ABB LM80 Laser Level and Distance Transmitter Overview

Brand Background

ABB is a global leader in electrification, automation, robotics, and measurement solutions. Within continuous process measurement, ABB’s Level Measurement product portfolio is recognized worldwide for non-contact sensing technologies. ABB’s laser level transmitters provide long-range, non-contact level and distance measurements across bulk solids, opaque liquids, and challenging industrial containment environments without physical contact or wave propagation interference.

Model Overview: LM80 (ABB K-TEK Laser Level Transmitter)

The ABB LM80 is a non-contact, high-performance Laser Level and Distance Transmitter engineered for long-range measurement of solids, liquids, and opaque materials.

Utilizing laser time-of-flight technology, the LM80 emits narrow, non-diverging infrared laser pulses that reflect directly off target surfaces back to the optical receiver. Because the laser beam has almost zero beam divergence, the LM80 operates in narrow silos, tight vessel openings, and deep sumps without interference from internal vessel obstructions, structural beams, or sidewall buildup.

ABB LM80 Laser Transmitter

Key Technical Specifications and Parameters

• Manufacturer: ABB (Level Measurement / K-TEK Products)

• Model Designation: LM80

• Product Type: Non-Contact Laser Level and Distance Transmitter

• Measurement Principle: Laser Time-of-Flight (Laser diode emission)

• Measurement Range:

  • Bulk Solids / Opaque Surfaces: $0.5\text{ m to }30\text{ m}$ ($1.5\text{ ft to }100\text{ ft}$)

  • Opaque Liquids / Position Monitoring (with reflector): Up to $100\text{ m}$ ($330\text{ ft}$)

• Accuracy: $\pm 38\text{ mm}$ ($\pm 1.5\text{ in}$) standard distance accuracy across operating range

• Beam Divergence: Less than $0.2^\circ$ (narrow, concentrated beam spot)

• Output Communications: $4\text{ to }20\text{ mA}$ HART, RS-485, Modbus

• Power Supply: $24\text{ VDC}$ nominal ($18\text{ to }32\text{ VDC}$ range) or $100\text{ to }240\text{ VAC}$ options

• Housing & Enclosure Rating: Heavy-duty powder-coated aluminum or 316L stainless steel; IP66 / NEMA 4X rated

• Process Temperature: $-40^\circ\text{C to }+60^\circ\text{C}$ (up to $+280^\circ\text{C}$ with optional cooling tubes and specialized process flanges)

• Hazardous Area Approvals: ATEX, IECEx, FM, CSA intrinsically safe and explosion-proof certified for dust and gas zones

Operating Industries

The ABB LM80 laser transmitter is widely deployed across process industries handling dry bulk materials, slurries, and opaque liquids:

• Mining, Minerals & Metals: Ore storage silos, crusher hoppers, conveyor transfer points, and stockpile height tracking.

• Cement & Aggregates: Cement storage silos, clinker pits, limestone hoppers, and aggregate bins.

• Chemicals & Petrochemicals: Carbon black storage, plastic pellet silos, chemical powder hoppers, and opaque liquid tanks.

• Power Generation & Utilities: Coal bunker level monitoring, fly ash silos, biomass hoppers, and slurry tanks.

• Pulp & Paper: Wood chip silos, sawdust hoppers, lime kilns, and pulp storage vessels.

• Food & Beverage Processing: Grain silos, sugar storage vessels, flour bins, and animal feed hoppers.

Common Usage Scenarios

1. Tall Silo & Deep Bunker Level Measurement

   Monitoring bulk solids (grains, coal, cement, plastic pellets) in narrow, tall silos where radar or ultrasonic beams scatter off structural internal supports or vessel walls.

2. Crusher & Hopper Blockage Prevention

   Measuring rock or ore level in primary crushers and chutes to prevent material jams and optimize continuous conveyor feeding.

3. High-Temperature Material Monitoring

   Utilizing optional dust tubes and cooling jackets to measure hot materials inside clinker coolers, lime kilns, or furnace feed bins.

4. Long-Distance Position & Displacement Sensing

   Tracking the linear position of heavy industrial machinery, such as tripper cars, overhead cranes, or stacker-reclaimers along continuous rails.