Hanna Instruments HI 98713 - Manual (Page 11)

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• Press READ to start the measurement.
The display will show blinking dashes and the
icons for cuvet, detectors and LED will appear
during measurement.
At the end of the measurement, the instrument
directly displays turbidity in FNU.
NORMAL MEASUREMENT
This type of measurement can be used for regular measurements, when the sample is stable and
normal accuracy is required. In normal measurement mode, the led is ON for a minimum period of
time (about 7 seconds), saving the battery life. Normal measurement takes about 10 seconds.
If normal measurement is selected, the “AVG” tag will not be displayed.
CONTINUOUS MEASUREMENT
This measurement mode can be used when many measurements have to be taken in a short period
of time. The feature is also useful to evaluate a very fast settling sample. This measurement mode
is recommended for indexing cuvets. After the first reading is taken, the lid opening will not generate
any errors.
The first value is displayed after about 10 seconds and then a new reading is displayed each second.
In order to make a continuous measurement keep READ pressed until the desired number of
measurements are taken. The display will show blinking dashes and the icons for cuvet, detectors
and LED will appear. When a new value is displayed, the cuvet icon and the measurement unit will
briefly blink.
The last value remains on the display after the READ is released.
AVERAGED MEASUREMENT
Select this measurement mode when samples that cause unstable readings are analyzed. By averaging
several readings, the random noise generated by the sample is reduced and accurate measurements
can be taken.
This mode can also be selected when high accuracy measurements are desired. In the average mode
10 measurements are averaged in a short period of time (about 20 seconds). The initial value is
displayed after 10 seconds and the display is updated every second with an intermediate value.
• To select the averaged measurement mode press
AVG .
When this mode is selected, the AVG icon will
be displayed on the LCD.
• Press READ to start the average reading mode.
The display will show blinking dashes and the
icons for cuvet, detectors and LED will appear
during measurement. When a new partial value
is displayed, the cuvet icon and the measurement
unit will blink shortly.
When the measurement is ended, the final
averaged result is displayed directly in FNU.
RANGE AND UNITS
HI 98713 automatically selects the correct range
to display the results with the highest accuracy. If
the measured value is higher than 1000 FNU (over
range), the display will show the maximum value
blinking.