14
EBTRON • 1663 Hwy. 701 S., Loris SC 29569 • Toll Free: 800.2EBTRON (232.8766) • Fax: 843.756.1838 • Internet: EBTRON.com
G
OLD
S
ERIES
GTC116 T
RANSMITTER
a measurable difference!
EBTRON
IG
_GTC
116_R
3
A
5.5
GTC116
Changing
Factory
Default
Setup
Menu
Settings
5.5.1
Setup
Menu
Options
The
GTC116
Transmitter
is
setup
and
tested
at
the
factory
to
be
fully
operational
when
sensor
probes
are
connected
and
power
is
applied
(set
the
power
switch
to
the
“ON”
position).
Factory
settings
can
easily
be
changed
using
the
SETUP
MENU
by
simultaneously
pressing
and
releasing
the
“UP”
and
“DOWN”
buttons
while
the
transmitter
is
in
its
normal
operating
mode.
Appendix
A
details
the
SETUP
menus.
Navigate
through
the
SETUP
menus
to
make
changes
to
the
transmitter
configuration.
The
settings
take
effect
immediately.
The
following
are
common
field
modifications
to
the
factory
default
settings.
5.5.2
Adjusting
the
Low
Limit
Cutoff
Feature
The
low
limit
cutoff
feature
(menu
item
LLIMIT=
)
forces
the
output
signal
for
the
airflow
rate
to
zero
whenever
the
calculated
airflow
rate
falls
below
the
specified
Low
Limit
value.
5.5.3
Selecting
Actual
and
Standard
Output
Measurement
Type
The
transmitter
is
set
from
the
factory
to
provide
actual
airflow
measurement
units
(displayed
as
“ACFM”
and
“AFPM”).
In
this
mode,
airflow
measurements
are
calculated
for
actual
inlet
conditions.
If
using
actual
airflow,
corrections
for
altitude
are
entered
through
the
ALT=
setting
in
the
Setup
menu.
If
desired,
the
output
can
be
set
to
provide
standard
airflow
measurement
units
(displayed
as
“SCFM”
and
“SFPM)
which
provides
measurements
that
are
corrected
to
standard
conditions.
5.5.4
Output
Scaling
EBTRON’s
Gold
Series
sensors
are
individually
calibrated
between
0
and
the
factory
default
full
scale
in
wind
tunnels
traceable
to
the
National
Institute
of
Standards
and
Technology
(NIST).
Sensors
are
independent
and
produce
“percent
of
reading”
accuracy.
Changing
the
full
scale
value
does
not
change
the
accuracy
of
the
device.
Factory
default
analog
output
scaling
can
be
changed
within
the
SETUP
menus.
5.5.5
Changing
the
LCD
Display
from
Volumetric
Flow
CFM
to
Velocity
FPM
The
GTC116
transmitter
is
shipped
from
the
factory
to
indicate
volumetric
flow.
To
display
velocity
in
FPM,
enter
the
SETUP
menu
and
in
the
DISPLAY
submenu,
change
the
“*LCD
UM=ACFM”
to
“*LCD
UM=AFPM”.
Changing
the
LCD
display
units
will
not
affect
the
analog
output
signal.
5.5.6
Converting
the
Analog
Output
Signal
from
FPM
to
CFM
The
GTC116
transmitter
is
shipped
from
the
factory
with
analog
output
“OUTPUT
1”
set
to
indicate
velocity
in
AFPM.
To
automatically
convert
this
analog
velocity
output
to
volumetric
flow
(ACFM),
simply
set
the
*AO1
UM
from
AFPM
(default)
to
ACFM
in
the
SETUP
menu.
If
you
wish
to
manually
convert
the
velocity
output
to
volumetric
flow
(ACFM),
simply
multiply
the
indicated
output
velocity
(in
FPM)
by
the
free
area
of
the
air
flow
probe
installation
location.
Refer
also
to
Table
7
for
a
complete
listing
of
conversions
for
each
of
the
analog
outputs
of
the
GTC116.
The
AO1
full
scale
analog
output
(OUTPUT1
)
value
is
determined
by
the
AO1
FS
setting
within
the
SETUP
menu.
5.5.7
Locking
the
Configuration
Settings
The
GTC116
transmitter
configuration
settings
can
be
locked
at
one
of
three
security
levels
within
the
SECURITY
submenu
using
the
LOCK
SEC=
item.
When
LOW
security
level
is
selected
(LOCK
SEC=LOW)
the
last
4
digits
of
the
board
serial
number
are
automatically
assigned
as
the
lock
code.
To
see
board
serial
number,
navigate
to
DIAGNOSTICS
menu
in
SERIAL
NUMBERS
item.
When
the
MED
security
level
is
selected
(LOCK
SEC=MED)
the
user
enters
and
confirms
a
security
code.
In
the
event
that
this
code
is
lost/misplaced,
EBTRON
can
provide
a
key
that
is
unique
to
the
transmitter
to
unlock
it.
Contact
EBTRON
customer
service
for
this
code.
When
the
HIGH
security
level
is
selected
(LOCK
SEC=HIGH)
the
user
enters
and
confirms
a
security
code.
In
the
event
that
this
code
is
lost/misplaced,
the
transmitter
must
be
returned
to
the
factory
in
order
to
unlock
it.
When
LOCK
SEC=HIGH
is
selected,
the
user
defined
setting
can
only
be
changed
after
entering
the
user
defined
code.
STORE
THE
LOCK
CODE
IN
A
SAFE
LOCATION!
For
security
reasons,
the
HIGH
level
lock
code
can
only
be
reset
by
returning
the
transmitter
to
the
factory.
!
