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Hiện có 2 khách
Lượt truy cập 62560
Máy thủy bình

Đây là loại máy không thể thiếu trong công tác trắc địa. Máy được sử dụng để lập lưới khống chế độ cao các cấp, hạng; quan trắc công trình,…

Công ty Địa Hải hiện đang có:

- 2 máy Leica NA2 (Thụy Sỹ)

- 1 máy Topcon AT-G2 (Nhật Bản)

- 1 máy Topcon AT-G3 (Nhật Bản)

Máy thuỷ bình Leica NA2

na2

Precision Levels for all your stringent requirements.

Leica NA2 and Leica NAK2 are two universal automatic levels meet all the requirements of precision levelling.

Leica's top-class optical quality gives the NA2 & NAK2 a bright high contrast image.

  • push button compensator check
  • endless horizontal drive for left and right handed users
  • coarse and fine focusing knob
  • play-free footscrews
  • optional eyepieces available
  • top-class optics

Leica's top-class optical quality gives the NA2 & NAK2 a bright high contrast image.

Technical Data NA2 / NAK2
Accuracy*

0.7 mm (dependent on staff, technique)

0.3 mm (with parallel-plate micrometer)

Magnification

standard: 32x

FOK73 eyepiece (optional): 40x

Shortest focusing distance 1.6 m
Compensator setting accuracy 0.3''
* Per 1km double run

To improve accuracy a parallel plate micrometer can be fitted over the telescope objective.

The parallel plate micrometer permits direct readings to 0.1mm and estimated readings to 0.01mm. This makes the NA2 and NAK2 an ideal precise level for deformation studies or industrial measuring tasks.

The NAK2 model has an internal glass circle for reading horizontal angles. Combined

with the stadia calculation of distances from staff readings the NAK2 circle adds the application benefit of detail survey work.

Máy thủy bình Topcon AT-G2

at-g_series


at-g2

Độ chính xác Độ chính xác đo cao Ghi chú
±0.3” ±0.7mm/1km Không có du xích
±0.3” ±0.4mm/1km Có du xích


Surveying and Engineering Automatic Levels
ATG4_jobsite5

Topcon's engineering and construction automatic levels are streamlined and more compact than ever. They are lightweight for easy transport and the completely waterproof telescope is effective for all kinds of wet surveying operations.

Angular reading to 10 minutes (AT-G1)
Model AT-G1 has a glass horizontal circle which is graduated in 10 minute divisions (10c divisions) and numbered every degree (one grade) with calibrations from 0° to 360° (0g to 400g). Furthermore, readings are possible through a 25x reading microscope, with only a slight shift of the eye, from the telescope eyepiece. The horizontal circle freely rotates for zero alignment.

ATG 4 waterWaterproof sealed telescope construction
The instrument has a completely waterproof telescope and is therefore ideal for all kinds of wet-surveying operations, in light rain or in tunnels. Only test-approved telescopes are used and dry nitrogen gas is sealed in the telescope tube. This effectively prevents lens clouding and moisture condensation.

2 speed focussing (AT-G1)
Fine and coarse focussing is provided by a coaxial focussing knob, which permits rapid setting and accurate focussing for perfect image at the same time.

Clamp less fine horizontal adjustments
Fine horizontal adjustments are possible at any point through 360° (400g) of the arc, without clamping action. This means that target alignments are greatly speeded up. Furthermore, fine horizontal knobs are available on both sides for very easy and speedy adjustments.

Very short 0.5 meter focussing (AT-G3/G4/G7N)
AT-G3/G4/G7N have a short range setting position of 0.5 meter that is especially suitable for close range work carried out by builders and contractors.

ATG7N_jobsite3Rapid, stable automatic levelling
A time-proven magnetically damped compensator is incorporated for automatic levelling action. It is not affected by fine vibrations and has been proven to have very stable precision, thus speeding up automatic levelling operations and producing accurate results. The Topcon-exclusive automatic levelling system utilises four special mylar ribbons for hanging the magnetic damper compensator. The compensator is therefore not influenced by the magnetic field, as well as having superior resistance to cold, heat and shock.

Rubber eyepiece cap
Sighting through Topcon's AT-G7 is safe for anyone who wears eyeglasses. With their protective rubber eyepiece caps, scratches and abrasions are reduced or eliminated completely.

Specifications of AT-G Series

SPECIFICATIONS

AT-G1

AT-G2

AT-G3

AT-G4

AT-G7N

Telescope
Length (mm)

229

229

230

192

192

Image

Erect

Erect

Erect

Erect

Erect

Magnification

32x

32x

30x

26x

22x

Objective lens (mm)

45

45

40

30

30

Relative brightness

1.98

1.98

1.78

1.33

1.86

Field of view

1°20'

1°20'

1°30'

1°30'

1°30'

Resolving power

2.5"

2.5"

3.0"

3.5"

4.0"

Minimum focus (m)

1.0

1.0

0.5

0.5

0.9

Stadia ratio

100

100

100

100

100

Circular level
Sensitivity (/2mm)

8'

8'

8'

8'

10'

Automatic levelling
Setting accuracy

±0.3"

±0.3"

±0.3"

±0.3"

±0.5"

Compensating range

±15'

±15'

±15'

±15'

±10'

Accuracy (1km double run levelling)
Without optical micrometer (mm)

±0.7

±0.7

±1.5

±2.0

±2.5

With optical micrometer (mm)

±0.4

±0.4

±1.0

-

-

Horizontal circle
Diameter (mm)

90

117

117

117

117

Minimum division

10'(0.1g)

1°(1g)

1°(1g)

1°(1g)

1°(1g)

Weight
Instrument (kg)

2.1

1.8

1.8

1.6

1.6

Plastic carrying case (kg)

1.3

1.3

1.3

1.3

1.3

Designs and specifications here in are subject to change without prior notice. In order to obtain the best results with this instrument, please be sure to review all user instructions prior to operation.

Máy thủy bình Topcon AT-G3

at-g3

 

Độ chính xác Độ chính xác đo cao
±0.3” ±1.5mm/1km
SPECIFICATIONS

AT-G1

AT-G2

AT-G3

AT-G4

AT-G7N

Telescope
Length (mm)

229

229

230

192

192

Image

Erect

Erect

Erect

Erect

Erect

Magnification

32x

32x

30x

26x

22x

Objective lens (mm)

45

45

40

30

30

Relative brightness

1.98

1.98

1.78

1.33

1.86

Field of view

1°20'

1°20'

1°30'

1°30'

1°30'

Resolving power

2.5"

2.5"

3.0"

3.5"

4.0"

Minimum focus (m)

1.0

1.0

0.5

0.5

0.9

Stadia ratio

100

100

100

100

100

Circular level
Sensitivity (/2mm)

8'

8'

8'

8'

10'

Automatic levelling
Setting accuracy

±0.3"

±0.3"

±0.3"

±0.3"

±0.5"

Compensating range

±15'

±15'

±15'

±15'

±10'

Accuracy (1km double run levelling)
Without optical micrometer (mm)

±0.7

±0.7

±1.5

±2.0

±2.5

With optical micrometer (mm)

±0.4

±0.4

±1.0

-

-

Horizontal circle
Diameter (mm)

90

117

117

117

117

Minimum division

10'(0.1g)

1°(1g)

1°(1g)

1°(1g)

1°(1g)

Weight
Instrument (kg)

2.1

1.8

1.8

1.6

1.6

Plastic carrying case (kg)

1.3

1.3

1.3

1.3

1.3

Designs and specifications here in are subject to change without prior notice. In order to obtain the best results with this instrument, please be sure to review all user instructions prior to operation.

 



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