Question
What are modulated and non-modulated of Photomicrosensors Used for Industrial Equipment?
Answer
The following table shows the sensing method and characteristics for modulated and non-modulated light.
Non-modulated | Modulated | ||
Sensing method | Method used to detect light steadily emitted by the emitter element | Method used to detect light emitted in pulses by the emitter element | |
Characteristic | Cost | Lower than modulated models | Higher than non-modulated models |
External light interference | Susceptibility to ambient light | Resistant to ambient light |
Standard Sensors for Detecting Ferrous Metals under Standard Conditions