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Laser Tracker

Vantage

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FARO® Knowledge Base

Key Components of the Vantage Laser Tracker

Key components of the Vantage are the Weather Station, the two Angular
Encoders and the Absolute Distance Measurement (TruADM) system.
 
Weather Station
The Weather Station monitors the temperature, pressure, and humidity at the location of the sensor. For the ADM system, the phase shift of the laser beam is a function of the frequency of the reference oscillator and the prevailing environmental conditions. Because the ADM depends on current environmental conditions to calculate the speed of light and convert the measured waves into a distance, the accuracy of the temperature, pressure, and humidity sensors must be established during factory calibration.
 
Temperature Sensor
Calibration of the remote temperature sensor for the Vantage is performed at the factory by comparing its readings to a NIST (National Institute of Standards and Technology) traceable precision standard temperature sensor.
 
Pressure Sensor
Calibration of the pressure sensor in the Vantage is performed at the factory by comparing its readings to NIST traceable precision standard pressure sensor.
 
Humidity Sensor
Verification of the humidity sensor in the Vantage is performed at the factory by comparing its readings to an independent relative humidity sensor.
 
TruADM
TruADM is FARO's Absolute Distance Measurement system that uses patented predictive algorithms to compensate for the acceleration and velocity of a moving target, such as the SMR. Calibration of the ADM frequency oscillator is performed using the cesium clocks within the Global GPS Network. The ADM System is then factory compensated using a reference interferometer. After the ADM System completes factory compensation, it is compared against an interferometer using the process defined in the American Society of Mechanical Engineers (ASME) B89.4.19 System Calibration. The interferometer used during these procedures is certified to NIST or other international recognized standards.
 

Keywords: Key Components , Laser Tracker, Vantage, Weather Station, Temperature Sensor, Pressure Sensor, Humidity Sensor, TruADM