PROCESS REFRACTOMETER – Polaris™ PR53SD

Process Refractometer – Polaris™ PR53SD

Product Overview

The Vaisala Polaris™ PR53SD is a state-of-the-art inline refractometer specifically designed for concentration measurement in demanding industrial environments, particularly in the pulp and paper industry. Featuring a unique Safe-Drive system, the sensor can be safely inserted or removed without halting the process—maximizing operator safety and minimizing downtime.

Technical Specifications

• Refractive Index Range (nD): 1.32 – 1.54

• Accuracy: ±0.00014 nD (equivalent to ±0.1 °Bx)

• Process Temperature: –40°C to +170°C

• Maximum Process Pressure: 35 bar (507.6 psi)

• Wetted Materials: Stainless steel EN 1.4462, monocrystalline sapphire prism, PTFE seals

• Communication: Analog 4–20 mA, Modbus RTU

• Protection Rating: IP66/IP67, NEMA Type 4X

• Power Supply: 24 V DC (9–30 V DC), <1 W consumption

Key Features

• Safe-Drive System: Allows safe insertion and retraction of the sensor while the process is running, reducing risk and downtime.

• High-Precision Measurement: Based on optical refractive index, unaffected by gas bubbles, solid particles, or solution color.

• Seamless Integration: Compatible with Vaisala Indigo520 transmitter and Insight PC software for easy configuration and real-time monitoring.

• Robust Design: Withstands high temperatures and pressures, ideal for tough industrial conditions.

Benefits

• Operational Safety: The Safe-Drive system ensures safe sensor maintenance or replacement without interrupting operations.

• Process Optimization: Real-time concentration data supports efficient control and adjustment of production processes.

• Cost Efficiency: Reliable, low-maintenance design reduces maintenance costs and unplanned downtime.

Applications

• Pulp and Paper Industry: Monitoring concentration of dissolved solids in black liquor, green liquor, and other process liquids.

• Chemical Industry: Precise monitoring of chemical concentrations in critical processes.

• Food and Beverage Industry: Concentration control in production of food and beverage products.

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Reference link: https://www.vaisala.com/en/industrial-measurements/products/liquid-concentration/vaisala-Polaris-pr53sd-process-refractometer