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Process Viscometers

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Fluid viscosity measurement

Hydramotion is a recognised technology leader in the field of in-line viscosity analysis. Over the years is has developed and perfected an industrial sensor design using mechanical vibration / resonance

Application

Viscosity is used in the food and chemical industries for either direct control of processes and process optimisation or as a quality control parameter. Other industrial areas where viscosity is an important process parameter are biotech, oil, plastics, paint, and printing.

Vibrating viscometers are better suited for measurements in non-Newtonian fluids, such as pseudoplastic liquids. Hydramotion process viscometers measure the viscosity in such liquids with the same repeatability as in Newtonian liquids, which makes them ideal for proces monitoring and control in this common type of fluid.

Sensors and processors

The sensors are solid state with an all welded design and very robust. They can be supplied in various materials (the standard material is 316 stainless steel). The shear wave only penetrates a few millimetres into the fluid from the surface of the sensor, so the sensor can be mounted close to the wall of a pipe or tank.
The processor can accept a temperature signal input that enables the correction of the viscosity to a reference temperature. The processor is connected to the transducer by a standard 3-core screened cable and it can be located up to 1000 meters from the sensor.

Viscometers

There are general purpose viscometer models designed to meet a wide range of application requirements in industry as well as viscometers designed for specific applications

Vibration / Resonance

Measuring viscosity in fluids

Viscosity is a measure of the resistance of fluids to the flow. A vibrational or resonance viscometer is used for continuous direct measurement of viscosity in pipes and/or tanks. The instrument works by creating a special kind of wave in the fluid.

Choice of wave type is important, as the viscosity can be determined only by measuring under shear conditions. The solid stainless steel sensor is immersed in the fluid and made to twist back and forth microscopically at a high frequency. As the surface of the sensor shears through the liquid, energy is lost as a result of overcoming internal friction in the fluid.

The viscosity of the fluid is derived from the measurement of this lost energy by the instrument electronics. Higher viscosity causes a greater loss of energy and therefore a higher reading and vice versa.

Proces Viscometers

XL7 Process Viscometer

  • The XL7 process viscometer is for general purpose in-line measurement of viscosity in production plants
  • Typical Measuring range 0-10.000 cP (mPa-s)
  • Complete Measuring range up to 100.000 P (Pa-s)
  • Mounting with flange, thread, hygienic clamp or hygienic RJT Union
  • Temperature range -40 degC to 150 degC
  • No moving parts – no maintenance
  • No maintenance required
  • High accuracy and repeatability
  • Used with Signal Processor VP550

XL7 Process Viscometers sensors for high Temp. and Ex

  • Optional High temp version to 450 oC
  • Optional ATEX certified Intrinsic safe viscometer version for Ex applications

ViscoJet 100 stand alone Process Viscometer

  • ViscoLink data viewing and logging software for configuration and display
  • Measuring range 0-10.000 cP (mPa-s)
  • Analog output 4-20 mA and digital output 485 Modbus serial link
  • Mounting ¾ Inch or 1 Inch BSPP / NPSF thread
  • Temperature range -20 degC to 130 degC
  • Integrated temperature sensor for viscosity correction to standard conditions.
  • No moving parts – no maintenance
  • No maintenance required
  • High sensibility and repeatability

Reaction vessel Viscometer

ReactaVisc 300 Reaction Vessel Viscometer

  • A compact viscometer for laboratory reaction vessels with fluid volumes of less than 10 litres
  • It is ideal for monitoring variations in viscosity during chemical reactions such as polymerization
    or esterification.
  • Measuring range 0-500.000 cP (mPa-s)
  • Compression fitting with PTFE tapered ferrule. Minimum size NS29/32
  • Variable immersion depth
  • Temperature range -40 to 150 degC
  • Used with Signal Processor VP550L
  • Optional High temp version to 250 degC
  • Optional ATEX certified Intrinsic safe Ex ia version for Ex applications

Laboratory Automation Viscometer

goVisc 500 Laboratory Automation Viscometer

  • Stand-alone operation
  • ViscoLink data viewing and logging software for configuration and display
  • Measuring range 0-10.000 cP (mPa-s)
  • Integral temperature sensor for viscosity correction to standard conditions./li>
  • Temperature range -20 degC to 150 degC
  • High sensibility and repeatability
  • No moving parts – easy to clean
  • Connection unit VP100 data unit
  • Optional combination with signal processor VP250 or VP550L

Portable Viscometers

Viscolite VL7-100B d21 portable viscometer

  • Hand-held dip in viscometer. Minimum 50 ml sample
  • Ideal for spot tests in the field and factory, or for viscosity measurements in the laboratory
  • Simple operation and cleaning
  • Integral temperature sensor/li>
  • Measuring range 0-10.000 cP (mPa-s)
  • Includes a manual & carrying case

Viscolite VL7-100B-d15 small sample portable viscometer

  • Hand-held small sample dip in viscometer. Minimum 10 ml sample
  • Ideal for spot tests in the field and factory, or for viscosity measurements in the laboratory
  • Simple operation and cleaning
  • Integral temperature sensor/li>
  • Measuring range 0-10.000 cP (mPa-s)
  • Includes a manual & carrying case

Benchtop Viscometers

Laboratory benchtop viscometers

  • Viscolite VL7-100B-HP-d21 viscometer in combination with HP550 Signal processor
  • Viscolite VL7-100B-HP-d15 small sample viscometer in combination with HP550 Signal processor
  • HP550 Signal processor with 4-20 mA analog output and digital output RS232 or RS422/485 Modbus serial link

Signal Processors

VP250 viscosity signal mini processor

  • Rail mounted processor for Hydramotion viscosity sensors.
  • Display line viscosity, corrected viscosity and temperature
  • Pt100 RTD Temperature input
    • Analog output 4-20 mA and digital output 485 Modbus serial link
  • Data capture with ViscoLink data viewing and logging software

VP550 viscosity signal processor

  • Wall or panel mounting processor. Connect to all Hydramotion viscosity sensors.
  • Connects to all Hydramotion viscosity sensors
  • Displays all measured and calculated variables, line viscosity, corrected viscosity and temperature
  • Analog input 3 x 4-20 mA for Pt100 RTD Temperature, density and pressure.
  • Analog output 3 x 4-20 mA and digital output 485 Modbus serial link
  • Optional USB output
  • Data capture with ViscoLink data viewing and logging software

VP550L viscosity signal processor

  • An interface unit for lab-scale or pilot scale viscometers such as reaction vessel viscometers
  • Displays all measured and calculated variables, line viscosity, corrected viscosity and temperature
  • Analog output 4-20 mA
  • Digital output USB
  • Data capture with ViscoLink data viewing and logging software
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