S
S
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ECTION
ECTION
ECTION
ECTION
ECTION
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CREENS
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ETTINGS
4-6 O
PERATING
G
UIDE
, TEOM 1405
T
HERMO
F
ISHER
S
CIENTIFIC
Operating Mode
Operating Mode
Operating Mode
Operating Mode
Operating Mode
The TEOM 1405 Monitor displays its current operating mode in the lower
left-hand corner of TEOM Data screen (Figure 4-2) and most of the other
instrument screens.
The unit’s operating modes (Figure 4-2) are defined as follows:
•
Stabilizing:
This operating mode indicates that the unit has not begun to
compute mass values, because the monitor’s temperatures and flow rates
are stabilizing. The temperatures and flow rates must remain within a very
narrow range of values for 30 minutes before the instrument enters the next
operating mode. The monitor always starts in Stabilizing Mode when it is
turned on or reset.
•
Collecting Data:
This operating mode indicates that the unit has begun to
collect data records, but the monitor has not yet computed its first mass
concentration value.
•
Computing Data:
This operating mode indicates that the unit has computed
the first mass concentration value.
•
Fully operational:
This operating mode indicates that the unit is fully
operational. The monitor normally resides in this mode. All mass values
are being computed by the instrument.
•
Setup Mode:
When the unit is in this operating mode, it continues to draw
a sample flow and maintain operational temperatures but it does not
collect any data. Certain operating parameters such as temperatures and
flow rates can be changed only in this mode, because doing so during data
collection would adversely affect the quality of the data. The instrument
will automatically prompt the user to enter the Setup Mode when changing
a temperature, flow or other adjustable value. After the new value is
entered and saved, it will automatically return to one of the four regular
operating modes above. If several parameters need to be changed, the user
can enter the Setup Mode manually, avoiding the warning prompts when
changing each variable. To manually enter the Setup Mode, select the
Instrument Control
button in the Service screen (page 4-30). In the
Instrument Control screen (page 4-32), press the
Setup
button. When the
unit is in the Setup Mode, the user can change all of the system’s
parameters. To manually leave the Setup Mode and start data collection,
when in the Instrument Control screen, select the
Run
button.
Содержание TEOM 1405
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