Kolida KTS-470 R Series, Руководство пользователя

Страница: 199 / 216

199
5. Repeat the inspection and adjusting steps to make the instrument meets the
requirements.
6. Replace the protective cover.
15.9 INSTRUMENT CONSTANT
（
K
）
Instrument constant has been checked up and adjusted in the factory, K=0. It
seldom changes and it is suggested to check one or two times every year. The
inspection should be made on the base line, also can be made according to the
following method.
· Check
1. Mount and level the instrument on Point A at a plain field. Use the vertical hair
to mark Point B and Point C with the distance of 50m on the same line, and set the
reflector accurately.
2. After setting temperature and air pressure, measure the horizontal distance of
AB and AC accurately.
3. Set the instrument on Point B and center it accurately, measure the Horizontal
Distance of BC accurately.
4. Then the Instrument Constant can be obtained:
K
＝
AC
－
(AB
＋
BC)
K should be near to 0, If
｜
K
｜＞
5mm, the instrument should be strictly
inspected in the standard baseline site, and adjusted according to the inspection value.
Adjust
If a strict inspection proves that the Instrument Constant K has changed and is not
close to 0. If the operator wants to adjust, should set Stadia Constant according to the
Constant K
●Set the orientation via the Vertical Hair to maintain Point A, B, C on the same
line precisely. There must be a fixed and clear centering mark on the ground of Point
B
●Whether the prism center of Point B coincides with the Instrument Center is a
significant step to inspect the accuracy. So on Point B the tripod or compatible tribrach
should be used. It will decrease the difference.
·
Input Instrument Constant: