Main Technical Parameters

Technical Parameter

SDJ-02

SDJ-05

SDJ-10

SDJ-20

Telescope

Image

Positive

Positive

Positive

Positive

Magnification Ratio

30×

30×

30×

30×

Effective Aperture of Object Lens

45mm

45mm

45mm

45mm

Angle of View

1^o30'

1^o30'

1^o30'

1^o30'

Shortest Visibility Distance

1.5m

1.5m

1.5m

1.5m

Stadia Multiplication Constant

100

100

100

100

Stadia Addition Constant

0

0

0

0

Resolution

3'

3'

3'

3'

Angle Measuring System

Mode of Angle Measurement

Photoelectric Incremental Reading

Photoelectric Incremental Reading

Photoelectric Incremental Reading

Photoelectric Incremental Reading

Min. Reading

1'  5' 10Selectable

1'  5' 10Selectable

 1 5' 10'Selectable

 1 5' 10'Selectable

Detection Method

H: Both Sides

H: Both Sides

H: Single Side

H: Single Side

V: Single Side

V: Single Side

V: Single Side

V: Single Side

Precision of Angle Measurement

2'

5'

10'

20'

Unit of Angle

DEG MIL GON

DEG MIL GON

DEG MIL GON

DEG MIL GON

Display

LCD Double Side

LCD Double Side

LCD Double Side

LCD Double Side

Compensator

Tilt Sensor

automatic vertical compensation

YES

YES

NO

NO

Range of Compensation

±3'

±3'

Optical plummet

Image

Positive

Positive

Positive

Positive

Magnification Ratio

3×

3×

3×

3×

Angle of View

5^o

5^o

5^o

5^o

Focusing Range

0.5m~∞

0.5m~∞

0.5m~∞

0.5m~∞

Sensitivity of vial

tubular vial

30'/2mm

30'/2mm

30'/2mm

30'/2mm

circular vial

8'/2mm

8'/2mm

8'/2mm

8'/2mm

Ambient Temperature

-20^oC ~ +50 ^oC

-20^oC ~ +50 ^oC

-20^oC ~ +50 ^oC

-20^oC ~ +50 ^oC

Power Supply

Battery

Rechargeable Ni-H Battery

Rechargeable Ni-H Battery

Rechargeable Ni-H Battery

Rechargeable Ni-H Battery

Source Voltage

6V

6V

6V

6V

Duration of Operation

16h

16h

16h

16h

Weight of Instrument

5kg

5kg

5kg

5kg

Dimensions

164×154×340mm