User Guide

17
ON
OFF
19.99
mS
9 VOLT BATTERY
mS
• Switch the instrument on by pressing ON/OFF.
• Select 19.99mS/cm range by pressing the
appropriate range key.
• Adjust the calibration trimmer in the battery compartment with a
screwdriver until the display shows "12.88 mS" i.e. the conductiv-
ity reading @ 25°C.
• All subsequent measurements will be compensated to 25°C (77°F).
If you prefer to standardize the temperature compensation to
20°C (68°F) rather than 25°C (77°F), adjust the trimmer to read
"11.67 mS" (see the conductivity vs. temperature chart on page
18). All subsequent measurements will be compensated to 20°C.
• The calibration is now complete and the instrument is ready for
use.
The instrument should be re-calibrated once a month, or when the
probe or battery is changed.
Note: For more accurate results, it is advisable to use a calibration
solution close to the range to be measured. See the accessories
section on page 23 for a wide selection of conductivity solu-
tions.