Averaging
1. Stop measurement, if it is started:
<STOP>
2. Set the averaging mode (s. 8.5):
Averaging mode: CONT
For smoothing a meas. value select damping:
Damping: 20
Switch the continuous scanning off, if required:
Conv. rate:10M/sCont:
-
3. Clear avg. value by selecting it (s. 8.4) and using:
<CLR>
Function ´Average value´ displays:
Average val: ----- m¡
Function ´Counts´ displays:
Counts: 00000
4. Manual scans Ex of single measurements:
<MANU>
Function ´Average value´ displays:
Average val: 12.34 m¡
Function ´Counts´ displays:
Counts: 00001
5. Repeat step 4 for each measuring point.
6. Output of all function values of the menu by using:
<PRINT>
9.4.4 Net Measurement
Especially when determining the average velo-
city in a flow conduit according to the guidelines
VDI/VDE 2640, measurements are to be car-
ried out in a net of individual points in a cross-
section which is placed vertically with respect to
the flow direction (s. man. 3.5.5). A special
menu for net measurements is available to re-
cord all single values or to have the possibility
to repeat error measurements. It can be selec-
ted in the function ´Average value´, using the
key
<ARRAY>
. The menu can be used for other
point measurements, too, of course.
1. The Averaging mode is not important:
AveragingMode: ----
For smoothing a meas. value select damping:
Damping: 20
2. Select function average value:
AverageValue:
-----
3. Select menu net measuremet using the key:
<ARRAY>
4. For data recording, press the key:
PROG
5. Set the number of points:
Net measurement Points:
5
A cleared array appears:
01: --.-- m¡
6. Select a measuring point using the key:
01
: --.-- m¡
7. Start the measurement with key:
<START>
01
: 11.22 m¡
8. Stop the measurement with key:
<STOP>
01
: 11.43 m¡
9. Record all points according to steps 6 to 8:
10. Clear the array and new measurement with key:
<CLEAR>
11. Back to the measuring menu:
<ESC>
ALMEMO
®
2690-8
33
Net measurement Points: 5
01: 11.43 m¡
02: 12.51 m¡
03: 19.71 m¡
04:
--.-- m¡
05: --.-- m¡
Avarage value: 14.51m¡
STOP CLEAR F ESC
