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72
GF 9950-10 Six Channel 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.
Calibration Procedures - pH
EasyCal Procedure - pH
•
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.
30s
Allow for stabilization
30 seconds
2
Place electrode tip in
second pH buffer.
EASYCAL
CH 2 pH ->
CH 1 pH ->
SAVING
EASYCAL
CH 2 pH ->
CH 1 pH ->
1
Place electrode tip in
first pH buffer.
pH 4.0 = 177 mV
pH 7.0 = 0 mV
pH 10 = -177 mV
Limit ± 50 mV
30s
Allow for stabilization
30 seconds
EASYCAL
CH 2 pH ->
CH 1 pH ->
ENTER CODE
_ _ _ _
1.
CH1 pH
EASY 13.10 mV
7.00
PLACE SENSOR
IN BUFFER 1
START <ENTER>
ENTER
2.
CH1 pH
EASY 184.33 mV
4.00
PLACE SENSOR
IN BUFFER 2
START <ENTER>
ENTER
4.
ENTER
3.
EASYCAL is complete
ENTER
+
Display returns to
VIEW Mode
-0.99
15.00
-0.99
15.00
CH1
7.0
77.0
4.0
99.0
CH2
pH
°F
pH
°F
From any VIEW screen, press
+
then press
.
(Press again to access CH1 if necessary)