M odel
552
8A
Di
stance M
eas
ur
ements
6-2
Optics Configuration
Maximum
Moving Retroreflector
Separation (Interferometer
Moving
and Range Within 5 Metres
Interferometer
of Laser Head)
Axial
Separation
50 metres
15
metres
(Head to (165 feet)
(
50
feetl
Retrorefiector)
Measur
ement
40 metr
es
15 metres
Range
(1
30
fee
ll
(
50
feet )
(Distance
of
Travel)
Velocity
of Light (VOL) Compensation Method
Manual
Operating (VOL Exactly
Automatlc
3
Temperature
Known
In
(Using 10751A/B
Range
2
Beam Path)
Air Sensor)
19.5- 20.5° C
±O.l
ppm
±
1.5
ppm
15-25°
C ±
O.l
ppm
± 1.7 ppm
0- 40° C + 0.1
ppm
± 3.0 ppm
'If
aU
lO
malic material temperature
s
en
~
illll
Is
used, the
sy~
t
e
m
error will be Incr
eas
ed
by Te IPpm\.
Te
Ippm \
..
c
ocffi
cient of
ex
pansion in ppm
/oC
X
a
vef~lIe
~
en
!K)
f
errOf In
0c.
ISe
e
107
52A/
B Ma_lmum
Sc
n
~o
r
Enof Specific
at
ion
.)
2Temperature of
~II
sysTem c
omp
onents
ar
e stabili zed
~n
y
w
here
within the
tempenture
r
an
ll
e shown.
3
10
7
511\
/ B mounted
In
recommended ori
en
tat
io
n.
12
month calib
ra
tion Interv
al
us
ed
. Humidity switch
se
t to posl,ion
clo~s
tto
actual humidit
y.
If humi
dit
y switch set
10
50%.
to
leran
c
c~
are 1
.75
p
pm
at
20
0
e,
2.
00
pp
m
at
15-25°e, and
3.
70
ppm
at
0-40°
C.
If 10
75
1A/ 6 m
ounted
inco
rr
ectly, add 2 ppm.
HARDWARE REQUIRED
In addition to the hardware required for any
meas
ur
ement u
si
ng the l aser M
eas
urement
Sys
tem
(
see
Fig
ure 4.1"
an
y
Di
stance
meas
ur
ement requir
es
the h
ar
dw
ar
e shown in Figure 6·1 .
OPTIONAL HARDWARE
O p
tio
nal hardware, sh
ow
n in Figure 6·2, can be c
on
nected to your l aser Measurement
Sy
stem to
all
ow
measurements to be made
fa
ster,
mo
re a
cc
u
ra
tely, or with
les
s effort on
yo
ur
part.
RELATED
MEASUREMENTS
Ve
locity M
eas
urements
..
..
.
.. ..
...
..
.
...
..
. . .
.•
..
.
..
. .
...
. .
...........
Section 7
REFERENCE
MATERIAL
Ph
ysic
al
Se
tup of the
la
se
r H
ea
d and Tripod
....
•.
•..
.
.....
.
.............
Section 4
Interconnection
s,
Turn
·on
.....
.
................
. . . .
.....
,',
...
..
•..
,
...
Sect
ion 5
A
li
gnment
Te
chniques
....
.
...
. ,
...
..
....
. ,
...•
• .
,.,.,
.....
...
..
, . .
...
5ec
tion
15