45170CM
‐
en
‐
GB_V1.1
1/15
3
Measurements
A.
Air
Velocity
Measurements
1.
Use
the
Mode
button
to
step
to
the
Anemometer
mode
(An).
In
Anemometer
mode,
the
display
will
show
Air
Velocity
and
Temperature.
2.
Press
Unit
button
to
select
desired
unit
of
measure
(FPM,
MPH,
KNOT,
KM/H,
or
M/S).
3.
Face
the
Air
Flow
Sensor
into
the
source
of
the
air
stream.
4.
Allow
time
for
the
reading
to
stabilize
and
then
note
the
value
on
the
display.
B.
Relative
Humidity
and
Ambient
Air
Temperature
Measurements
1.
Use
the
Mode
button
to
step
to
the
RH
mode
(rH).
In
RH
mode,
the
display
will
show
the
Relative
Humidity
reading
(upper
right)
and
the
Temperature
reading
(lower
left).
2.
Press
the
°
C/°F
button
to
select
the
desired
temperature
unit
of
measure.
C.
Temperature
Measurements
Using
Type
K
Thermocouple
1.
Use
the
Mode
button
to
step
to
the
Type
K
Temperature
mode
(tP).
In
Temperature
mode,
the
display
will
show
only
the
thermocouple
temperature.
2.
Plug
the
thermocouple
into
the
meter's
thermocouple
input
jack
on
the
face
of
the
meter.
If
no
thermocouple
is
connected,
or
if
the
thermocouple
is
defective,
the
meter
will
display
dashes.
3.
Press
the
°
C/°F
button
to
select
the
desired
temperature
unit
of
measure.
D.
Light
Measurements
1.
Use
the
Mode
button
to
step
to
the
Light
Meter
mode
(Light).
For
convenience,
the
LCD
display
is
orientated
180°
from
all
of
the
other
function
displays.
2.
Press
the
Lux/Ft
‐
cd
button
to
select
Lux
or
Footcandle
units
of
measure.
3.
Before
making
measurements
‘zero’
the
meter
by
blocking
the
light
sensor
(to
cause
a
‘no
light’
condition)
and
pressing
the
Z
button.
The
reading
should
zero.
4.
To
measure
light,
position
the
meter
so
that
the
light
source
shines
as
directly
as
possible
on
the
meter’s
light
sensor
dome.
Note
the
reading
on
the
display.
E.
Airflow
(CFM,
CMM)
Measurements
1.
Use
the
Mode
button
to
select
the
Air
Flow
mode
(AirFL).
In
Airflow
mode,
the
meter
can
measure
the
volume
of
air
moving
through
a
duct,
for
example.
The
display
will
show
the
CFM
(cubic
feet
per
minute)
or
CMM
(cubic
meters
per
minute)
unit
icon
on
the
bottom
of
display.
Use
the
UNIT
button
to
toggle
CFM
and
CMM
units.
2.
Press
the
Area
button
(A)
and
then
use
the
and
▲▼
buttons
to
program
the
area
value.
Press
the
REC
/
Enter
button
to
save
the
area
value.
See
the
‘Useful
Equations’
section
for
help
on
calculating
the
area
of
a
duct
or
other
airway.
3.
For
air
flow
measurements
the
area
units
are
meters
squared
or
feet
squared.
The
lower
display
will
show
m
‐
2
(for
CMM)
or
F
‐
2
(for
CFM).
4.
The
area
setting
range
is
0.001
to
30.000
meters
squared
or
0.01
to
322.92
feet
squared.
5.
After
programming
the
area,
face
the
anemometer
sensor
into
the
wind
source
and
note
the
CFM
or
CMM
air
volume
reading.
