SICK LMS511-20190 Bulk Solids Flow Sensor Overview

The SICK LMS511-20190 is a laser run time flow sensor for bulk solids measurement. This sensor uses infrared light at 905 nm for reliable detection. The SICK LMS511-20190 carries laser class 1 certification for complete eye safety. Its aperture angle spans 190 degrees for wide area coverage. The working range extends from 0.5 m up to 20 meters. This sensor includes built-in heating for cold environment operation. The SICK LMS511-20190 achieves measurement accuracy of ±3% at reference conditions. Its MTTF exceeds 100 years for exceptional reliability.

Technical Specifications

General Specifications

• Model: LMS511-20190.

• Series: Bulkscan.

• Measurement Principle: Laser run time technology.

• Medium: Bulk solids.

• Light Source: Infrared (905 nm).

• Laser Class: 1, eye-safe (IEC 60825-1:2014).

• Aperture Angle: 190°.

• Bandwidth: No limit.

• Heating: Yes (built-in).

• Working Range: 0.5 m to 20 m.

• Amount of Evaluated Echoes: 5 echoes.

• Distance to Bulk Solid: ≥0.5 m.

Performance Specifications

• Measurement Accuracy: ±3% at reference conditions.

• Response Time: 13 ms, 20 ms, or 28 ms (selectable).

• Average Filter: 0 s to 3,600 s (configurable).

• Maximum Conveyor Speed: ≤30 m/s.

Scanning Frequency Options

The SICK LMS511-20190 offers selectable scanning frequencies:

• 35 Hz

• 50 Hz

• 75 Hz

Interfaces and Communication

• Auxiliary Interface: 1 port, USB 2.0, 500 kBaud.

• Serial Host Interface: 1 port, RS-232/RS-422, 500 kBaud.

• Ethernet Interface: 1 port, TCP/IP, 100 Mbit/s.

• Switching Inputs: 2 inputs plus encoder input.

• Switching Outputs: 6 outputs.

• Analog Signals: Available with separate accessory BAM100.

• Optical Indicators: 5 LEDs with additional 7-segment display.

Electrical Specifications

• Supply Voltage: 19.2 V to 28.8 V.

• Power Consumption: 22 W typical plus 55 W for heating.

• Residual Ripple: ±5%.

• Protection Class: Yes (Class III).

• Connection Type: M12 round connector.

• Output Signal: Ethernet, digital inputs/outputs, USB, RS-232/RS-422.

• Enclosure Rating: IP67 (IEC 60529).

• Switch-on Peak Current: 2 A.

• Operating Current (scanner): ≤1.3 A.

• Switch-on Time: ≤60 s.

Mechanical Specifications

• Weight: 3.7 kg.

• Gross Weight: 4.2 kg (with packaging).

• Housing Color: Gray (RAL 7032).

• Dimensions: 160 mm x 155 mm x 185 mm.

Ambient Conditions

• Ambient Operating Temperature: -40°C to +60°C.

• Storage Temperature: -40°C to +70°C.

• Ambient Light Immunity: 70,000 lx.

• Electromagnetic Compatibility (EMC): IEC 61000-6-2:2016-08 / IEC 61000-6-3:2006-07 / EN 61000-6-2:2005 / EN 61000-6-3 / A1 2011.

Installation Guide

Follow these steps to install the SICK LMS511-20190 correctly:

1. Mount the sensor at least 0.5 m away from the bulk solid flow.

2. Ensure the 190° aperture angle has a clear line of sight.

3. Connect 24 V DC power supply (19.2 V to 28.8 V range).

4. Wire Ethernet for TCP/IP communication at 100 Mbit/s.

5. Connect encoder input for conveyor speed synchronization.

6. Enable heating if operating below 0°C ambient temperature.

7. Configure response time (13/20/28 ms) using the interface.

8. Test the SICK LMS511-20190 with flowing bulk solids at ≤30 m/s.

Packaging List

• SICK LMS511-20190 bulk solids flow sensor (1 unit)

• Mounting bracket kit (1 set)

• M12 round connector (pre-attached)

• Quick start guide (1 copy)

• Product label with model number

Frequently Asked Questions (FAQ)

1. What materials can the SICK LMS511-20190 measure?
The SICK LMS511-20190 measures bulk solids such as aggregates, coal, ore, and grains.

2. Is this laser sensor safe for human exposure?
Yes, the SICK LMS511-20190 uses laser class 1 which is completely eye-safe.

3. What is the maximum conveyor speed this sensor can handle?
This sensor can measure bulk solids on conveyors moving up to 30 m/s.

4. Does the LMS511-20190 work in cold environments?
Yes, the built-in heating allows operation down to -40°C ambient temperature.

5. What communication interfaces does this sensor provide?
The SICK LMS511-20190 offers Ethernet TCP/IP, USB, RS-232, and RS-422 interfaces.