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Adjustment
16. Adjustment
During assembly you already made your choice for degrees Celsius or degrees Fahrenheit version.
The adjusting method is the same for both, only the values on the display are different. The figures for
Fahrenheit are mentioned within brackets.
The first adjustment is done at the freezing-point.
Fill a beaker with ice cubes and plunge the sensor into the melting-water (Fig. 6.0). As long as not all the ice
is molten, the temperature of the melting-water is kept at 0°C (32°F), and after a few minutes the sensor will
be at 0°C too.
Then adjust with RV2 until the display reads 00.0 (32°F).
After zero-adjustment, the sensitivity of the meter has to be adjusted.
Plunge the sensor into boiling water, but see to it that the sensor does not come too close to the bottom or
wall of the kettle.
After a few minutes, the sensor temperature has risen to 100°C (212°F).
Then adjust with RV3 until the display reads 100.0 (212°F).
Now let it cool down for about half an hour, and do the complete adjustment over again once more.
Remark : when the sensor has to be replaced for any reason, then you have to readjust completely!
16
Fig. 6.0
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