Thermo Fisher Scientific CyberScan DO 110 - Manual (Page 17)

Instruction Manual CyberScan DO 110
12
5 MEASUREMENT
During measurement, care must be taken not to allow the membrane of the DO
probe touch any surface. The probe can either be fully or partially immersed in the
solution.
The READY indicator appears on the display when the readings stabilize. It will turn
off if the readings start to fluctuate.
NOTE: It is important that the sample is stirred constantly to allow it to flow past the
membrane for better readings.
5.1 Automatic Temperature Compensation
The ATC indicator on the LCD indicates automatic
temperature compensation (ATC).
5.2 Manual Temperature Compensation (MTC)
For manual temperature compensation (MTC), you must set
the ATC mode in the SETUP menu Program P 1.3 to “NO”.
See section 8.2.3.
The [ATC] annunciator will disappear from
the LCD indicating manual temperature compensation mode.
1. Press the CAL/MEAS key to enter DO calibration
mode.
2. While in DO calibration mode, press the MODE key to
enter temperature calibration mode. The primary
display act as the adjustable temperature setting and
the secondary display shows the default temperature
value of 25°C or indicates the last set temperature
setting.
3. Check the temperature of your sample using an
accurate thermometer.
4. Press the MI/▲ or MR/▼ keys to set the temperature
to the measured value from step 3.
5. Press HOLD/ENTER key to confirm the selected temperature and to return to
the measurement mode.
6. The meter will now compensate DO readings for the manually set
temperature.
NOTES:
To exit this program without confirming the manual temperature
compensation value, DO NOT press ENTER in step 5. Press CAL/MEAS
instead.
Figure 5: ATC indicator
MEAS
°C 30.0
CAL
°C
25.0
25.0
°C
30.0
25.0
CAL
READY
MI MR
ENTER
HOLD
% 98.9
MEAS
%
ATC
°C
98.9
24.5