Vaisala K-PATENTS® Refinery Process Refractometer PR-23-RP

Vaisala K-PATENTS Process refractometer PR-23-G is a heavy-duty refinery model designed to meet the unique requirements of the refining and petroleum industries. Typical applications include accurate liquid concentration measurements in, e.g. sulphuric acid in alkylation, glycol, amines or Potassium hydroxide (KOH) in gas treating, multi-product (crude oil, fuel oil, diesel) interfaces in custody transfer operations and lube oil in refining process.

The Refractometer sensor is installed in the process, either directly by welding stud, or via a 1 inch, 2 inch or 3 inch cross flow cell. Due to the sensor's rugged, innovative non-weld sensor body, and self-cleaning or optional automatic wash system capabilities, the PR-23-RP functions accurately and reliably in harsh refinery conditions. Intrinsically safe and hazardous area certification is provided for hazardous areas.

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 documented procedure. 

One-piece Refractometer sensor body construction with no welds. Installed either directly by welding stud, or via a 1 inch, 2 inch or 3 inch cross flow cell.
ASME Code compliance: The main physical properties have been designed in accordance with ASME Section VIII, Division 1 and Division 2.
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 % by weight.
Completely digital system: particles and bubbles do not affect operation or accuracy.
Patented CORE-optics (US Patent No. US6067151): no drift, no re-calibration, no mechanical adjustments.
Ethernet connection and remote panel for data-logging and remote operation.
Process temperature range: -40°C – 150°C (-40°F – 302°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.
Self-cleaning or optional automatic wash system capabilities,
Intrinsic safety and hazardous area approvals available.
+ Show more

Key Benefits

Designed for harsh environments
Vaisala K-PATENTS Refinery Process Refractometer PR-23-RP combines advanced CCD-camera technology with a rugged steel sensor probe. The probe is a non-weld sensor body model for large pipe and vessel installations. 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-RP is installed in the main processing line, bypass line or vessel either directly by welding stud, or via a 1 inch, 2 inch or 3 inch cross flow cell

PR-23-RP includes an Ethernet based communications solution which 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.
Industry expertise and supply of engineered solutions, services and vendor documentation
The refinery instrument models range from compact probe models for small pipeline and bypass lines to rugged heavy-duty long probe versions for large pipe line, vessel and reactor installations.

When standard models are not sufficient to fulfill requirements, please consult the factory for engineered solutions, e.g. special wetted materials or custom mounting accessories and process connections.

Vaisala also provides full range of start-up, commissioning and technical support services to our customers. Our oil and gas industry expertise includes supply of extensive vendor documentation that is tailored and applied to each contract and client specific data requirements.