Conductivity Calibration - Thermo Scientific Orion Star series Bedienungsanleitung

Conductivity Technique

Conductivity Calibration

Note: For an automatic calibration, the nominal cell constant of the conductivity
probe must be entered in the setup menu before the calibration is performed.
1 . In the measurement mode, press
line, press
begin the calibration .
2 . Rinse the probe with deionized water and place it into the conductivity standard .
3 . To perform a manual calibration – The manual calibration screen will display the
cell constant on the top line, the conductivity value of the calibration standard
on the middle line and
press until the first digit to be changed is flashing, press
change the value of the flashing digit and continue to change the digits until the
displayed conductivity value matches the value of the standard at the measured
temperature . Once the value is set, press
correct location . Press
Note: In the manual calibration screen, start changing the cell constant within
five seconds or the meter will proceed to the automatic/direct calibration. If this
occurs, press and hold
4 . To perform an automatic or direct calibration – Wait for the meter to go from
the manual calibration screen to the automatic/direct calibration screen . The
automatic/direct calibration screen will display the conductivity value of the
calibration standard on the middle line and
a . Automatic calibration – When the µS/cm or mS/cm icon stops flashing, the
meter will display the temperature-corrected conductivity of the standard .
b . Direct calibration – When the µS/cm or mS/cm icon stops flashing, the
meter will display the actual conductivity value read by the probe . To
change the conductivity value, press
is flashing, press
continue to change the digits until the correct conductivity value of the
standard at the measured temperature is displayed . Once the value is set,
press
EN-40
until the µS/cm or mS/cm icon is shown and press
on the bottom line . To change the cell constant,
to save and end the calibration .
to abort the calibration and repeat the calibration.
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until the decimal point is in the correct location .
Thermo Scientific Orion Star
until the arrow icon points to the middle
until the decimal point is in the
until the first digit to be changed
to change the value of the flashing digit and
and Star Plus Series Meter User Guide
™
/
on the bottom line .
to
to