Perform calibration verification weekly or monthly using certified, NIST-traceable Brookfield silicone viscosity standards. Ensure the fluid standard matches the temperature profile of your typical test protocols. If the measured torque or viscosity value varies by more than ±1% of the full-scale range, recalculate the gap or contact a certified service center. Common Troubleshooting Steps Observation Potential Cause Corrective Action Sample drying out or skinning Reduce test time or use a sample cover. Torque Overload (>100%) Viscosity too high for selected cone/RPM Reduce the motor speed or switch to a higher-numbered cone. Temperature Fluctuation Blocked Peltier cooling fan vents Clear dust from rear vents; ensure 6 inches of clearance. Negative Viscosity Readings Incorrect or omitted Autozero step
Lower the cone, allowing the sample to fill the gap. Start the test. The device will output viscosity in centipoise (
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: Fully satisfies international industrial test parameters including ASTM D4287, ISO 2884, and BS 3900 . Temperature Control Series
: The cone, plate, and sample may be extremely hot during or after high-temperature tests; use appropriate safety gear. Reference Links cap 2000 viscometer manual link
: Provides a quick overview of specifications, speed ranges (5–1000 RPM), and what's included with the unit. Brookfield Manual Repository : A third-party collection of various Brookfield user manuals , including the 37-page CAP2000 manual. Hunter & Caprez Secondary Link (PDF)
: This is the comprehensive guide for models with serial numbers beginning with the prefix CAP 2000+ Quick Start Guide : A condensed version for rapid instrument setup. AMETEK Brookfield ⚠️ Important Model Differences Serial Number Prefix "CP"
: Step-by-step instructions guide users through running certified Brookfield silicone viscosity standards to verify instrument accuracy.
Ensure no cone is attached to the spindle shaft, then press the button. The screen will display a calibration confirmation message once complete. 2. Cone Selection and Installation If you share with third parties
Occurs when the viscosity is too high for the chosen speed/cone combo. 5. CAPCALC 32 Software
For detailed troubleshooting, refer to Appendix E in the CAP 2000+ Manual. Conclusion
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Cones supplied with a new instrument are calibrated at the factory before shipment. However, you should still perform a verification check before using the instrument for the first time. a bent spindle
The CAP 2000+ uses an integrated Peltier plate for rapid and accurate temperature control without external baths. The manual provides specific guidelines:
Often caused by a worn pivot point, a bent spindle, or improper sample volume. Refer to the manual's maintenance section to verify spindle runout.
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