Dimetix DEH-30-500 Laser Distance Sensor

The selection should be based on the actual distance, tolerance, target speed, surface, and control system.

• For machinery, cranes and trolleys in hot plants where ±3 mm is sufficient.
• For metallurgical processes where the sensor can be kept away from the heat source and protected from radiation, dust, and splashes.
• For applications of 100…500 m that do not require 4-20 mA.
• For installations where a lower consumption version than the DPE models is desired.

Alternatives within the D Series: DPE-30-500 if 250 Hz and -40 °C are required; DEN-10-500 if ±1 mm or 4-20 mA are required.

The following examples are taken from documented applications using Dimetix technology and have been selected because they help to understand How is distance measurement used to obtain position, level, deformation, or dimension?, not just because they share a keyword.

Transfer trolleys in steelmaking

A documented system replaced multiple microswitches with two laser sensors and reflectors mounted on the carriage. This solution allowed for variable stop positions and prevented impacts with end stops. The sensors were protected in housings with cooling and air purging to withstand heat and dust.

Hot metal level

Dimetix documents level measurement of cast steel and iron from a remote position to prevent overflows. The design must isolate the sensor from thermal radiation and consider dust, fumes, and ambient temperature; the +60 °C of the DEH is the permissible temperature of the sensor, not that of the metal being measured.

Crane positioning in heavy industry

The absolute measurement allows for control of bridge and carriage travel without relying solely on mechanical limit switches. In long bays, a reflector can be used to extend the signal range.

Machinery in dusty and hot environments

The D Series supports air-cooled housings and jackets. Purging the optical window is a practical solution when dust buildup is present.

• Interfaces: RS-232, RS-422/RS-485 and SSI; USB for configuration.
• Analog output: It does not have a built-in analog output.
• Digital I/O: 1 digital output + 1 digital input.
• Industrial Ethernet: PROFINET, EtherNet/IP and EtherCAT via optional cover.

• The DEH-30-500 does not have a 0/4-20 mA output. If an analog signal is required, select DPE, DEN, DAN, or DAE.
• For radiant heat or temperatures exceeding the sensor's specification, distance, insulation, shading, or cooling must be used. Dimetix offers air-cooled jackets for the D Series.
• In atmospheres with dust, smoke, or particles, the optical signal may deteriorate; an air purge helps keep the window clean, but the solution must be validated in the actual application.
• At long distances, the alignment and mechanical stability of the support are as important as the sensor itself.

In critical applications, it is advisable to validate the target surface, ambient light, geometry, optical contamination, speed, and atmosphere before setting the final usable range.