Thermo Scientific Orion 320, 350 and 370 PerpHecT
®
LogR
®
Meter User Guide
4-1
Chapter 4
Operating the 350 Meter
Plug the meter into an approved wall outlet via the power line adaptor . The
entire display (all icons) will be lit for about two seconds . Once all power
up procedures have been completed, the meter automatically advances to the
measurement mode .
Note:
The first time the meter is powered up, a meter self-test and check
out should be performed before using the meter for measurements . Refer to
Chapter .7, .Meter .Self .Test
for instructions .
Select the setup menu by pressing the setup key until the setup icon on
the display is activated . This menu is used to define, change or view meter
operating parameters . While in the setup menu, the yes key is used to scroll
through the menu without changing parameters and to enter new parameters
into meter memory . If a parameter has been changed, the yes key must be
pressed to activate the change . The scroll (
▲ ▼
) keys are used to change the
settings within each function . To exit the setup menu, press the mode key .
Slope .–
The current pH electrode slope in the meter memory will be
displayed . The value is displayed as a percent of theoretical slope . The
default setting is 100% . This function is for display purposes only . The value
cannot be changed in the setup menu . To change the slope value, perform
a two point calibration or set the slope during a one point calibration . Press
the yes key to advance to next menu function .
LogR .–
When the LogR function is accessed, the LogR icon will be shown
while the upper readout displays the current LogR setting (off for disabled
and on for enabled) . Press the yes key to accept the setting . To change
the current setting, press a scroll (
▲ ▼
) key . Press the yes key to accept .
The measured LogR temperature will be used to calculate temperature-
compensated pH values .
Print .Function .–
The current print function setting will be displayed in the
main field and PrT will be displayed in the upper field . The default setting
is manual print, shown as 00 on the display . To change the setting to print
on ready, press the scroll (
▲ ▼
) keys until 01 is displayed . Press the yes key
when the desired setting is displayed .
Meter Power Up
Setup Menu
Setup Parameters
Summary of Contents for Orion 320
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