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PRB21S

Atline process refractometer PRB21S

Accurate results for automatic and continuous process control

The Atline process refractometer PRB21S are installed in tanks or boilers using tube connections for the continuous monitoring and control of the concentration of liquids. The sample flows via the bypass into the measurement chamber made of stainless steel. The measurement prism consists of scratch-resistant sapphire and is resistant against solvents and acids.

  • Determination of refractive index in the range of nD 1.3200-1.5600 and 0-95 %Brix
  • Measurement intervals from 3 to 60 seconds selectable
  • Automatic temperature compensation (%Brix and freely definable for customer-specific products
  • Integrated sensor for temperature monitoring
  • Brix scale (sucrose, glucose, fructose and invert sugar)
  • Stainless steel measurement chamber that meets all the requirements of the food and pharmaceutical industry, CIP/SIP capable
  • Sample prism, made of scratch-proof and chemicalresistant sapphire
  • Cleaning manually or via internal process cleaning
  • Suitable for process temperatures up to 120 °C
  • Two interfaces (RS-232, analogue 0/4-20 mA); a PROFIBUS interface is optionally available
  • A display for the visual monitoring is also available

Typical applications

The process refractometer is the ideal solution for the chemical, petrochemical, automotive, aviation, metal processing, food, sugar, beverage, paper industries as well as wastewater control.

  • Characterisation tests in research and development
  • Identity test, purity control and concentration determination of raw materials, semi-finished products and end products
  • Tracking of chemical processes during production
  • Identity test and concentration determination
  • Outgoing goods inspection
  • Stability test
  • Determination of the sugar concentration
  • Determination of the sugar concentration in semi-finished products and end products
  • Determination of the solids content in solutions
  • Determination of the purity in combination with a polarimeter
  • Routine analysis with high sample throughput
  • Determination of the sugar concentration in juices and alcohol-free beverages
  • Determination of the alcohol or extract content in beer, spices, wine or spirits
  • Quality control of dairy products
  • Sewage water check

For a comprehensive overview of typical applications visit our campus review Refractometer applications.

Model specifications

PRB21S
MEASUREMENT DATA
SCALES Refractive index (nD) 
Concentration of sucrose, glucose, fructose and invert sugar [%Brix], 
User-defined
MEASUREMENT RANGE nD 1.3200–1.5600 
0–95 %Brix
MEASUREMENT ACCURACY nD ±0.0002 
±0.2 %Brix
RESOLUTION nD 0.0001 
0.1 %Brix
MEASUREMENT PERIOD 3–60 s
MEASUREMENT PRISM Sapphire
LIGHT SOURCE LED
WAVELENGTH 589 nm
TEMPERATURE DATA
TEMPERATURE COMPENSATION ICUMSA or freely definable
TEMPERATURE MEASUREMENT With integrated temperature sensor Pt100
TEMPERATURE MEASUREMENT RANGE 10–120 °C
TEMP. MEASUREMENT ACCURACY ±0.2 °C
TEMP. MEASUREMENT RESOLUTION 0.1 °C
PROCESS TEMPERATURE 10–120 °C
AMBIENT TEMPERATURE 0–40 °C
FURTHER SPECIFICATIONS
IP CODE IP65
OPERATING VOLTAGE 24 V (18–30 V)
POWER CONSUMPTION (MEASUREMENT OPERATION) 5 W without display, 6 W with display
DIMENSIONS (W X H X D) 180 mm x 190 mm x 180 mm
WEIGHT 3 kg

Technical data process refractometers (PDF, 309 KB)

Digital refractometers with peltier temperature control

Resources & Downloads

PRB21S Enquiry

For more information or to arrange a call from one of the Cea Analytical Team, please complete the contact form below.  If your enquiry is urgent, please call us on 1300 552 725.

PRB21S Enquiry

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