LIMITATIONS
OF
USE
TT
Series
LR Manual
Page
01
TT
Series
instruments
are
intended
for
measurement
of
low
differential
air
pressure
in
and
around
commercial
and
industrial
air
handling
systems,
and
for
use
with
a
Pitot
Static
Tube.
The
instruments
are
not
suitable
for
liquid
pressure
measurement,
and
must
not
be
used
with
corrosive,
toxic
or
otherwise
hazardous
gases.
The
instruments
are
not
classified
“Flameproof”
or
“Intrinsically
Safe”
and
consequently
must
not
be
used
where
an
explosion
hazard
may
exist
and
are
not
authorised
for
Life
Support
applications.
During
normal
operation
small
quantities
of
air
(typically
less
than
0.1ml/min)
may
pass
into
or
out
of
the
system
under
test:
it
is
the
user’s
responsibility
to
consider
the
consequences
of
such
leakage
before
determining
the
suitability
of
the
instrument
for
any
particular
purpose.
The
instrument
must
be
turned
off
before
it
is
stored
or
transported
and
if
it
is
to
be
stored
for
a
long
period
of
time
or
is
to
be
transported
by
air,
the
battery
must
be
removed.
There
is
a
12
‐
month
guarantee
on
all
manufactured
parts.
This
guarantee
does
not
cover
any
consumables,
and
/or
wear
and
tear
during
normal
or
abnormal
use.
The
guarantee
becomes
null
and
void
if
the
instruments
parts
have
been
tampered
with,
misused,
abused
or
used
outside
the
parameters
set
out
in
the
manual.
The
manufacturer
will
determine
if
the
instrument
is
repairable
or
requires
replacement;
charges
may
apply.
