Sper Scientific 850037 Large Display Conductivity Pen - Manual (Page 12)

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To manually select the measurement range:
1. Press SET to turn the pen on.
2. Press ▲ for more than 2 seconds to
select range 1. Press ▲ for more than
2 seconds to select range 2.
CALIBRATION
Selecting the Calibration
Standard Solution
For best results, select a NaCl standard
near the sample value that you are
measuring. Alternatively, use a calibration
solution value that is approximately ⅔ of
the full scale of the measurement range
that you plan to utilize.
Do NOT reuse the calibration solution.
Contaminants in the solution will affect the
calibration and the accuracy. Use fresh
solution each time.
The previous calibration data will be
replaced after re-calibrating. However,