The systems refers to non-contact laser thickness measurement equipment and is intended for precise measuring of thickness of sheet materials such as tapes, boards, plates, rubber sheets, and so on. It is a stand-alone software and hardware system that contains laser sensors, control module and an indication device.
System parameters can be changed for a specific task.
Thickness Measurement System RF580
Laser System for Inline Sheet Materials Thickness Measurement RF160.20
Laser system for monitoring the thickness of rubber sheets during calendering RF160.10
Thickness Measurement System RF580. Specification
| Parameter | Value | |
| Thickness measurement range, mm | by request | |
| Thickness measurement accuracy, mm |
±0,1% of the laser sensors measurement range or according to specification for encoders |
|
| Input interface, sensors connection | RS485 | |
| Output interface, result transfer | Ethernet | |
| Measurement speed, measurements/second | < 9400 | |
| Power supply, V | 220 (±10 %) for AC network with frequency of 50 (±1) Hz | |
| Power consumption, W | 10 | |
| Operating conditions: | ||
| Ambient temperature, °С | +1...+35 | |
| Relative humidity, % | 65 (at 25°С) | |
Note: System parameters can be changed for a specific task.
Laser System for Inline Sheet Materials Thickness Measurement RF160.20. Specification
| Parameter | Value | |
| Thickness measurement range, mm | 10 or 25 or customized | |
| Measurement error, um | ±3 or ±7 | |
| Scanning range, mm | by request | |
| Input interface for sensors connection | Ethernet | |
| Measurement speed, kHz | 10 or 70 | |
| Power supply, V | 220 (±10 %) for AC network with frequency of 50 (±1) Hz | |
| Power consumption, not more, W | 500 | |
| Operating conditions: | ||
| Ambient temperature, °С | +1...+35 | |
| Relative humidity, % | 65 (at 25°С) | |
Note: System parameters can be changed for a specific task.
Laser system for monitoring the thickness of rubber sheets during calendering RF160.10. Specification
| Parameter | Value | |
| Thickness measurement range, mm | 10 or customized | |
| Measurement error, um | ±20 | |
| Scanning range, mm | 500x2 or customized | |
| Input interface for sensors connection | Ethernet | |
| Measurement speed, Hz | 9400 | |
| Power supply, V | 220 (±10 %) for AC network with frequency of 50 (±1) Hz | |
| Power consumption, not more, W | 500 | |
| Operating conditions: | ||
| Ambient temperature, °С | +1...+35 | |
| Relative humidity, % | 65 (at 25°С) | |
Note: System parameters can be changed for a specific task.
Structure and operating principle RF580 Series.
The system can support an unlimited number of thickness control points. Each control point is one sensor mounted according to Scheme #1 (Figure 1, left) or two sensors mounted according to Scheme #2 (Figure 1, right).
According to Scheme #1 (one sensor for one point), the material thickness is a difference between the distance from the base surface on which the material is located, and the distance to the upper surface of the material measured by a sensor. The sensor position is calibrated relative to the base surface.
According to Scheme #2 (two sensors for one point), the material thickness is a difference of distances to the material surfaces measured by each of the sensors. The position of sensors is calibrated relative to each other.
Figure 1. Scheme #1 with one sensor (left) and Scheme #2 with two sensors (right).
Structure and operating principle RF160.20 Series.
The operation of the system is based on continuous scanning of the sheet surfaces by laser sensors.
The system contains two laser triangulation sensors (2) mounted on the C-frame (3). The C-frame is installed on the carriage of the linear motion module (4). The system also contains a calibration plate (6). The figure below shows the sheet material (1) being measured and the conveyor section (5). The control computer is not shown.
Figure 2. Structure and overall dimensions of the system.
Laser sensors.
Depending on the technical requirements, the system may contain laser triangulation sensors RF603, RF603HS or RF602: www.riftek.com/products/laser_triangulation_sensor.Control cabinet and panel computer.
The control cabinet contains a power supply, a motor driver for the linear motion system, and an Ethernet switch.
The industrial panel computer is designed to receive information from sensors, analyze and display measurement results.
Overall and mounting dimensions of the control cabinet and panel computer are shown in Figure 3.
Figure 3. Control cabinet and panel computer.
Structure and operating principle RF160.10 Series.
The system is placed above the calender roller (1) with the controlled material (2) and contains the support beam (3), on which two linear motion modules (4 and 4') with stepper motors (5 and 5') are installed. Each linear motion module carries the laser triangulation sensor (6 and 6'), which are mounted to automatically move along the calender.
Figure 4 - Operating principle RF160.10 Series
Overall and mounting dimensions of the system are shown in Figure:
Figure 5 - Overall and mounting dimensions of the system RF160.10 Series
The system is preliminarily and periodically calibrated. During the calibration process, laser sensors move along the roller (without material) and measure the distance to it. The obtained values, linked to the linear position of the sensors, are stored in the computer memory.
Sheet material thickness measurements are carried out as follows: depending on the requirements for the position of the control lines, the sensors are installed in the required positions along the roller. When moving material, sensors measure the distance to its surface, the resulting values are transmitted to the computer, where the thickness of the material is calculated as the difference between the distances to the material and the roller (calibration values).
Laser sensors.
The system is equipped with laser triangulation sensors RF603-60/10 (base distance 60 mm, working range 10 mm), in a protective housing with air cooling and air protection of windows. A distinctive feature of the sensors is the use of an IR laser (808 nm) as a radiation source, which increases the stability of the sensors in water vapor conditions.Laser triangulation sensors: www.riftek.com/products/laser_triangulation_sensor
Laser System for Inline Sheet Materials Thickness Measurement RF160.20.
Laser system for monitoring the thickness of rubber sheets during calendering RF160.10.
RF580-N-N1-SERIAL-N3
| Symbol | Description |
| N | Number of control points |
| N1 | Number of sensors in each control point (1 or 2) |
| SERIAL | Type of the sensor serial interface: RS485 - 485 or Ethernet - ET |
| N3 | Number of logic outputs |
Order information for Laser System for Inline Sheet Materials Thickness Measurement RF160.20
RF160.20-T-W
| Symbol | Description |
| T | Controlled thickness range, mm |
| W | Cross scanning range, mm. |
RF160.10-T-W
| Symbol | Description |
| T | Controlled thickness range, mm |
| W | Cross scanning range, mm. |