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Turbimeter Plus
Compact Turbimeter
Formazin
Select 'Factor' to enter the data entry screen.
Select Calibration and press 'OK'.
Highlight 'Slope' and press 'OK'.
Choose 'Formazin' and press 'OK'.
Use the Up/Down buttons to enter the slope
calculated externally. The value is limited between
Acceptable fresh Formazin standards should
0.1 and 50.0.
be prepared within the following ranges:
Press 'Done' to return to the 'Factor' screen.
Low Standard
Highlight 'Intercept' and press 'OK' (in many
Second Standard 10.0 - 30.0 NTU
cases the intercept will be zero but for straight
Third Standard
line fitting an offset will sometimes be required).
High Standard
Use the Up/Down buttons to enter the intercept.
Select the lowest (0.01 - 1.00) NTU standard
Select 'Add' to recall data points from memory
and insert into the sample chamber with the
for which a correlated suspended solids value
orientation mark facing forward.
has been measured.
Use the Up/Down buttons to adjust the value on
To edit factors highlight the slope or intercept
screen to that on the standard and press 'Read'.
and press 'OK'.
Repeat the process for the second, third and
Use Up/Down buttons to adjust the value.
high standards.
Press 'Back' to return to 'Calibration' menu.
After the final standard, the screen will show
'Calculating... Please wait' and a countdown
Restore Factory Calibration
will appear to show time remaining.
To restore the default calibration,
On completion of the process the Turbimeter
select this option and press 'OK'.
Plus screen will show 'Successful'.
Choose to continue - 'Yes'/'No'.
Press 'Back' to leave the calibration process
The screen will show 'Successful'.
and return to the Calibration menu.
To cease calibration during the data capture
Care and Maintenance
phase press 'Cancel'.
The Compact Turbimeter has been tested for
To cease the calibration process at any step,
IP67 compliance so accidental immersion will
press 'Back' (calibration data will be discarded).
not damage the internal components.
The time, date and Operator ID are stored in the
Sample cuvette should be clean and dry prior to
calibration log for GLP compliance (see Page 9,
insertion into the sample holder. Lint free cloths
System menu).
are provided for this purpose.
Silicon oil is also present to use on scratched
Total Suspended Solids -
cuvette surfaces. Its use should not be necessary
Use Results from Log
unless turbidity readings are consistently higher
Select 'Calibration' and press 'OK'.
than expected. If required, place two or three
Select 'Total Suspended Solids' and press 'OK'.
drops onto the vial and smear across the glass
If the Sample ID has already been created use
using the lint free cloth.
the Up/Down arrows to highlight and press
Indexing cells to find the optimal position for
'OK' to select.
turbidity measurement is recommended, especially
If a new Sample ID is required, move the
if measuring low values. The Continuous-Capture
highlight to a blank area and press 'New'.
reading mode (see Section 4.5) contains more
Create the new Sample ID using the Up/Down
details on the suggested method.
buttons to select characters as describe in the
User calibration is advised on a need only basis,
'System' section.
using the supplied SDVB standards. Calibration
Select 'Correlation' to enter the data entry screen.
frequency is at the user's discretion and can be
The default (0, 0) point is always included.
deduced by reading the standards to determine
This can be deleted or edited if not required.
any offset that may have occurred due to fouling.
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0.01 - 1.00 NTU
90.0 - 110.0 NTU
720.0 - 880.0 NTU
Select 'Add' to recall data points from memory
Subjecting the standards to prolonged exposure
for which a correlated Total Suspended Solids
to freezing temperatures will destroy the SDVB
value has been measured.
standards, seen by physical settling and a
lowering of the NTU value. The use of a WP48
Press 'Select' to enter the concentration of
Heat Pad is recommended in these circumstances
suspended solids determined externally using
to prevent standard degradation.
the Up/Down buttons.
Standards have a 12 month stability and should
When data entry is complete press 'Done' and
be replaced after this date.
the slope/intercept will be calculated and shown
automatically.
Replacement calibration sets are available, part
Data points can be edited or deleted as required.
number PTC 090, from your supplier or direct
Highlight the data point of interest and select 'Edit'.
from Palintest Ltd.
Choose either 'Edit' or 'Delete' as required.
No prescribed maintenance intervals are possible
When complete select 'Done'.
due to the high dependence on frequency of use,
Press 'Back' to return to the 'Mode' menu.
types of samples and conditions and user protocol.
Service and maintenance is available via authorised
Total Suspended Solids -
service centres or direct from Palintest Ltd.
Use Slope and Intercept
Select 'Calibration' and press 'OK'.
Troubleshooting
Select 'Total Suspended Solids' and press 'OK'.
The Compact Turbimeter has internal diagnostics
If the Sample ID has already been created,
to advise on some issues as follows:
use the Up/Down arrows to highlight and
press 'OK' to select.
Error 100 - Measurement Off-Scale
If a new Sample ID is required, move the
The reading is above 1050NTU. Dilute using the
highlight to a blank area and press 'New'.
provided PT 512 Dilution Tube and clean water
Create the new Sample ID using the Up/Down
and re-measure.
buttons to select characters as describe in the
Error 101 - Incorrect Standard
System section.
The standard inserted is either the incorrect value
Select 'Factor' to enter the data entry screen.
or is no longer within an acceptable tolerance for
Highlight 'Slope' and press 'OK'.
calibration. Use the correct standard or replace
Use the Up/Down buttons to enter the slope
the expired calibration set.
calculated externally. The value is limited
Error 107 - Blanking Error
between 0.1 and 50.0.
The sample cuvette cap is not attached allowing
Press 'Done' to return to the 'Factor' screen.
ambient light into the QuadoptiX™ chamber or the
Highlight 'Intercept' and press 'OK' (in many cases
sample cuvette is not fully inserted. Replace the cap
the intercept will be zero but for straight line
and read again or fully insert the sample cuvette.
fitting an offset will sometimes be required).
Error 110 - Battery Low
Use the Up/Down buttons to enter the intercept.
The available power is insufficient to support
Select 'Add' to recall data points from memory
reliable analysis. Replace the batteries.
or which a correlated suspended solids value
has been measured.
Error 111 - Battery Critical
To edit factors highlight the slope or intercept
Battery level is critically low and the instrument
and press 'OK'.
will automatically shut down immediately to
ensure all data is written to the memory correctly.
Use Up/Down buttons to adjust the value.
Press 'Back' to return to 'Calibration' menu.
Other more general issues that arise may be as follows:
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