Thermo Fisher Scientific CyberScan DO 5000 - Manual (Page 92)

Instruction Manual CyberScan DO5000
89
1. Touch OUR on the main mode screen.
2. Touch setup to set parameters essential for the OUR calculation.
These include dilution ratio, minimum run time, maximum run
time, minimum DO required to end the test.
3. Touch start to initiate the OUR test.
4. Touch stop to terminate the test at any time.
A timer on the OUR screen will display the time of the test. When the
test concludes, the OUR results in mg/L/hr will be displayed. Touch
print to save the data into the data log, or touch OK to return to the
OUR screen.
The calculation employed for the OUR result is:
OUR= [DO
start
(mg/L) – DO
end
(mg/L) / T
duration
(sec)] * (3600sec/hr)
* dilution ratio = mg/L/hr