Section 8. Maintenance
8-19
When Flow In Zero and Flow Out Zero stabilize,
click Zero for Flow In Zero then again on the con-
firmation prompt to reset the zero. Click Apply on
the second confirmation prompt to finish. Repeat for
Flow Out Zero. If Flow In Zero stabilizes at ±1 or
Flow Out Zero at ±5, the zero does not require reset-
ting.
Fluorescence detector
The fluorescence detector can be reset to remove any off-
sets in the detector electronics. Take the following steps
to reset the fluorescence detector.
1 Open Instrument Calibration.
Connect the LI-600 to a computer via USB then open
the computer software. Click the drop-down menu
on the Toolbar then select Instrument Calibration.
2 Check the fluorometer response.
Select FLR Zero then click Begin FLR Zero Cal-
ibration to view FLR Zero. Click Zero then ensure
that the Flr Response with an empty cuvette is
approximately ±5 units.
3 Zero the fluorescence detector.
If Flr response is not approximately ±5 units, click
Zero to reset the zero for the fluorescence detector.
Changing the RH sensors serial
number
The RH sensors board can be user replaced. However,
the RH sensors serial number does not automatically
update and must be updated in the computer software
to obtain the correct calibration information. If a new
RH sensors board is installed without updating the
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