TRUBLUE USER’S MANUA
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Water Level, Conductivity, and Barometric Pressure Data Loggers
TE CONNECTIVITY SENSORS
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TRUBLUE USER’S MANUA
L
08/2016
Page 12
11. Conductivity
WHAT IS CONDUCTIVITY
Conductivity, or conductance, is the degree to which a material conducts electric current. In water, high
conductivity often indicates the presence of a high concentration of dissolved salts and minerals.
Conductivity measurements can be valuable for detecting and monitoring saltwater intrusion, surface
water infiltration and mixing, and certain pollutants and contaminants.
TYPES OF CONDUCTIVITY MEASURMENTS
The TruBlue 585 CTD water level data logger can calculate and record the following parameters:
ACTUAL CONDUCTIVITY
UNITS: - microsiemens per centimeter
(μ
S/cm), default
- millisiemens per centimeter (mS/cm)
SPECIFIC CONDUCTIVITY
UNITS: - microsiemens per centimeter
(μ
S/cm), default
- millisiemens per centimeter (mS/cm)
A means of expressing what the actual conductivity of a solution would be at a standard reference
temperature (25°C). Calculated from actual conductivity and temperature. The factory default coefficients
calculate specific conductivity per Standard Methods 2510B.
CALIBRATING THE CONDUCTIVITY SENSOR
STEP 1.
GATHER SUPPLIES. YOU WILL NEED
• Calibration solution set close to your expected conductivity level
• A clean beaker for calibration solution
STEP 2.
RINSE THE SENSOR
A. Dry the body of the unit if is wet, and invert to remove any liquid inside the conductivity sensor
B. Before opening the solution bottle, invert it a few times, then pour into beaker/cup
C. Insert the TruBlue logger
into the solution in the test beaker, making sure the conductivity “slot” is completely
submerged, and gently stir the solution with the datalogger.
D. Remove the TruBlue logger and discard the solution
E. Ideally, repeat steps A-D
… (Cont’d.)
