13
To calibrate conductivity or TDS:
1.
If necessary, press the MODE key to select conductivity or
TDS mode.
See Figure 13
2.
Rinse the probe thoroughly with de-ionized water or
a rinse solution, then rinse with a small amount of
calibration standard.
3.
Dip the probe into the calibration standard. Immerse the
probe tip beyond the upper steel band. Stir the probe
gently to create a homogeneous sample.
See Figure 14
4.
Wait for the measured conductivity value to stabilize. If
the READY indicator has been activated (Set up program
P7.1—see page 33), the READY annunciator lights when
the reading is stable.
5
. Press CAL/MEAS to enter conductivity (TDS) calibration
mode. The CAL indicator will appear in the upper right
corner of the display.
See Figure 15
6
. Press the
▲
or
▼
keys to change the value on the
primary display to match the value of the calibration
standard. The lower display will show the factory cali-
brated value.
See Figure 16
7.
Press ENTER to confirm the calibration value. The meter
returns to the MEAS (measurement) mode.
8.
Repeat steps 1-7 for other ranges.
Notes
To exit from Conductivity (TDS) Calibration mode without
confirming calibration, DO NOT press ENTER in step 7. Press
CAL/MEAS instead. This will retain the meter’s old calibration
data in the measuring range of the calibration.
When entering calibration mode, the meter will display the
factory default value. If the meter was previously calibrated,
the display may “jump” to the factory default value when
switching from measurement to calibration mode.
You can offset the conductivity or TDS reading up to ±20%
from the default setting. If your measured value differs by
more than ±40%, clean or replace probe as needed.
See page 43 for a wide selection of high-quality calibration
standards.
Immerse
probe beyond
upper steel
band
ATC
READY
MEAS
C
µ
S
Figure 13
READY
CAL
µ
S
Figure 16
CAL
ATC
READY
C
µ
S
Figure 15
Figure 14
troubleshooting
electrode
care
measurement
calibration
starting up
setup
mode
return of
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warranty
accessories
specifications
appendixes
