Thermo Fisher Scientific EcoScan CON 6 & TDS 6 - Manual (Page 22)

Instruction Manual CON 6/TDS 6
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4.5 Manual Calibration (Conductivity or TDS)
In Manual Calibration mode, you can use customized conductivity calibration
standards (specific to your own application) and calibrate the meter. The
following example shows calibration sequence to 12.00 mS conductivity
calibration standard.
Procedure is similar for CON 6 and TDS 6 meters.
1)
If necessary, press MODE key to select conductivity
mode.
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 (see
Figure in Section 3.4). Stir the probe gently to
create a homogeneous sample. Allow time for the
reading to stabilize.
4) Press CAL key to enter conductivity calibration
mode. The [CA] indicator will appear for 1.5
seconds, and a value will appear flashing.
NOTE: To exit calibration without confirmation, press
CAL key again to go back to measurement
mode.
5) Wait for the value to stabilize and press ▲ or ▼ key
and adjust the value to the calibration standard
used.
6) Press the ENTER key. The [CO] indicator will appear for 1.5 seconds,
and the calibration is successfully performed. The meter returns to
measurement mode.
7) To perform the next point calibration in the multi-point calibration for next
range, repeat step 1-6 again until all points have been calibrated if
necessary.
mS
mS
mS
mS
CAL
HOLD
ENTER
Measurement Mode