Laser Distance Sensors Device

LDM 41 A / LDM 42 A
Laser Distance Sensors
Applications
- Measurement of distance and position
- Diameter measurement of rolls / coils
- Level measurement
- Position control
- Security application
- Observing and measurement for elevators
- Position measurement for cranes and conveyors

Description
The LDM 41/42 A is a opto-electronic distance sensor for industrial

application, like distance and position measurement without use of

special reflectors. The target could be nearly any kind of natural

surface.The sensor works based on comparative phase

measurement. It emits modulated Laser light which is diffusely

reflected back from the target with a certain shift in phase to be

compared with a reference signal. From the amount of phase shift

a required distance can then be determined with millimeter accuracy.

A visible red Laser beam enables easier sighting. The LDM 42 A is

designed for fast measurement on white target

Characteristics
- 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 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
- risk less 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 etc. due to free scaling
- stable and simple to installing housing with protection IP 65
- Profibus DP via UNIGATE Gateway


LDM 301 A
Laser Distance Measurement Sensor

Applications

Equipment and performance features of the LDM 301 warrant

multiple possibilities of application in industrial environments

- Process monitoring in steel works and rolling mills
- Fill-level measurement
- Positioning of cranes, loading and handling equipment
- Measurement of points that cannot be accessed, for example, inside of cavities, tubes or containers
- Position monitoring of vehicles or ships

Description
The new LDM 301 Laser distance sensor measures distance

and speed of natural targets without a reflector. A reflector can

be used for increasing the measuring range. The sensor needs

only a very short time to measure; it facilitates distance

measurement to or from moving objects. The laser pulse's

time-of-flight measurement principle which it uses is specifically

suitable where great distances have to be measured and for

applications in harsh industrial environments.

With the compact design shape, simple setup and configured with

standard interfacing facilities, the LDM 301 can easily be installed.

For interfacing an analogue output, 2 digital outputs and a serial

interface RS232 or RS422 are available.

Standard LDM 301 delivery includes integral heating, a status

display and a red Laser pointer. A modular setup allows for easy

complementation with accessories or special models as may be

required in particular applications

Advantage
- Broad working range
- Great reach, also without reflectors
- Very short times to measure
- Laser class 1
- Programmable serial, digital and analogue outputs
-- Allows synchronization with external devices
- Compact design shape, IP67 protection
- Integrated red Pilot Laser, optionally telescope sign for alignment
- Easy to install and operate

More