Thermo Scientific Alpha pH 560
17
NOTES:
x
To exit calibration mode at any time during calibration, Press
Ÿ
and
ź
keys simultaneously (escape). The pH Controller returns to
the measurement mode and the old calibration values remain active
x
The calibration is always carried out in the units of measurement
(pH or mV), selected in setup mode
The pH Controller is capable of calibration of up to 2 points using
USA or NIST pH buffer standards. All new calibration values will
automatically override existing calibration data. pH buffer values are
referenced to 25 °C. Make sure the measurement mode is set to pH.
(Refer Page 5.7 for switching measurement modes). All pH buffer
values have window of up to 1 pH tolerance during calibration.
Calibration error can be occurred if the measured pH value exceeds this
window. If you wish to abort the pH calibration, Press
Ÿ
and
ź
keys
simultaneously and the pH Controller reverts to pH measurement
mode.
Make sure that the pH Controller is set to accept USA standard buffer
in the Setup mode. (Refer Page 5.6 for Buffer Selection Settings) The
factory default is USA standard. It is recommended that you perform 2-
point calibration at room temperature (25 °C), starting with the first
buffer at pH 7.00 followed by any other buffer value. (pH 4.01, 1.68,
10.01 or 12.45).
Figure 4–15.
USA Buffer Single-Point Calibration
1
1
From pH measurement mode p
press CAL key to enter
calibration mode as described in page 16. The LCD shows
‘C
CAL PH’. P
Press ENT key to begin calibration.
pH Calibration
For USA Standard
Buffer
1-Point Calibration:
www.
GlobalTestSupply
.com
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