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Select the Hotkey to assign (0-9) and use the
up/down arrows to highlight the required
parameter/method from the Choose a Test list.
Press OK and the test will be assigned to the
defined number.
Units
The Photometer 7500 offers the choice of result
expressed in mg/l, ppm, mmol/l, µmol,
g/l and µg/l.
Photometer 7500
Changing the result units will not affect the result log.
Dilution Factor
When samples are above the test range, indicated
by >> on the result screen, a dilution procedure can
be used. Setting Dilution Factor to On will prompt
the Photometer 7500 to automatically request the
dilution factor when carrying out a test.
Change the dilution factor by using the up/down
arrows or manually type the dilution factor. The
instrument will automatically correct the result
for the dilution and display the corrected result
(which will also be stored in the result log).
The maximum dilution factor permitted is 99.
If the calculated result exceeds the available number
of permitted characters >> will be displayed
NOTE: do not use sample dilution when
measuring pH or alkalinity.
System Lock
To prevent unauthorised or inadvertent changes
to the System settings or log deletion a four digit
code can be used to lock several options.
The default code is set to 6812. To change the
System Lock code follow the on-screen prompts
to choose a memorable four digit number.
When the System Lock is applied, the items accessible
within the System Mode are limited until the unlock code
is entered. Access is limited to viewing the result log,
adjusting the backlight.
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