Thermo Fisher Scientific CyberScan DO 110 - Manual (Page 16)

Instruction Manual CyberScan DO 110
11
4.4 DO Calibration in mg/L (ppm) Mode
The amount of oxygen dissolved in a liquid will depend on its
temperature, pressure and salinity. It is therefore very important
to set these parameters correctly before attempting to do a
calibration.
Temperature is measured by the meter automatically. Pressure
and salinity values are keyed in manually as described in
Sections 8.8.1 and 8.8.2.
1. From the measurement mode, press MODE key to select
mg/L (ppm).
2. Rinse the probe well with deionised rinse water. For best
accuracy, blot the end of the probe dry. Do not touch the
membrane.
3. Dip the probe into a solution whose DO value is known.
4. Wait until the reading stabilizes. Press CAL key.
5. Adjust to the required value by pressing MI/S or MR/T
key.
6. Press ENTER to confirm the calibration.
NOTE: To exit from DO Calibration mode without confirming
calibration, press CAL/MEAS key.
MEAS
ATC
°C
ATC
°C
mg/l
mg/l
8.10
8.10
24.5
CAL
8.10
READY
ATC
°C
mg/l
mg/l
8.24
8.24
CAL
8.10
READY
READY
24.5
MEAS
READY
ATC
°C
MEAS
CAL
ENTER
HOLD
MI MR