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Inline process density meter and viscometer

online, real-time fluid density meter with viscosity

  • Single instrument for simultaneous process density (specific gravity), viscosity and temperature measurement
  • Compact form-factor for simple installation
  • Real-time, stable, repeatable and reproducible measurements in Newtonian & non-Newtonian fluids
  • Measures kinematic and dynamic viscosity
  • All metal (316L Stainless Steel) construction
  • Completely insensitive to mounting conditions
  • Operational to  7500 psi (500 bar) and 575°F (300°C)
  • Threaded, flanged and sanitary process fittings
  • Easy to clean, no maintenance or re-configurations needed
  • Scale across multiple locations/installs without application re-engineering

Fluid measurements
Density Range 0.4 - 1.5 g/cc
Density Accuracy 0.01 g/cc
(0.001 g/cc & higher accuracy available)
Viscosity Range 1 to 3,000 cP (standard)
Wider range available
Viscosity Accuracy 5% of reading (standard)
1% & higher accuracy available
Reproducibility Better than 1% of reading
Temperature Pt1000 (DIN EN 60751 cIass B)
Operational conditions
Process Fluid Temperature -40 up to 300 °C (575°F)
Ambient Temperature -40 up to 150 °C
Pressure Range up to 7,500 psi (500 bar)
  • The rheonics density meter SRD measures viscosity and density by means of a torsional resonator, one end of which is immersed in the fluid under test.
  • The more viscous the fluid, the higher the mechanical damping of the resonator. By measuring the damping, the product of viscosity and density may be calculated by rheonics’ proprietary algorithms.
  • The resonator is both excited and sensed by means of an electromagnetic transducer mounted in the sensor’s body.
  • Damping is measured by the rheonics patented sensing and evaluation electronics and stable, high accuracy and repeatable readings are obtained based on rheonics’ proven gated phase-locked loop technology.
Operating principle - inline process viscosity density monitoring control management - rheonics balanced resonator sensor technology whitepapers
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