Measurements - MACHEREY-NAGEL PF-12 Plus Handbuch

11.2.14 PROG. UPDATE (Method 955)
In order to perform a program update, you must first download the update software
and the new program file (www.mn‑net.com) on your computer. Before you start the
update procedure the photometer has to be connected to your computer via the USB-interface.
The photometer is be recognized automatically. If not, activate the update-mode manually.
Therefore, confirm the program update with
restarts automatically .
Your data may be lost during a program update. Save your measurement data and
your special methods if necessary.
11.2.15 Calibration adjustment (Method 962)
Plus
The PF-12
can be readily used without any need for user calibration. The calibration adjustment
tool can be used to meet regulatory requirements. Therefore, the
factory-provided calibration of the VISOCOLOR
be adjusted with a standard in the menu "calibration adjustment". The parameter including
submethod to be adjusted is chosen via the four-digit entry mask (e.g. 0291 for COD 1500
100–1500 mg/L). Place the tube with the zero value or the reagent blank into the cuvette slot
Plus
of the PF-12 and press
the standard into the device and press
for the standard with the keypad and confirm your entry with
be within the measurement range of the respective submethod, otherwise the entry will not be
adopted). The changed calibration will be stored automatically and will be executed the next
time the concerned method will be chosen. The changed calibration will be indicated in form
of an asterisk behind the respective test name. When stored, the results measured with an
adjusted calibration will be indicated with an asterisk, too. The calibration adjustment can be
deleted and set back to factory calibration by pressing
values in the memory will not be affected by the reset.
Wrong results possible by calibration adjustment: We recommend to use the factory-pro-
vided calibration and not to change this one. The calibration adjustment can be used to
meet legal requirements. When performing the adjustment, we recommend selecting a
standard that is in the upper third of the measurement range of the test to be adjusted to
minimize calibration errors.

12. Measurements

Only the associated power supply unit GTM46101-1005-USB (REF 919220) may be used.
Manual Photometer PF-12
52
device is provided with the MACHEREY-NAGEL factory calibration and
to start the zero measurement. Subsequently place the tube with
Plus
. After a successful update the photometer
NOTICE
ECO and NANOCOLOR
®
to start the measurement. Enter the desired value
in the same menu. The measurement
NOTICE
NOTICE
EN, V2.00, 08.2021
methods can
®
(Note: The entered value must