Model

DTM312A,DTM312BDTM315A,DTM315B

DTM322A,DTM322BDTM325A,DTM325B

Telescope

Length

150mm

Magnification

30X

Image

Erect

Shortest sighting dictance

1.0m

Additive constant

0

Objective lens aperture

φ48

Resolving power

3.75”

Field of view

1°30’(26m/1000m)

Stadia proportion

100

Reticle illumination

Provided

Angle measurement section

Horizontal angle panel

Photoelectric incremental rotary encoder scanning, adopt diametrical detection

Vertical angle panel

Photoelectric incremental rotary encoder scanning, with absolute 0 index point

Minimum display

1”,5”,10”

Accuracy

2”,5”,10”

Compensator

Type

Single axis liquid tilt sensor

Range

±3’

Accuracy

±1”

Display resolution

According to angle display resolution

Distance measurement section

Measureing range

Average weather condition, visibility about 23.5km

Single prism

800m

1400m

Three prism

1200m

2200m

Minimum display

Accuracy measurement mode: 1mm

Track mode: 10mm

Accuracy

±(3mm+2ppm?D) ±(5mm+5ppm?D)

Measuring time

Accuracy measurement mode

3SECOND

Track mode

0.8SECOND

Display

Display equipment

Double sides 20-digit, 4-line dot matrix LCD panel with background illumination

Horizontal angle display range

0°~359°59’59”

Vertical angle display range

0°~359°59’59” or 0°±89°59’59”-999.99%~999.99%

Applied measuring module

Coordinate measuring module

Offset measurement module

Laying-out

Missing line measurement module

Remote elevation measurement module

Memory≥4,000dots

Measuring mode

Horizontal angle

Left angle, right angle, set mode

Vertical angle

Zenith 0°, horizontal 0°, horizontal 0°±90°,slope%

Measure time

?Less than 0.5 second

Angular unit

degree,gon,mil

Others

Level sensitivity

Plate level:20”/mm,30”/mm

Circular level:8’/2mm

Optical plummet

Image:Erect

Magnification:3X

Shortest focus:0.5m

Data output

Asynchronous serial in RS-232

Size

150X165X335mm

Height

232mm

Weight

6.2kg

Power supply

Rechargeable battle:BDC3000mAh,7.2v(option)

Battery working time

Distance measureing time:6 hours

Angle measuring time:12 hours

Recharger:650mA/5hours(option)

Note:A with compensator  B without compensator