- 90 -
requirements.
6.
6.
6.
6.
With the laser plummet, unbolt the laser cover, using 1 # hex
wrench to adjust the three screws, fasten one side and loosen the
other side, and adjust the laser flare to point O.
7.
7.
7.
7.
Put the cover back in place.
1
1
1
17
7
7
7.8
.8
.8
.8 Instrument
Instrument
Instrument
Instrument additive
additive
additive
additive constant
constant
constant
constant (K)
(K)
(K)
(K)
The instrument constant is inspected when it out, and correct it
inside the machine, make K = 0. Instrument constant change
rarely, but we suggest that check it this way for one or two times
each year. The checkout should be done in the standard baseline ,
or you can take the following simple method.
·
Checkout
Checkout
Checkout
Checkout
1.
1.
1.
1.
Choose a flat field A to set up and level the instrument , mark
three points A
、
B
、
C in the same line ,their interval is 50m, and
set up the reflection prism accurately.
2.
2.
2.
2.
After setting the temperature and pressure data, accurately
measure the horizontal distance of AB
、
AC .
3.
3.
3.
3.
Setting up and centering the instruments accurately,
measure the horizontal distance of BC accurately.
4.
4.
4.
4.
You can get the instrument ranging constant:
K = AC-(AB + BC)
K should be close to 0, if | K | > 5 mm ,it should be send to
standard baseline field for strict checking, then calibrate it
based on the checking value.
·
Calibration
Calibration
Calibration
Calibration
If it turns out the instrument constant does not close to 0 but
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