Averaging - Ahlborn ALMEMO 5690-2M Operating Instructions Manual

11. Measuring with the measuring menus

11.4 Averaging

The average value for a measured value is needed for various applications
e.g. smoothing a widely fluctuating measured value (wind, pressure etc.).
Average flow velocity in a ventilation channel
Hourly or daily average values of weather data (temperature, wind etc.)
Also for consumption values (current, water, gas, etc.)
The average value M for a measured variable is obtained by totalizing a whole
series of measured values (M i ) and dividing by the number of measured values
(N).
Average value
The ALMEMO 5690-2M offers several differ-
ent averaging modes.
These include measured value smoothing for
the selected channel with a sliding averaging
window, averaging over individual measuring
operations selected by place or time (also net-
worked measuring as per VDE), averaging
over the full measuring time, over cycles, or
over specified measuring points.
For all these modes you can call up a special
wizard menu
Averaging
necessary parameters with help windows that
will teach you how best to proceed.
Measuring menu
Most averaging functions can also be per-
formed directly in a measuring menu, e.g.
´User menu´
U2 Average value
dows explaining the various averaging modes
are available in the programming stage, e.g.
Averaging : CONT
over the whole measuring opera-
tion by pressing START / STOP
over individual manual measuring
operations by pressing MANU
To calculate volume flow from the average ve-
locity and the cross-section of a flow conduit
you can use either the ´User measuring menu´
the Volume flow
40 ALMEMO
∑
M=
i
to help you enter the
Average value
. Help win-
wizard.
® 5690-2M
M
/N
i
*
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
AVERAGING:
damping by a sliding window ©
over single manual scans
Net measurement n points
over the measuring time
over the cycle
over measuring points
:
C © REC COM l© ©l R01 * ´´´´´´µµµµ¶
±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±±
01:
NiCr temperature
Damping:
Maximum value:
Minimum value:
Average value:
Averaging mode:
Cycle-timer:
Conv.rate: 10M/s
Measuring time:
START MANU M PRINT ESC
U3 Volume flow
ALMEMO 5690-2
F ESC
254,5 °C
20
255.0 °C

224.1 °C
245.7 °C
CONT
00:00:30 Sn
Cont: -
00:01:23.45
(see 11.4.9) or
*