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UC-200
UC-200 High-Speed Core Centrifuge
Coretest · core centrifuge
The UC-200 is the entry model of the Coretest centrifuge line. It drains liquid-saturated plugs with air or a lighter liquid in a series of speed steps and measures saturation by weighing each plug after every step. There is no camera and no software to maintain: the result depends on a laboratory balance and a clear procedure, which is why many laboratories use this method for water saturation end-points and plug preparation.
Three centrifuges, three levels
Coretest builds three core centrifuges for capillary pressure work. They differ in how saturation is read and in speed; pick the one that matches your test programme.
Model How saturation is measured Rotor Typical use UC-200 High-Speed Core Centrifuge Plugs weighed after each speed step fixed rotor, 1 in or 1.5 in plugs Swi end-points, drainage curves, plug preparation on a budget Refrigerated Centrifuge LERC4500 Camera reads each receiving tube during rotation 6 holders, 26 cm rotor radius, 5 to 90 °C Drainage and imbibition at moderate speed, relative permeability from production Automated Core Centrifuge Stroboscope and camera, automatic level detection 3 × 1.5 in buckets, 13,000 rpm High capillary pressure, full drainage–imbibition cycles, USBM How a test runs
- Plugs are saturated, weighed and loaded into sealed holders; opposite or all holders are matched in mass.
- The rotor runs a speed step until liquid production stops, then stops.
- Each plug is taken out, weighed and returned; the mass change gives the average saturation for that step.
- The next, higher speed step follows. A program keeps up to 10 steps with their speed, time and temperature.
Capillary pressure at the inlet face of the plug for each step: Pc = ½ · Δρ · ω² · (r₂² − r₁²), where Δρ is the density difference of the fluid pair (kg/m³), ω = 2π · rpm / 60 (rad/s), r₂ the radius of the plug outlet face and r₁ = r₂ − plug length (m). The outlet face is at Pc = 0.
Rotor and holders
The rotor is fixed, with radial holders. In each holder the plug sits on a perforated support with drain tubes; displaced liquid collects in a cup at the outer end and cannot flow back into the plug when the rotor stops. Rotors are built for 1 in or 1.5 in plugs; the rotor layout drawing with the plug face radii is issued for approval before manufacturing.
Specification
The full specification is on the Specification tab. Download the datasheet (PDF).
Supplied with
- UC-200 centrifuge with refrigerated chamber
- Fixed rotor with sealed holders and collection cups
- Rotor tool, maintenance spare parts kit
- Rotor drawing for approval, rotor passport, operation manual, factory test report
Guaranteed performance, rotor geometry, included hardware and acceptance criteria are stated in the project-specific technical proposal and approved datasheet. Images are for reference; the delivered configuration may differ.
Specification
Rotor fixed rotor with radial sealed holders; 1 in or 1.5 in plugs, up to 2 in long; holder count per rotor Maximum speed about 11,000 rpm with the standard rotor; lower for large-plug rotors (for example 9,000 rpm for 3 × 1.5 in) Speed setting / accuracy 50 rpm steps / ±50 rpm, speed or RCF entry Chamber temperature setting −20 to +40 °C; during rotation held down to about +10 °C at medium speed and +15 °C at full speed Programs up to 10 speed steps per program, 100 programs stored Timer 1 min to 99 h 59 min, countdown from set speed Measurement plug mass before the run and after each step, laboratory balance Protection lid lock, imbalance, overspeed, rotor identification, over-temperature, supply voltage Power 220 V ±10 %, 50 Hz, single phase, 20 A line Size / weight approx. 800 × 740 × 930 mm / approx. 300 kg Guaranteed values are stated in the project-specific technical proposal.
Comparable instruments
Side-by-side comparisons based on each manufacturer’s published specifications.
- Alternative to the Vinci UC20
Coretest UC-200 High-Speed Core Centrifuge vs the Vinci UC20: speed, rotor radius, plug size, readout and temperature from published specifications.
Model names are trademarks of their respective owners. Coretest is not affiliated with these companies.
| Model | UC-200 |
| Brand | Coretest |
