General Tools and Instruments DPHC2001 User Manual
Page 11
CAL
4.00
*
The texts " CAL " will flash for around 5 seconds.
After that, the meter calibrate itself automatically.
The upper display will show the calibrated value,
the lower display will show the temperature value.
4.00
25.0
6) Rinse the electrode with distilled water again.
7) Repeat above (4) to (5) procedures two times at least.
8) The instrument and electrode are now finished the
" TWO POINTS CALIBRATION " & ready for the
measurement.
4-4 Singal Point Calibration
If PH4 and PH10 buffer solution are not available, single
point (PH7) calibration can be executed from procedures
of 4-3 (1) to (4). However for more accurate measuring
result and linearity, two points calibration is always
recommended.
9
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