Errors and warnings – Hanna Instruments HI 96728 User Manual
Page 9
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ERRORS AND WARNINGS
The instrument shows clear messages when erroneous condition appears. Messages are also
displayed when the obtained values are outside expected range. The beeper is playing a beep on
errors.
a) on zero reading
Light High:
There is too much light to perform a measurement.
Please check the preparation of the zero cuvette.
Light Low:
There is not enough light to perform a measurement.
Please check the preparation of the zero cuvette.
No Light:
The instrument cannot adjust the light level. Please
check that the sample does not contain any debris.
Inverted cuvettes:
The sample and the zero cuvette are inverted.
Zero:
A zero reading was not taken. Follow the instructions of
the measurement procedure for zeroing the meter.
b) on sample reading
Under Range:
A blinking “0.0” indicates that the sample
absorbs less light than the zero reference. Check the procedure
and make sure you use the same cuvette for reference (zero) and
measurement.