R20 Total Station
Stonex
Manual Total Stations

R20 Total Station

Precise, efficient and easy Total Station

The R20 range is composed of 3 versions, the R20 1000 m model with 2″ angular accuracy, the R20 1000 m model with 1″ angular accuracy and the R20 600 m model with 2″ angular accuracy. The three models offer optimum performance up to 5000 m with prism and 1000 m or 600 m reflectorless. The entire R20 range is equipped with a high-performance, illuminated reticle telescope that provides the best quality of observation, whatever the environmental conditions. The programs on board of these models of total stations make them suitable for any work in construction, cadastral, mapping and staking, through a user-friendly interface. Thanks to the presence of Bluetooth connection, it is possible to connect an external controller, giving the possibility to use a customized field software.

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Key Performance & Features

Advanced Capabilities

1

LIMITLESS DISTANCE MEASUREMENTS

By using a digital phase laser ranging technology, R20 guarantees high accuracy measurements: 1000 m or 600 m (depending on the model) in reflectorless mode and up to 5000 m using a single prism, with millimeter accuracy.

2

FAST, ACCURATE, RELIABLE

Measuring distances with high angular accuracy make any job extremely cost effective and reliable. The wide range of application software allows to complete the Surveyor’s tasks directly in the field.

3

ONE DAY OF CONTINUOUS FIELD WORK

Thanks to the low power consumption circuit design R20 gives the opportunity to continuously work for more than 22 hours.

4

TEMPERATURE PRESSURE

Variations in temperature and pressure have a negative impact on the accuracy of distance measurements. R20 allows setting the values of temperature and pressure to ensure the precision of distance measurements.

Technical Specifications

ANGLE MEASUREMENT

Accuracy¹1" / 2"
Reading systemAbsolute encoder
Angle UnitsDEG 360° / GON 400 / MIL 6.400
Display resolution (selectable)
1" / 5" / 10"0.0001 g / 0.0005 g / 0.001 g0.01 mil / 0.05 mil / 0.1 mil

TELESCOPE

Magnification / Field of view30x / 1°30'
Tube length160 mm
Minimum focus distance1.7 m (5.6 ft)
Reticle illumination4 levels
Objective apertureφ 44 mm
Laser pointerRed light, coaxial

TILT SENSOR

TypeOptoelectronic, dual axis
Compensation range/accuracy± 4.0'/3"

DISTANCE MEASUREMENT RANGE²

Prism mode5.000 m³
Reflective sheet (6cm x 6cm)800 m³
Reflectorless600 m / 1000 m⁴

DISTANCE MEASUREMENT ACCURACY⁵

Prism2 mm + 2 ppm
Reflectorless3 mm + 2 ppm

MEASUREMENT TIME

Prism (Track/Fast/Standard)0.3 / 0.5 / 0.8 sec
Reflectorless≥ 0.3 sec

DISTANCE MEASUREMENT

Distance Unitsm / US-ft / INT-ft / ft-in 1/16
Display Resolution0.001 m / 0.01 ft

LASER PLUMMET

Carrier wave635nm
Accuracy± 1,5 mm @ 1,5 m
Spot2,5 mm @ 1,5 m

LEVEL VIAL SENSITIVITY

Plate level30" / 2 mm
Circular level8' / 2 mm

ENVIRONMENTAL CONDITIONS

Operating Temperature-20°C +50°C
Storage Temperature- 30°C +60°C
Waterproof/DustproofIP65

PHYSICAL SPECIFICATION

Dimensions365 x 195 x 169 mm
Weight including battery and tribrach5.6 Kg

POWER

Battery Voltage/Capacity/Type7.4V / 2600mAh / Li-ion
Operating time (angle measurement)22 hours
Operating time (angle+dist. meas. every 30 s)19.5 hours
Battery charger100 / 240V, charging time 3h

OTHER SPECIFICATIONS

DisplayTwo sides, LCD 320 × 240 Dots / Alphanumeric
Memory> 80.000 points
InterfaceUSB 2.0 / Bluetooth 5.0
Temperature / PressureCustom setting possible

ON BOARD FIELD APPLICATION PROGRAMS

ProgramsData recording and management, Stake out, Offset, MLM, Remote height, Area, Resection, Reference line

1 Standard deviation based on ISO 17123-3

2 Good condition: cloudy, no haze, visibility about 40km, no heat shimmer, breeze. Under optimal conditions on Kodak Grey Card (90% reflective)

3 Class 1

4 Class 3R

5 Standard deviation based on ISO 17123-4