Hanna Instruments HI 8410 - Manual (Page 15)

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After selecting the range (mg/L or % DO), setting the working point,
hysteresis, salinity factor and alarm value, press the "MEASURE" key. The
DO value of the test solution will be displayed.
If the reading is out of range the instrument displays:
The alarm contacts of HI 8410 remain closed during normal operation. If
the measured conductivity level is not within the tolerance of the set value,
the alarm contact will be open.
HYSTERESIS SET
Turn the hysteresis knob (rear panel) in the desired position (from 0.5 to
2.4 mg/L range).
The dosage will be active according to the DO reading set point value and
hysteresis set value.
TEMPERATURE MEASUREMENT
Press and hold the "°C" key and the display should indicate the temperature
of the tested solution.
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