Fiber Optic Sensor

Overview
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Fiber optic sensor, also known as fiber senor or fiber amplifier. It sends the optical signal from the light source to the modulator through the optical fiber, so that the measured parameter interacts with the light entering the modulation area, resulting in the optical properties of the light (such as light intensity, wavelength, frequency, phase position, polarization state, etc.) changed. Then the changed modulated signal source will be sent to the optical detector through the optical fiber. After demodulation, the measured parameter is obtained.

Applications: Fiber optic sensors are widely used in food, packaging, electronics and other automation industry. Fiber optic sensors are usually used for detection, counting and position control.
Types of fiber optic sensor:
1. Multiple output fiber optic sensor (FD1 series)
Advantages:

Fiber optic sensor with NPN/PNP, NO/NC output modes
Adjust function with time delay control
Sensitivity adjust function
Fast response, high frequency
Two LED indicators, green LED shows the power status and red LED shows the output status
Adjust potentiometer for detect distance control
Anti-electromagnetic interference, ambient light resistance
Plastic dust-proof casing

Specification:

Item	FD1-NPR
Weight	0.5 kg
Sensing object	Opaque object
Power voltage	DC 12~24V±10%
Current consumption	≤40mA
Response time	≤100ms
Load current	≤100mA
Protection circuit	Overload protection, reverse polarity protection
Output modes	NPN/PNP, NO/NC
Light source	Red light LED
Indicator	Power: Green LED; Output: Red LED
Ambient temperature	0~50℃
Ambient humidity	35~85%RH
Intensity of illumination	Incandescent lamp: 3, 000lux
Withstanding voltage	AC 1000V 1min. 50/60Hz
Insulation resistance	≥50MΩ (base on DC 500V megger)
Anti-vibration	10~50Hz, double-amplitude, 0.75mm, in each of x, y and z direction for two hours
Anti-concussion	Acceleration: 500m/s2 (approx 50G) in each of x, y and z direction for 3 times
Protection class	IP65
Casing materials	PC+ABS
Connection	PVC cable with 2m length

Dimensional drawing (unit: mm):
Fiber optic sensor FD1 dimensional drawing
Wiring diagram:
Fiber optic sensor FD1 wiring diagram

2. Digital display fiber optic sensor (FD2 series)
Advantages:

Fiber optic sensor with leading technology - dual monitor mode
Build-in high speed digital processing chip
Automatic and manual correction functions for selection
High-accuracy survey
Easy to install and maintain

Specification:

Item	Main unit	1-wire extension unit	No-wire extension unit
	FD2-NB11R (NPN NO/NC output)	FD2-NB12R (NPN NO/NC output)	FD2-NB10R (NPN NO/NC output)
	FD2-PB11R (PNP NO/NC output)	FD2-PB12R (PNP NO/NC output)	-
Weight	0.8 kg
Power supply	DC 12~24V
Current consumption	＜60mA
Voltage drop	＜1V		-
Load current	＜100mA		-
Response time	＜200us (FINE), ＜400us （TURBO), ＜800us (SUPER)		410us~1.7ms
Detection accuracy	＞0.01mm (depends on fiber)
Light source	660nm red visible light
Ambient light	Incandescent lamp: 3000lux, sunlight: 10000lux
Circuit protection	Surge, reverse polarity and overload protection
Output indicate	4 LED digital display, LED bar display, operation indicator
Functions	Emitter power optional (FINE/TURBO/SPER), output time delay optional (0ms/10ms/40ms)
Ambient temperature	-10~+50℃
Withstanding voltage	AC 1000V 50/60Hz 60s
Insulation resistance	≥50MΩ (base on DC 500V megger)
Anti-vibration	Amplitude 0.5mm, frequency 10~50Hz
Anti-shock	500m/s2 (50G) in each x, y and z direction for 3 times
Protection class	IP54
Casing material	PC+ABS
Connection	PVC cable with 2m length

Dimensional drawing:
Fiber optic sensor FD2 dimensional drawing
Wiring diagram:

It's a video of digital fiber optic sensor/amplifier wiring and setting.

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