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Pipe ID Control System from Riftek

from works based on a measurement principle called laser rescanning by a rotational triangulation sensor.

RF096-35/55-100

Measured ID range, mm: 35...55                
ID measurement accuracy, mm: ±0.05
Angle scan resolution, points for turnover: 3200

                                                                                                                       


The system’s operation depends on scanning the inner surface of the pipe with the help of a rotating triangulation laser sensor.

The system includes a base on which the linear translation mechanism, the interface module, and the controller are mounted. The rotation module on which the laser sensor is fitted is carried by the linear translation mechanism. Four connectors for power and interfaces can be found on the back of the system.

Pipe ID Control System

Figure 1. System structure.

The quantified pipe is mounted coaxially to the laser sensor. The laser sensor moves into the hole when the command is received from an external controller.

The sensor starts to rotate and scan the pipe’s inner surface, sends the polar coordinates of the surface (distance from the rotation axis quantified by the sensor and the corresponding angle of rotation) to the integrated computer to estimate the needed geometric parameters. The result is transferred to the external controller through PROFINET.


Parameter Value
Measured ID range, mm 35...55
ID measurement accuracy, mm ±0,05
Linear translation accuracy, mm ±0,05
Pipe depth, mm 100
Angle scan resolution points for a turnover 3200
Laser sensor linearity, μm ±15
Laser sensor resolution, μm 3
Laser sensor sample frequency, Hz 9400
Laser sensor output power, mW <1
Laser safety class 2  (IEC60825-1)
Light source red semiconductor laser, 660 nm wavelength
Interface Ethernet and PROFINET
Power supply, V 220
Measurement time, s <5
Environmental resistance:
  Vibration 20 g / 10...1000 Hz, 6 hours for each of XYZ axes
Shock 30 g / 6 ms
Permissible ambient light, lx 30000
Relative humidity, % 5-95% (no condensation)
Operating ambient temperature, °С 0…+45
Storage temperature, °С -20…+70
Weight (without cables), gram 6800

 


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