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	Model: RTS-820A series

	General introduction:

Overall Water & Dust Proof

All significant parts are protected by tight rubber rings. With reliable waterproof, you

are free to operate your job no matter in rain or desert.

Road Design Measurement

With straight line, arc, smooth curve and point, easy to input data and design road.

MEASUREMENT PROGRAM

l AREA MEASUREMENT

l REMOTE HEIGHT MEASUREMENT

l HIDDEN POINT MEASUREMENT

l ROAD DESIGN AND STAKE-OUT

l COGO PROGRAM

l SURVEYING & ORIENTATION

l ARCHITECTURAL AXES STAKE-OUT

l FREE STATION

l STAKE-OUT

l REFERENCE LINE/ARC

l MISSING LINE MEASUREMENT

	RTS-822A/825A		RTS-822R³/825R³
DISTANCE MEASUREMENT
single prism	2.0km		5.0km
non-prism	--		300m 400m (opt.condition)
accuracy	±(2+2ppm)
digital display	max: 99999999.999, min: 1mm
measuring time	fine:1.2s, normal:0.7s, tracking:0.4s		fine:0.7s, normal: 0.7s, tracking:0.3s
measurement system	basic frequency: 60MHZ
meteorologic correction	input the parameter adjusted automatically
atmospheric refraction & earth curvation correction input the parameter adjusted automatically(k=0.14/0.2)
prism constant	input the parameter adjusted automatically
temperature & pressure correction		manual input		auto correction
ANGLE MEASUREMENT
measuring method	absolute encoding
raster disk diameter	79mm
minimum reading	1” / 5” optional
accuracy	2” / 5” optional
detection method	horizontal: dual, vertical: dual
measuring unit	360°/ 400gon / 6400mil
Vertical angle 0°	zenith 0° / horizontal 0°
TELESCOPE
image	erect
length	154mm
effective aperture	telescope:45mm, distance meter: 50mm
magnification	30X
field of view	1°30”
resolving power	3”
min.focuing distance	1m
AUTO COMPENSATOR
system (liquid electric detection)	vertical axis		Dual-axis
range	±3’				±4’
accuracy	1”
LEVEL SENSITIVITY
plate vial	30”/20mm
circular vial	8’/2mm
OPTICAL PLUMMET (OPTION – INTERNAL LASER PLUMMET)
image	erect
magnification	3X
focusing range	0.3m ~ ∞
field of view	5°
OTHERS
mini-B port	NO		YES
SD card	NO		YES
internal memory (fixed & removable)	>10,000 points/>20,000 coordinates
display type	dual sides, alphanumeric keyboard, LCD, matrix graphic
operation environment	-20℃ ~ +50 ℃
power supply	rechargeable Ni-H battery
voltage	DC 6V
water & dust proof	IP66
non-stop operating time (angle and distance)	8 hours		16 hours

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