Density and Sound Velocity Concentration Sensor:
L-Com 5500
- Highly accurate concentration sensor
- Ideal for measuring 3-component mixtures
- Modular and compact minimizes integration effort and costs
- Easy commissioning and operation
- No consumables, no maintenance
L-Com 5500 is a smart density and sound velocity sensor combined into one instrument with an accuracy of 0.05 kg/m³ for density measurement and 0.1 m/s for sound velocity measurement. This lets you conduct concentration measurements of 3-component mixtures with just one instrument. This concentration sensor meets the requirements of a wide variety of applications in the chemical, beverage, and pharmaceutical industries.
Key features
One concentration sensor to measure 3-component mixtures
- Enjoy the benefits of an L-Dens 7500 density sensor and an L-Sonic sound velocity sensor in one instrument to measure 3-component mixtures in different industries
- Use L-Com 5500 for a range of applications like
- Breweries: measure alcohol and extract concentration in beer
- Chemical industry: measure formaldehyde-methanol-water concentration in formaldehyde production, where in this application the explosion proof version is used.

Accuracy and reliability under changing process conditions
- Get the best accuracy on the market
- 0.05 kg/m³ for density measurement
- 0.1 m/s for sound velocity measurement
- The metallic sensor technology, without thermal insulation by plastic coating, enables exact concentration measurements – even with temperature fluctuations

One instrument, three installation options
- Know you won’t need maintenance or consumables since there’s no moving parts
- Install the concentration sensor with low integration costs thanks to its modular design
- Benefit from flexible installation options: inline, bypass, or tank installation
- Use our small pumps – integrated into the instrument unit – that are controlled by the instrument itself for either extremely fluctuating or no flow
- Do this even in hazardous areas with the Inline Pump 300 Ex d

Easy commissioning, simple operation
- Connect the concentration sensor to the powerful mPDS 5 evaluation unit or combine it with the smart transmitter Pico 3000
- Choose from a variety of communication protocols, according to your needs
- Start measuring immediately after installation

In-house experts ready to help
- Specialized team of experts leverages its deep industry knowledge to develop solutions for any application
- Rely on our comprehensive database and application know-how for a wide range of industries
- Send your sample to our lab for a tailored formula that fits your needs if your application isn’t in our database

Specifications
L-Com 5500 | |
Measuring range | Max. 2000 kg/m³ 800 m/s to 2000 m/s |
Standard adjustment range density Standard adjustment range sound velocity | 700 kg/m³ to 1200 kg/m³ 800 m/s to 2000 m/s |
Material of the wetted parts | Alloy C-276 |
Accuracy density in the adjusted range Repeatability sound velocity in the adjusted range | 0.05 kg/m³ 0.01 m/s |
Process temperature | -25 °C to +125 °C (145 °C for max. 30 min.) |
Ambient temperature (non-Ex versions) | -25 °C to +65 °C (without Pico 3000) |
Process pressure absolute | Max. 50 bar |
Recommended flow rate | 100 L/h to 500 L/h |
Communication | Can be combined with Pico 3000, Pico 3000 RC, and mPDS 5 |
Process connections | Adapter for inline, bypass, and tank installation Flange: EN, ANSI, JIS, Tri-Clamp, Varivent®; G 3/8”, Tube OD 12 mm; others on request |
Ex-Version | ATEX, IECEx, cQPSus, INMETRO |
Dimensions: non-Ex version (L x W x H) |
258 mm x 142 mm x 192 mm |
Anton Paar Certified Service
- More than 350 manufacturer-certified technical experts worldwide
- Qualified support in your local language
- Protection for your investment throughout its lifecycle
- 3-year warranty
Documents
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Beverage | Beer | Complete your Beer Analysis Application Reports
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Beverage | Soft Drinks | Complete Your Soft Drink Analysis Application Reports
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Beverage | Soft Drinks | Online Process Measurement in the Soft Drink Industry Application Reports
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Chemistry | Automatic product identification during unloading Application Reports
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Chemistry | CH2O | Online measurement of formaldehyde and methanol concentration Application Reports
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Chemistry | Concentration Measurement Application Reports
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Process Engineering Solutions | Overview Brochures
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DEKRA Japan Ex Certificate | L-Com 5500 HAS Ex d Certificates
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EU Declaration of Conformity | L-Com 5500 Ex d Certificates
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