Model

DTM-122A

DTM-125A

Telescope

Length

150mm

Objective lens aperture

φ48mm

Magnification

30X

Image

Erect

Field of view

1°30(26m-1000m)

Resolving power

3.75

Minimum Focus

1m

Stadia proportion constant

100

Distance Measurement

Single Prism

1800m

Triple Prism

2600m

Accuracy

±(3mm+2ppm.D)

Angle measurement

Horizontal angle panel

Photoelectric incremental rotary encoder scanning,

adopt diametrical detection

Vertical angle panel

Photoelectric incremental rotary encoder scanning,

with absolute 0 index point

Accuracy

2 second

5second

Minimum reading

1second/5 second/10 second

Measuring time

Accuracy measurement mode

2 seconds

Track mode:

0.8 seconds

Compensator

Type:

Single axis liquid title sensor

Range:

±3'

Accuracy

±1"

Others

Level sensitivity

Plate level                       30 second/2mm

Circular level                     8 minut/2mm

Plummet

Optical pummet

Data output

Asynchronous serial in RS-232/USB

Weight

6.2kg

Power supply

Rechargeable battery BDC3000mAh 7.2v (Li-Battery)

Battery working time

8hours(DistanceMeasurement) 20hours(Angle Measurement)

Working temperature range

-20°C+45°C