20-80% Bar; Set Function; Calibration Adjustment - MACHEREY-NAGEL PF-3 Manual

12.9 20–80% bar
The device can optionally display a 20–80% measurement range bar
to check whether the result is in the middle measurement range. In
this menu, you can enable and disable the 20–80% bar using the
action button
factory preset.

12.10 0 set function

A zero measurement must be performed for all VISOCOLOR
tests. Therefore, when switching between tests, it is necessary
to measure a new zero. If you conduct a series of tests for various
parameters from the same sample, you can use the 0 set function to
store a zero for all VISOCOLOR
must be performed only once.
When the 0 set function is switched on, you can call up a new test
after measuring a zero, insert the measurement cuvette directly, and
perform the measurement using
is stored in the device as a new, overriding zero.
Once you switch off the device, it is necessary to measure a new zero.
This function is not enabled by default. You can switch the 0 set
function on or off in the settings.
Retaining a single zero measurement as the basis for further
tests can be recommended only if measurements for various
parameters are performed from one sample or the samples are very
similar.
If you are not sure whether there is sufficient similarity, we always
recommend measuring a zero for our VISOCOLOR

12.11 Calibration adjustment

The PF-3 has already been factory-calibrated for direct use without
user adjustment. The calibration adjustment can be used to meet legal
requirements. To do this, you can adjust the MACHEREY-NAGEL factory
programming for the VISOCOLOR
"Adjust calibration" menu with the aid of a standard. You can select the
test to be adjusted using
with the zero solution in the photometer, and press the
Insert the cuvette with the standard with a known concentration and
press the action button
set a different number value using the left action button
the right action button
to be edited. The standard adjustment can be performed only within
the measurement range of the respective test. Entering the number
value zero is not permitted. Confirm your entry with the action button
. The measurement range bar is disabled as a
. Confirm with
. To change the value displayed, you can
, you can select the digit or decimal place
Manual Photometer PF-3 EN, 04/2021
tests so that the zero measurement
®
. If you measure a new zero, this
NOTE
and NANOCOLOR
®
tests.
®
tests in the
®
, insert the clean cuvette
ECO
®
button.
. Using
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