ABB LM80 Laser Level Transmitter

$1,500.00

The ABB LM80 laser level transmitter uses pulsed laser technology for reliable, non-contact measurement of granular solids and opaque liquids. It supports level measurement up to 100 m and positioning applications up to 150 m, with a narrow laser beam for accurate targeting in tall vessels and confined spaces.

Designed for demanding industrial environments, the LM80 features automatic ranging, a built-in laser pointer, and no routine calibration requirement. Its 4–20 mA analog output and relay output support continuous process monitoring and high- or low-level alarms.

🕑 Lead time: 8-10 weeks
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The ABB LM80 is an intermediate-range laser level transmitter designed to measure level, distance, and position without contacting the target material. Its pulsed laser time-of-flight technology measures visible surfaces and helps minimize interference from vessel structures and falling material.

Key Features

  • Non-contact, continuous level measurement
  • Level range up to 100 m; positioning range up to 150 m
  • Suitable for granular solids and opaque liquids
  • Narrow laser beam and built-in laser pointer for accurate alignment
  • Automatic ranging and no routine calibration requirement
  • Last Pulse Detection for light to moderate dust conditions
  • Optional heated optics to help prevent condensation
  • 4–20 mA analog output and relay output
  • Aluminum or optional stainless steel housing
  • CSA, ATEX, and IECEx hazardous-area ratings available, depending on configuration

Applications

Suitable for silos, tanks, hoppers, bunkers, feed chutes, and crushers handling grain, coal, mineral ores, coffee, plastic pellets, powders, oils, and fuels. The LM80 can also support positioning and distance monitoring for industrial material-handling equipment.

Why Choose the ABB LM80?

The LM80 combines long-range laser measurement, narrow-beam targeting, and non-contact operation to simplify installation and reduce routine maintenance in challenging industrial applications.

Q1: What is the ABB LM80 Laser Level Transmitter used for?

It measures the level of granular solids and opaque liquids without direct contact and can also monitor distance and position.

Q2: What is the maximum measuring range of the LM80?

It measures level up to 100 m (330 ft) and supports positioning applications up to 150 m (500 ft).

Q3: Can the LM80 measure bulk solids and powders?

Yes. It can measure visible surfaces of materials such as grain, coal, mineral ores, coffee, and plastic pellets.

Q4: Can the LM80 measure opaque liquids?

Yes. It is designed for non-contact measurement of opaque liquid surfaces, including oils and fuels.

Q5: Does the LM80 require regular calibration?

ABB specifies that routine calibration is not required.

Q6: What output signals are available?

The LM80 provides a continuous 4–20 mA analog output and a relay output for process monitoring and level alarms.

Q7: Can the LM80 work in dusty environments?

Its Last Pulse Detection feature supports measurement in light to moderate dust. Performance depends on dust density and whether the target surface can be detected.

Q8: Is heated optics available for condensation-prone environments?

Yes. Optional heated optics are available to help prevent condensation on the optical window.

Q9: Is the ABB LM80 suitable for hazardous areas?

CSA, ATEX, and IECEx ratings are available depending on the configuration. Confirm the required certification before ordering.

Q10: How can I request a quotation for the ABB LM80?

Provide the target material, measuring range, vessel dimensions, output requirements, installation conditions, and required approvals to help determine the appropriate configuration.

Laser Specifications & Safety Classification

Measuring Laser 905 nm near-infrared pulsed semiconductor laser;
Average power output: 12 mW, peak power output: 20 W;
Life expectancy: 25 years typical MTBF
Measuring Laser Safety Always on IEC 60825-1 Class 1M laser;
Safe for all conditions of use except when viewed through magnifying optics
Pointing Laser (Aiming) 635 nm red semiconductor laser;
3 mW continuous output
Pointing Laser Safety & Operation Intermittent IEC 60825-1 Class 3R laser;
Turns on at power-up for 2 minutes (reactivatable for commissioning via LCD2 communication device);
Safe when handled carefully with restricted direct beam viewing

Purge Air & Environmental Conditions

Purge Air Flow Must be oil-free dry air;
Recommended flow: 0.5 to 4 L/min;
Maximum pressure: 5.5 bar (80 psi)
Purge Fitting 1/8 in. NPT
Enclosure Rating IP66 / NEMA 4X (dust-proof, washable with high-pressure hose)
Hazardous Area Gas Rating Suitable for use in flammable gases or vapor hazardous locations

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