Panasonic HL-C2 Series User Manual page 229

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 +0.0 and +50mm (in case the sampling cycle is 20µs
at diffuse reflection), between +0.0 and +42mm (in case the sampling cycle is 20µs at specular
reflection), between +36 and +50mm (in case the sampling cycle is 10µs at diffuse reflection),
or between +36 and +42mm (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 Variance is ±0.03 ％ F.S. or less depending on the ambient illuminance.
*5 It does not work properly in case connected to the controller ver.1**.
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Chapter 8 Specifications
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