Rangefinder Information

Scanner Applications

The FG21 is used in the following applications:

• Topography & Mining

• Monitoring & Civil Engineering

• Archaeology & Cultural Heritage Documentation

• Architecture & Facade Measurement

FG21 Lasertape Rangefinder

Technical Data

Maximum Operating Range
(depending on the reflection characteristics of the target)
Masonry, stones, etc	2000 m @ daylight 2500 m @ dawn or dusk and at night
Trees, bushes etc.	1500 m @ daylight 2000 m @ dawn or dusk and at night
Reflecting foil	3000 m
Glass reflector prism	20 m to 1000 m (adjustable short range suppression)
Accuracy, typically	± 1 cm
Resolution	1 m
Acquisition Time	typ. 0.5 s (self-adapting between 0.2 sec. and 3sec.)
General Technical Data
Physcial Data
Weight	approx. 1.4 kg with batteries
Dimensions (LxWxH)	185 x 120 x 60 mm
Temperature range	-20°C to +55°C (Operation) -25°C to +70°C (Storage)
Internal power supply	6 Alcaline-Manganese batteries of type "AA"
Battery lifetime	>2000 measurements
Buzzer	internal buzzer can be switched on by service personnel
Sighting Optics
Magnification	6 x 30 monocular
Field-of-view	115 m @ 1000 m
Optical quality	all elements multi-layer coated
Display
4 digit alphanumeric LED display within the field-of view of the sighting optics, automatic brightness control
Laser Data
Type	pulsed semiconductor laser
Wavelength	0.9 µm
Beam divergence	2 mrad, i.e. approx. 20 cm increase of beamwidth per 100 m of range
Laser eye safety class according to IEC60825-1:1993+A1:1997+A2:2001 The following clause applies for instruments delivered into the United States: Complies with 21 CFR 1040.10 and 1040.11 except for deviations pursuant to Laser Notice No. 50, dated July 26, 2001.	Class 1 Laser Product
Optional Features Available on Request
External power supply	10 - 14V DC, 400 mA
Data interface	RS232, 300 Bd to 19200 Bd