8
2.2.1.4
Velocity
Unit
Using
this
option,
the
user
can
select
the
unit
in
which
air
velocity
is
measured
and
displayed.
MENU
SETTINGS
VELOCITY
UNIT
FPM
M/S
1.
Press
MENU
button
to
enter
the
menu
options
2.
If
requested,
enter
ADMIN
PIN
digit
by
digit
by
using
the
UP,
DOWN
and
SET
buttons
3.
The
alarm
will
sound
for
a
few
second
to
indicate
that
the
hood
is
unsafe
for
work
4.
Press
UP
and
DOWN
buttons
until
display
show
“SETTINGS”.
Press
SET
button
to
confirm
5.
Press
UP
and
DOWN
buttons
until
display
show
“VELOCITY
UNIT”.
Press
SET
button
to
confirm
6.
Press
UP
and
DOWN
buttons
to
choose.
Press
SET
button
to
confirm
7.
Press
MENU
button
to
exit
the
menu
options
2.2.1.5
Temperature
Unit
Using
this
option,
the
user
can
select
the
unit
in
which
air
velocity
is
measured
and
displayed.
MENU
SETTINGS
TEMP
UNIT
CELCIUS
FAHRENHEIT
1.
Press
MENU
button
to
enter
the
menu
options
2.
If
requested,
enter
ADMIN
PIN
digit
by
digit
by
using
the
UP,
DOWN
and
SET
buttons
3.
The
alarm
will
sound
for
a
few
second
to
indicate
that
the
hood
is
unsafe
for
work
4.
Press
UP
and
DOWN
buttons
until
display
show
“SETTINGS”.
Press
SET
button
to
confirm
5.
Press
UP
and
DOWN
buttons
until
display
show
“TEMP
UNIT”.
Press
SET
button
to
confirm
6.
Press
UP
and
DOWN
buttons
to
choose.
Press
SET
button
to
confirm
7.
Press
MENU
button
to
exit
the
menu
options
2.2.2
Calibration
The
purpose
of
calibration
is
to
ensure
the
accuracy
of
the
airflow
display
and
alarm
(if
present).
This
involves
measuring
airflow
with
reference
instrumentation
and
establishing
reference
between
airflow
sensor(s)
on
the
hood
to
the
standard
reference.
Calibration
should
only
be
carried
out
by
trained
personnel.
This
section
is
presents
a
brief
overview
of
the
calibration
menu
function.
For
more
information,
refer
to
test
report.
2.2.2.1
Set
Constant
Every
sensor
manufactured
by
Esco
has
a
specific
Sensor
Constant
which
is
used
for
temperature
compensation
performed
by
the
temperature
sensor.
2.2.2.2
Zero
Sensor
This
option
let
the
controller
record
the
specific
sensor
output
voltage
and
correspond
it
to
0
m/s
or
0
fpm.
2.2.2.3
Calib
Sensor
This
option
allows
proper
calibration
and
operation
of
the
airflow
sensor
alarm.
There
will
be
three
points
to
be
calibrated,
namely
inflow
fail
point,
inflow
nominal
point,
and
downflow
nominal
point.
Summary of Contents for Ascent max
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