Miniature Viscometer 501

miniature viscometerThe 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

Measurements can be made in any of 6 different 20:1 viscosity ranges between 0.5 and 500 centipoise (cP).

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


SPC 501 drawing.png


Key Features:

  • Easily installed and serviced
  • Internal platinum temperature probe
  • Automatic self-cleaning
  • No seals
  • All 316 stainless steel construction
  • Small sample volume
  • Proven technology
  • Mates to 1/2" NPT threaded opening



Viscosity 0.5 to 500 centipoise (cP)
Piston Ranges 0.5-10cP, 1-20cP, 2.5-50cP,*
5-100cP, 10-200cP, 25-500cP*
*requires VISCOpro 2000 electronics
Viscosity Accuracy ± 1.0%
Repeatability ± 0.8% of Reading
Temperature Sensor 4 wire internal RTD
Wetted Materials 316L and 430 Stainless Steel
Maximum Particle Size 25-100 microns (Range Dependent)
Max Ambient Temperature 375°F (190°C)
Max Operating Pressure 1,000 psi (70.3 bar)
Standard Cable Length 3 feet (1 meter)
Power Requires ViscoPro electronics