37
36
Task:
Measuring the volume flow in a duct with a 500 mm diameter and vane probe
(Ø 16 mm), printout on attachable printer.
Procedure:
To measuring velocity connect the vane to the telescope and secure, then connect to the
measuring instrument and switch on the instrument.
Assign the function buttons with
and
.
To do this activate the function bars for the function buttons with
and select the required function by pressing
.
Return to the measurement window via
or
.
1.)
Press
to enter the main menu from where you can check or edit the measuring
instrument configurations:
•
INSTRUMENT
-
D
ATE
/
TIME
:
Current time?
•
-
P
RINTER TYPE
:
Attachable printer?
2.)
Return to
current measurement
via .
Select the print symbol in the top left function bar and the measuring location
on the top right (e.g. “Duct D500) via
and
, or if not available
set
up with
C
HANGE
- N
EW
L
OCATION
.
Reactivate the current measurement via
.
Activate volume flow calculation (see figure on left) via the
function
button and enter the correct duct dimensions (e.g. via the diameter function
button
→
50.00 cm; press
).
The instrument goes through a restart and the volume flow will now appear in
the display.
In
DEVICE-U
NITS
-Flow, instead of volume flow it is possible to activate the
corresponding standard volume flow (reference to 1013 mbar, 0 °C)
-
marked
by capital letters M3/h
-
.
The required information appears on the display.
Vol.
Vol.
Mean
0
0..0
0
2
22
2..2
2
m/s
°C
Location
Mean
Vol
0
0..0
0
2
22
2..2
2
m/s
°C
Duct D500
Mean
Vol
Ø
0
05
50
0
c
cm
m
Volume flow
a x b
Unit
Multi-point meas.
Start
000
End
0
0..0
0
0
0
2
22
2..2
2
m/s
m
3
/h
° C
Velocity measurement
Automatic storing
Function button “Send”
All current readings are transmitted to your PC as ASCII
files including unit via the RS232 interface once the
Send
button is pressed. The data can be displayed,
saved and printed using the HyperTerminal program.
Thanks to this function, readings can be transmitted to a
PC without having to start a measurement program. The
data does not come in regular cycles but asynchronous
i.e. each location comes with the date and time of the
measurement. The time intervals between the different
measurements can vary.
Calling up the HyperTerminal program:
Normally, you will find the program in “Programs” -
“Accessories”. Once you have called up the program,
you will have to enter a name for the connection (e.g.
RS232 445), then you will have to define the COM
interface, to which the interface is connected. The next
step involves defining the COM interface settings.
Select the following: 19200 bits/second, 8 data bits, no
parity, 1 stop bit and no log.
