Hach-Lange ORBISPHERE 6110 User Manual - Manual (Page 49)

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Calibration
6.6 Temperature sensor
After selecting this option, the details of the last temperature sensor calibration are displayed.
This shows the values recorded, and information about who performed the last calibration and
when. The due date of the next calibration is also shown (determined by the parameters entered
in
Scheduled operations on page 43 ).
The temperature calibration is made using an accurate internal resistor.
6.7 Carbon dioxide sensor
After selecting this option, the details of the last carbon dioxide sensor calibration are displayed.
This shows the values recorded, and information about who performed the last calibration and
when. The due date of the next calibration is also shown (determined by the parameters entered
in
Scheduled operations on page 43 ).
The CO
2
sensor needs to be calibrated approximately once every 6 months and is calibrated
using pure CO
2
and air. CO
2
is supplied by the purge gas and air is provided by an internal
pump that takes air directly from the atmosphere.
Temperature sensor
New calibration 1. A calibration screen is displayed and the instrument measures two temperature
values and checks the stability of the measurements. Provided the
measurements are stable, you can choose to accept or reject the new values.
Press Validation to store the new setting.
2. On completion a calibration report is created.
Calibration
reports
View the last 10 temperature sensor calibration reports.
Carbon dioxide sensor
New calibration 1. A calibration screen is displayed showing the gas purity data of the main gas. If
the value is incorrect, enter the correct value in the Gas purity box.
2. When the measurement stabilizes press the Validation First Point button. A
new measurement is then initialized and the internal air pump automatically
activated.
3. When the measurement stabilizes press the Validation Second Point button.
4. You now have the opportunity to accept the calibration, store the new values, and
write the details to the calibration report file. If the calibration cannot be
performed, an error message will be displayed giving the reason.
Verification 1. The process is similar to a new calibration, but once verification is complete press
the Ok button to complete the process. No report is produced.
Calibration
reports
View the last 10 flow sensor calibration reports.