Ravenfield by CANNON BS/C+ HTHS Tapered Plug Viscometer

CANNON product

ASTM D4741, ASTM D4683, CEC L36-A-90 and IP 370. For High Temperature, High Shear Viscosity of Engine Lubricants.

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The Ravenfield® by CANNON® HTHS BS/C+ Viscometer is a compact, high precision, tapered plug viscometer that measures the high temperature, high shear viscosity of engine lubricants and other oils according to ASTM D4741, CEC L-36-A-90 and IP 370 as specified by SAE J300 and ACEA. The HTHS BS/C+ Tapered Plug Viscometer also correlates to ASTM D4683 with no bias and is capable of testing across a wide range of temperatures and shear rates. Also available with an optional Model DR autosampler which permits the testing of up to 22 samples without operator intervention.

Common Applications

  • Engine lubricants
  • Pre-filtered used oils

Additional information






Automotive, Petroleum


ASTM D4741, CEC L-36-A-90, IP 370, SAE Spec. J300

Features & Benefits

Simple, automated operation and data analysis

  • Complies with SAE J300 and ACEA specifications. Meets ASTM D4741 and correlates to ASTM D4683 with no bias
  • Computer-controlled user interface guides the operator through calibration and testing
  • On-board viscosity calculator measures flow curve and computes results automatically
  • Optional Model DR autosampler (with built-in computer control) allows unattended testing of up to 22 samples
  • Simple sample introduction

Fast and precise measurements

  • Total test time <5 minutes per sample
  • Sample processing of >12 tests per hour
  • 1% to 2% repeatability (increments)

Versatile test options

  • Temperature range: 40 °C to 180 °C (adjustable in 0.1 °C increments)
  • Variable speed motor permits simple shear rate adjustment across a wide range (from 100,000 sec–1 to 2,000,000 sec–1)
  • Customizable gap control

Compact, convenient design

  • No external utilities or high pressure gases are required
  • Instrument provides internal storage of measurement results and offers optional LIMS connectivity
  • Optional model DR autosampler features a built in printer for hard-copy documentation of test results and allows unattended testing of up to 22 samples