Thermo Scientific Orion 320, User Manual

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3-8 Thermo Scientific Orion 320, 350 and 370 PerpHecT
®
LogR
®
Meter User Guide
1 . Press the mode key to select the mV mode . Disable the LogR function
in the setup menu .
2 . Connect the ORP electrode to the meter .
3 . Place the electrode in a sample . When the reading stabilizes, record the
mV and temperature values .
For automatic temperature compensation, connect an ATC probe to the
meter and disable the LogR function in the setup menu . Attach the ATC
probe to the 3 .5 mm phone jack on the rear panel of the meter . See
Figure .4 . The 320, 350 and 370 PerpHecT meters can be used with the
PerpHecT epoxy body ATC probe, Cat . No . 927005; the PerpHecT glass
body ATC probe, Cat . No . 927006; and the PerpHecT stainless steel body
ATC probe, Cat . No . 927007 .
For manual temperature compensation, disconnect the ATC probe and
disable the LogR function in the setup menu . Manual temperature may
only be set when the LogR function is disabled and there is no ATC probe
connected to the meter . In the measurement mode, use the scroll (
▲ ▼
)
keys to manually set the temperature value . This temperature will be used
to calculate temperature-corrected pH values .
mV / ORP
Measurements
Automatic Temperature
Compensation
Manual Temperature
Compensation