Sutron MONITOR Operation & Maintenance Manual page 12

Setting the Averaging Time to zero means that only one sample is to be
collected (no averaging). This is the default setup. If Averaging Time is zero,
Sampling Interval and Subsamples will not show in the setup.
When averaging, MONITOR will take multiple samples and average them into a
final result. Each sample may additionally be composed of a number of
Subsamples.
• Averaging Time determines how long to collect samples for.
• Sampling Interval dictates how often to collect each sample.
• Subsamples tell how many sensor readings to include in each sample. Do
not use Subsamples unless you need two levels of averaging.
The simplest averaging requires only the use of Averaging Time. If one wanted to
know the average temperature for an hour, one would setup the Averaging Time to
one hour. Sampling Interval or Subsamples would not need to be changed.
MONITOR will collect sensor data all throughout the hour as fast as possible.
However, if the power consumption for measuring the sensor continuously for an
hour were unacceptable, one would use the Sampling Interval. If it were
sufficient to take one sample every minute, the Sampling Interval should be set to
one minute. That way, MONITOR will take 60 samples every hour, with
approximately a minute break between each sample.
If the sensor being used were noisy and needed filtering, MONITOR could take
several Subsamples and average them into each sample. In the setup for
temperature above, if the number of Subsamples were set to five, MONITOR
would take five readings at the start of every minute and average them. That
result would be used as a sample. Once an hour, 60 samples would be averaged
into a final result.
If Details is enabled (see below), MONITOR can record and display the
minimum and maximum sample collected. Individual samples are not recorded.
Minimum and maximum Subsamples are not recorded.
E.G. Averaging Time 1 minute, Sampling Interval 15 seconds Subsamples set to
one. For each measurement, four samples will be collected; each sample has
only one subsample.
st
12:00:00 1 sample is collected
nd
12:00:15 2 sample is collected
rd
12:00:30 3 sample is collected
th
12:00:45 4 sample is collected
12:00:45 all samples are averaged; result is time-stamped 12:00:00
Setting the Averaging Time to zero means that only one sample is to be collected
and is the equivalent of disabling averaging.
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