If a sensor with an ALMEMO
®
connector is connected, the following modes can
be set by pressing keys
PROG
,
▲
▼
,
PROG
:
Function
Display
No averaging:
- - - -
Continuous averaging from start to stop (see 6.4.3)
or over single measurements, if not started (see 6.4.4):
C o n t
Averaging over each cycle (see 6.4.6):
C Y C L
Averaging has become much more straightforward and effective compared with
previous models - thanks to the following measures.
1. Averaging is always performed by means of on-going semi-continuous or
continuous measuring point scanning. A measuring cycle is thus no longer
necessary for this purpose; if an averaging mode has been programmed
then all measuring points will always be considered for all actions (start,
stop, manual).
2. With semi-continuous measuring point scanning (default setting), the se-
lected measuring point is always scanned at exactly half the measuring rate.
3. All function values used in averaging can be saved via the function channels
for average value ´M(t)´, number ´n(t)´, and volume flow ´Flow´ (“S” option)
or output via the interface.
4. For the function channels there are now also device-internal channels (e.g.
M(t) or Flow on channel M3 with the flow sensor on reference channel M1).
The advantage is that when using several sensors for the same application
these sensors do not have to be reprogrammed and can be exchanged
without losing the function channels. If, however, the whole application ope-
rates with only one sensor, then programming in the sensor itself still makes
more sense (see Section 4.2).
5. It is now also possible for averaging purposes to start and stop measuring
operations without a cycle; all measured values and function values at start
and stop are acquired and saved (option “S”).
6. For all continuous averaging operations the averaging mode is ´Cont´. How
this functions depends completely on the following :
Start - Stop by pressing the
START/
STOP
key Single measurements by pres-
sing the MANU key.
7. The
START/
STOP
key function is available in all functions.
8. The average val. for all channels are normally deleted with each new start.
6.4.3 Averaging over the time from start to stop
To acquire the average of all measured values for a measuring channel over a
certain period or for the surface area of a ventilating channel (see Manual,
ALMEMO
2390-5
33
Measuring operations
Содержание ALMEMO 2390-5
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