Redox/Orp Calibration - Seametrics TempHion Instructions Manual

SETTINGS AND CALIBRATION
Aqua4Plus will take 10 readings and display the average.
Watch for stability while Aqua4Plus is measuring to ensure
an accurate calibration. To accept the second point reading
click Ok. Your new offset and slope values will appear
to the right, click Apply to confirm your new slope and
offset values. Aqua4Plus will provide a real time reading
to verify calibration was successful. You may now close the
calibration window and proceed with deployment.

Redox/ORP Calibration

Note on units: The display unit "Eh" refers to readings
in millivolts referenced to a hydrogen electrode. In other
words, Eh represents millivolt readings that would have
been obtained if using a hydrogen electrode and will
apply the needed offset to the readings after calibration.
The units "mV" are raw millivolt readings from the sensor
and will not apply any calibration offsets. From the
program settings, set the display units to either mV or
Eh, whichever you will be using.
DO NOT USE ZOBELL SOLUTION!
Zobell solution and other Redox standards may foul the
TempHion's electrodes. For Redox/ORP calibration a
secondary meter should be used to obtain the reference
point value. Use a Redox/ORP meter that is calibrated to
your desired Redox/ORP scale to obtain this value.
Place both the TempHion and the reference meter into
your sample (ideally the waters the TempHion will be
installed in). Once readings have stabilized note the value
on the reference meter. Open the calibration window and
select the ORP tab, then enter reference meter reading in
the Ref. Point box. Next click Measure.
Seametrics • 253.872.0284
Aqua4Plus will take 10 readings and display the average.
Watch for stability while Aqua4Plus is measuring to ensure
an accurate calibration. To accept the reading click Ok, your
new offset value will appear to the right. Click Apply to
confirm your new offset value and Aqua4Plus will provide
a real time reading to verify calibration was successful. You
may now close the calibration window and proceed with
deployment.
Page 13
TEMPHION INSTRUCTIONS
seametrics.com