Product Description

Working principle of CH-8501 micro sensor:

Photoelectric sensors are controlled by converting changes in light intensity into changes in electrical signals.

In general, photoelectric sensors are composed of three parts: transmitter, receiver and detection circuit.

The transmitter aims at the target to emit a light beam, which generally comes from a semiconductor light source, 

a light emitting diode (LED), a laser diode and an infrared emitting diode. The light beam is emitted continuously or changes the pulse width.

 The receiver consists of a photodiode, a phototransistor and a photocell. 

In front of the receiver, optical components such as lenses and apertures are installed.

 Behind it is the detection circuit, which can filter out the effective signal and apply the signal.

Product Parameters

 CH-8501 micro sensor parameter overview:

Voltage range: 10~30VDC

Maximum current consumption (no load): 30 mA

Current consumption (typical): 20 mA

Voltage drop: <1.8VDC

Output function: light/dark operation

Output circuit: NPN

Output current: <100 mA

Type: background suppression

Light source: pulse PinPoint LED

Sensing distance Tw: 25~120 mm

Detection range Tb: 5~120 mm

Sensing range Tb: 5~25 mm

Alignment/lens indicator: indicator light flashes

Indicator light: LED yellow

Sensing distance adjustment: mechanical, 5 turns

Focus distance: 35~45 mm

Beam diameter: Focus 2 mm

Product Photos