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Total Station South NTS-312B is a technology tool that combines an electronically between technology theodolite with technology EDM (electronic distance measurement). EDM is an electronic distance measuring instrument that uses electromagnetic waves of infrared light as a carrier wave signal measurement and aided by a reflector in the form of a prism as the target (instrument reflecting infrared light to return to EDM).
Specifications South NTS-312B
Telescope
• Image: Erect
• Magnification: 30×
• Effective aperture: 45mm ( EDM 48mm)
• Resolving power: 4"
• Field of view: 1° 30'
• Minimum focus: 1m
• Stadia ratio: 1 0 0
• Sight distance precision: < 0, 4% D
• Tube length: 154mm
Angle Measurement
• Measuring method: Photoelectric detection by incremental encoder
• Dia of circle ( vertical, horizontal) : 79mm
• Minimum reading: 1" / 5" Selectable
• Detection method Horizontal: Dual
• Vertical: Dual
• Measuring unit: 360° / 400gon/ 6400mil Selectable
• Vertical angle0° : Zenith0° / Horizontal0° Selectable
• Accuracy: 2"
Vial
• Plate vial: 30" / 2mm
• Circular vial: 8' / 2mm
Vertical Compensator
• System Liquid-electric: detection/ plate vial
• Compensation range: ± 3'
• Resolving power: 1"
Optical Plummet
• Image: Erect
• Magnification: 3×
• Focusing range: 0.5m~
• Field of view: 5°
Display
• Type: LCD, Four lines, digital
Data Communication
• Port: RS-232C
On-board Battery
• Power resource: Rechargeable Ni-H battery
• Voltage: DC6V
• Type of battery: NB-20B Battery, NB— 20C: Battery ( Selectable)
• Continuous operation time: 8hrs( small battery) 10hrs( big battery)
Operation Environment
• Operating temperature: -20° ~ + 50 C
Size & weight
• Dimension: 160× 150× 330mm
• Weight ( Exclude Battery) : 5.2kg
