Julabo MAGIO MS, Original Operating Manual, Page: 82 / 108

Operation
82
8.12 Adjusting the temperature sensor (ATC)
For physical reasons, there can be a temperature difference in the bath tank
between the temperature sensor and a defined, more remote point within the
bath fluid volume. As a result, the measured temperature deviates slightly from
the actual bath temperature. Adjustment of the temperature sensor can increase
accuracy of the temperature control application.
The adjustment of a temperature sensor requires the determination of the
temperature difference between the temperature sensor and the reference
thermometer. Three adjustment options are available:
• 1-point adjustment: When a sample is tempered to a certain setpoint. The
adjustment curve is displaced parallel to the original curve by the reference
amount.
• 2-point adjustment: When the temperature is controlled between two
setpoints. The slope of the temperature curve is adjusted between two
points.
• Multi-point calibration: When temperature is controlled within a
temperature range. This results in an arched temperature curve.
8.12.1 Adjust internal temperature sensor
This section describes how to adjust the internal temperature sensor of the
device.
 The device is switched on.
 The bath tank is at least two thirds full.
 A calibrated reference thermometer is available.
1. Temper the sample to the desired setpoint temperature.
2. Wait until the temperature in the bath has stabilized and is shown on the
display of the circulator.
3. Hang the reference thermometer in the bath tank near the tempered
sample.
4. Read the temperature value on the reference thermometer.
5. Call up the
<Main menu>
and then the submenu
<Install unit>
.
6. In the submenu <Adjust temperature sensors> select the function
<ATC internal>
.
7. Press the [Add new correction point] button.
 Two options are displayed for selection.
8. If you press [Accept current temperature], the current measured
temperature is adopted and the dialog window for entering the
corresponding correction value opens.