VAISALA POLARIS
Polaris™ PR53W Valve-Body Process Refractometer
The Vaisala Polaris PR53W valve-body process refractometer is designed to measure concentrations of aggressive chemicals, such as sulfuric acid, hydrochloric acid (HCI), and sodium hydroxide (NaOH) in production pipelines such as in the chemical, biochemical, and pharmaceutical industries.
The PR53W is mounted in a membrane‑lined valve body that has no metallic wetted parts. This allows convenient flange mounting to 2 inch ANSI, JIS, and DN50 flanges.
- ETFE‑lined valve-body flow cell with non-metallic wetted parts, for aggressive chemicals in pressurized pipelines
- Reliable optical concentration measurements with refractive index
- Hydrochloric acid, sulfuric acid, amino acid, potassium hydroxide, and more than 500 concentration curves
- Measurement not affected by bubbles, particles, suspended solids, or color
- ANSI, JIS, and DIN flanges for 2 inch process lines
- Indigo520-compatible
- Built-in 4–20 mA and Modbus RTU outputs
- The optical measurement is based on the refractive index (RI).
- RI can be measured from practically any liquid and it responds to dissolved material. Because bubbles, particles, or crystals in the process do not affect measurement, RI allows accurate measurement for different chemicals, as well as slurries.
- Typical applications include different chemical mixing and monitoring installations in the fine chemical and semiconductor industries.
- In addition to a wide selection of product options, it is possible to customize the product for specific needs.
- The outstanding long-term stability provides years of accurate, continuous, fast, and stable concentration measurement directly in the process stream.
- Inline process refractometers are easy to install and have no moving parts that require regular maintenance.
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