T
ECHNICAL
R
EFERENCE
M
ANUAL
4 Technical data
4.1 Measuring accuracy
The measuring accuracy corresponds to the ISO-recommendation ISO/R 1938-1971 with a
statistical confidence level of 95.4% (i.e. ± twice the standard deviation
σ
,
refer to
diagram on the right). The typical measuring accuracy relates to average conditions for
measuring. It is ±1.0mm for the FLS-C(H) 10, ±1.5mm for the DLS-C(H) 15 and ± 3.0mm
for the DLS-C(H)/FLS-C(H) 30 valid in the tracking mode.
Maximum deviation may occur under unfavorable conditions such as bright sunlight or
when measuring to poorly reflecting or very rough surfaces. Measuring accuracy may
deteriorate by approximately ±0.02mm/m for distances above 30m.
The DLS-C(H)/FLS-C(H) does not compensate changes of atmospheric environment. These
changes can influence the accuracy if measuring long distances (>150m) under conditions
very different from 20°C, 60% relative humidity and 953 mbar air pressure. The influences
of the atmospheric environment are described in
B.Edlen: “
The Refractive Index of Air, Metrologia 2
”, 71-80 (1966)
Distance Laser Sensor
Page 14/41
99.7%
95.4%
Summary of Contents for DLS-C 15
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