KB006 What is the measuring accuracy?

The measuring accuracy of Dimetix sensors is specified with a statistical confidential level of 95.4% (corresponding to ISO 1938-2015). This is equivalent to ±2σ or two times the standard deviation σ (see the figure).

The following distance errors are considered in this measuring accuracy as well:

  • Distance error due to temperature influence (Sensor temperature)
  • Linear error

It is important to realize that the sensors do not compensate the humidity, the air pressure or the air temperature. If the environmental conditions differ from 60% relative humidity, 953mbar air pressure or 20°C air temperature, the accuracy can be influenced if the measuring distances are longer than 150m. The influence of these environmental conditions is described in H. Kahmen & W. Faig: “Surveying”, (1988).