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Commissioning
Calibrate the flask level sensor
The flask level sensor (S4) must be calibrated during the initial commissioning and every time
the solvent is changed.
WARNING
In case of inadequate calibration or failure of a level sensor (S4), over-
flow/leaking of the flask contents is prevented by an emergency stop
sensor (S3)!
As soon as this sensor responds in the cooler, the Distimatic Pro and the
connected peripheral devices are switched to a safe operating state and
no further medium is fed in.
CAUTION
The function of the level sensor in the evaporation flask (S4) may be
affected by electromagnetic fields. This can lead to a loss of the opera-
tional quality of the entire system.
During calibration, commissioning and operation, ensure that there are no
sources of interference in the immediate vicinity of the evaporation flask
to ensure proper operation of the level sensor at all times.
To calibrate the flask level sensor, follow these steps:
➜
Make sure that the sensor is connected to the Distimatic Pro correctly.
➜
Switch on the Distimatic Pro and wait approximately 10 minutes for the electronics to
warm up to operating temperature. In this way, measurement inaccuracies are avoided
during calibration!
Calibration to maximum sensitivity, low-polar solvents:
➜
Remove the sensor from the evaporation flask.
➜
Hold the sensor in the open space.
➜
Make sure there are no objects or bodies in a hemispherical space one (1) meter in front of
the sensor head. These would be detected as a signal and falsify the calibration result!
In extreme cases, there is a danger of the emer-
gency stop sensor (S3) not clearly detecting the
overflow of very low polar media such as hexane
or heptane. If you change to such a medium,
contact our application specialists if necessary (see
„Heidolph International contact information" on page
148).
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