E3T-SR21 2M Encyclopedia Entry

Product Overview

The E3T-SR21 2M belongs to the category of photoelectric sensors and is commonly used for detecting the presence or absence of an object. These sensors are known for their reliability, accuracy, and versatility. The E3T-SR21 2M is characterized by its compact design, high precision, and ease of installation. It is typically packaged in a durable housing with a 2-meter cable attached, making it suitable for various industrial applications.

Specifications

• Model: E3T-SR21 2M
• Category: Photoelectric sensor
• Sensing Method: Through-beam
• Sensing Distance: Up to 2 meters
• Output Configuration: NPN
• Power Supply Voltage: 12-24V DC
• Housing Material: Plastic
• Cable Length: 2 meters

Detailed Pin Configuration

The E3T-SR21 2M features a standard pin configuration with clearly labeled terminals for power supply, output, and ground. The pinout is as follows: - Pin 1: Power supply (+) - Pin 2: Output - Pin 3: Power supply (-)

Functional Features

• High precision detection
• Long sensing distance
• Compact and durable design
• Easy installation and setup
• Reliable performance in various environmental conditions

Advantages and Disadvantages

Advantages

• Reliable and accurate detection
• Versatile application in different industries
• Durable construction for long-term use
• Easy integration into existing systems

Disadvantages

• Limited sensing range compared to some other models
• Requires careful alignment for optimal performance

Working Principles

The E3T-SR21 2M operates on the principle of through-beam sensing, where a transmitter emits a beam of light to a receiver. When an object obstructs the light beam, the receiver detects the change in intensity and triggers the sensor's output accordingly.

Detailed Application Field Plans

The E3T-SR21 2M is widely used in industrial automation for tasks such as object detection, counting, and positioning. It finds applications in conveyor systems, packaging machinery, material handling equipment, and assembly lines. Additionally, it is utilized in automotive manufacturing, food and beverage processing, and pharmaceutical production.

Detailed and Complete Alternative Models

• E3T-SR11 5M: Similar through-beam photoelectric sensor with a longer sensing distance of 5 meters
• E3T-SR31 1M: Compact photoelectric sensor with a shorter sensing distance of 1 meter, suitable for space-constrained installations
• E3T-SR41 3M: Through-beam sensor with a medium sensing distance of 3 meters, designed for general industrial applications

In conclusion, the E3T-SR21 2M photoelectric sensor offers reliable and precise object detection capabilities, making it a valuable component in industrial automation systems across various sectors.

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