Buchi Rotavapo R-220 SE User Manual download pdf (Page 36)

5 Putting into operation

36 R-220 SE Operation Manual, Version F

5.3.1 Level sensors

Description of function:

The capacitive level sensors are recommended for setups with two receiving ﬂasks to achieve unin-

terruptible evaporation over a longer period and for larger product volumes. The sensitivity of the

capacitive level sensors must be adjusted to safely detect the liquid level between different products.

Installation instructions:

• Mount the sensor at the vessel and connect it at the rear-side connection panel a.

• Fill in some solvent.

• Shift the sensor until it is located below the liquid level.

➥ The red LED at the sensor should now be off.

• If the sensor does not safely detect the liquid:

➥ Use a small screwdriver to set the sensitivity (with the small adjustment screw) b of the

sensor.

NOTE

• The sensor detects a liquid when the red LED is off. The message "Level 1" or "Level 2" is

displayed on the Rotavapor display, depending on the tested sensor loop.

LEVEL 2

LEVEL 1



Front view

Rear view ➡ The crosshair marks the sensitive area

Status LED

Adjustment screw

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Buchi Rotavapo R-220 SE User Manual Page 36