Thermo Fisher Scientific CyberScan DO 1500 - Manual (Page 39)

Instruction Manual CyberScan DO 1500
36
5.2. %Sat – Two Point calibration (Auto)
User must do the 0.0%Sat cal first. This point will be considered as
offset. After successful 0%Sat calibration, meter will prompt for the
100% Sat calibration. User must do the two points. Otherwise meter
displays the error message. Press enter if meter displays the error
message.
Accepted window for 0% Sat= below 5% Sat.
Accepted window for 100% Sat= 50% - 200%Sat
1. Press
std to enter to ‘Standardize’ screen. Upper display shows
the present measured value, while lower display shows the
0.0%Sat.
2. Dip the DO electrode into 0%Sat solution.
3. Wait for the upper display value to stabilise. Press enter key to
confirm calibration. Meter blinks the cal values for few seconds
and prompts for the 100%Sat calibration.
4. Upper display shows the present %Sat value and lower display
shows the pressure compensated 100%Sat value.
5. Remove the probe from the zero solution and wash it well in
clean water. Remove excess water from the probe using a soft
towel.
6. Hold the DO probe in air.
7. After the upper display reading stabilised, press enter to confirm
the reading. Meter blinks the calibrated value for few seconds
before it exit to measurement mode.
press to accept enter
Standardize
press to accept enter
Standardize
% Sat % Sat