PR-53GC

Vaisala Polaris™ PR53GC Compact Process Refractometer

The Vaisala Polaris PR53GC general-purpose compact process refractometer is engineered for measuring concentrations of various liquids such as acids, alkaline solutions, alcohols, hydrocarbons, and solvents. It is suitable for direct installation in pipelines and serves production, transport, and quality-control applications within the chemical and other industries. The PR53GC is a compact device offering over 500 different concentration curves, making it adaptable for a wide array of industrial uses. This refractometer is part of the Vaisala K-PATENTS® process refractometer series, building on 40 years of experience and continuous development to represent the latest generation of digital process refractometers.

Key Features

Reliable Optical Measurement: Utilizes the refractive index (RI) for accurate concentration measurements. The RI can be measured in almost any liquid or slurry and is responsive to dissolved material. Measurements are not affected by bubbles, particles, or fibers in the process.
Broad Measurement Capabilities: Capable of measuring concentrations of sulfuric acid, sodium hydroxide, and over 500 other concentration curves.
Exceptional Long-Term Stability: Delivers years of accurate, continuous, fast, and stable concentration measurement directly in the process stream.
Low Maintenance: Inline process refractometers are easy to install and contain no moving parts requiring regular maintenance.
Accurate and Reliable: The optical measurement principle ensures accurate and drift-free measurements. An integrated temperature measurement compensates for changing process temperatures, preventing them from affecting concentration readings.
Easy Mounting: Features Type L clamp connections for direct installation into process lines. It can also be installed in a flange-mounted flow cell, allowing for an additional wash system if prism cleaning is necessary. Special alloy materials provide durability in challenging process conditions, with other custom solutions available.
Indigo520 Compatible: Can be directly interfaced or connected to a Vaisala Indigo520 transmitter. The Indigo520 provides data storage, a graphical interface, and analog and digital interfaces. The Indigo520 is essential for process control when washing is required by the application or installation. Settings and updates can be managed via the Indigo520 or Vaisala software with a USB cable.
Integrated Outputs: Includes built-in 4-20 mA and Modbus RTU outputs.

Technical Highlights

Measurement Range (Refractive Index): 1.32-1.53 nD (corresponds to 0-100 °Bx).
Accuracy (Refractive Index): ±0.00014 nD (0.1 °Bx).
Repeatability (Refractive Index): ±0.00002 nD.
Resolution: ±0.000015 nD.
Response Time (T63 with default damping): 10s.
Measurement Cycle: 1/s.
Long-term Stability: Max. 0.1% full scale / year.
Process Temperature: -40 to +150 °C (-40 to +302 °F).
Design Temperature: +180 °C (356 °F).
Operating Temperature: -40 to +60 °C (-40 to +140 °F).
Power Supply: 24 V DC nominal (9-30 V DC). Power consumption less than 1 W.
Outputs: RI, temperature, concentration, quality factor. Analog outputs: 4-20 mA. Digital outputs: RS-485 (Modbus RTU).
Maximum Cable Run (Digital): 300 m (approx. 1000 ft).
IP Rating: IP66, IP67.
Weight: 2.7 kg (5.95 lb).
Wetted Parts: Sensor head, welding ferrule made of EN 1.4404 (AISI 316L), EN 2.4660 (Alloy 20), EN 2.4819 (Alloy C276). Prism is monocrystalline Sapphire (99.996% Al₂O₃). Gaskets are modified PTFE.

Applications

The PR53GC is designed for measuring concentrations of various solutions in different industrial settings:

Acids
Alkaline solutions
Alcohols
Hydrocarbons
Solvents
Sugars/Brix
Production processes
Transport applications
Quality-control applications in the chemical and other industries.

Ideal For

Chemical and other Industries: For monitoring and control of concentrations in pipelines.
Applications with various liquid types: Including acids, alkaline solutions, alcohols, hydrocarbons, and solvents.
Installations requiring direct pipeline integration: Due to Type L clamp connections and compatibility with flow cells.
Demanding Environments: Where special alloy materials provide durability.
Processes requiring accurate and stable concentration measurements over long periods: Due to outstanding long-term stability.

Contact Us

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