Table des Matières
Publicité
Les langues disponibles
Les langues disponibles
! NOTE: The instrument should be allowed to
stabilize to room conditions in order to achieve
specified accuracy.
1.
If you are using a hood with the unit, assemble
the LoFlo Balometer as described in Section 4,
"Instrument Setup and Storage."
2.
Turn on the unit using the slide switch located on
the right side of the meter.
3.
When turned on, the LoFlo Balometer displays
the vent closed indicator. Close the vent on the
base by turning the top baffle counter clockwise.
4.
Select the proper mode for air flow direction,
supply or return.
5.
Place the LoFlo over the diffuser or grille to be
measured.
Handle Button
In 1-point mode, the handle button will freeze the
digital reading and flash the value when it is pressed for
less than three seconds. When the handle button is
pressed for more than three seconds, it switches the
LoFlo Balometer between vent closed mode and vent
open mode.
In 2-point mode, the handle button cycles the
instrument through the 2-point measurement process.
See 2-point mode section for detail.
Auto/Manual Ranging Button
When turned on, the instrument is in auto-range mode.
The user can switch to manual range mode by pressing
the range button. The manual range indicator will
show. By pressing the range button, the meter display
switches to the next volume range. To return to auto-
range mode, press and hold the range switch until the
manual range indicator disappears.
6
SECTION 6
Getting Started
6.
The auto range feature of the LoFlo Balometer
will choose the correct scale and display the
volume rate in the digital readout section. A quick
press on the handle switch will freeze the display.
7.
Another quick press will unfreeze the display.
8.
For volume rates above 150 cfm (255 m
l/s), it is recommended to use the vent open mode
to minimize air flow resistance effects. See
Section 7, "Detailed Operation."
! NOTE: Make sure that there are no gaps between
the LoFlo and the surface around the diffuser or
grille. Also, make sure that your body or other
objects are not blocking or diverting the air flow
where the air is exiting (supply) or entering
(return). This will affect the reading.
SECTION 7
Detailed Operation
Changing Measurement Units
To change measurement units:
1. Turn the instrument off.
2. Press and hold the supply/return button and switch
the instrument on at the same time.
3. The display will flash one of the three available
measurement units: cfm, m
4. Press and hold the supply/return button or the
range button to scroll through the measurement
units.
5. When the units you desire are displayed, switch the
instrument off.
6. When you turn the instrument on again, your
chosen units will be displayed.
3
/h, 71
3
/h, l/s.
Publicité
Table des Matières
