ET2A is a high precision electronic theodolite. This device has 2 “angle measurement accuracy and 30x magnification effect to meet various of working requirement.
Angle
Measurement |
|
Measuring Method |
Absolute encoder |
Diameter |
79mm |
Min. Reading |
1″, 5″,10″ |
Measuring Unit |
360°,400gon |
Vertical Angle 0° |
Zenith 0 °, Horizontal 0 ° |
Accuracy |
2 ″ |
Telescope |
|
Image |
Erect |
Magnification |
30x |
Effective Aperture |
47mm |
Resolving power |
3.75″ |
Field of View |
1°30″(26mm/1000m) |
Min. Focus |
1.5 m |
Stadia Ratio |
100 |
Tube Length |
169mm |
Compensator |
|
Electronic Tilt Sensor |
Vertical compensation |
Compensator Range |
±3′ |
Resolving Power |
6 ″ |
Vial |
|
Plate Vial |
30″/2mm |
Circular Vial |
8 ′/2mm |
|
|
Display |
|
Type |
Two sides LCD |
|
|
Onboard battery |
|
Power Resource |
Rechargeable Li-on battery |
Voltage |
DC 7.4 V |
Operation Time |
BDC 1600 mAh (About 20 hours) |
Laser |
|
Length of the Wave |
635 nm |
Power |
10 mW |
Effective Range |
250 m |
Position Error |
≤5″ |
Voltage |
DC 3.3 V |
Working Temperature |
- 10 °~+ 45 ° |
Others |
|
Storage Temperature |
- 10 °~+ 45 ° |
Dimension |
180 x 166 x 355 m |
Weight |
5 Kg |