Chongqing Gold Mechanical & Electrical Equipment Co., Ltd

Chongqing Gold Mechanical & Electrical Equipment Co., Ltd is specialized in manufacturing and developing of Geophysical Exploration Instrument such as Resistivity Meter, IP Instrument, Resistivity Image, Seismic Instrument, Electromagnetic Instrument, Borehole Camera, Borehole Logging System, Water Level Meter; Borehole Drilling Equipment including Core/ Water Well/ Tunnel/ Engineering/ Anchor Drilling Rigs&Accessory and Geodetic Surveying Instrument(GNSS RTK System, Total Station, GIS Mapping and Echo Sounder.

GDM-622R4 Total Station Auto Error Elimination Total Station

GDM-622R4 Technical Parameter

Telescope

Image: Erect

Magnification: 30×

Effective aperture: 48mm

Resolving power: 3.75″

Minimum focus: １ｍ

Stadia ratio: 100

Sight distance precision: ≤0.4％D

Tube length: 172mm

Angle Measurement  

Measuring method: Absolute Coding

Diameter of circle (vertical, horizontal): 79ｍｍ

Minimum reading: 1″、5″、10″Selectable

Measuring unit: 360°／400gon／6400mil Selectable

Vertical angle: ０° Zenith０°／Horizontal０°Selectable

Accuracy: 2″

Distance Measurement

Single prism: (under fair weather condition)

GDM-622R4: 2.5km

Triple prism: (under fair weather condition)

GDM-622R4: 5km

Codak gray card(under fair weather condition) white flour 90% reflectivity

GDM-622R4: 00m

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

Plate vial: 20″/2mm

Circular vial: 8′/2mm

Vertical Compensator

System: Single axis, double axis liquid electronic sensor compensation

Compensation range: ±3′

Resolving power: １″

Optical Plummet

Image: Erect

Magnification: 3×

Focusing range: 0.3m～∞

Field of view: 5°

Display    

Type: LCD, Four lines, digital

Data Communication

Port: RS－232C,SD Card,Bluetooth  Selectable

On-board Battery

Power resource: Rechargeable Ni-H battery

Voltage: DC7.2V

Continuous operation time: BDC 3000mAh

Angle measurement: 20 hours

Distance measurement: 8 hours

Operation Environment    

Operating temperature: －20°～＋45℃

Size & weight    

Dimension:180mm×175mm×355mm

Weight: 6.5kg

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Contact Information

Pls contact me if you are interested

Elaine Wang(Sales Manager)