Informations about user instructions and warnings
42
To ensure laser safety, all three openings are equipped with a magnetic
switch. This kind of Hall sensor operates by detecting a magnetic field
caused by a magnet affixed to the opening. When one of the openings is
opened, the magnet affixed to the opening moves away from the magnetic
sensor and the magnetic field weakens. In such a case the laser operation is
stopped and the laser beam shutter is closed. Thus, it is possible to use the
laser only when the magnetic switch detects that all openings are closed.
The longest possible distance for the magnetic switches to work is
approximately 5 mm and the moving distance of the openings before actual
opening is much longer than this. Hence even the slightest gap in the door is
impossible during laser operation. The mechanical structure of the switches
is presented in the following pictures.
Magnet
Magnetic sensor
Picture 3.
Magnetic switch on the lid.
Summary of Contents for EnVision
Page 1: ...EnVision Multilabel Reader 2104 9030 02 March 2008 INSTRUMENT MANUAL ...
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Page 11: ...1 Chapter 1 Introduction ...
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Page 15: ...5 Chapter 2 Functional description ...
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Page 45: ...35 Chapter 3 Information about user instructions and warnings ...
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Page 59: ...49 Chapter 4 Routine maintenance ...
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Page 75: ...65 Chapter 5 Specifications ...
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Page 86: ...Specifications 76 ...
Page 87: ...77 Chapter 6 Quality information ...
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Page 93: ...83 Chapter 7 Glossary ...
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Page 105: ...95 Chapter 8 Installation ...
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