Vaisala K-PATENTS® Process Refractometer PR-23-GP/GC

Process Refractometer PR-23-GP

is an ideal all-round instrument for measuring concentrations during sugar milling and refining. The PR-23-GP sensor is installed via a flange or a clamp connection.

The measurement range covers 0-100 % by weight. The accuracy is typically ±0.1 % b.w. and the measurement is automatically temperature compensated. Low and high concentration alarms can be configured.

Because of the digital sensing technology, the PR-23-GP can measure dissolved sugar without influences from undissolved particles or crystals. Therefore, it is a reliable instrument for monitoring the syrup/mother liquor concentration in the crystallization process.

Compact Process Refractometer PR-23-GC

PR-23-GC is an industrial, compact instrument for the general industry small pipeline and bypass line applications. The PR-23-GC sensor is easy to install in the process either directly in a pipe elbow by a Sandvik coupling connection or in a straight pipe via a Wafer flow cell or a Pipe flow cell.

The flangeless Wafer flow cell is a compact alternative to traditional flanged pipe flow cells. The Wafer refers to a flow cell body that is installed between DIN, ANSI, or JIS piping flanges with bolts and nuts. The Wafer flow cell is a one-piece body construction with no welds. If the harsh environments or aggressive process fluid require a better material grade against chemical corrosion, higher alloys and special wetted parts materials are available.

The measurement range covers 0-100 % by weight. The accuracy is typically ±0.1 % b.w. and the measurement is automatically temperature compensated. Low and high concentration alarms can be configured. Because of the digital sensing technology, even large amounts of suspended solids, bubbles, or color changes do not affect the measurement or the accuracy.

Each sensor is provided with a calibration certificate comparing a set of standard liquids to the actual sensor output. The calibration and accuracy can be verified on-site with the certified Refractive Index liquids and Vaisala's documented procedure.

Features
Universal calibration of each sensor: All sensors are freely interchangeable.
Full measurement range Refractive Index nD 1.3200 – 1.5300, which corresponds to 0-100 Brix.
Completely digital system: particles, crystals and bubbles do not affect operation or accuracy.
CORE-optics: no drift, no re-calibration, no mechanical adjustments.
Ethernet connection and remote panel for data-logging and remote operation.
Process temperature range: -20°C – 150°C (-4°F – 300°F).
Fast process temperature measurement by built-in Pt1000 and automatic temperature compensation.
Dual connectivity: one transmitter can operate two sensors. A second sensor can be easily integrated later.
Easy on-site instrument verification within users’ own quality assurance system with standard Refractive Index liquids.
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Key Benefits

Designed for harsh environments
Vaisala K-PATENTS Process Refractometer PR-23-GC and PR-23-GC combines advanced CCD-camera technology with a rugged steel sensor probe. The probe is designed for demanding process conditions, high temperatures, pressure, and vibration.

Special wetted parts materials are available for harsh environments and aggressive process fluids.
Easy and cost-effective to install and operate
Process refractometer PR-23-G is installed in the main processing line, bypass line, or vessel directly with Sandvik coupling process connection, or in a straight pipe via a Wafer flow cell or a Pipe flow cell.

The models include an Ethernet-based communications solution that allows connection to computer networks and to the Internet. Real-time measurement data and diagnostic information may be obtained through this interface, and this makes it also a valuable service tool for parameter changes and software updates.

The refractometer has no lamps or moving parts requiring regular maintenance or recalibration. Users can simply 'install-and-forget', getting a low total cost of ownership.
Accurate and reliable
Vaisala K-PATENTS Process Refractometer PR-23-GC and PR-23-GP measurement is based on unique technology utilizing solid-state optics and a CCD-camera to provide a digital measurement of refractive index. The measurement accuracy is ±0.0002 RI (which corresponds to ± 0.1% by weight).

Because of the digital sensing technology, even large amounts of suspended solids, bubbles, or color changes do not affect the measurement or the accuracy.