Topcon Total Station GPT-3102N

Topcon Europe Positioning is pleased to announce the release of a Total Station Series with a new, advanced technology laser for non-prism distance measurement. The GPT-3100N Series offers a major leap forward in Non-prism measurement performance in a construction site surveying Total Station.

The GPT-3100N Series will replace the GPT-3000N Series. Four models of different angle accuracy specification are available, 2”, 3”, 5” and 7”, all but the 7” model having a dual axis compensator.

The new “Multi-pulse” laser system uses multiple pulsed laser beams emitted at a constant frequency, to measure distance. It offers increased measurement performance with pin-point measurement beam, extended range, improved accuracy and lower power consumption.

• Non-prism distance measurement range of 350 meters
• Non-prism distance accuracy +/- 3mm +2 ppm
• Laser Class 1M (Safe laser with narrow beam)
• On board battery (BT-52QA) operating time 5 Hours.

The features and software of Topcon’s GPT-3100 Series provide ultimate flexibility in many field applications such as:

• Topographic Surveys
• City Elevation Work
• Forestry Survey
• Quarry Surveys
• Mining surveys
• Accident Investigation
• As-built site surveys
• Site setting-out
• Engineering surveys

• Visible Laser Pointer
• Toughest Durability
• Simple Operation
• 24 Key Keyboard
• Large Internal Memory
• Dual-Axis Compensator
• Point Guide System
• "Multi-pulse" Reflectorless

Specifications of the GPT-3100N
SPECIFICATIONS GPT-3100N Telescope:   Length 150 Millimeters Objective lens Diameter 45mm (ED:50mm) Magnification 30X Image Erect Field of view 1°30’ Resolve power 2.8" Min. Focus Distance 1.3 meters     Measurement range   1 Prism 3,000 meters (9,900ft) Mini Prism 1000 meters (3,280ft) Non-Prism mode 1.5-350m (5-1148ft)     Measuring accuracy   Prism Mode ±(2mm+2ppmxD*)m.s.e. fine, ±(7mm+2ppmxD*)m.s.e. coarse Non-prism mode ±(3mm+2ppm) m.s.e. fine, ±(10mm) m.s.e. coarse Minimum reading 0.2mm(0.001ft.) / 1mm(0.005ft) fine, 1mm(0.005ft) / 10mm(0.02ft.) coarse, 10mm(0.02ft.) tracking Measurement time 1mm:1.1 sec.(Initial 2.5 sec.) fine 0.2mm:1.5 sec (Initial 3.0 sec.) fine 0.8 sec.(Initial 2.5 sec.) coarse 0.5 sec.(Initial 2.5 sec.) tracking Measurement time (non prism) (up to 100m. At longer distance and/or poor reflective surface  time will be longer) 1mm:1.7 sec.(Initial 3.0 sec.) fine 0.2mm:2.6 sec (Initial 3.5 sec.) fine 1.0 sec.(Initial 2.0 sec.) coarse 0.4 sec.(Initial 2.0 sec.) tracking     Angle measurement   Method Absolute Detection: GPT-3102N/3103N/3105N GPT-3107   2 sides horizontal, 2 sides vertical 1 side horizontal, 1 side vertical Minimum reading: GPT-3102N/3103N/3105N GPT-3107N   1"/5" arc sec, 0.2/1 mgon 5"/10" arc sec. 1/2 mgon Accuracy: GPT-3102N GPT-3103N GPT-3105N GPT-3107N   2" arc sec (0.6 mgon) 3" arc sec (1 mgon) 5" arc sec (1.5 mgon) 7" arc sec (2 mgon) Diameter of circle 71 Millimeters     Tilt correction   Type Single or Dual Axis (GPT-3107N: single) Compensating ± 3’ Range correction unit 1" arc sec, 0.1 mgon     Environmental   Circular level sensitivity 10’ /2mm Plate level sensitivity 30" /2mm/40”/2mm (GPT-3107N) Optical plummet 3x Magnification, 0.5m to infinity Focusing Range, Erect Image, 5° Field of View     Laser pointer  LD (Visible Laser) light source, 690nm wave length, 1mW Maximum output, Class 2 (IE Publication 825) Class II (FDA/BHR 21 CFR 1040) class Dimensions (HxWxL) 336(H) x 184(W) x 174(L) mm 13.2(H) x 7.2(W)  x 6.9(L) inches Instrument Weight (with battery) 5.3 kg (11.6 lbs) Case weight 3.4 kg (7.5 lbs) Dust/Water protection IP66 rating Operating temperature -20° to +50° Celsius, -4° to +122° Fahrenheit     Power   Source NiMH Battery BT-52QA Output voltage DC 7.2 volts Capacity 2700mAh Approximate battery life (when fully charged at 20°C) 5.0 hours including distance measurement, 45 hours Angle measurement only     Battery Charger   ID BC-27 Input Voltage AC100-240 Volts Frequency 50/60 Hertz Recharging Time 1.8 hours Operating temperature +10° to +40° Celcius, +50° to +104° Fahrenheit