testo 252 Bedienungsanleitung Seite 127

Description of probes
Conductivity calibration with a standard solution
Change the decade of the conductivity value with
the arrow key and confirm the setting with Enter.
Use the arrow keys to change the individual
figures and Enter enables you to jump to the next
figure in the value displayed.
Once the last figure has been confirmed, the cell
constant is recalculated and displayed.
Store this newly-calculated cell constant in the
hand instrument with the Enter key.
You are now in the measuring mode. The
measuring instrument is now operational. The
conductance in relation to the reference
temperature (25 ° C) and the actual (measured)
temperature of the measuring solution are
displayed. Correct the temperature coefficients if
required. For example at 20°C the Testo
conductivity standard solution has a temperature
coefficient of 1.91%/°C. (cf. p. 69)
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