Thermo Fisher Scientific Alpha pH 1000 - Manual (Page 20)

15
7.2.2 Temperature calibration (ATC mode only)
1) Select “ATC on” as described above in Section 7.2.1.
2) Press ENTER key. The upper display indicates current
temperature offset. The current measured temperature is
shown in the lower display.
3) Compare the current measured temperature on the controller
display to a thermometer known to be accurate. Note down
the correct temperature value.
4) Press ▲ and ▼ keys to scroll the lower display to match the
correct value. Upper display will now show the offset value.
You can offset temperature up to
± 5 °C.
5) Press ENTER key to confirm your selection.
6) Continue with additional Advanced Set-up procedures, or
return to the Measurement mode by pressing
▲ and ▼ keys
(escape) simultaneously.
7.2.3 Setting manual temperature compensation
Note: This option is not available when the controller is set for
ATC operation.
For manual temperature compensation, two different
temperatures: process and calibration, can be input
independently. This allows calibration at a temperature other than
the process temperature. Example: setting a calibration
temperature of 25
o
C allows calibration using standard buffer
solutions at 25
o
C, even if the process temperature is different.
1) Select “ATC oFF” as described above in section 7.2.1
2) Press ENTER key. Upper display shows current process
temperature and lower display shows “P.°C” to indicate
process temperature.
3) Press ▲ and ▼ keys to adjust the process temperature
value, between -9.9 and 125°C.
4) After setting the process temperature value, press ENTER
key. Upper display shows current calibration temperature and
lower display shows “C.°C”.
5) Press ▲ and ▼ keys to adjust the calibration temperature value, between -9.9 and 125°C.
6) Press ENTER key to confirm.
7) Continue with additional Advanced Set-up procedures, or return to Measurement mode by
pressing
▲ and ▼ (escape) simultaneously.
0.0
SETUP
HOLD
25.0 °C
ATC
SETUP
HOLD
SETUP
HOLD
25.0
SETUP
HOLD
25.0
SETUP
HOLD