Product Feature
High precision laser displacement sensor
High-Precision Measurement with Ultra-Low Error Adopting advanced laser interferometry technology and a high-resolution optical system, the sensor achieves micron-level or even nanometer-level measurement accuracy. It can accurately capture tiny displacement changes, making it suitable for scenarios with strict precision requirements such as industrial inspection and scientific research experiments.
Technical Specifications
Parameter | DOB03-L | DOB05-L | DOB08-L | DOB12-L | DOB25-L |
Measurement Method | Diffuse Reflection (for all models) | ||||
Measuring Center Distance | 30mm | 50mm | 85mm | 120mm | 250mm |
Measurement Range | ±4mm | ±10mm | ±20mm | ±60mm | ±150mm |
Light Source | Red semiconductor laser, Class 1 (JIS/IEC/GB/KS/FDA Laser Notice No.50/GB). Maximum output: 0.39mW. Peak emission wavelength: 655nm (for all models) | ||||
Beam Diameter | 1.75×3.5mm (for all models) | ||||
Light-Receiving Unit | CMOS image sensor (for all models) | ||||
Resolution | 0.5μm | 1.5μm | 2.5μm | 8μm | 20μm |
Linearity | ±0.2% F.S. (for all models) | ||||
Temperature Characteristic | ±0.08% F.S./℃ (for all models) | ||||
Power Supply Voltage | 24V DC ±10% (including ripple 0.5V (P-P)) (for all models) | ||||
Current Consumption | ≤100mA (for all models) | ||||
Sampling Cycle | 200μs, 500μs, 1ms, 2ms (for all models) | ||||
Analog Output | Voltage: Output range 0～10.5V (normal), 11V (warning). Output impedance: 100Ω. Current: Output range 3.2～20.8mA (normal), 21.6mA (warning). Load impedance: ≤300Ω (for all models) | ||||
OUT1/OUT2/OUT3 Output | Judgment output or warning output (configurable). NPN transistor open collector / PNP transistor open collector (switchable). Maximum input current: 50mA. Applied voltage: 3～24V DC (between output and 0V). Residual voltage: ≤2V (at 50mA input current). Leakage current: ≤0.1mA. For PNP operation: Maximum output current: 50mA. Residual voltage: ≤2.8V (at 50mA output current). Leakage current: ≤0.1mA (for all models) | ||||
Output Action | Open circuit when ON (output active) (for all models) | ||||
Short-Circuit Protection | Equipped (auto-recovery type) (for all models) | ||||
NPN/PNP Switch Input | NPN open collector output active when connected to 0V; PNP open collector output active when connected to 24V DC (for all models) | ||||
Timing Input | For NPN operation: Active when connected to 0V or active during connection (configurable). For PNP operation: Active when connected to external power + or active during connection (configurable) (for all models) | ||||
Multi-Channel Input | Zero adjustment, reset, memory switching, teach-in, save, laser control based on input time. For NPN operation: Based on time connected to 0V. For PNP operation: Based on time connected to external power + (for all models) | ||||
Communication Interface (High-Function Model) | RS-422 or RS-485. Baud rate: 9,600/19,200/38,400/115,200bps. Data length: 8bit. Stop bit: 1bit. Parity: None. BCC: Yes. Data delimiter: CR (for all models) | ||||
Indicator Lights | Laser emission: Green LED (lights up when laser is emitted). Warning: Orange LED (lights up when measurement is unavailable due to insufficient light intensity). Output: Yellow LED (3 lights, lights up when output is active) (for all models) | ||||
Digital Display | Red LED with symbols and 5-digit display (for all models) | ||||
Protection Class | IP67 (excluding connector) (for all models) | ||||
Contamination Degree | 2 (for all models) | ||||
Insulation Resistance | ≥20MΩ (between all terminals and housing) when measured with DC 250V Megger (for all models) | ||||
Withstand Voltage | AC 1,000V for 1 minute (between all terminals and housing) (for all models) | ||||
Vibration Resistance | Frequency range: 10～55Hz (1-minute cycle). Double amplitude: 1.5mm. Duration: 2 hours each in X, Y, Z directions (for all models) | ||||
Shock Resistance | 500m/s², 3 times each in X, Y, Z directions (for all models) | ||||
Ambient Illumination | ≤3,000lx (illumination on light-receiving surface with incandescent lamp) (for all models) | ||||
Ambient Temperature | Operating: -10～+45°C (no condensation or freezing). Storage: -20～+60°C (for all models) | ||||
Ambient Humidity | Operating: 35～85% RH. Storage: 35～85% RH (for all models) | ||||
Operating Altitude | ≤2,000m (for all models) | ||||
Material | Body housing: PBT. Front cover: Acrylic. Cable: PVC (for all models) | ||||
Cable Length (High-Function Model) | 0.5m (for all models) | ||||
Cable Extension (High-Function Model) | Up to 20m with optional cable (sold separately) (for all models) | ||||
Tightening Torque | ≤0.8N·m (for all models) | ||||
Weight (High-Function Model) | Approximately 70g (excluding cable), 110g (including cable), 160g (packaged) (for all models) | ||||
Applicable Standards | EMC Directive Compliant (for all models) |
Wiring diagram
Application
