OLR Series 1000

The first on-line rheometer

The OnLine Rheometer (OLR) is designed to continuously measure, plot and report the flow properties of process liquids in the pipe. The OLR will provide accurate rheological data in real time so that liquids during manufacturing and processing are produced and maintained within specification – first time and every time. The OLR is designed for use in a pipe, and it continuously measures and relays the data to the process operator – either through SOLR the software for the OLR or through the factory PLC (Process Logic Controller). The plant operator or engineer can input specific flow property data for the product being tested to establish the optimum production specification parameters. The OLR monitors the process and displays the product conformance throughout the manufacturing and production process.

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olr1000 product page

PRINCIPLES OF OPERATIONS

The OLR uses squeeze-flow technique – it measures storage and loss moduli by imposing a small cyclic deformation on a liquid sample at a variety of frequencies, from 1-100 Hz. Quality control parameters and user interface at plant operator level are based on |η*| (complex viscosity [Pas]), as measured by the OLR. The response of the liquid is measured and displayed in terms of G¢ (storage modulus [Pa]), G¢¢ (loss modulus [Pa]), δ (phase angle [Degrees]), and |η*| the same as with a conventional laboratory rheometer but with enhanced range. A typical output is shown in the figure on the right.

INSTALLATION EXAMPLES

The OLR can be installed In-line,
or in a side loop in an online (sample
returned to the main flow stream)
or at-line configuration where the
sample is discarded or continues
to other quality control steps.

APPLICATION AREAS

  • Food
  • Cosmetic and Personal care
  • Petrochemicals
  • Pharmaceuticals
  • Polymers
  • Surface Coatings
  • Advanced Materials

OLR ADVANTAGES

  • Fast and Reliable Real Time Results 
  • Low Maintenance 
  • Out of Specification Diagnosis 
  • Plug-and-Play Installation 
  • Precise and Robust Sensor System 

Software (SOLR)

SOLR provides flexibility – you determine from the drop down menu what you continuously measure, plot and report.

The OLR is used in conjunction with custom developed software specific for the sensor system. The SOLR has three key functions:

  • Set up of process monitoring and quality control parameters
  • Monitoring and control of process either through SOLR or through the plant PLC
  • Out-of-specification product diagnosis

technical specifications

Frequency range1 – 100 Hz
Viscosity measuring range0.25 – 200,000 Pa.s
Force range0 – 44.48 N
Temperature Range-10 – 110 °C
Pressure Range0.05 – 10 Bar a
Pressure range0.05 – 30 Bar a
Temperature measurementRTD PT100 Ohm, Class A

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GALLERY

olr1000 images 01
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PUBLICATIONS

Oscillatory Squeeze Flow for Online Rheometry
D. Konisberg, T. Nicholson, P. Koria, E. Owen, T. Kealy and P.K. Bhattacharjee
The XVIth International Congress on Rheology, Lisbon

Online process rheometry using oscillatory squeeze flow
D Konigsberg, TM Nicholson, P Halley, TJ Kealy, PK Bhattacharjee
Applied Rheology 23, 35688.

APPLICATION NOTES 

Measurement of flowing sunflower oil using the OnLine Rheometer

Measurement of greases using the OnLine Rheometer

Measurement of printing inks using the OnLine Rheometer

In-line, Real time Rheology of Bakery Shortening