Temperature And Humidity Recording Instruments - IBM 650 SYSTEM Installation Manual

TEMPERATURE AND
HUMIDITY RECORDING
INSTRUMENTS
It
is
recommended
that
all
customers
install
temperature and
humidity-
recording instruments. Recording instruments are necessary
to
provide
a
continuous
record
of
temperature and humidity
conditions
in the
machine area
Also,
if
the air conditioning requirements are
not met, a record
is
available
to indicate the extent and
duration
of the
undesirable
condition.
The
record
of
temperature and humidity can be
used:
A.
To
assure
the
customer
that his air conditioning
installation
is
continuously
performing
its
job
properly.
Installation
errors and
loss
of efficiency
due
to
malfunction
of
some
part
of the
system
can be
quicldy detected.
B
.
To
determine
if
a
mandatory
drying-
out
period
is
necessary when
humidity
limitations are exceeded.
The
drying-out
may
be necessary
if
the
excess
humidity occurs
either
during periods
of actual
machine
operation or during
periods
when
the
machine
is
shut
down
and
unattended
.
The
extent
and
duration
of the excess humidity
is
used
to
determine
the duration
of the
drying-
out period.
C
.
To
determine
if
the air
environment
in the
machine area meets
the
requirements
for the
machine
Experience gained from machines
already
installed
has proved
that the
purchase
and
installation costs of the recording instruments are
a
wise investment
for
the
customer. The
instruments
warn
of
approaching
air conditioning trouble so
that
corrective measures
may
be taken
to
prevent
machine shutdown and
its
associated
effects.
The
instruments should be
of
a direct- reading, electric -drive type with a
7
day
recording
chart.
The
instruments should be so
located
that
they
will indicate
the conditions of the air
entering
the
machines
A
visual or audible
signal device should be incorporated
into the
instrument
installation.
Its
purpose
is to
provide
a visual or
audible indication
that the
temperature
or humidity conditions
in the
650 area are nearing
the
maximum
limitations stated
in this
manual.
Action can then be taken
by
the
customer's
personnel
to
correct
the situation and
avoid interruption
of
machine
operation.
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