
GDS-68XP Operation & Maintenance Manual, Revision 3.5
Page 15
5
INSTALLATION
SELECTING
A
LOCATION
Locate
the
GDS
‐
68XP
as
close
as
practical
to
the
source
of
the
sample
gas
to
minimize
latency
and
ensure
that
fresh
sample
is
available
for
each
sequence.
The
GDS
‐
68XP
plate
and/or
enclosure
feature
mounting
holes
that
can
be
used
to
securely
attach
the
monitor
to
a
bulkhead
or
wall.
Make
sure
there
is
sufficient
clearance
below
and
to
the
left
side
of
the
GDS
‐
68XP
to
allow
room
for
power
&
signal
cables,
purge
air,
sample,
filter
bypass
(if
installed),
filter
drain
and
sample
exhaust
tubing.
If
the
unit
is
installed
outside
or
where
insects
or
dust
may
be
present,
be
sure
that
the
supplied
purge
air
filter
is
in
place
and
that
a
cover
is
placed
over
the
Cal
Gas
Inlet
port.
Always
mount
the
GDS
‐
68XP
in
a
vertical
position
to
ensure
proper
operation
of
flow
switch
and
filter
drains.
The
non
‐
metallic
enclosure
option
is
strongly
recommended
if
unit
is
to
be
installed
outside
or
in
areas
where
high
or
low
temperature
extremes
may
occur.
NOTE:
TEMPERATURES
BELOW
0°C
MAY
KEEP
THE
PURGE
AIR
PUMP
FROM
STARTING.
Always
use
recommended
conduit
and
poured
seals
for
signal
and
power
wiring
installation
in
hazardous
areas.
Consult
local
codes
and
regulations
where
appropriate.
Figure 5-1: GDS-68XP (High Pressure, Standard Filter)
Purge
Air
Inlet
Sample
Inlet
Power
&
Signal
Input
Filter
Drain
Sample
Exhaust
Regulator
Flow
Meter
AC
Heater
GASMAX
Sequencer
Sensor
Sensor
Flow
Cell