400m Prismless Total Station DTM622R4

1.Laser beam focused in non-prism mode for 400m distance. 2.Strong software to help to achieve the measurment. 3.RS232 or USB ports for option. 4.Good laser to protect the eyes of the surveyor. 5.Large LED display

SPECIFICATION:

Telescope

Image                           Positive

Magnification                     30×

Effective aperture                  48mm

Distinguish ability                 3.75″

Minimum focus                   1m

Stadia ratio                       100

Sight distance precision             ≤0.4%D

Tube length                       172mm

Angle Measurement  

Measuring method                  Absolute encoder

Diameter of circle (vertical, horizontal)  79mm

Minimum reading                   1″

Measuring unit                     360°/400gon/6400mil Selectable

Vertical angle0°                  Zenith0°/Horizontal0°Selectable

Accuracy                          2″

Distance Measurement

Single prism (under fair weather condition)

     DTM622R4 : 2.5km

Triple prism (under fair weather condition)

                                    DTM622R4 : 5km

No prism  (under fair weather condition)   white flour  90% reflectivity

                                 DTM622R4 : 400m

Display                            Max:999999.999m Min:1mm

Unit                         

                                      m /ft Selectable

Accuracy                        prism:±(3mm+2ppm·D);

                               no prism:±(5mm+3ppm·D)

Measuring time                     Fine single shot:  3S

                                  Tracking:   0.8 S

Meteorological Correction             Manual input, Auto correction

Reflection prism correction            Manual input, Auto correction

Vial

Plate vial                          20″/2mm

Circular vial                       8′/2mm

Vertical Compensator

System                       Single axis or Double axis photoelectric tilt sensor

Working ability                       ±3′

Resolving power                      1″

Others

Plummet                           optical or laser plummet

Image                              Erect

Magnification                        3×

Focusing range                     0.3m~∞

Field of view                         5°

Display    

Type                               Double sides,LCD display

Data Communication

Port                              RS-232C,SD Card,Bluetooth  Selectable

On-board Battery

Power resource                       Li- battery

Voltage                              DC7.4V 4000mAh

Continuous operation time              Angle measurement: 20 hours

                                    Distance measurement: 8 hours

Operation Environment    

Operating temperature                   -20°~+50ºC

Size & weight    

Dimension                          174mm×207mm×383mm

Weight                               6.5kg