PR-53 Series

The Vaisala Polaris™ PR53 series process refractometers offer a range of solutions tailored for diverse industrial applications.
Here are the key differences between the PR53AC, PR53AP, PR53GC, PR53GP, PR53M, and PR53SD versions.

Key Differences Between PR53 Versions

Vaisala Polaris™ PR53AC Sanitary Compact Process Refractometer

• Product Description: Sanitary compact refractometer for inline liquid concentration measurements (e.g., Brix) in food, beverage, dairy, and brewery industries. Features 3-A and EHEDG certifications.
• Key Features: 3-A and EHEDG certified, easy installation with sanitary clamp, various flow cells available, compact design.
• Applications: Food, beverage, dairy, brewery (Brix, Total Solids, Oechsle, Baume, Plato).
• Ideal For: Hygienic processes, compact inline installations, general food and beverage applications.

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Vaisala Polaris™ PR53AP Sanitary Probe Process Refractometer

• Product Description: Designed for food and beverage, dairy, and brewery industries, measuring liquid concentrations like Brix in applications such as jam cookers and mixing tanks. Features 3-A and EHEDG certifications and a long probe for high process temperatures.
• Key Features: 3-A and EHEDG certified, sanitary and tank bottom flange couplings, suitable for hot processes and large tanks.
• Applications: Food and beverage, dairy, brewery (Brix, Total Solids, Oechsle, Baume, Plato).
• Ideal For: Hygienic applications, hot processes, tank installations.

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Vaisala Polaris™ PR53GC Compact Process Refractometer

• Product Description: General-purpose compact refractometer for measuring concentrations of acids, alkaline solutions, alcohols, hydrocarbons, and solvents. Suitable for direct installation in pipelines in chemical and other industries.
• Key Features: Compact size, Type L clamp connections for pipelines, various flow cells available, special alloy materials for demanding environments.
• Applications: Acids, alkaline solutions, alcohols, hydrocarbons, solvents in chemical and general industrial processes.
• Ideal For: Compact installations, pipelines, general chemical processes.

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Vaisala Polaris™ PR53GP Probe Process Refractometer

• Product Description: General-purpose probe refractometer for sugars/Brix, acids, alkaline solutions, hydrocarbons, and solvents. Installable directly in pipelines or tanks for sugar, chemical, and petrochemical industries.
• Key Features: Clamp and flange connections, optional cooling cover for high temperatures and pressures, durable materials for demanding environments.
• Applications: Sugars/Brix, acids, alkaline solutions, hydrocarbons, solvents, crystallizers, wet scrubbers, reactors, blending, distillation.
• Ideal For: Sugar, chemical, and petrochemical industries, in-tank or in-pipeline installations, processes with crystals.

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Vaisala Polaris™ PR53M PTFE-Body Process Refractometer

• Product Description: Specifically for aggressive chemicals like hydrochloric acid, sodium hydroxide, sodium chloride, and sulfuric acid in chemical and semiconductor industries. Features an integrated ultra-pure PTFE flow cell with no metallic wetted parts.
• Key Features: Non-metallic wetted parts (PTFE and sapphire), minimises contamination risk, suitable for aggressive chemicals.
• Applications: Aggressive chemicals (HCl, NaOH, NaCl, H₂SO₄), chemical and semiconductor industries, chemical slurries.
• Ideal For: Highly corrosive media, high purity applications, minimizing contamination.

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Vaisala Polaris™ PR53SD Safe-Drive Process Refractometer

• Product Description: Retractable instrument for safety-critical measurements in pulp mills, such as firing liquor concentration. Allows insertion and removal while the process is running.
• Key Features: Safe-Drive retractor system for hot-tapping, SAF 2205 material for demanding environments, prism wash systems, complies with BLRBAC safety standards.
• Applications: Pulp mills (black liquor, green liquor, filtrates), chemical recovery, fiberline, evaporation, slaker, lime operations.
• Ideal For: Safety-critical measurements, pulp and paper industry, hot-tapping applications.

Read about PR-53W

All PR53 versions share common benefits such as reliable optical measurement based on refractive index, broad measurement capabilities (often over 500 concentration curves), outstanding long-term stability, low maintenance, accuracy, and compatibility with the Vaisala Indigo520 transmitter and integrated 4-20 mA and Modbus RTU outputs. The key differences lie in their specific design adaptations for hygienic applications, aggressive chemicals, high temperatures, compact installations, and safe retraction from live processes.