Rev.
10/22/01
HGM300/RDM800
mini
manual.doc
7
MULTIPLE
HGM300ís
CONNECTED
TO
A
BUILDING
AUTOMATION
SYSTEM
DAISEY
CHAIN
FASHION
RS-485
TERMINATOR
TERMINATOR
ì INî
TERMINATOR
TERMINATOR
TERMINATOR
TERMINATOR
ì OUTî
ì OUTî
ì OUTî
ì INî
Node
address
may
be
set
from
0
to
16
to
allow
building
automation
system
to
integrate
the
monitor
system
into
its
system.
(
Note:
Units
set
for
address
ì0î
and
address
ì1î
will
both
respond
to
address
ì1î
messages.
Therefore,
there
should
not
be
an
address
ì1î
and
an
address
ì0î
unit
on
the
same
network.
PROGRAMING
THE
HGM300
USING
THE
RDM800
1)
From
the
System
Screen
on
the
RDM800
press
the
button
adjacent
to
ì ZONESî .
2)
Press
button
adjacent
to
ZONE
1
Note
-
Press
button
adjacent
to
ì LOCATIONî .
Using
the
keypad
left/right
buttons
to
move
across
and
the
up/down
buttons
to
enter
alphanumeric
data,
enter
a
location
for
zone
one
(up
to
12
characters).
Press
ì ENTERî
to
lock
in
data
and
allow
you
to
move
to
the
next
function.
3)
Press
the
button
adjacent
to
ì REFRIGERANTî
Using
the
up/down
keys
select
the
proper
refrigerant
gas
for
this
zone,
then
press
ì ENTERî
4)
Press
the
ì DISTANCEî
button;
use
the
left/right
keys
to
move
across
and
the
up/down
keys
to
enter
the
length
of
tubing
for
this
zone,
then
press
î ENTERî .
(Note
ñ
to
disable
a
zone
set
the
distance
to
ì 0î )
5)
Press
ì AVE
TEMPî
This
function
is
used
to
ì standardizeî
the
readings
to
ì Standard
Temperature
and
Pressureî
(STP,
which
is
1
atmosphere
and
25
degrees
C).
This
function
is
rarely
if
ever
used.
The
PPM
readings
displayed
are
inversely
related
(i.e.,
as
temperature
goes
up,
PPMs
decrease)
to
the
temperature
of
the
sample
(and
thus
the
sample
area).
If
the
sample
area
temperature
does
not
vary
from
standard
temperature
(i.e.,
25
°
C
or
77
°
F)
significantly
the
PPM
reading
will
not
be
greatly
affected.
A
10
°
C
(18
°
F)
change
in
the
area/sample
temperature
will
result
in
~3.5%
change
in
the
PPM
reading.
The
Ave
temp.
parameter
can
be
used
to
compensate
the
PPM
reading
as
the
sample/sample
area
temperature
varies
from
ì standardî
temperature
(25
°
C
or
77
°
F).
System
Screen
HGM300
UNIT
1
NODE
1
HGM300
UNIT
2
NODE
2
HGM300
UNIT
3
NODE
3
HGM300
UNIT
4
NODE
4
BUILDING
AUTOMATION
SYSTEM
SETUP
SCREEN
#
1
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