2
seconds
BKLT
button
again.
SET
AREA
VALUE:
While
at
VOL
mode,
press
SET
button
to
set
area
value,
the
meter
may
store
up
to
each
5
square
size
and
round
size
of
areas.
i.e.
Total
10
areas
storage
for
easier
and
faster
to
get
area
for
calculate
air
volume.
Press
and
hold
SET
button
+
short
press
POWER
button
quick
select
stored
area(1L1/1d~5L1/5d)
(While
at
VEL
mode).
1.
VEL
mode
operation
:
(
While
at
VEL
mode
)
VEL
icon
shows
on
the
bottom
layer.
a)
Press
HOLD
,
HAND
ON/OFF
button
to
hold
current
VEL
value.
b)
Press
MODE
button
to
cycle
viewing
Temperature,
RH%,
DP
(Dew
Point)
and
WB(Wet
bulb
temperature).
c)
Press
UNIT
button
to
change
the
unit
of
Temp.,
DP,
WB
d)
Press
and
hold
UNIT
for
2
seconds
to
change
velocity
unit(M/S,FT/M)
e)
Press
POWER
button
to
select
FT
2
/M
2
f)
Press
SET
button
to
save
velocity
reading,
LCD
shows
and
stores
the
number
with
the
readings
and
“REC”
icon
appears
then
disappear
after
data
stored.
2.
VOL
mode
operation:
(
While
at
VOL
mode
)
FLOW
icon
shows
on
the
bottom
layer
a)
Press
HOLD
,
HAND
ON/OFF
button
to
hold
current
VOL
value.
b)
Press
MODE
button
to
cycle
viewing
Temperature,
RH%,
DP(Dew
Point)
and
WB(Wet
bulb
temperature).
c)
Press
UNIT
button
to
change
the
unit
of
Temp.,
DP,
WB
d)
Press
and
hold
UNIT
for
2
seconds
to
change
velocity
unit
e)
Press
POWER
momentarily
to
change
are
unit
.
f)
Press
SET
button
to
enter
set
area
value
mode
2.1
Set
AREA
value
:
(While
entering
from
VOL
mode
)
a)
Press
MODE
button
to
change
area
type
L1
L2
D
L1…
cycle,
the
upper
layer
LCD
shows
L1
for
Length,
L2
for
Width,
D
for
diameter.
b)
Press
SET
button
to
select
the
storage
area
from
1st
to
5
th
group,
keep
pressing
MODE
button,
upper
layer
LCD
shows
1L1
1L2
1d
2L1
2L2
2d
3L1
3L2
3d
4L1
4L2
4d
5L1
5L2
5d
in
cycle.
Note:
After
you
set
1L1
(Length)
value,
press
MODE
to
1L2
(Width),
edit
completed,
press
SET
button
to
save,
as
now
you
don’t
need
to
edit
Diameter
(1D).
If
you
want
to
set
diameter,
keep
pressing
c)
There
are
two
units
of
area
for
selection:
M
(Meter)
and
FT
(Feet),
as
the
air
volume
units
are:
CMS
and
CFM.
You
may
press
POWER
button
to
toggle
M
2