Thermo Scientific SOLA II Flare User Manual page 50

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3. The Average Time submenu allows you to set the averaging time. The
average time is a period between 1 and 240 seconds during which the
analyzer takes SO
of the results. For example, if you set the averaging time to 10 seconds,
the average concentration of the last 10 seconds is output at each
update. If you set the averaging time to 60 seconds, the average
concentration of the last 60 seconds is output at each update. Thus, a
lower averaging time means a faster response to concentration changes.
Longer averaging times are typically used to smooth output data.
See the figure below.
A n a l y z e r
A v e r a g e

Figure 5-4.
4. The average override is expressed as a percentage of change and
determines when the unit switches to the fast average. As the reading
stabilizes at the new level, the analyzer progressively increases the
average used until it reaches the programmed average time.
A n a l y z e r
A v e r a g e

Figure 5-5.
5. The fast average time provides the ability to respond to changes faster
without sacrificing stability achieved using a longer average time.
Note Both the regular and fast average times need to be set at multiples of the
injection rate. For example, if the rate is two injections per minute, averages
should be set to 30, 60, 90, 120, 150, 180, 210, or 240 seconds. ▲
measurements used to determine a moving average
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SOLA II Flare User Manual
Chapter 5
5-2