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4.4.8 Set Date
4.4.12 LCD Contrast
The default setting is appropriate for all but the
Increase/decrease the date by using the
most challenging light conditions but, should it
Up/Down buttons.
become necessary, the contrast setting for the
When correct select 'OK'.
LCD screen can be manually adjusted.
Use the Up/Down buttons to adjust the image
4.4.9 Date Format
on screen until the alternating shapes are clearly
Select DD/MM/YYYYY or MM/DD/YYYY as
visible and press 'Back'.
required. This is particularly important when
downloading data into spreadsheet software.
4.5 Reading Menu
4.4.10 Version
When taking readings ensure the cuvette is free
from dirt, dust and condensation using the supplied
The serial number of the instrument and the
lint free cloths.
software version will be displayed.
Ensure the light cap is in place to prevent stray
The instrument serial number is required for
light from adversely affecting readings. If no light
support and warranty claim.
cap is fitted or the sample cuvette is not correctly
inserted Error 107: Blanking Error will be reported.
4.4.11 Backlight
Microscopic scratches on the sample cuvette
Select either 'Off' or 'On' as required.
will refract light and can lead to higher than
The Turbimeter Plus will maintain the current
expected values.
status until changed.
To prevent scratches having an impact apply a thin
film of silicone oil (provided) to the sample cuvette.
4.4.12 LCD Contrast
Select the 'Reading' menu and choose from:
The default setting is appropriate for all but the
Normal - This mode reads the turbidity of the
most challenging light conditions but, should it
sample in approximately eight seconds with an
become necessary, the contrast setting for the
audible beep at the start and finish of measurement.
LCD screen can be manually adjusted.
Average - Selecting this mode prompts a further
Use the up/down buttons to adjust the image
choice of Short Average (3 readings), Medium
on screen until the alternating shapes are clearly
Average (6 readings) and Long Average (12
visible and press 'Save'.
readings). Averaging readings is extremely useful for
turbidity measurement where particles are in motion
or where extremely high accuracy is required.
4.5 Reading Menu
When taking readings ensure the cuvette is
Continuous-Capture
free from dirt, dust and condensation using the
This mode allows continuous reading of sample
supplied lint-free cloths.
turbidity until measurement is manually interrupted.
Ensure the light cap is in place to prevent stray
This mode will support cuvette indexing and
light from adversely affecting readings. If no
settling studies on rapidly settling samples.
light cap is fitted or the sample cuvette is not
correctly inserted Error 107: Blanking Error will
Total Suspended Solids
be reported.
The relationship between turbidity and suspended
Microscopic scratches on the sample cuvette will
solids can be approximated with correlated data.
refract light and can lead to higher than expected
The QuadoptiX™ bench provides the performance
required to produce reliable data for suspended
values. To prevent scratches having an impact
solids, based on calculated factors (slope and
apply a thin film of silicone oil (provided) to the
offset) for turbidity versus suspended solids.
sample cuvette.
29
Compact Turbimeter
Turbimeter Plus
Default factors are not possible due to the unique
Select the 'Reading' menu and choose from:
variety of size, shape and reflectivity of individual
Normal - This mode reads the turbidity of the
sample matrices.
sample in approximately five seconds with an
Calculated factors will provide a rapid qualitative
audible beep at the start and finish of measurement.
value for Total Suspended Solids that will be relevant
Average - Selecting this mode prompts a further
until process conditions change. This reading
choice of Short (3 readings), Medium (6 readings)
mode will only become active upon a site specific
and Long(12 readings). Averaging readings is
calibration being stored in the Compact Turbimeter.
extremely useful for turbidity measurement where
particles are in motion or where extremely high
4.6 Taking Readings
accuracy is required.
Normal Mode
Continuous-Capture
Choose 'Reading' mode, select 'Normal'
and press 'OK'.
This mode allows continuous reading of
Insert the sample with the orientation
sample turbidity until measurement is manually
mark facing forward and press 'Read'.
interrupted. This mode will support cuvette
A beep will sound at the start and end
indexing andstudies on rapidly settling samples.
of measurement.
Total Suspended Solids
Result is displayed and stored in the results log
with date, time, Operator ID and Sample ID.
The relationship between turbidity and Total
(NOTE: See the 'System' section for details
Suspended Solids can be approximated with
of the result log).
correlated data. The QuadoptiX™ bench provides
the performance required to produce reliable data
Average Mode
for Total Suspended Solids, based on calculated
Choose 'Reading' mode, select 'Average'
factors (slope and offset) for turbidity versus Total
and press 'OK'.
Suspended Solids. Default factors are not possible
Select the number of readings required for the
due to the unique variety of size, shape and
averaging function:
reflectivity of individual sample matrices.
Short Average - 3 consecutive readings
Calculated factors will provide a rapid qualitative
Medium Average - 6 consecutive readings
value for Total Suspended Solids that will be relevant
Long Average - 12 consecutive readings
until process conditions change. This reading mode
Insert the sample with the orientation mark
will only become active upon a site-specific
facing forward and press 'Read'.
calibration being stored in the Turbimeter Plus.
The instrument will beep at the start and end of
measurement cycle. Result is displayed on the
screen and stored in the log with time, date,
4.6 Taking Readings
Operator ID and Sample ID.
Normal Mode
Continuous-Capture Mode
Insert the sample with the orientation mark
Choose 'Reading' mode, select 'Continuous-
facing forward or aligned with an indexed
Capture' and press 'OK'.
optimal position.
Insert the sample with the orientation mark
Choose 'Reading' mode, highlight 'Normal'
facing forward and press 'Read'.
and press Read'.
A beep will occur at the start and end of each
A beep will sound at the start and end of
measurement cycle.
measurement.
To store data in the log, press 'Capture'
Result is displayed and stored in the results log
(repeat as required). To cease measurement,
with date, time, Operator ID and Sample ID.
press 'Back' at any time.
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