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4.2 TDS (ppm) measurement
Measuring procedures are the same as above
4.1 Conductivity (µS,
mS) measurement
, except for changing the display unit from µS,
mS to ppm. For detailed procedures please refer to page 29, chap-
ter 7.9 CD (µS, mS), TDS (ppm) Setting.
4.3 Calibration
1) Obtain a the standard conductivity solution:
For example :
• 2 mS range calibration solution :
1.413 mS Conductivity Standard Solution
• 200 µS range calibration solution :
80 µS Conductivity Standard Solution
• 20 mS range calibration solution :
12.88 mS Conductivity Standard Solution
or other Conductivity Standard Solution
2) Install the “Probe Plug“ (Page 14 Fig. C-1 ) into the “CD Socket“
(Page 5, Fig. A-14).
3) Power on the meter, and set the mode to conductivity
measurement ( µS, mS ).
4) Hold the probe body (Page 14, Fig. C-2) and completely immerse
“Sensing Head“ ( Page 14, Fig. C-3 ) in the standard solution.
Swirl the probe to let any air bubble escape from the sensing
head. The display will show the conductivity mS ( mS ) values.
5) Press the “REC” button and “HOLD” button at the same time.
The display will show the following screen, as an example. Now
release.
Содержание SensoDirect 150
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