Initializing pressure probe / Activating velocity and volume flow
17
4. Parameter settings
Differential pressure probe (testo 445 only):
Activating/deactivating m/s, m
3
/h, in addition to mbar;
initialisation
Velocity probes (testo 445 only):
Activating/deactivating m
3
/h, in addition to m/s
Zero adjustment of differential pressure probe (hPa) and
return to current measurement.
Switch velocity speed (m/s) in the display on and off.
Switch ON/OFF
The respective flashing setting is confirmed with .
Switch volume flow (m3/h) in the display on and off.
Switch to ON/OFF
OFF flashes
return to measurement.
ON blinkt Input of duct cross-section:
22.73
1:
2:
M.05
MAN
N.0017
mbar
m/s
td°C
hpa=0 m/s
ON OFF
m/s
ON OFF
m3/h
Once the cross-section is entered, return to the current volume flow measurement.
Ø
0.500 m
2
/ =
scroll
value
= Next
position
A
B
Ø AxB
FUNNEL
m
2
100. cm
20
100. cm
100, cm
Ø = round duct cross-section;
enter diameter.
AxB = rectangular duct;
enter side lengths A and B.
m
2
= known cross-section
area in m
2
;
enter cross-
section area.
FUNNEL = Funnel factor in
volume flow funnel used
(See Instruction manual on
volume flow funnel).
...
...
The setting functions are activated in accordance with
reading line selected - flashing cursor in display.
i
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