Panasonic HL-C2 Series User Manual page 217

For measuring conditions, refer to "8-2 Sensor Head Specifications" - "CHECK in specifications"..
*1 Use the external ND filter (optional) in case the amount of reflected beam is too large on
Specular Reflection installation.
*2 The measurement range is limited between +0.5 and +5.0mm (in case the sampling cycle is
20µs at diffuse reflection), between +0.5 and +5.0mm (in case the sampling cycle is 20µs at
specular reflection), between +4.7 and +5.0mm (in case the sampling cycle is 10µs at diffuse
reflection), or between +4.6 and +5.0mm(in case the sampling cycle is 10µs at specular
reflection).
*3 The figure shows the value at measurement center distance. It is determined by 1/e
（ approximately 13.5% ） of center beam intensity. The reflectance around the detecting point
may be higher than at the point due to leak light outside the specified area, and this may affect
the measurement value.
*4 The minimum resolution is 0.25µm while the sensor head is connected to the controller that is
not subject to "Foreign Exchange and Foreign Trade Law".
*5 Variance is ±0.03 ％ F.S. or less depending on the ambient illuminance.
8-17
Chapter 8 Specifications
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8