11
The instrument should be recalibrated at least once a month, or
when the probe is changed.
Note: For more accurate results, it is advisable to use a calibration
solution close to the measurement range. See the “Accessories”
section for a wide selection of conductivity solutions.
PROCEDURE FOR HI 8733
• Pour sufficient quantity of a conductivity
calibration solution (e.g. HI 7030/
HI 8030) into a beaker to cover the
holes on the probe. If possible, use
plastic beakers to minimize any EMC
interference.
• Immerse the conductivity probe in the
solution, making sure that holes are
completely submerged.
• Wait for a couple of minutes for thermal
equilibrium to be reached.
• Tap the probe on the bottom, then
shake it while rotating to make sure no
air bubbles remain trapped in the
sleeve.
• Switch the instrument on by pressing
On/Off.
• Set the temperature coefficient knob to
2% to compensate for the temperature
effect of average solutions (to determine
exact value for a particular solution,
see page 15).
• Select 19.99 mS/cm range by pressing
the appropriate range key.
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