• 5-second accuracy
• 24,000-point internal memory
• Optical plummet
• Serial 9-pin connection
• 9-hour battery life
• Water resistant and dustproof to IP-54
• Illuminated dual LCD display and keyboard
Spesifikasi TOPCON GTS 255 :
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Model |
GTS-255 |
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Telescope |
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Magnification |
30x |
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Resolving power |
3.0" |
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Length: 150mm, Objective aperture: 45mm (50mm for EDM), Image: Erect, Field of view: 1°30' (26m/1,000m), Minimum focus: 1.3m |
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Angle measurement |
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Display resolutions (selectable) |
1" / 5" (0.0002 / 0.001gon) |
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Accuracy (ISO 17123-3:2001) |
5" |
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Method |
Absolute rotary encoder scanning |
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Detecting system |
Horizontal |
2 sides |
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Vertical |
1 side |
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Compensator |
Dual-axis liquid tilt sensor, working range: ±3', Correction unit: 1” |
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Distance measurement |
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Measuring range (under average conditions*1) |
Mini prism |
900m (3,000ft) |
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One prism |
2,000m (6,600ft.) / Under good conditions*2: 2,300m (7,500ft.) |
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Three prisms |
2,700m (8,900ft.) / Under good conditions*2: 3,100m (10,200ft.) |
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Accuracy (D=measuring distance in mm) |
±(2mm + 2ppm x D) m.s.e. |
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Least count in measurement |
Fine: 1mm (0.005ft.) / 0.2mm (0.001ft.), Coarse: 10mm (0.02ft.) / 1mm (0.005ft.), Tracking: 10mm (0.02ft.) |
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Measurement time*3 |
Fine: 1mm: 1.2s (Initial 4s) / 0.2mm: 2.8s (Initial 5s), Coarse: 0.7s (Initial 3s), Tracking: 0.4s (Initial 3s) |
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Interface and Data management |
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Display |
Graphics LCD, 160 × 64dots |
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Keyboard |
Alphanumeric 24keys |
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Control panel location |
On both faces |
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Data storage |
Internal memory |
24,000pts. |
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Interface |
RS-232C |
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General |
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Levels |
Circular level |
10' / 2mm |
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Plate level |
30" / 2mm |
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Optical plummet telescope |
Magnification: 3x, Focusing range: 0.5m to infinity, Image: Erect |
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Dust and water protection (With BT-G1W) |
IP54 (IEC 60529) |
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Operating temperature |
-20 to +50°C (-4 to 122°F) |
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Size / Instrument height |
W184 x D172 x H336mm (W7.2 x D6.8 x H13.2in.) /176mm (6.93in.) from the tribrach dish |
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Weight |
Instrument with battery |
4.9kg (10.8lbs) |
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Plastic carrying case |
3.4kg (7.5lbs), Weight of the carrying case may be slightly different due to specific market. |
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Power supply |
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Battery (BT-G1W) |
Operating time (Fine mode) |
Approx. 27 hours (Single distance measurement every 30 seconds at +20°C / +68°F*4) |
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Approx. 9 hours (Continuous distance measurement at +20°C / +68°F) |
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Battery charger |
Recharging time |
1.8 hours (+10 to +40°C) |