Hanna Instruments HI 88703 - Manual (Page 20)

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• Press the Read key to take the measurement.
The display will show “ READ” in the left side and
blinking dashes. The icon for lamp will appear
during different measurement phases. The first
value is displayed after 10 seconds and then a new
average of the available readings is displayed each
second. When a new value is displayed, the
measurement value will blink briefly. The last
averaged value remains on the display at the end
of the measurement.
• Press the Read key and keep it pressed to take continuous readings.
The display will show “ READ” in the left side and blinking dashes. The dashes and lamp icon will
appear during different measurement phases. The first value is displayed after 10 seconds and then
a new reading is displayed each second as long as the
Read key is kept pressed. When a new value
is displayed, the measurement value will briefly blink.
The last value remains on the display after the
Read key is released.
AVERAGED MEASUREMENT
This measurement mode is useful when samples that cause unstable readings are analyzed. By
averaging several readings, noise effect is reduced and accurate measurements can be taken.
This mode can also be selected when high accuracy measurements are needed. In the average mode
10 measurements are averaged in a short period of time (about 20 seconds).
To use the averaged reading mode first enter setup and enable the Average reading mode. The “
AVG”
text will be displayed in the left side of the screen.
HI 88703 automatically selects the correct turbidity
range to display the results with the highest
accuracy. If the measured value is higher than 4000
NTU (980 EBC or 26800 Nephelos), the display
will show the maximum value blinking and the
message “
Out of range” on the message line.
UNITS CHANGE
To change the units, simply press the Unit key when a measurement is available. The Nephelos
value is obtained by multiply with 6.7 the NTU value. The EBC value is obtained by multiply with
0.245 the NTU value.