TSI Instruments ALNOR LOFLO BALOMETER Series, Owner'S Manual

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5
5
SECTION 6
Getting Started

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
®
Capture
Hood
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
®
Capture Hood 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 Balometer
®
Capture Hood
over the diffuser or grille to be measured.
6. The auto range feature of the LoFlo
Balometer
®
Capture Hood 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
3
/h,
71 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 Balometer
®
Capture Hood
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
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
®
Capture Hood 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.
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
3
/h, l/s.
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.