BWB XP - Sampling Modes; Read Mode Operation

Sampling modes
The instrumentation offers 2 modes for sample analysis. AutoRd will
automatically calculate and log a stable sample concentration. It is
recommended this mode is used for routine sample analysis.
READ mode monitors the flame on a continual basis. As a sample is
adjusted the readings will display the change in sample. This mode
requires the operator to determine and record stable values. It is
recommended this mode is used for process flow / monitoring
applications
1>Read
2 AutoRead
3 Calibrations
4 Setup
Read mode
Aspirate the unknown sample. Select option 1 Read and press accept or
press the read function key.
The read LED illuminates and the display indicates briefly that the
readings for the calibrated ions are being acquired.
The concentration readings for the calibrated ions will be displayed
simultaneously and continue to be updated until the back/STOP key is
pressed. The arrow keys may be used to change the order of the ions
on the screen.
The display indicates the type of calibration for each ion – single point
(.) or multi-point (:) and the units that the calibration was performed in.
Un-calibrated ions are not shown.
When concentration readings are displayed the Stability Indication Lines
to the right of the Ion symbols should be observed.
These stability indication lines indicate signal trend, i.e. whether the
reading is increasing, steady or decreasing, and the degree of noise
present in the signal.
Concentration readings should only be taken when the trend line is flat
(i.e. reading is steady), and noise is at a minimum (i.e. one pixel
shown). If the concentration reading is seen to be falling; check that
the sample has not been fully aspirated.
If no calibrations are present for any of the Ions an error message
“Error, No Ions calibrated” will be displayed, press the Read key to
progress onto viewing the RAW values for each of the Ions.
If the concentration reading for any ion is above the calibrated value,
then the warning message over cal range will be displayed, the over
range LED will flash and an audible alarm will sound.
Check sample concentration and/or recalibrate the instrument.
While concentration readings are displayed the read key may be
pressed to show raw data for both calibrated and un-calibrated ions.
The raw data is a numerical value that represents the magnitude of the
signal detected for each ion. Press read again to return to the ion
concentration display.
Reading increasing.
High noise
DO NOT take reading
Reading decreasing.
High noise
DO NOT take reading
Reading steady.
Low noise
Take reading
34
Please note these displays may not be indicative of the elements on your model.