LDM41 A Datasheet0 pages

LDM 41/42 A
Laser Distance Measurement Sensor
Angewandte Sensortechnik
Theory of Operation
The LDM 41/42 A Laser Distance Measurement Sensor is designed for mobile and stationary distance
measurement in a industrial environment. The LDM 41/42 A works based on comparative phase
measurement. To achieve this, it emits visible laser beams in different 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 A distinguishes itself through a high precision as well as a big independence of
the surface of the measured object. The LDM 42 A 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
Expletive-stand-measurement
Supervision of security-relevant parts
Supervision of walking beam systems / stroke length measurement / position of lifts
Position control
Diameter measurement of coils and rolls
Characteristics
1
millimetre precise measurement at various surfaces (LDM 42 A only for white surface)
long range reflector-less distance measurement, with additional reflectors on the object over 100m
1
with additional reflectors mounted onto target
high availability under in the high temperature area with high precision
big supply voltage range 10 V until 30 V DC
optional heating (24 W at 24 V operating voltage, option /h)
low risk use because of laser class 2
simple alignment with a visible laser class
bi-directional data-interface, switching and analogue output
simple setup for parameter with a PC or laptop
measured values are displayed in meters, decimetre, centimetre, feet, inch... and different
resolutions due to free scaling
stable and simple to installing housing with protection IP 65
various accessories; device versions with field bus connection
e.g. 3M, self adhesive foil matte white, or with greater distance with reflective foil type 3290
ASTECH Angewandte Sensortechnik GmbH
No-contact measurement techniques for length, width, distance, position, velocity; laser; CCD-cameras
Schonenfahrerstr. 5, D-18057 Rostock, Germany
Phone +49 381 / 44073-0 FAX 0381 / 44073-20 e-mail info@astech.de Internet www.astech.de