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8 Calibration
70
✱
Press the
key.
The LC display now shows the conductivity on the right (399µS/cm) at the
current temperature (24.3°C).
On the left, you can see the other temperatures – T1 (25°C) and
T2 (70.0°C) – that are to be used.
✱
Press the
key.
✱
Warm up the sample medium until it reaches the working temperature.
As soon as the temperature of the medium goes above T1 (25°C), it will be
blanked out of the display. The uncompensated conductivity at the present
temperature is shown on the right.
When the temperature of the medium has risen above T2 (73.0°C), the device
calculates the temperature coefficient.
The LC display now shows the derived temperature coefficient in %/°C.
✱
Use the
key to confirm the temperature coefficient, or
use the
key to reject the value.
During calibration, the rate at which the temperature changes in
the sample solution must not exceed 10 °C per minute
Calibration can also be carried out through a cooling procedure
(falling temperature). In this case, it starts above the working
temperature and finishes below the reference temperature.
PGM
PGM
PGM
EXIT
Summary of Contents for AQUIS 500 CR
Page 94: ...12 device description 94 ...
Page 96: ...12 device description 96 ...
Page 98: ...13 Index 98 ...
Page 99: ......