Distance measurement, Atmospheric conditions

: ±(2mm + 2ppm ⋅ D) m.s.e.

: ±(10mm + 2ppm ⋅ D) m.s.e. D : Measuring distance (mm)

: 1mm (0.005ft.) / 0.2mm (0.001ft)

: 1mm (0.005ft.)

: 10mm (0.02ft.)

: 10digit : max. display ±999999.9999m

: 1mm : 1.2 sec. (Initial 4 sec.)

: 0.2mm: 2.8 sec. (Initial 5 sec.)

: 0.7sec. (Initial 3sec.)

: 0.4sec. (Initial 3sec.)

(The initial time will be different by a condition.)

: –999.9ppm to +999.9ppm , in 0.1ppm increments

: –99.9 mm to +99.9 mm , in 0.1 mm increments

: Meter / Feet

International feet 1meter = 3.2808398501 ft. US SURVEY feet 1meter = 3.2808333333 ft.

: –20°C to +50°C (–4°F to +122°F)

: Absolute reading

: Horizontal : 2 sides Vertical : 2 sides

: 1"/0.5" (0.5mgon/0.1mgon, 5mmil/2mmil) reading

: 5"/1" (1mgon/0.2mgon, 20mmil/5mmil) reading

20 SPECIFICATIONS

Distance measurement

Measurement range

	Atmospheric conditions
Prism
Prism	Condition 1	Condition 2
	Condition 1	Condition 2

Mini prism	800m ( 2,600ft)	----

1 prism	2,200m (7,200ft)	2,500m (8,200ft)

3 prisms	2,800m (9,200ft)	3,200m (10,500ft)

9 prisms	3,600m (11,800ft)	4,200m (13,800ft)

Condition 1: Sight haze with visibility about 20km (12.5miles) moderate sunlight with light heat shimmer.

Condition 2: No haze with visibility about 40km(25 miles), overcast with no heat shimmer. Measurement accuracy

Fine measurement mode Coarse measurement mode

Least Count in Measurement

Fine measurement mode

Coarse (1mm) measurement mode

Coarse (10mm) measurement mode

Measurement Display

Measurement Time

Fine measurement mode

Coarse (1mm) measurement mode

Coarse (10mm) measurement mode

Atmospheric Correction Range

Prism Constant Correction Range

Coefficient Factor

Ambient Temperature Range

Electronic Angle Measurement

Method

Detecting system

Minimum reading

GTS-821A

GTS-822A

GTS-823A

GTS-825A

Accuracy(Standard deviation based on DIN 18723 )

GTS-821A	:	1" (0.3mgon )
GTS-822A	:	2" (0.6mgon )
GTS-823A	:	3" (1mgon )
GTS-825A	:	5" (1.5mgon )
Diameter of circle	:	71mm

20-2

GTS-822A, GTS-825A, GTS-821A, GTS-822A, GTS-823A, GTS-825A, GTS-823A specifications

Topcon's GTS series of total stations, including the GTS-821A, GTS-822A, GTS-823A, and GTS-825A, are known for their robust features and exceptional precision, catering to the needs of surveying and construction professionals. These instruments blend advanced technology with user-friendly interfaces to enhance productivity in the field.

The GTS-821A model is designed for reliability and accuracy. It offers a measurement range of up to 1,000 meters and delivers precision within ±2 millimeters, making it ideal for jobs requiring fine detail. Key features include a high-speed angle measurement system and a dual-axis compensator that ensures accuracy on uneven terrain.

In contrast, the GTS-822A model takes performance a step further by incorporating advanced optical technologies. It includes a high-performance EDM (Electronic Distance Measurement) that allows for faster measurements with a range extending up to 2,000 meters. This model also integrates a clear display and simple user interface, facilitating easier operation for users of all skill levels.

The GTS-823A represents a perfect blend of portability and advanced functionality. It is lightweight, making it easy to transport between job sites. This model incorporates GPS capabilities, allowing seamless integration with GNSS systems for enhanced positioning accuracy. Its onboard software supports various surveying methods, making it versatile for different applications.

The GTS-825A stands out for its advanced features tailored for high-precision tasks. This model supports wireless communication, enabling real-time data transfer to smartphones and tablets, which enhances collaboration in fieldworks. With an impressive measurement capability, it extends the measurement range and precision, meeting the demands of large-scale projects.

All models in this series share a durable design reputation, ensuring they withstand harsh environmental conditions. Their user-friendly interfaces are complemented by robust software support, providing surveying professionals with the tools they need to optimize their workflows.

In summary, Topcon’s GTS series, including the GTS-821A, GTS-822A, GTS-823A, and GTS-825A, represent the cutting edge of surveying technology, boasting features like extended measurement ranges, high precision, advanced EDM, and GPS integration. These instruments not only enhance productivity but also ensure that professionals can achieve their surveying goals efficiently and effectively. Whether for routine land surveys or complex construction projects, the Topcon GTS series delivers exceptional performance and reliability.

Topcon GTS-823A, GTS-825A, GTS-822A Distance measurement, Atmospheric conditions, Condition

Models: GTS-822A GTS-825A GTS-821A, GTS-822A, GTS-823A, GTS-825A GTS-823A