10. Measuring using Measuring-Menus
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10.4.1
Damping of Meas. values by a Sliding averag.
window
The first possibility of averaging concerns only the measured value of the indi-
cated channel and helps to damp measured values of an unstable or strongly
fluctuating nature, e.g. particular turbulent flows by means of sliding averaging
over a time window. The Level of damping
can be set via the function
Damping
over the number of the respective taken values within the range of 0 to 99. The
smoothed measured value also applies for all subsequent evaluation functions.
Damping can thus also be used in conjunction with averaging over single meas-
ured values (s. 10.4.3) or at net measurements (s. 10.4.4) .
Meas. value damping over e.g. 15 values with:
Damping: 15
Continuous scanning should be switched off,
because otherwise the conversion rate would be
reduced too much with many measuring points:
Conv.rate: 10M/s Cont: -
10.4.2
Averaging Mode
A detailed description of averaging over measuring point scans is given in the
manual section 6.7.4. The type of averaging is determined through the func-
tion
Averaging Mode
. With the averaging mode and the corresponding opera-
tion the following modes can be set:
Function no averaging:
Averaging Mode: -----
Averaging over single measurements with MANU or
all measured values from START to STOP:
CONT
Averaging over all measured values of a cycle:
CYCL
Lightening up for control purposes if averaging is in progress:
»
Display of the average value in the function
Average value 12.34 m/s
For recording average values a function channel with the range M(t) or the corre-
sponding output function M(t) is required instead of the measured value. (s. 10.5.5).
10.4.3
Averaging over Manual Single Measurements
Single manual meas. point scans E
i
are performed for an averaging of isolated
measurements at certain points or times. At all measuring points where meas-
ured values must be averaged the averaging must be switched on by using the
averaging mode ´
CONT
´, a measurement in progress must be stopped.
