Proximity switch
  . Proximity switch(1)
  . Proximity switch(2)
  . Proximity switch(3)
 

 

 

¡¤Output stage circuit diagrams
¡¡¡¡The dashed line express transistor
¡¤The general characteristics of proximity switch
¡¡.correction coefficient  
¡¡The correction chart of pick-up distance for non-iron metal, (But the correction factor has no an absolute value.) The effect of the electric plating (reference data). The percentage of sensing ¡¡distance of plating and unplating sensing objects.
Basic material
Iron
Bronze
The type of plating
Unplating
100
100
Zn from 5 to 15¦Ì
From 90 to 120
From 95 to 105 From 95 to 105 From 95 to 105 From 95 to 105
Cd from 5 to 15¦Ì
From 100 to 110
From 95 to 105
Ag from 5 to 15¦Ì
From 60 to 90
From 95 to 105
Cu from 10 to 15¦Ì
From 70 to 95
From 95 to 105
Cu from 5 to 15¦Ì
-----
From 95 to 105
¡¡
Cu (from 5 ¡¡to 10¦Ì)+Ni ¡¡(10 To ¡¡20¦Ì)
From 75 to 95
------
¡¡
Cu (from 5 ¡¡to 10¦Ì)+Ni ¡¡(10¦Ì) ¡¡+Cr(0.3¦Ì)
From 75 to 95
------
¡¡.Response frequency
¡¡¡°Reponse frequency¡± refers to the frequency of outputs from the proximity switch
¡¡per second in response to the movement of each target when brought¡¡closer to
¡¡the switch.The method of measurement is outlined below.
¡¡.To increase sensing speed of the metal object with gear shape, the size of the
¡¡sensing object should be bigger than the standard object. In the meantime, there
¡¡should have enough pace between two gears (as shown in above figure). The
¡¡response frequency will be reduced. If the width of gear face was decreased and
¡¡the length of gear was narrowed.

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