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rectly from the average value menu by pressing
This lists the following functions
Cross-section calculation ready :
Channel type
Rectangular with width and depth, Channel type Tubular k:1.00
:
Tubular with diameter or
Surface with cross-section :
inclusive correction factor (k-factor)
Display of volume flow in m
Display of standardized volume (20°C, 1013 mbar): standardized :
Save data in a volume flow file :
Array measuring Option VN
12.2.7
Average velocity in a flow channel is calculated as
per DIN EN 12599, namely by performing measuring
operations at particular array points in a cross-sec-
tion vertical to the pipe axis (see Manual 3.5.5). To
ensure that all individual values are logged in
standardized form a menu combination
measuring
specially conceived for flow sensors
(m/s) is provided.
In the 1st menu the channel data and a measuring point designation are en-
tered. If a memory connector with SD-card is available, channel data already
acquired selected with
file by means of
Channel type with k-factor, dimensions, and
number of holes are all prescribed by the chan-
nel; the number of measuring depths and grav-
ity lines are used to calculate the actual meas-
uring depths (3.5.5).
Entering the averaging duration in seconds ensures uniform data acquisition per
point by averaging over a fixed time. If the averaging duration is deleted, its start
and stop are prescribed by the measuring duration.
To select the 2nd menu press key(s)
It is thus possible to acquire all measuring points
from the 1st hole right through to the last hole at
all precalculated depths. The measuring operation
is initiated by pressing the
point
is
acquired
with
key. Any point can subsequently be
<START>
reselected for correction by means of the cursor
keys.
3
/h:
,
PROG
FIRST
.
LOAD
<MEAS>
one
after
VOL ►>
diameter :
cross-section : 02345 cm²
volume flow
<STORE>
Array
,
and can be loaded from an existing
NEXT
key; then each
the
other
12. Function menus
.
00175 mm
1934.
see 12.2.7
< ►F >
m
/h
3
see 12.2.7
41
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