Teledyne 6650 - Fluorescence Probe - Oil in Water analysis system - Manual (Page 24)

Setup & Operation Model 6650
16 Teledyne Analytical Instruments
b) Both the REF and MSR DET LEDs should have solid
green or flashing green output.
c) The value on the display is fluorescence level in the
process. If the sample is the background material, this is
your background fluorescence level.
d) Insert the span filter using the SPN CHK button located
on the upper end of the Fluorometer housing. When the
filter is in place, the FLTR-IN LED will change from
green to red. Refer to Figure 3-1.
e) See page 18 for discussion on span filter.
f) Both the REF and MSR DET LEDs should have solid
green or flashing green output.
g) If the indicator LED color does change color, refer to the
Diagnostics section below.
h) Depress the SPN CHK button to remove the filter from
the beam path. The FLTR-IN indicator will change from
red to green.
i) Wait 2 minutes for the output to stabilize and the unit
should display the background fluorescence level.
j) Both the REF and MSR DET LEDs should have solid
green or flashing green output.
k) The unit is now ready for process monitoring.
3) There is no need to adjust the 4mA and 20 mA levels for process
monitoring, since the presence of analyte will move the
fluorescence level upward from the background level.
4) Instructions for adjusting the 4mA, 20 mA and display levels are
given below.
5.3.3 Case 3: Process monitoring following
application engineering
This case is valid when the user has determined that Mode 2
monitoring is sufficient to meet the monitoring goals in process. This is
the simplest monitoring method since no calibration standard is
required.