• センサ、タッチセンサの日本語ページ
  • sensor,touch sensor English site

Term definitions

Proximity sensor Term definitions

Go back to the list of "all products"

Detection distance

The distance when the standard detection target moves perpendicular to the detection surface, approaches the proximity sensor, and engages it.

検出距離

Hysteresis

The difference between the following distances: the distance at which the sensor switches on (operation) when the detection target approaches the detection surface and the distance when the sensor switches off (reset) when the detection target moves away.

Standard detection target

In general, a square metal object (with the thickness of one mm) with prescribed sides to match the shape of each sensor. Configure the detection distance with this target as the standard detection target.
Furthermore, in the case of a proximity sensor, if the detection target becomes smaller, detection distance also becomes smaller, and the detection distance also changes due to material, surface processing (plating), and so on.

Set distance

The distance for stable detection in consideration of temperature changes, voltage changes, aging, and other changes in the specified environment that change the detection distance. When you install a proximity sensor, set it near the detection target so that the distance between them is within the set distance.

Detection area diagram

The diagram indicates the operation area when the standard detection target runs parallel to and approaches the detection surface. The operation standard position of the detection target is section A of the detection target.
The positional relationship of the operation is bilateral.

検出領域図

Operation configuration

Normally open (NO) sensors change their output to on (operation) when the detection target is detected, and normally closed (NC) sensors change their output to off (reset) when the detection target is detected. Select the operation configuration in accordance with your usage.

Output (open collector)

The collector of the output transistor (NPN or PNP) is an open type and can open and close currents of the rated load current and lower.
Be aware that if the load (between Vcc and OUT) short-circuits, and the proximity sensor is switched on, the output transistor burns out.
When you use it as a voltage output type, connect a load resistance externally between Vcc and OUT, and use the voltage between GND and OUT as the control signal.

出力(オープンコレクタ)

 

 

  • Back
Go to page top