Laser sensor tunes in for water detection
An
IDEC Electronics product story
Edited by the Engineeringtalk editorial team
Dec 3, 2004
The innovative SA1W sensor is able to detect any liquid or paste containing water molecules - without contact.
When a customer in the packaging industry wanted to detect breaks in a line of glue laid down for sealing packing material, he found he had a problem.
Similarly, a contact lens manufacturer wished to detect if solution had failed to be impregnated in contact lens blister packs.
In both cases they were advised to use the SA1W.
Using a laser beam tuned to the resonant frequency of an H2O molecule, the SA1W sensor is able to detect any liquid or paste containing water molecules - without contact.
Capable of detecting liquids through clear or translucent containers of any colour, the SA1W uses a small diameter laser beam for precise detection and has a visible red spot for easy targeting and alignment.
The high power type has successfully been used to sense the level of liquids through dark thick material; one application was to detect the level of alcohol based drinks in bottles where the air space in the bottle has to be closely controlled to prevent the stoppers blowing off.
The high power SA1W handles this situation with ease even where labels are stuck on both sides of the container/bottle.
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