Levelogger User Guide - Software Version 3.4.0 or Higher
Page 28
6 LTC Levelogger Junior Calibration
The LTC Levelogger Junior conductivity sensor must be calibrated for
reliable conductivity measurements. Calibrate the LTC Levelogger Junior for
conductivity at the start of each new monitoring project or at a minimum each
new monitoring season. Calibrating the LTC Levelogger Junior again directly
after the monitoring project or season will provide information on the degree of
conductivity deviation during the project or season. If necessary, readings can be
corrected for any conductivity deviation in a spreadsheet program after the data
has been exported.
The process of conductivity calibration is performed automatically by use of
the Calibration Wizard. The user need only place the LTC Levelogger Junior
in a specified calibration solution and follow the steps provided by the wizard.
Conductivity calibration solutions are available from Solinst or any laboratory
supply outlet. This LTC Levelogger Junior has an 80,000 µS/cm conductivity
range and a calibrated range from 500 to 50,000 µS/cm. It can be calibrated
at up to 3 calibration standard points:
• 1,413 µS/cm
• 5,000 µS/cm
• 12,880 µS/cm
The solution(s) must be between 10˚C and 30˚C during actual calibration.
Temperature should remain stable during the 10 - 20 seconds it takes to perform
each calibration.
Figure 6-1
LTC Levelogger Junior
Note:
For best
calibration
results, set the
'Temp. Coefficient' field to
'Conductivity'
rather than
'Spec. Cond.' when setting
up the LTC Levelogger
Junior (see Section 5.2).