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Online Refractometer

Online Refractometer
Online Refractometer
Product Code : 16
Product Description

Enjoy the simplicity of refractive index measurement without maintenance or adjustments

  • Soldered optics: no serviceable sealing with full CIP/SIP capability
  • Full range sugar scale instrument 0 to 100%
  • Accomplishes hygiene requirement 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)

Key Features


  • 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

Never requires adjustment

  • Proprietary calibration and adjustment procedure
  • Sensor operates with its factory settings for its entire service

Enjoy high accuracy

  • Efficiently handles from 0 to 100 weight concentrations and provides refractive index and concentration results comparable to those of laboratory refractometers
  • 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 ot meet the ASME Bioprocessing Equipment Standard
  • CIP and SIP up to 145 oC

Intelligent measurement

  • Intuitive touchscreen makes it easy to set
  • Meets NAMUR NE107 standards and provides user-friendly diagnostics based on standard status categories

Various communication possibilities

  • Full connectivity by fieldbus communication (PROFIBUS DP, Modbus TCP, PROFINET, DeviceNet or EtherNet/IP protocols) or
  • Classic analog outputs (4-20mA) and digital-IOs available

Technical Specifications :

Refractive Index

Range 1.3100 to 1.5400
nD+/-0.0002 (equivalent to +/- 0.1% mass)
nD +/-0.0001 (equivalent to +/- 0.05% mass)


Anton Paar's proprietary calibration routine using high-purity water and commercial nD references

Optic material



CMOS line sensor; 2048 elements

Light source

LED 589 nm

Temperature control method

Automatic Temperature Compensation;
Integrated PT-100

Ambient temperature range

-20 oC to 40 oC

Process temperature absolute

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

Pressure range

100 mbar to 16 bar
(10 bar @ > 120 oC)


approx. 7 kg

Process wetted parts, standard

Stainless Steel No. 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


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"


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