Recommended Results

  • L-Rix 510 Inline Refractometer in the pie
  • L-Rix 510 Varivent and Tri-Clamp connection
  • L-Rix 510 with OT

L-Rix 510/520 Inline Refractometer

Enjoy the simplicity of refractive index measurement without maintenance or adjustments

  • Soldered optics: no fluid seals, maintenance-free with full CIP/SIP capability
  • Full-range sugar scale instrument: 0 % wt to 100 % w
  • Accuracy up to ±0.0001 nD (±0.05 °Brix)
  • Meets hygiene requirements according to the European Hygienic Engineering & Design Group
  • Integrated display and evaluation unit with standard industrial interfaces
  • Fulfills the NAMUR recommendation NE 107 (self-monitoring and diagnosis)
Get in touch Document Finder

Key Features

No servicing and operating costs

  • Industry-leading soldered optics need no liquid seals and ensure maintenance-free operation
  • You benefit from "install and forget" simplicity and years of continuous performance
  • The sensor operates with its factory settings for its entire lifetime

Enjoy high accuracy and minimize downtime

  • Efficiently handles from 0 to 100 weight concentrations and provides refractive index and concentration results comparable to those of laboratory refractometers
  • Accuracy up to ±0.0001 nD (±0.05 °Brix)
  • Once CIP/SIP routines are completed, the sensor reactivates in just minutes to minimize downtime

Ideal for pharmaceutical, food, and beverage applications

  • EHEDG-certified
  • Designed to meet the ASME Bioprocessing Equipment Standard
  • CIP and SIP up to 145 °C

Cost-efficient monitoring and control with integrated HMI

  • Quick and easy set-up with the built-in touchscreen interface
  • Meets NAMUR NE 107 standards and provides user-friendly diagnostics based on standard status categories
  • Full connectivity by fieldbus communication (PROFIBUS DP, Modbus TCP, PROFINET, DeviceNet or EtherNet/IP protocols) or
  • Classic analog outputs (4-20 mA) and digital IOs available

Technical Specifications

 L-Rix 510 L-Rix 520
Refractive Index

Range 1,3100 to 1,5400 
(equivalent of 0 % mass to 100 % mass)

nD ±0.0002 (equivalent to ±0.1% mass)

nD ±0.0001 (equivalent to  ±0.05 % mass)

Range 1,3100 to 1,355 
(equivalent to 0 % mass to 15 % mass)

nD ±0.0001 (equivalent to ±0.05 % mass)

nD ±0.00005 (equivalent to ±0.025 % mass)

Calibration Anton Paar’s proprietary calibration routine using high-purity water and commercial nD references
Optic material Sapphire
Detector CMOS line sensor; 2048 elements
Light source LED 589 nm
Temperature control method Automatic temperature compensation; Integrated Pt-100 
Ambient temperature range -20 °C to 40 °C
Process temperature

-20 °C to 100 °C  
CIP/SIP up to 145 °C for 30 min

Pressure range absolute 100 mbar to 16 bar (10 bar @ >120 °C)
Weight approx. 7 kg
Process wetted parts, standard

Stainless steel 1.4404 and 1.4542

Enclosure protection IP65; IP67 / NEMA 6P
Approvals and certifications

EHEDG (European Hygienic Equipment Design Group) certified
Hygienic design according to 3-A standard 46-02 

Fluid seals None
Analog/digital communication
Analog output 2 x 4 to 20 mA
Digital output 1 x
Digital input 1 x
Fieldbus communication

Modbus TCP

Process connections

Tuchenhagen VARIVENT® Type N
Tri-Clamp® 3''

* Valid for process temperatures between 3 °C and 25 °C

Application Reports