<div style=\"text-decoration:none\" height=\"27px\" valign=\"middle\" face=\"arial\" ZEISS JENA THEO 020 B
made in Germany
Year 1980\" +Condition is good, used NO case and accessories class=\"MsoNormal\" align=\"center\">DESCRIPTION AND INSTRUCTION FOR THEODOLITE ZEISS THEO 020B
1. Technical characteristics
Average error of measurement
--izmereno two positions of the telescope 1 mgrad (3 \")
By three measurement on straight and reverse 0,3 mgrad (1 \")
-Zoom 30 times
-View Angle 1,3 °
-Looking A distance of 1 km 23 m
-Minimal Referred to 1,5 m away
-maximal Sight distance when using the rack
with inch graduations:
--Rules evaluation with precision 0.5 mm 120 m
--Rules evaluation with precision 0.5 cm 500 m
-Permanent Multiplier 100
Angular error of the cylindrical vial
displacement of the bubble of 2mm 30 \"
-Interval Of graduation grad 1
The value of the division in the reporting scale 10 mgrad
Mass of the appliance with a metal box 9 kg
2.Spheres application
Rock theodolite THEO 020B is a versatile device suitable for all engineering measurements of angles in two directions, allowing an average error 3 \"(1 mgrad) in a single measurement in a direction two positions of the telescope.
3. Description of controls (Figures 1 and 2)
1. CE orientation of a target mark
2. Handle
3. The bolt handle
4. collimator for rough visual
5. Adjusting gon for Buson (compass with angle measuring device)
6. Protective cap-adjusting screws streak scale
7. eyepiece of the microscope for reporting on the rocks
8. eyepiece of the telescope with dioptriy setting
9. Focus ring (coarse and fine) of the sharpness of the target plate
10. collimator for rough visual setting in at the zenith
11. retainer screw horizontal scale
12. Handle for fixing the horizontal scale
13. Hole adjustment screw lifting screw
14. stopper for fixing the unit on a tripod
15. fixing screws table
16. Lighting mirror
17. bolt handle
18. Lens Telescope
19. Adjustable handle to illuminate the streak scale telescope
20. eyepiece optical projector alignment
21. Screws for leveling
22. Spring plate tripod
23. The main plate of the tripod
24. Allen screws for adjusting the opening of the tripod
25. Screw for fixing on tripod
26. Hook for hanging plumb line
27. Allen screws for securing the legs of the tripod
28. A package tripod
29. micrometer screw targeting height
30. micrometer screw traverse
31. The release lever rotation
32. Handle for inclusion on the testimony of the vertical scale
33. The release lever vertical movement
34. Marking the center bearing telescope
35. Cover the screw to adjust the power to tighten vertical
shifting.
4. Operation
4.1. Establishment
The device is attached to the tripod with the screw (25) .Before work unit to warm.
4.2. Centering
4.2.1. Centering built optical projector
- Tripod settled over the ground point.
- The appliance is leveled in the circular level by screws (21).
- Optical projector focuses on the eyepiece grid by rotating the eyepiece (20) and on the ground point by turning the eyepiece tube.
- Adjust the network ground point as:
- The appliance is leveled fine.
- The unit is moved in the tray (28) Tripod:
1. in the direction of the two lifting screws
2. in the direction of the third lift screw
- In need again leveled.
- Check the accuracy of centering in rotation of 180 °.
4.2.2. Centering using a plumb
- Repeat the establishment of t. 4.2.1.
- It is roughly centered by the tripod legs.
- Fine centering is done by moving the tray 28
Centering over the ground point does not depend on leveling the unit.
4.3. Leveling the appliance
- Adjust the roughly circular level by screws (21).
- Cylindrical vial is placed along the two screws and lifting
Turn them by leveling.
- The upper part of the device is rotated 90 ° and the level is adjusted to the third
screw (bubble moves in the direction of movement of the pointer
on the right hand).
4.4. Lighting
By rotating and tilting the illuminating mirror (16) is looking for optimal lighting of the rocks.
4.5. Adjusting the contrast of strokes
- Direct a telescope at the sky or illuminated white sheet placed
angled front of the lens.
- Rotates the eyepiece (8) of the telescope until the contrast of
strokes.
- Remembers settings including to assist in re-work.
- Focuses observed object through the ring (9) and the subject must .Shrihite
be equally sharp and no parallax.
- By turning the eyepiece of the microscope (7) adjusts the contrast of the rocks.
4.6. Endorse
- Exempt clamping levers horizontal and vertical
movement (31.33).
- By collimator (4) is directed roughly telescope.
- Fixed to the clamping levers (31,33) They can move separately, but
more preferably are together.
- It refers to the object by means of micrometer screws
horizontal and vertical guidance (29,30). (The last turn of the screw
Horizontal movement going clockwise, and screw
height c opposite direction).
4.7. Readings on the horizontal and vertical scale
In the lower part of the visual field into account the horizontal scale (Hz), and in
upper-scale on the vertical (V).
Objectives angular units (cities) are reported in this division of the scale, which is located within the fine reporting scale.
Hundredth part of the city are reported at fine scale serves as a pointer touches of rough rock.
Fractions of the division in the fine scale is estimated to eye.
Example reader (Figure 3):
V=291,860 gonHz=372,080 gon
Figure.3
To avoid confusion the vertical and horizontal scale are different in color.
When measuring only the horizontal edges the vertical scale can be turned off by the handle (32).
Errors of parallax, eccentricity of rocks and others. removed by measuring at two positions of the telescope. (After the displacement of several divisions and re-targeting).
4.8. Setting the horizontal scale
By pressing the lever (12) creates a connection to the horizontal scale with the upper unit .Then when rotating the top spin and scale and the reading remains constant.
By gently pressing the locking lever (11) in the direction of the vertical axis that connection razedinyava.Kogato this option is not used, the compound must be disconnected.
Gently press and release the lever and do not apply lateral force!
4.8.1.1. Establish Baseline
- Pressed a lever (11) rotates the upper part of the device until a required reading on the scale.
- Tighten the lever (31) to rotate.
- With a handle (30) finely adjusts the requested indication.
- Tighten the lever (12).
- Release the lever (31) and refers to the target.
- Release the lever again the anchor (12).
- Check the sighting and readings on the scale.
Fixing in the desired values of indication chosen direction
(eg. after orientation compass) eases the work and reduces errors
4.8.1.2. Re-measurement of angles
In the re-measurement of angles achieves higher accuracy.
- In what is position of the scale refers to the left target point and makes accurate reporting on the scale (and reading).
The angle is: A1 = a1- a0
- Tighten the lever (12).
- Again referring to the left point (in this indication remains a1).
- Push the latch lever (11) and refers to the right point (reading a2ne account).
- Repeat the operation for values a3, a4 .... an
After an displacements in one direction makes accurate reporting on the scale after targeting the right point.
- Calculate the mean:
An=.
- Release the lever (12) and the telescope is transferred through the zenith.
- Targeting the right point.
- Reported at the horizontal scale.
- The reading differs from the previous example of 180 °, or
200grad.
- Determine Al and calculate the average:
А=
A 1 - the actual angle
A r - angle obtained after repeated measurements right
Al - angle obtained after repeated measurements left
A - angle value after indirect measurement
To reach the average accuracy of the device 1 \"(0,3 mgrad) e enough triplicate in one direction.
4.9. Measuring distances by rangefinder scale
The eyepiece scale urada inflicted rangefinder strokes (Figure 4) to measure distances using vertical or horizontal rack.
- Record the section of the strip l between longitudinal touches.
- The horizontal distance from the point in which stands the unit to the rack is:
S = 100.l.sin v.
- For horizontal rack of the formula is:
S = 100.l.sin v,
where v is the zenith angle of reporting on the vertical carefully photos.
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