6-2 TDS ( PPM ) measurement
The measuring procedures are same as above
5-1 Conductivity ( uS, mS ) measurement,
except to change the display unit from uS, mS to PPM.
The procedures are :
* Press the " Function Button " ( 3-6, Fig. 1 ) > 2
seconds continuously until the Display show the text "
tdS ", then release the " Function Button " will enter the
the TDS measurement function.
* Under the TDS measurement, press the " Function
Button " ( 3-6, Fig. 1 ) > 2 seconds continuously until
the Display show the text " Cd ", then release the
" Function Button " will enter the Conductivity
measurement function again.
6-3 Calibration
1)Prepare the standard conductivity solution ( optional )
For example :
2 mS range calibration solution :
1.413 mS Conductivity Standard Solution, CD-14
200 uS range calibration solution :
80 uS Conductivity Standard Solution
20 mS range calibration solution :
12.88 mS Conductivity Standard Solution
or other Conductivity Standard Solution
2)Install the " Probe Plug " ( 5-1, Fig. 3 ) into the
" CD Socket " ( 3-12, Fig. 1 ).
3)Power on the meter, set the mode to the conductivity
measurement ( uS, mS ).
4)Hold the " Probe Handle " ( 5-2, Fig. 3 ) by hand
and let the " Sensing head " ( 5-3, Fig. 3 )
immersed wholly into the measured solution. Shake
the probe to let the probe's internal air bubble drift
out from the sensing head.
Display will show the conductivity mS ( uS ) values.
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