Screen Printing Mesh Frame Height Detection with Laser Displacement Sensor
In screen printing machines used for photovoltaic applications, accurately detecting the height of the mesh frame is essential to maintain optimal squeegee pressure during the printing process. If the frame’s depth is insufficient, it may result in poor print quality or adhesion issues. Conversely, excessive depth can damage the mesh frame due to collisions.
The SD22-35 Point Laser Displacement Sensor by SinceVision provides precise height measurements, offering real-time feedback for process optimization. With a 20–50mm measurement range, 0.1% F.S. linearity, and a maximum sampling frequency of 3kHz, the sensor ensures consistent and reliable measurements. These capabilities help improve print accuracy and extend equipment lifespan.
SinceVision Solution: SD33-30 Laser Displacement Sensor
Camera Selection
| Model number | SD33-30-485-VA | ||
| Reference distance (CD) | 30mm | ||
| Measuring range | ±4mm | ||
| Light source | Light source wavelength | 655nm | |
| Laser class | Class 2 | ||
| Laser output power | 1mW | ||
| Spot diameter (spot size) | Near side | 80×180μm | |
| Reference distance | 70×260μm | ||
| Remote side | 100×400μm | ||
Repetition accuracy | 2μm | ||
| linearity | ±0.1% F.S. | ||
| Temperature characteristic | 0.05% F.S./℃ | ||
| Sampling frequency (Hz) | 500/1000/2000/3000Hz(4 levels optional) | ||
| Input/output | Communication port | 1 RS485 (support ModbusRTU) | |
| Analog output | 1 analog output, analog voltage (0~10V) or analog current (4~20mA) Analog voltage or analog current cannot be switched | ||
| IO input | 1 channel, support laser shutdown, remote teaching, sampling hold, single pulse trigger, return to zero and other functions | ||
| IO output | 1 route, determine the status output | ||
Operating temperature | -10 ~ 50℃ | ||
| Storage temperature | -20 ~ 70℃ | ||
| Working humidity | 35% to 85% no condensation | ||
| EFT protection | Power port 2kV/5 or 100kHz, signal port 1kV/5 or 100kHz, in accordance with IEC 61000-4-4 standards | ||
| ESD protection | Contact discharge is 4kV and air discharge is 8kV, in line with IEC 61000-4-2 standards | ||
| Vibration | 10~55Hz, double amplitude 1.5mm, X, Y, Z direction 2 hours each | ||
| Impact | Punch 500m/s² (about 50G) three times in X, Y, and Z directions | ||
| IP level | IP67, conforming to IEC 60529 standard | ||
| Dimensions (mm) | 60×50×22 | ||
| Weight (including cables) | 120g | ||