Skip to content Elovis Laser Sensor is the Laser Surface Velocimeter – Accurate Laser Doppler Solutions for Speed and Length Measurement. If you want to achieve ultra-accurate speed and length measurements with the µSPEED Laser-Encoder, chose Elovis laser sensor. It offers ±0.05% accuracy and a quadrature output. This technology is great for replacing traditional tactile speedometers, rotary encoders, and machine systems. It uses non-contact laser measurement. This ensures slip-free, maintenance-free, and permanently calibrated performance on many surfaces. No adjustments are needed.
Lightweight at only 0.9 kg, the µSPEED provides accurate data. It uses quadrature output or an ASCII string through a serial interface. There are also options for Ethernet and industrial bus systems. Great for measuring roll length, controlling the cutting process, and regulating machine speed. It also supports different length and speed measurements for full control.
This Bidirectional non-contact laser length measurement system is suitable for applications such as material handling and conveying processes.
Unidirectional non-contact laser length measurement system for conveying processes with few stops. System is identical to μSPEED-PRO, but with smarter features:
This is a unidirectional non-contact laser length measurement system available with medium accuracy for conveying processes with few stops.
| µSPEED-PRO | µSPEED-SMART | µSPEED-SMART-ECO | |
|---|---|---|---|
| Direction Detection | non-contact | via external direction signal | via external direction signal |
| Measurement starting from V=0 | non-contact | optional | No |
| Material Presence | non-contact | optional | No |
| Accuracy (typ.) | ± 0,05 % | ± 0,05 % | ± 0,3 % |
| Repeatability | ± 0,02 % of the measurement value (except SMART-ECO) | ||
| Sensor Type | Smart Sensor | Smart Sensor | Smart Sensor |
| Speed Measurement Range | 0 to ± 1.200 m/min 0–20 m/s | 1 to ± 6.000 m/min 0,02–100 m/s | 1 to ± 6.000 m/min 0,02–100 m/s |
| Stand-off Distance | 115±5 (±20) mm | 120±5 (±20) mm 240±10 (±40) mm | 120±5 (±20) mm 240±10 (±40) mm |
| Interfaces |
1 x RS-485 or RS-232 alternatively I/O: RS422, RS485 |
| I/Os |
Quadrature Output 1 to 100,000 (depending on maximum speed) p/s/m Input: Start, Gate, Direction, Laser Interlock Output: Status |
| I/O Type |
RS-422 Gauge Laser Interlock (single, 24V) |
| Available Data |
speed, length, signal quality, status, laser interlock, valid measurement material present (only PRO) |
| Fieldbus |
Profibus, CANopen, DeviceNet, CC-Link Ethernet/IP, Profinet IO, Modbus-RTU Bluetooth (All Fieldbus optional) |
| Class of Protection |
Sensor Head: IP67 Controller/MID-Counter: Front: IP51; Back: IP20 |
| Dimensions (LxWxH) | Sensor Head: 154x94x39 mm |
| Weight | Sensor Head: 0,9 kg |
| Power Supply | 24 VDC (18 V to 30 V) |
| Operating Unit | optional |
| Laser Data | 25 mW, 780 nm (Laser Class 3B) |
| Ambient Temperature / Humidity |
5 to 55°C - not condensing beyond temperature range → external cooling/heating required |
Two laser beams generate a bar (fringe) pattern on the surface of the material being measured.
As the material surface moves, it modulates the intensity of the backscattered light.
The frequency of this brightness modulation is directly proportional to the surface speed and corresponds to the Doppler frequency.
The scattered light is detected by a photodetector and converted into an electrical signal
The signal is passed through an analog-to-digital converter and sent to a processor.
The processor determines the current speed and path length from the digitized signal.
No marks or scales are required on the surface of the material.
