General Calibration Information; Conductivity - Seametrics CT2X Instructions For Use Manual

SETTINGS AND CALIBRATION

General Calibration Information

Settings and calibration values can only be changed when
there is no data on the sensor. Be sure to retrieve any data
and then erase the data on the sensor before proceeding.
Important!
When performing calibration, be sure that you
use the same units for all measurements that
you have selected to view in the program, such
as µS/cm, mS/cm, psi, feet of water, etc.
Conductivity Calibration
To perform a Conductivity Calibration first connect to your
CT2X and ensure all data has been uploaded and erased
from the sensor.
Prepare your calibration standard(s) and place the sensor
in your first point calibration standard, allow a few
minutes for the temperatures to equalize. Check for stable
temperature readings under Real-time Data and note the
current temperature value. Next select the calibration
button
To calibrate Conductivity select Depth/Submergence,
confirm your measurement units, then click Continue.
Seametrics • 253.872.0284
The calibration screen will default to the conductivity
channel, you may also switch to the Pressure channel if
you need to perform a pressure calibration setup.
Make sure the Non-linear box is NOT checked during
calibration. If you plan to record data after calibration
using the Non-linear temperature compensation option
come back after calibration is complete and select the
Non-linear box.
Select one or two point calibration from the Calibration
Type drop down box. Seametrics recommends performing
a two point calibration that brackets your expected
conductivity range in the field for best accuracy.
Enter the RAW conductivity value of your standard at the
temperature noted above (consult conductivity standards
temperature reference chart) and enter it in the Ref. Point
box. Next click Measure.
Note: If your conductivity values appear to drift slightly try
stirring your standard with the sensor. If the standard has
been sitting for a time the solution can begin to settle out
affecting the readings.
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CT2X INSTRUCTIONS
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