LDM 41/42 P - Laser Distance Measurement Sensor

The LDM 41/42 P Laser Distance Measurement Sensor with Profibus DP interface is designed for distance measurement applications in an industrial environment. The LDM 41/42 P works based on comparative phase measurement. To achieve this, it emits a visible Laser beam with different modulation frequencies. The target being measured returns diffusely reflected light that is subsequently compared with a reference signal. Finally, a microprocessor uses the recorded phase shift to calculate a required distance with mm accuracy. The sensor LDM 41 P distinguishes itself through a high precision as well as a big independence of the surface of the measured object. The LDM 42 P is design for fast measurement on a white target. The red, well visible Laser beam allows a simple alignment.

Applications

• Supervision of crane and conveyors
• Distance and position measurement
• Level-measurement
• Supervision of security-relevant parts
• Supervision of lift systems / lift level measurement / elevator positioning
• Positioning control
• Diameter measurement of coils

Characteristics

• Millimeter precise measurement at various surfaces (LDM 42 P only for white surface)
• Long range reflector-less distance measurement, with additional reflectors mounted onto target over 100 m
• High availability under outdoor temperature conditions with high precision
• Big supply voltage range 10 V until 30 V DC
• Safe use because of Laser Class 2
• Simple alignment with a visible Laser beam
• RS 232 data interface for programming
• Simple parameter setup with a PC or laptop
• Measured values are displayed in meters, decimeters, centimeters, feet, inch... and different resolutions due to free scaling
• Stable and easy to install enclosure with protection grade of IP 65
• Direct connection to Profibus DP
• Setup of measurement mode, inside temperature measurement, switch-off Laser (Stand-by) controlled by Profibus control bytes.