178
⑤
To set Measurement setting, click
“Measurement Setting”, repeat
steps
② ～ ④
to make the
measurement setting. After setting,
click “
”.
14.2 SETTING ATMOSPHERE DATA AND PRISM CONSTANT
Atmospheric
Parameters
(ppm):
The
speed
of
light
in
air
is
extremely
fast.
And
it
is
not
a
constant,
but
changes
with
the
temperature
and
pressure
of
atmosphere.
Once
atmosphere
correction
is
set,
this
instrument
can
implement
atmosphere
correction
automatically.
Even
the
instrument
is
powered
off,
the
atmosphere
correction
value
is
still
kept.
●
You
can
set
the
atmosphere
correction
value
under
star
key(
★
)
mode.
●
The
formula
of
atmosphere
correction:
(unit:
meter))
PPM
=
273.8
‐
0.2900
×
pressure
value
（
hPa
）
1
+
0.00366
×
temperature
value
（℃）
If
the
pressure
unit
is
mmHg
：
1hPa
=
0.75mmHg
●
When
disregard
atmosphere
correction,
set
PPM
value
as
0.
●
Standard
atmospheric
condition
of
Total
Station
(i.e.
the
atmospheric
condition
that
the
atmosphere
correction
value
of
the
instrument
is
0):
Pressure:
1013
hPa
Temperature:
20
℃
Prism
Constant
Since
the
constants
of
prisms
manufactured
by
different
companies
are
different,
the
corresponding
prism
constant
must
be
set.
Once
the
prism
constant
is
set,
it
would
be
kept
even
if
the
machine
is
turned
off.
Example:
Содержание NTS-960R
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Страница 2: ...Operation Manual NTS 960R Series Electronic Total Station SOUTH SURVEYING MAPPING INSTRUMENT CO LTD...
Страница 11: ...4 1 NOMENCLATURE AND FUNCTIONS 1 1 NOMENCLATURE...
Страница 12: ...5...
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