PROGRAMMING
4 - 26
4.7.9 Change Bar Code Reader
The UltraRAE monitor allows the user to turn the tube bar code
reader on and off. The default condition is off.
1.
“Change Bar Code Reader?”
2.
Press the
[Y/+]
key, the display shows the reader status:
Bar Code Reader = Off?”
3.
Press the
[Y/+]
key to accept the currently displayed status.
Press
[N/-]
to toggle between “On?” and “Off?” Press
[MODE]
to exit this sub-menu and move to the next
monitor setup sub-menu.
4.
Save any changes with the
[Y/+]
key after the “Save?”
prompt. Use the
[N/-]
key to discard the changes and move
to the next monitor setup sub-menu.
When the barcode reader is “On”, the UltraRAE reads the barcode
when a tube is inserted. The unit automatically identifies the tube
type and applies the calibration and measurement time for the
tube identified. This condition is most convenient for users who
switch frequently between tube types. When the barcode reader is
“On” it may occasionally need adjustment to identify the tubes
properly (see Section 8.1 Paragraph 8 on CCD Reader).
When the barcode reader is “Off”, the user must be sure to
identify the tube type properly before starting measurements.
Thereafter, the monitor will assume the same tube type even if
no tube is in place. It is important to select the tube type
correctly because this determines the lamp required and the
measure wait time.
!! CAUTION !!
If the incorrect tube type is programmed or the Measure Wait
Time is otherwise set too short, it is possible to underestimate
the VOC concentration and thereby cause overexposure.
