E3T-ST11R

Series:	E3T
Part Status:	Active
Sensing Method:	Through-Beam
Sensing Distance:	39.370" (1m)
Voltage - Supply:	12 V ~ 24 V
Response Time:	1ms
Output Configuration:	NPN - Open Collector/Light-ON
Connection Method:	Cable
Ingress Protection:	IEC IP67
Light Source:	Red (650nm)
Adjustment Type:	Adjustable
Operating Temperature:	-25°C ~ 55°C

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E3T-ST11R Application Field and Working Principle
Optical sensors may be divided into several categories: photoelectric, industrial and medical. Among the photoelectric types, E3T-ST11R is an ideal choice for various measurement and sensing applications. This type of sensor is a diffuse reflective sensor that uses an infrared LED emitter and an NPN or PNP output phototransistor as the main components. It works by sending out infrared light from its LED emitter which strikes an object and then reflects back. If the emitted infrared light is reflected, then the phototransistor will detect the object by switching its output ON. In addition, when there is no object present, the sensor will remain OFF.
Typical Applications
The E3T-ST11R is a highly versatile optical sensor with a wide range of applications that include level sensing, object counting, package counting, dimming control, port control and various other detecting and measurement applications. It is ideal for use in industrial, automotive and medical environments and can be used to detect objects with an accuracy of 1 mm or less. It is also able to detect objects in dusty, noisy and vibration environments, making it very useful in industry-related fields.
Technical Specifications
The E3T-ST11R is rated for an optical sensing range of between 0 - 20 cm and an infrared emission intensity of up to 8 mW/cm2. It also has an output current of between 4 and 15 mA and a response time of between 0.5 and 1.2 ms. The sensor also comes with various mounting options including vertical, horizontal, and axial mounting. In addition, a variety of voltage and current options are available making it suitable for a wide range of applications, from basic industrial automation to medical applications.
Working Principle
The E3T-ST11R works by emitting infrared (IR) light from the LED emitter of the sensor. When a reflective object is placed in front of the sensor, the emitted IR light will be reflected back to the sensor. The reflected IR light will then be detected by the phototransistor, which will then switch its output from OFF to ON indicating the presence of an object. The output current of the sensor can be adjusted by adjusting the voltage or current, and the sensitivity of the sensor is adjustable by adjusting the infrared emission intensity.
Conclusion
In conclusion, the E3T-ST11R is a versatile and reliable optical sensor suitable for many different applications, from industrial automation to medical measurements. The sensor is easy to set up and use with adjustable modes for IR emission intensity, voltage and current. The sensor works by emitting an IR light which is reflected back by an object and detected by the NPN or PNP output phototransistor of the sensor. This output can then be used to indicate the presence or absence of the object.

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