TOPCON GM – 50 SERIES

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TOPCON GM – 50 SERIES

Description

  • Model: GM-52, GM-55
  • Telescope Magnifcation/Resolving power: 30x / 2.5″
  • Minimum Display (selectable): 1″/5″ (0.0002 / 0.001gon, 0.005 / 0.02mil)
  • Accuracy (ISO 17123-3:2001): 2″ (GM-52) / 5″ (GM-55)
  • Dual-axis compensator: Dual-axis liquid tilt sensor, working range: ±6′
  • Collimation compensation: On/Off (selectable)
  • Laser output: Reflectorless mode : Class 3R / Prism/sheet mode : Class 1
  • Measuring range (Under average condition):
    Reflectorless: 0.3 to 500m (1,640ft.)
    – Reflective sheet:
    RS90N-K: 1.3 to 500m (4.3 to 1,640ft.)
    RS50N-K: 1.3 to 300m (4.3 to 980ft.)
    RS10N-K: 1.3 to 100m (4.3 to 320ft.)

    – Mini prisms:
    CP01: 1.3 to 2,500m (4.3 to 8,200ft.),
    OR1PA: 1.3 to 500m (4.3 to 1,640ft.)

    – One prism: 1.3 to 4,000m (4.3 to 13,120ft.)
  • Accuracy:
    Reflectorless:      (2 + 2ppm x D) mm
    – Reflective sheet: (2 + 2ppm x D) mm
    – Prisms:                 (1.5 + 2ppm x D) mm
  • Measuring time:
    Fine:         0.9s (initial 1.5s)
    – Rapid:      0.6s (initial 1.3s)
    – Tracking: 0.4s (initial 1.3s)
  • Operating system: Linux
  • Display / Keyboard: Graphic LCD, 192 x 80 dots, backlight : on/off (Selectable) /Alphanumeric keyboard / 28 keys with backlight.
  • Control panel location: On both faces (GM52) / On single face (GM-55)
  • Internal memory: Approx. 50,000 point
  • Plug-in memory device: USB flash memory (max. 32GB)
  • Interface: Serial RS-232C, USB2.0 (Type A for USB flash memory)
  • Laser-pointer: Coaxial red laser using EDM beam
  • Levels:
    Graphic: 6′ (Inner Circle)
    – Circular level (on tribrach): 10’/2mm
  • Plummet:
    Optical: Magnifcation: 3x, Minimum focus: 0.5m (19.7in.) from tribrach bottom
    – Laser (Option): Red laser diode (635nm±10nm), Beam accuracy: <=1.0mm@1.3m, Class 2 laser product
  • Dust and water protection / Operating temperature: IP66 (IEC 60529:2001) / -20 to +60ºC (-4 to +140ºF)
  • Size with handle:  – GM52: 183(W)x 181(D)x 348(H)mm (On both faces)
                                     – GM-55: 183(W)x 174(D)x 348(H)mm (On single face)
  • Instrument height: 192.5mm from tribrach mounting surface
  • Weight with battery & tribrach: Approx. 5.1kg (11.3lb)
  • Battery: Li-ion rechargeable battery BDC46C
  • Operating time (20ºC): Approx. 14hours

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