Willie HillAug 17, 2025
What to do if the Emergency cut off key of DCU is enabled in Sartorius Control Systems?
- JjasonsalazarAug 18, 2025
If the Emergency cut off key of the DCU is enabled, release the 'SHUT DOWN' state by pressing the key again.
What to do if the Emergency cut off key of DCU is enabled in Sartorius Control Systems?
If the Emergency cut off key of the DCU is enabled, release the 'SHUT DOWN' state by pressing the key again.
What to do if the Emergency cut off key of fermentor is enabled in Sartorius DCU 3 Control Systems?
If the Emergency cut off key of the fermentor is enabled, switch on the fermentor by pressing the SHUT DOWN key again.
How to fix a defective Pt-100 in culture vessel or unplugged cable in Sartorius DCU 3 Control Systems?
Check the cable and plug. If the connection is ok, the sensor may be defective; in this case, replace the sensor.
What to do if overheat protection of motor is activated in Sartorius DCU 3?
If the overheat protection of the motor is activated, let the motor cool down before switching on the fermentor again.
What to do if automatic cut-out of the supply unit is activated in Sartorius Control Systems?
If the automatic cut-out of the supply unit is activated, switch it on again. If the alarm repeats, contact service.
How to check broken cable of the analog 4..20 mA input in Sartorius Control Systems?
Check the cable connection and the connected peripheral unit.
What to do if the sensor turbidimetry measurement is disconnected or defective in Sartorius Control Systems?
Check the sensor and replace it if necessary.
What to do if the overheat protection of thermostat cycle is activated in Sartorius DCU 3 Control Systems?
Refill the thermostat cycle (see details in Operating Manual of fermentor).
What to do when Sterilisation is finished in Sartorius Control Systems?
After confirmation with 'ACK'nowledge, the fermentation process can be started.
How to confirm alarm of digital input in Sartorius DCU 3?
Confirm the alarm with 'ACK'nowledge.
General| Category | Control Systems |
|---|---|
| Manufacturer | Sartorius |
| Model | DCU 3 |
| Input Voltage | 100-240 V AC |
| Frequency | 50/60 Hz |
| Storage Temperature | -20°C to 60°C |
| Protection Class | IP20 |
| Relative Humidity | max. 85% non-condensing |
Performing routine calibration functions for fermentor operation.
Two-point calibration procedure for the pH electrode.
Two-position calibration for percentage oxygen saturation measurement.
Functional check and calibration of the Redox electrode.
Single-step calibration procedure for the turbidimetry sensor.
Monitoring and totalizing dosing times for corrective agent pumps.
Taring and calibration of balance systems for weight measurement.
Calibration for measuring substrate weight and calculating flow rate.
Cascade control for vessel and jacket temperature regulation.
Controlling the stirrer motor speed via an external controller.
Controlling airflow using an external massflow controller.
PID control for pH using pulsewidth modulated outputs for acid/base.
Using a pO2 controller with up to three servo controllers sequentially.
Controlling pO2 by mixing gases like N2 and O2.
Controlling external continuous pumps for nutrient solution addition.