56
9900 Transmitter
NOTE:
The solutions can be used for calibrating more than one sensor;
however, the solution must remain free of debris and must not be diluted by
rinse water from previous calibrations.
Theoretical mV values
2 ................... +296
3 ................... +237
4 ................... +177
5 ....................+118
6 ..................... +59
7 ....................... +0
8 ......................–59
9 ....................–118
10 ..................–177
11 ..................–237
12 ..................–296
pH @ 25 °C
mV
EasyCal Procedure - pH
EasyCal is the fastest and simplest periodic calibration method.
Requires prepared 4, 7 or 10 pH buffers (any two).
1
2
30s
ENTER
+
30s
ENTER
Place electrode tip in
first pH buffer.
pH 4.0 = 177 mV
pH 7.0 = 0 mV
pH 10 = -177 mV
Limit ± 50 mV
Allow for stabilization
30 seconds
To exit menus and return to
9,(:SUHVVŸDQGź
buttons at the same time.
Display returns to VIEW
Mode in 10 minutes
To Calibrate:
Response:
to accept
to accept second
buffer calibration
To Accept:
Place electrode tip in
second pH buffer.
Allow for stabilization
30 seconds
• This procedure simpli
fi
es
pH calibration using
standard 4.0, 7.0, 10.0 pH
buffers only. If these pH
buffers are not available,
use MANUAL CAL and
calibrate the system using
the STANDARD and
SLOPE settings.
• Set sensor temperature
in the CAL Mode before
performing EasyCal for new
electrode installations.
Calibration Procedures - pH
