Mô tả

• 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