How Can You Achieve Reliable Long-Range Positioning in Freezing Conditions?

The SICK DL100-23HA2102 answers that question directly. It is a phase-shift optical time-of-flight laser distance sensor that measures up to 300 m on Diamond Grade reflective tape. Moreover, its integrated heating system keeps the sensor operating down to -40 °C.

Engineers in oil and gas, cold storage, and automated warehousing face a common problem. Standard sensors lose accuracy or fail entirely when temperatures drop below freezing. In addition, long-range measurement often demands frequent recalibration. The DL100-23HA2102 from SICK addresses both issues in a single rugged package.

What Makes the SICK unit Built for Demanding Environments?

This sensor belongs to the Dx100 series and carries part number 1052699. Its design reflects decades of field experience in mission-critical positioning tasks. The aluminum die-cast housing with an acrylic glass optical window protects the internal optics from dust and moisture. Furthermore, the IP65 rating (EN 60529) confirms resistance to water jets and solid particles.

Key technical specifications include:

• Operating temperature: -40 °C ... +55 °C with the integrated heating system active.
• Storage temperature: -40 °C ... +75 °C.
• Supply voltage: DC 18 V ... 30 V, reverse-polarity protected.
• Power consumption: Typically 25 W ... 35 W when the heating element is active.
• Measuring range: 0.15 m ... 300 m on Diamond Grade reflective tape.
• Measurement accuracy: Typically ± 2 mm ... ± 3 mm.
• Repeatability: 0.5 mm ... 1 mm (typical 0.5 mm at 1 σ).
• Maximum tracking velocity: 15 m/s; maximum acceleration 15 m/s².
• Light source: Visible red laser diode, 658 nm, Class 2 per IEC 60825-1:2014, average optical power < 1 mW.
• Communication interface: PROFIBUS DP (EN 50170, up to 12 Mbit/s).
• Electrical connection: Power via male M12 4-pin; PROFIBUS In/Out via 2x female M12 5-pin (B-coded, SPEEDCON™).
• Dimensions (W x H x D): 69.4 mm x 82.5 mm x 100.2 mm; weight approximately 1,000 g.

The high tracking velocity and acceleration figures make this sensor suitable for automated storage and retrieval systems (ASRS). In such systems, fast and accurate position feedback is essential to avoid collisions and maximize throughput.

Where Does This unit Deliver the Most Value?

Cold-storage facilities represent one of the most challenging environments for any sensor. Temperatures of -40 °C can cause condensation, frost, and mechanical seizure. However, This unit includes an internal heating system that maintains operation at these extremes. As a result, it provides reliability you can depend on in frozen warehouses and outdoor installations in harsh climates.

In oil and gas operations, long-range distance measurement is often required for tank level monitoring or crane positioning. The 300 m range on reflective tape allows a single sensor to cover large areas. Additionally, the PROFIBUS DP interface integrates seamlessly with existing control networks. The phase-shift optical time-of-flight principle ensures stable readings even under varying light conditions.

Other typical applications include:

• Automated storage and retrieval systems (ASRS) in deep-freeze warehouses.
• Positioning of overhead cranes and conveyor systems.
• Collision avoidance in automated guided vehicles (AGVs).
• Long-range level measurement in silos and tanks.

How Does the Sensor Integrate with PROFIBUS DP Networks?

This unit communicates over PROFIBUS DP at speeds up to 12 Mbit/s. This fieldbus interface is widely used in oil and gas and manufacturing environments. The sensor provides two M12 female connectors for PROFIBUS In/Out, both B-coded and equipped with SPEEDCON™ for fast connection. Power is supplied through a separate male M12 4-pin connector.

Integration Note: Wiring the sensor into a PROFIBUS DP network may require an external gateway or connection module. PetroPartsOnline recommends confirming cable and gateway compatibility with our technical team before installation. The sensor also offers two push-pull digital outputs (PNP/NPN, configurable B/Q, ≤ 100 mA) and a multifunctional input (MF) for additional control flexibility.

What Maintenance Practices Extend Sensor Life?

Regular inspection helps maintain measurement accuracy and prevents unplanned downtime. The optical window should be checked for dust, frost, or debris. In cold-storage applications, the heating system reduces condensation, but periodic cleaning of the PMMA window is still advisable. Use a soft, lint-free cloth and a mild cleaning solution suitable for acrylic glass.

Because the sensor operates in demanding environments, verify that the M12 connectors are securely tightened. Loose connections can cause intermittent communication errors. Also, confirm that the supply voltage remains within the 18 V ... 30 V DC range. The reverse-polarity protection prevents damage from accidental wiring errors, but correct polarity is still recommended.

The integrated LC display and menu navigation simplify parameter checks during maintenance rounds. For detailed troubleshooting, refer to the official SICK documentation or contact PetroPartsOnline for application-specific guidance.

FAQ

What is the maximum measuring range of This unit?

The SICK unit measures up to 300 m when using Diamond Grade reflective tape. The minimum range is 0.15 m.

Can This unit operate in freezing temperatures?

Yes, the sensor operates from -40 °C to +55 °C with the integrated heating system active. This makes it suitable for cold-storage facilities.

What is the supply voltage requirement for This unit?

The sensor requires a DC supply voltage between 18 V and 30 V. The input is reverse-polarity protected.

How does This unit communicate with a control system?

It uses PROFIBUS DP (EN 50170) at speeds up to 12 Mbit/s. Two M12 female connectors provide the In/Out interface.

What is the laser class of This unit?

The sensor uses a Class 2 laser according to IEC 60825-1:2014 and EN 60825-1:2014, with a wavelength of 658 nm and average optical power below 1 mW.

Contact PetroPartsOnline for parts suited to your application's requirements.

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