LDL-T Laser Distance Sensor 4 20mA 100m Range 1mm Accuracy

 

LDL-T Laser Distance Sensor 4 20mA Overview

The LDL-T laser distance sensor 4-20mA is an advanced measuring device designed to deliver reliable and precise distance measurement in a wide variety of applications. Featuring a maximum range of 100 meters, measurement accuracy up to ±1mm, and frequency as high as 100Hz, the LDL-T combines speed, stability, and flexibility in one compact solution. Unlike conventional modules, this sensor integrates an analog 4-20mA output, making it ideal for industrial automation and process control systems that require standardized current loop communication.

Introduction to 4-20mA Analog Current Output

The 4-20mA current loop is one of the most widely used industrial standards for transmitting analog signals. By converting measured distance values into a proportional current output, the LDL-T ensures stable data transmission over long distances with minimal interference.

• Noise immunity: The 4-20mA loop is resistant to electrical noise, ensuring reliable data in industrial environments.

• Long-distance transmission: Current loops can transmit signals over hundreds of meters without significant loss.

• Fail-safe operation: A current lower than 4mA typically indicates a system fault, making diagnostics easier.

• Easy integration: Compatible with PLCs, data loggers, and industrial control systems.

This makes the LDL-T not just a laser distance sensor analog output device but also a dependable solution for critical industrial tasks.

Product Specifications

Accuracy	±1mm
Measurement Units	Meter/Inch/Feet
Measure Distance	0.03-10/20/40/80/100 meters
Measure Time	0.3~4 seconds
Frequency	3-100Hz
Laser Type	620-690nm/510-550nm, <1mW
Laser Class	Class II
operating Temperature	0-40 ℃ （32-104 ℉ ）
Storage Temperature	-25~60 ℃ (-13~140 ℉)
Interface	UART/RS485/RS232/Bluetooth
Voltage	DC 2.5~3.3V
Size	27.87*17.03*7.01mm
Weight	3g

Red and Green Laser Versions

The LDL-T comes in two laser color options:

• Green laser (510–550nm): Highly visible under bright lighting conditions, making it suitable for outdoor or long-distance applications.

• Red laser (610–690nm): Energy-efficient and commonly used in indoor environments and controlled lighting conditions.

These options allow engineers to select the most appropriate sensor for their operational environment.

Supported Communication Interfaces

In addition to the 4-20mA analog output, the LDL-T provides multiple digital communication interfaces:

• TTL: Best suited for embedded systems with microcontroller connections. Simple and low power.

• RS232: Reliable and widely supported, excellent for compatibility with legacy systems.

• RS485: Designed for industrial networks, supports long-distance transmission and multiple node connections with strong anti-interference capability.

• Bluetooth: Enables wireless communication for mobile devices and IoT applications, offering flexibility and ease of installation.

This variety ensures the LDL-T can be seamlessly integrated into both traditional industrial systems and modern smart devices.

Secondary Development and Integration

The LDL-T is developer-friendly, making it an excellent analog laser distance sensor for research, prototyping, and system customization. Compatible with popular development platforms such as Arduino, Raspberry Pi, and ESP32, it supports a wide range of projects:

• Arduino: Rapid prototyping and educational use, perfect for students and hobbyists.

• Raspberry Pi: Advanced computing power for projects involving machine vision and data analysis.

• ESP32: Built-in wireless capabilities for IoT, automation, and real-time monitoring solutions.

This flexibility ensures engineers and developers can quickly create customized applications.

Application Scenarios

The LDL-T laser distance sensor 4-20mA is designed for industries that demand both accuracy and stability. Common applications include:

• Industrial Automation: Positioning systems, material handling, and machine alignment.

• Process Control: Tank level monitoring, conveyor belt tracking, and production line control.

• Robotics and AGVs: Navigation, object detection, and collision prevention.

• Logistics and Warehousing: Volume measurement, stacking control, and smart inventory management.

• Smart Agriculture: Precision irrigation systems, greenhouse automation, and crop monitoring.

• Construction and Surveying: Distance measurement, alignment, and site monitoring.

With its 100m range, ±1mm accuracy, and 4-20mA analog signal, the LDL-T laser distance sensor analog output is especially suited for critical applications where both reliability and precision are required.

Why Choose Us

Chengdu Meskernel Integrated Technology Co., Ltd. is a leading provider of laser distance measurement solutions. As a high-tech enterprise, we specialize in the R&D and manufacturing of laser distance sensors, laser rangefinders, and measurement systems. Our strengths include:

• Strong R&D capability: Experienced engineers dedicated to innovation.

• Reliable quality control: Strict testing ensures each sensor meets international standards.

• Wide product portfolio: Covering short-range, industrial-grade, and long-range measurement sensors.

• Global support: Serving customers worldwide in automation, logistics, defense, and smart infrastructure.

By choosing us, you gain a trusted partner with the expertise to support both standard and customized measurement needs.

Other Recommended Products

We also provide additional models to cover different measurement requirements:

• LDJ-P4 Industrial Laser Distance Sensor

  • Range up to 200m

  • IP54 protective housing for industrial applications

  • Suitable for outdoor construction and heavy-duty industrial monitoring

• TS1224 Long Range Laser Rangefinder Sensor

  • Measuring range up to 2km

  • Compact 905nm module

  • Ideal for drones, UAV integration, and long-range surveillance

• PTFS High Frequency Laser Range Sensor

  • Measuring frequency up to 500Hz

  • High-speed detection for real-time measurement

  • Perfect for robotics, automation, and motion tracking applications

Together with the LDL-T 4-20 mA analog output laser distance sensor, these models form a complete product line that addresses both short-range precision and ultra-long-range requirements.