1. AT901. Metrological Instruments.

Leica Absolute Tracker - AT901

The Leica Geosystems Absolute Tracker is a portable measurement system boasting a laser beam that accurately takes measurements in a spherical volume of up to 160 m.

The Absolute Tracker can detect 3D coordinates in 3 ways : 1- with a reflector positioned on CCR; 2- tracking a Leica T-Probe and T-Mac, a wireless "walk-around " contact sensor; 3- tracking a Leica T-Scan, a contactless high-speed laser scanner. The choice of measurement method depends on the application From prototyping, reverse equipment engineering and coupled objects to automotive, aviation and aerospace industry, the users of Leica Geosystems systems range from large corporations to small and medium enterprises. 

Since the introduction of the world’s first laser tracker in 1990, we have taken high-accuracy inspection to groundbreaking levels. With the Absolute Tracker, we’ve done it again.

Leica Absolute Tracker 901 - Basic 
If your application requires positioning machines, fixtures or jigs, or for the  installation and alignment of machine tools, rolling mills, presses or gantry based machines, the right Tracker for you is the Leica AT901-Basic. it works with a reflector only and it performs enhanced measurements with a typical measurement volume of up to 160 m, which is supplied with the Leica Absolute Interferometer and PowerLock technologies.

Leica Absolute Tracker 901 - Mid Range
Coupled with the Leica T-Scan, T-Probe or T-Mac, the Leica AT901-MR gives you a measurement volume of up to 18 m. It can also be used with a corner cube, in which case its measurement volume goes up to 50 m. The sensor is designed for sizeable objects and comes with our Leica Absolute Interferometer and PowerLock technologies. 

Leica Absolute Tracker 901 - Long Range 
A groundbreaking laser for aeronautical, aerospace and other precision measurements such as turbine blades assessment and alignment of industrial equipment. It provides hand-held wireless probing (T-Probe), hand-held contactless scanning (T-Scan) and full machine movement check (T-Mac) in a volume of up to 30 m. It can be used even with a corner cube, in where its typical measurement volume exceeds 160 m. This is the laser tracker that sets new standards when used with the Leica Absolute Interferometer and PowerLock and is still the best-selling laser tracker 6DoF in the world. 

Features and Benefits

PowerLock features:  
For the first time in the history of laser trackers the laser beam shifts towards the user and not vice versa. - Combining the absolute measurement of ADM with the almost instantaneous update rate of the interferometer, the AIFM (absolute interferometer) stands out as the most precise, stable and technologically advanced measuring tool ever produced by Leica. 

- No need to wait for the tracker to block
. Simply catch the beam to take measurements with no further delays. Whether you are using a reflector, Leica T-Probe, Leica T-Scan or the Leica T-Mac, the AIFM can instantly re-establish the broken laser beam and start measuring the moving target directly.  - Robust Structure, extremely high thermal stability, smooth internal design and tracking sensor head that does not heat up.  

- Continuous operation to perform in harsh industrial conditions, without having to make frequent compensation. the Leica Absolute Tracker AT901 simply requires calibration to ' year. – The portable CMM with 6 degrees of freedom is available as an optional. 

The only technologically advanced portable CMM system that can probe like a fixed CMM, scan like a laser scanner and perform tracking in automated applications: all in one system.  - lightweight design and compact size weighting only 22 kg and a length of 62 cm. 

- Easy to carry and install (one-man job), it fully complies with safety regulations, the entire system can be easily carried in a mid-size station wagon.

ADM/IFM with small diameter beam. Benefit: You can use 0.5 '' reflectors throughout the measuring range.  

Versatile installation. Benefit: it can be installed vertically or horizontally, ensuring versatility in measurement volume. * **  * typical results within specifications. ** Cannot be used with the T-Cam in the horizontal position. 

Leica absolute Tracker AT901-B 
absolute Interferometer: YES 
volume typical measurement: 160 m 
compatible with T-Products: NO 
Max. volume measurement with T-Products: Not available 

Leica Absolute Tracker AT901-MR 
Absolute Interferometer: YES 
Volume typical measurement: 50 m 
Compatible with T-Products: YES 
Max. volume measurement with T-Products: 18 m 

Leica Absolute Tracker AT901-LR 
Absolute Interferometer: YES 
Volume typical measurement: 160 m 
Compatible with T-Products: YES 
Max. volume measurement with T-Products: 30m