With advanced timing and sophisticated signal processing, the LM80 is accurate to 100 meters (330 feet) for level measurement and 150 meters (500 feet) for positioning.

Features
Maintenance-free, non-contact continuous level transmitter.
Level measurement range up to 100 meters (330 feet)
Positioning range up to 150 meters (500 feet) Simple and intuitive commissioning
No calibration required
Continuous level monitoring of granular solids and opaque liquids
Measure solids and opaque liquids from any angle
Load pulse detection for measurement in light and medium dust conditions
Built-in laser pointer for precise alignment in narrow or tall vessels
Automatic range adjustment for measuring any type of liquid level
Heated glass prevents fogging
No beam divergence = no false echoes
Rugged aluminum housing
CSA, ATEX and IECEx certified for potentially explosive atmospheres
Options:

Various mounting options
Configuration aid (LCD2)
Non-condensing glass (heated lens)
Stainless steel housing
Triple fixture process connection