17
More information
• See page 18
for information on the
HOLD function, READY
indicator, and
auto endpoint function.
Taking Conductivity or TDS Measurements
To take readings:
1.
Rinse the probe with deionized or distilled water before
use to remove any impurities adhering to the probe body.
Shake or air dry. To avoid contamination or dilution of your
sample, rinse probe with a small volume of your sample
liquid.
2.
Press ON to switch on meter.
3.
Press the MODE key to select conductivity (TDS)
measurement mode. The MEAS annunciator appears
on the top center of the LCD.
• Conductivity readings: display shows µS or mS
• TDS readings: display shows ppm or ppt
The ATC indicator appears in the lower right hand corner
to indicate Automatic Temperature Compensation.
See Figure 21
NOTE: For conductivity or TDS manual temperature
compensation, you must deactivate the temperature
sensor built into the conductivity/TDS probe and set a man-
ual temperature compensation value. The ATC indicator will
disappear from the display. See pages 20-21 for directions.
4.
Dip the probe into the sample.
When dipping the probe into the sample, the tip of the probe
must be immersed above the second steel band. Stir the
probe gently in the sample to create a homogenous sample.
See Figure 22
5.
Allow time for the reading to stabilize. Note the reading on
the display. If the Ready indicator is selected on, it will
appear when the reading is stable. See page 18 for more
information.
6.
Press the MODE key to toggle between pH, mV, TDS and
conductivity readings.
Notes
You can use the conductivity manual ranging function to
select a specific range in which your readings will appear.
See page 19 for directions.
Immerse
probe beyond
upper steel
band
ATC
READY
MEAS
C
µ
S
Figure 21
Figure 22
troubleshooting
electrode
care
measurement
calibration
starting up
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