©
2008
Gastech
Australia
Pty
Ltd
Page
30
CO
500
30
200
500
100
ppm
6
NH3
100
25
35
100
50
ppm
9
O2
25.0
19.5
23.5
20.9
0.0
%VOL
3
O3*
2.00
0.1
0.3
2.00
1.75
ppm
9
PH3*
5.00
0.3
1.0
5.00
2.0
ppm
10
ETO*
20.0
1.0
5.0
20.0
5
ppm
6
HCL*
100
5.0
10.0
100
10
ppm
6
*These
gas
settings
are
available
in
new
units
with
hardware
version
3.1
or
greater.
8.
If
you
need
to
change
any
of
the
default
values,
press
the
“Select”
button
to
move
to
the
next
field.
9.
The
next
screen
is
used
to
configure
where
the
decimal
point
should
be
placed
in
the
gas
reading.
Use
the
“Up”
and
“Down”
buttons
to
select
the
correct
position
and
press
the
“Select”
button
to
move
to
the
next
menu.
10.
The
next
screen
is
used
to
set
the
full
scale
value
(maximum
value).
Use
the
“Up”
and
“Down”
buttons
to
change
the
value.
Pressing
the
“Select”
button
will
move
along
to
the
next
digit.
Repeat
this
procedure
until
the
value
is
set
and
then
press
the
“Select”
button
to
move
to
the
next
menu.
11.
The
next
screen
is
used
to
enable
or
disable
alarms.
Use
the
“Up”
or
“Down”
button
to
toggle
between
on
or
off.
Press
the
“Select”
button
to
move
to
the
next
menu.
Note:
Alarms
should
only
be
set
to
ON
if
the
D
‐
Guard
is
being
used
with
the
optional
relay
board
installed.
The
relay
board
is
discussed
in
the
previous
section.
12.
If
alarms
are
turned
on,
the
next
menu
will
prompt
for
a
value
at
which
alarm
1
(low)
will
be
activated.
Use
the
“Up”
or
“Down”
button
to
change
the
value
and
the
“Select”
button
to
move
to
the
next
digit.
Repeat
this
procedure
until
the
value
is
set
and
then
press
the
“Select”
button
to
move
to
the
next
menu.
13.
If
alarms
are
turned
on,
the
next
menu
will
prompt
for
a
value
at
which
alarm
2
(high)
will
be
activated.
Use
the
“Up”
or
“Down”
button
to
change
the
value
and
the
“Select”
button
to
move
to
the
Summary of Contents for D-Guard
Page 2: ......
