LS 1502

LS 1502


The LS 1502 is the Ideal Laser Distance Sensor for low reflectance surfaces.


The Ls 1502 series of laser distance sensors is specifically built to measure distances with high precision for surfaces of low reflectance (e. g. asphalt, grass, oxidized steel and aluminum). The LS 1502 series is capable of measuring moving or static objects up to 3,000 meters with low reflectance. 

LS 1502’s have proven themselves in the field by measuring moving objects with a reflectance of 6% at distances of 200 meters (Ship Docking Trials). LS 1502’s have proven successful in the control of container moving trams, overhead crane positioning, load retrieval, and load setting trials.  The LS 1502 has been used on aircraft to calculate the altitude of the airframe during flight.

LS 1502 series laser range finders rely upon the proven time-of-flight measurements (also used in the LS 1502’s and LS 30) to make their distance and speed measurements. The time-of-flight method allows the LS 1502 to measure moving objects even with less than 3% reflectance at distances of 50 meters. 

The fully customizable LS 1502 modular configuration allows these laser range finders to be easily adapted to the harshest environments while maintaining high precision and accuracy. The ability to select either fixed or variable sampling rates is accommodated by this modularity. 

The LS 1502 has the entire connectivity options associated with the other LDM series distance sensors enabling (RS-232, RS-422, RS-485, Profibus, and SSI) along with the ability to switch between analog and digital output.  Their chassis have been EMI hardened, o-ring sealed, and made both water and abrasive resistant in order to survive real world applications (IP67 / NEMA 6).

The compact, modular design combined with existing or customizable options enables the LS 1502 to be retrofitted into existing systems as easily as new builds for real time, real world, distance and speed measurements with low reflection bodies under critical operating conditions.



Precise: Measurements ± a few millimeter.

Easy to use:  Visible laser enables naked eye alignment of range finding system. 

Flexible: With their serial interface, Profibus DP, individually configurable switching, multiple operating modes and analog outputs.

Robust: Case hardened chassis with o-ring seals to keep dust, water spray, and the elements out of the optical system.  Optional internal heating elements extend operating range from -40 oC to +50 oC. 

Economical: Non-contact measurements reducing wear, extending MTBF, service life, and maintenance.


Fields of application

Automation: Liquid and solid level measurement, process control and position monitoring.

Metrology: Distance and position measurements (thickness, length, height,  and depth).

Process control: Lift system positioning, water level / lock door operation.

Logistics: Position for goods, transport and loading systems, conveyor systems, levels, collision protection, part detection.


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