The SICK DS500-N111 is a Sensor for industrial control and automation applications.

SICK DS500-N111 is a pulsed optical laser time-of-flight distance sensor from the Dx500 Standard family, part number 1026521. It measures distances from 0.2 m to 30 m on 90% white remission surfaces using a visible red laser diode at 650 nm.

What measurement challenges does the DS500-N111 solve?

Industrial distance measurement often fails on dark, hot, or uncooperative targets. This unit addresses this with high optical output power and a pulsed time-of-flight principle, so it can measure on natural surfaces without a reflector. The measuring range extends to 0.8 m ... 15 m on 6% black remission, which covers many difficult targets in oil and gas processing.

Repeatability of 3 mm ... 5 mm and typical accuracy of ± 3 mm ... ± 10 mm support reliable position feedback. A response time of 250 ms in Fast mode or 1,000 ms in Standard mode lets engineers balance speed against signal stability for each application.

Key features and technical specifications

• Measurement principle: Pulsed optical laser time-of-flight distance measurement.
• Measuring range: 0.2 m ... 30 m (90% white remission); 0.8 m ... 15 m (6% black remission).
• Light source: Visible red laser diode, 650 nm, average optical power < 1 mW.
• Laser class: Class 2 per IEC 60825-1:2014 and EN 60825-1:2014.
• Repeatability: 3 mm ... 5 mm.
• Measurement accuracy: Typ. ± 3 mm ... ± 10 mm.
• Response time: 250 ms (Fast mode) / 1,000 ms (Standard mode).
• Switching hysteresis: Adjustable 10 mm ... 100 mm.
• Switching frequency: Up to 4 Hz.
• Digital outputs: 2x NPN switching outputs (≤ 100 mA); 1x NPN multifunctional input (MF).
• Supply voltage: DC 10 V ... 30 V, reverse-polarity protected.
• Power consumption: ≤ 3.5 W ... 4 W without load.
• Electrical connection: Male connector M12, 5-pin.
• Ambient temperature, operation: -10 °C ... +45 °C.
• Ambient temperature, storage: -25 °C ... +75 °C.
• Enclosure protection rating: IP65 (EN 60529).
• Housing material: Heavy-duty aluminum die-cast housing.
• Dimensions (W x H x D): 69 mm x 50 mm x 153 mm.
• Weight: Approx. 1,000 g.

How does This unit handle harsh oil and gas environments?

The heavy-duty aluminum die-cast housing and IP65 rating protect the sensor from dust and water jets in demanding plant areas. Operating temperature from -10 °C to +45 °C suits many indoor and sheltered outdoor installations. The M12 5-pin connector simplifies wiring and replacement in the field.

For dark targets such as coal or metal coils, the high optical output power maintains measurement reliability without a reflector. This reduces setup time and avoids fragile add-on optics. The front panel display and keypad allow direct on-site setup, so technicians can adjust parameters without a laptop.

Where is this laser distance sensor typically used?

Typical applications include position monitoring of hot slabs, metal coils, coal piles, and paper rolls. In oil and gas operations, the sensor can support level or distance checks on uncooperative surfaces where reflectors are impractical. The adjustable switching hysteresis of 10 mm ... 100 mm helps suppress false triggers from vibration or surface texture.

With a switching frequency up to 4 Hz, This unit fits slow-to-medium speed positioning tasks. The two NPN outputs can drive indicators or PLC inputs, while the multifunctional input offers additional control flexibility.

How should This unit be installed and maintained?

Mount the sensor rigidly using the aluminum housing, and align the laser spot to the target surface. Connect the M12 5-pin connector to a DC 10 V ... 30 V supply that is reverse-polarity protected. Keep the front window clean and inspect periodically for dust or moisture buildup. Follow the manufacturer's safety manual for Class 2 laser operation.

During commissioning, use the front panel display and keypad to set response time and hysteresis. Verify stable readings at the expected target distance and surface type. If readings become erratic, check for window contamination or supply voltage outside the specified range.

What should buyers consider before ordering?

Confirm that the measuring range and response time match your application requirements. This unit provides 0.2 m ... 30 m range and 250 ms or 1,000 ms response, which suits many positioning tasks. For integration with fieldbus networks, an external gateway or connection module may be required; confirm cabling and gateway needs with the supplier.

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

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