Miniature 501 Viscometer


Cambridge Viscosity’s Miniature Viscometer 501 is Designed for Applications Where Form Factor and Small Sample Value are Important

Viscosity Range Icon

Viscosity Range: 0.2 to 500 centipoise (cP)

Repeatability Icon

Repeatability: ± 0.5%

Accuracy Icon

Accuracy: ± 1.0%

Maximum Temperature Icon

Maximum Temperature: 190°C (375°F)

Pressure Range Icon

Pressure Range: 2,500 psi (172.36 bar)

Wetted Parts Icon

Wetted Parts: 316L or Hastelloy

SPC501 Viscometer Sensor

How a Viscometer Sensor Works

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SPC501 Viscometer Sensor - Ideal for Applications Where Small Sample Volume and Form Factor Are Important 


Viscosity  0.5 to 500 centipoise (cP)
Piston Ranges  0.5-10cP, 1-20cP, 2.5-50cP,*
 5-100cP, 10-200cP, 25-500cP
Viscosity Accuracy  ± 1.0%
Repeatability  ± 0.5% of Reading
Temperature Sensor  4 wire internal RTD
Wetted Materials  316L
Maximum Particle Size  25-100 microns (Range Dependent)
Max Ambient Temperature  375°F (190°C)
Max Operating Pressure  2,500 psi (172.36 bar)
Standard Cable Length  15 feet (4.5 meter)
 Requires VISCOpro electronics


501 Mini Viscometer Sensor



A Small But Powerful Viscometer

Cambridge Viscosity’s Miniature Viscometer SPC 501 is used extensively for compressor, used oil analysis, on-engine, and hydraulic fluid applications. It is ideal for installations where form factor and small sample volume are important.


Our viscosity management technology is based on a simple and reliable electromagnetic concept.  Two coils move the piston back and forth magnetically at a constant force.  Proprietary circuitry analyzes the piston’s two-way travel time to measure absolute viscosity.


A built-in temperature detector (RTD) senses the actual temperature in the sampling chamber.  Constant in and out motion keeps samples fresh, mechanically scrubs the sampling area, and provides excellent viscosity tracking.



Recommended fluid flow over the sensor is up to 30 cm/sec.



  • Small Sample Size
  • Easily Installed and Serviced
  • One Moving Part, No Wear Points
  • Low Maintenance
  • Internal Platinum Temperature Probe
  • Proven Technology
  • All 316 Stainless Steel Construction
  • Mates with ½” NPT threaded Opening
  • Self Cleaning
  • No Seals
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