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.
Key Benefits
Special wetted parts materials are available for harsh environments and aggressive process fluids.
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.
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.
