15
CONDUCTIVITY • TRACER
For complete instructions, see the Tracer manual.
Before
fi
rst use, hold the meter by the top battery compartment and swiftly
tap the back of the meter downward into your palm (not a hard surface). This
assures that the internal electrolyte moves to the very tip of the electrode. The
electrolyte should
fi
ll the circular junction window at the tip of the electrode.
Before
fi
rst use or after storage, soak the electrode in tap water or pH buffer
solution for about 10 minutes.
CALIBRATION
Meter accuracy veri
fi
cation should be performed on a periodic basis as
needed.
If calibration is required, the meter must be in the conductivity
mode to perform all calibrations for conductivity, TDS and salinity
. The
meter can perform calibrations and store the data for each of the three ranges–
low, medium and high. The automatic calibration recognition procedure will
recognize conductivity standards of 84
μ
S (Low), 1413
μ
S (Medium) or 12,880
μ
S
(12.88mS) (High). Always calibrate in the range closest to the expected
measurement value.
For salinity samples within the range of 1.00 to 9.99
ppt salinity, calibrate with a 12,880
μ
S calibration standard
.
1. Fill a sample cup to 20 mL line with a conductivity standard.
NOTE: The meter allows for a 1, 2, or 3 point calibration. If calibration is
done for more than one point, the lowest concentration should be done
fi
rst to obtain the best accuracy. Calibrate the ranges from low to high
2. Press the ON/OFF button to turn the TRACER on. Insert the electrode
into the standard. Tap or stir the sample with the Tracer to dislodge air
bubbles.
3. Press and hold the CAL/RECALL button for approximately 2 seconds until
the display begins to
fl
ash.
4. The meter will automatically recognize and calibrate to the conductivity
standard. The display will brie
fl
y indicate “SA” and “End” and then return to
the measurement mode.
NOTE: “SA” will not appear if the calibration fails.
5. The calibration range indicator will appear on the display for each range
that is calibrated during a power on cycle.
H
M
L
Low Range, 84
μ
S/cm
Medium Range, 1413
μ
S/cm
High Range, 12.88 mS/cm (12,880
μ
S/cm)
