biosystems PhD Lite User Manual

50
Note: Calculations that are made on an ongoing
basis (i.e. TWA, STEL, Ceilings, and Peak exposure
values) are updated at regular intervals by the PhD
Lite microprocessor. Adjustments to the
datalogging interval do not effect the way in which
TWA, STEL, Ceiling, and Peak exposure values are
calculated.
To adjust the sampling interval:
1. Enter the Datalogger Menu as described above in
section 5.4.
INTERVAL
CLEAR_DL
SESSIONS COMMN
ID_INFO EXIT
2. Use the navigation arrows to highlight INTERVAL
and press the MODE button.
SAMPLING INTERVAL
48:41
On 01:00
EXIT
3. Use the right and left navigation arrows to highlight
the time interval. The interval is given in terms of
minutes and seconds.
SAMPLING INTERVAL
48:41
On 01:00
EXIT
As discussed above, there is a finite amount of memory
storage in the PhD Lite. As the sampling interval is
either lengthened or shortened, so is the time-estimated
figure, which is given in hours and minutes and appears
above the word EXIT on the right side of the screen.
This figure represents the length of time before the
oldest data will be overwritten.
4. With the interval highlighted, use the up and down
navigation arrows to adjust the interval
SAMPLING INTERVAL
48:41
On 01:00
EXIT
↑
SAMPLING INTERVAL
97:22
On 02:00
EXIT
5. Once the sampling interval is adjusted, use the
navigation arrows to highlight exit and press the
MODE button. The following two screens will be
shown in succession.
Longest Session
Estimate 97h22m
Save Changes?
YES NO CANCEL
6. Press the MODE button with YES highlighted to
save the changes.
Sampling interval
Saved
5.4.1.1 Enable/disable datalogger
To enable or disable the datalogger:
1. Enter the Datalogger Menu as described above in
section 5.4.
INTERVAL
CLEAR_DL
SESSIONS COMMN
ID_INFO EXIT
2. Use the navigation arrows to highlight INTERVAL
and press the MODE button. With On or Off
highlighted, the up and down navigational arrows
are used to toggle between ON and OFF.
SAMPLING INTERVAL
48:41
On 01:00
EXIT
↑↓
SAMPLING INTERVAL
Off
EXIT
3. Once the appropriate setting is shown use the
navigation arrows to highlight exit and press the
MODE button to enter the new interval. The
following screen will be shown.
Save Changes?
YES NO CANCEL
4. Press MODE with YES highlighted to save the new
sampling interval setting.
Sampling interval
Saved
5.4.2 Clearing the datalogger
The datalogger can be cleared of all information through
the CLEAR DL option.
To clear the datalogger, do the following:
1. Enter the Datalogger Menu as described above in
section 5.4.
INTERVAL
CLEAR_DL
SESSIONS COMMN
ID_INFO EXIT
2. Use the navigation arrows to highlight CLEAR DL
and press the MODE button. The following two
screens will then be shown in succession.
Warning Lose
All Sessions Data
Clear Datalogger?
YES NO
3. Press the MODE button with YES highlighted to
clear the datalogger memory.
DATALOGGER CLEAR
COMPLETED

biosystems PhD Lite Specifications

General

Brand	biosystems
Model	PhD Lite
Category	Security Sensors
Language	English