3-6
Model 3090/3090AK Engine Exhaust Particle Sizer
TM
Spectrometer
Title
Enter a descriptive title for the sample. This title will appear as a heading on
various windows to identify this sample. The maximum number of
characters allowed is 79.
Scheduling
Run Length (hh:mm).
Enter a run length by selecting the number of hours and minutes you want
to collect data for this run. The maximum run length is 1 hour and 30
minutes. Remember, to stop the run at any time, use the
button on the
toolbar or
Run|Stop Data Collection
.
Start at Time
If you do not want the run to start immediately, you can schedule the run to
start at a specific time.
Run Only Once or Run Continuous
Sampling can be set to run once or to run continuously (specifying a delay
time between runs of 1 minute to 24 hours). When sampling is set up to run
continuous, a new filename is opened for each run. The new filename is
based on the current filename. For example, if the original filename is
ModelCar.3090d, the new filename will be ModelCar_0.3090d the first time
the sample is repeated and ModelCar_1.3090d the second time it is
repeated and so on.
Enable External Trigger
The checkbox for Enable External Trigger, lets you tell the software that you
want to start sampling using an external trigger to start a run remotely. This
can be useful when different instruments need to be started at the same
time.
A trigger input (on the back of the instrument) consists of bringing the +
input to a logic low. This can be done using:
A potential-free contact closure (a toggle switch) that connects the +
input to the
– input, which is at ground (GND).
A logic circuit to drive the + input low.
Data Collection and Display
Data Type
Select the type of data you would like to collect from the instrument. Select
either Concentration data or Electrometer Current.
Zero-Check (Electronic Air Filter Mode)
Check this box if you would like to perform a run which has the same effect
as a filter installed on the inlet. During a zero-check run the negative
charger is set to its maximum current and the positive charger is turned off.
Содержание SIZER EEPS 3090
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Страница 149: ...Serial Commands D 3 3 Enter the communications COM port 4 Enter the port settings described below and click OK...
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