Inline viscometer: L-Vis 510 and L-Vis 520 Ex

More than an instrument. A solution.

The L-Vis inline viscometry solution combines unique inline process technology with the know-how of the world leader in lab rheology. Applying the lowest shear rates in the process industry allows for best-in-class correlation results with lab instruments. This enables reliable inline measurement especially for samples with shear-dependent behavior – such as sanitary ceramic, shampoos, viscose, and dough – resulting in higher product quality and lower lab time.

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Key Features

Bringing lab measurement inline

Bringing lab measurement inline

  • Higher product throughput: The number of lab measurements can be reduced from once per hour to once per day.
  • Increased output product quality: Ceramic’s waste, for example, can be reduced by 20 % as continuous inline measurement helps avoid laboratory-related sample preparation issues such as the influence of ambient conditions or read-off errors.
  • Reliable inline performance: Being the leading supplier for lab rheology instruments, Anton Paar’s expertise ensures an excellent correlation between inline sensors and lab instruments under a wide variety of operating conditions.
  • Adjustable shear rates allow for further improving the lab-to-process correlation by adapting shear rates in such a way that they are closer to those of lab instruments.
Best-in-class analysis of shear-dependent samples

Best-in-class analysis of shear-dependent samples

  • Get more meaningful and detailed information on your sample’s properties by applying low shear rates down to 10 s-1. Measure, for example, shear-thinning polymer solutions in their low-shear plateau rather than in the shear-bending area.
  • Accurately track varying flow behavior throughout different process steps by choosing between three different rotation speeds.
  • The influence of temperature variations is minimized due to temperature-compensated viscosity values.
Rely on results, even under harsh process conditions

Rely on results, even under harsh process conditions

  • The instrument can be installed directly in the product flow.
  • Pressure drops and changes of flow velocity up to 2 m/s do not influence the measurement.
  • External forces, such as bearing and sealing frictions, do not influence the measurement result.
  • Measurements of inhomogeneous fluids and suspensions can be performed, maintaining excellent repeatability.
Various process installation and communication possibilities

Various process installation and communication possibilities

  • L-Vis can be installed in a stirred tank, in the main line, and in a bypass line. The innovative measuring principle always forces a proper sample exchange.
  • Multiple spool pieces and process connections make the installation as easy as possible.
  • All relevant fieldbuses as well as an analog 4-20 mA signal are available to ensure communication to your PLC/DCS.

Technical Specifications

L-Vis 510 L-Vis 520 Ex
Measurement principle Dynamic fluid pressure Dynamic fluid pressure
Viscosity
Measuring range 1 mPa.s to 50,000 mPa.s 1 mPa.s to 50,000 mPa.s
Typical accuracy 1 % 1 %
Typical repeatability 0.5 % 0.5 %
Conditions
Process temperature range -5 °C to +200 °C -5 °C to +195 °C
Ambient temperature -20 °C to +40 °C -20 °C to +40 °C
Process pressure range 0 bara to 25 bara 0 bara to 25 bara
Housing
Material Stainless Steel, anodized aluminum Stainless Steel, anodized aluminum
Dimensions (L x W x H) 420 mm x 200 mm x 180 mm 400 mm x 200 mm x 240 mm
Weight approx. 12 kg approx. 13 kg
Flange type

L-Vis process flange DN60 with welding set
(25 bar@200 °C);
L-Vis process flange DN60 with adapter
(25 bar@100 °C, 20 bar@200 °C);
EN 1092-1/05/DN80/PN16,
EN 1092-1/05/DN100/PN16
ANSI flange 3", 4" CL 150
VARIVENT® Type N (10 bar@135 °C)

L-Vis process flange DN60 with welding set
(25 bar@200 °C);
L-Vis process flange DN60 with adapter
(25 bar@100 °C, 20 bar@200 °C);
EN 1092-1/05/DN80/PN16,
EN 1092-1/05/DN100/PN16
ANSI flange 3", 4" CL 150
VARIVENT® Type N (10 bar@135 °C)

Sensor
Wetted parts Stainless Steel No. 1.4542, diamond-coated SiC seal, Viton O-ring seal Stainless Steel No. 1.4542, diamond-coated SiC seal, Viton O-ring seal
Installation dimensions min. 130 mm x min. 100 mm (L x Ø) min. 130 mm x min. 100 mm (L x Ø)
Installation Inline, bypass, tank Inline, bypass, tank
Installation orientation Horizontal and vertical Horizontal
Sealing Single mechanical seal Double mechanical seal with a buffer fluid
Operating terminal
Display 35 mm x 60 mm display incl. optical pushbuttons 35 mm x 60 mm display incl. optical pushbuttons
Analog/digital communication
Analog output 2 x 4 to 20 mA 2 x 4 to 20 mA
Digital output 1 x 1 x
Digital input 1 x 1 x
Fieldbus communication PROFIBUS DP, PROFINET, Modbus TCP, EtherNet/IP, DeviceNet PROFIBUS DP, PROFINET, Modbus TCP, EtherNet/IP, DeviceNet
Power supply 24V DC 3.75 A 24V DC 3.75 A
Degree of protection IP 65 IP 65
Hazardous area No

ATEX/IECEx: II 2 G Ex d IIB T6 Gb
Class I, DIV 1, Groups C and D, T6 (USA)
Class I, DIV 1, Groups C and D, T6 (Canada)

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