Cone Plate Wells Brookfield Rheometer

Product Details : 

PRINCIPLE OF OPERATION

• The Wells-Brookfield Cone/Plate Rheometer is a precise torque meter that is driven at discrete rotational speeds. The torque measuring system, which consists of a calibrated beryllium-copper spring connecting the drive mechanism to a rotating cone, senses the resistance to rotation caused by the presence of sample fluid between the cone and a stationary flat plate.
• The resistance to the rotation of the cone produces a torque that is proportional to the shear stress in the fluid. This reading is easily converted to absolute centipoise units (mPa·s) from pre-calculated range charts. Alternatively, viscosity can be calculated from the known geometric constants of the cone, the rate of rotation, and the stress-related torque.
• The correct relative position of cone and plate is obtained by following a simple mechanical procedure without the need for external gauges or supplementary instrumentation.
• The stationary plate forms the bottom of a sample cup which can be removed, filled with .5 ml to 2.0 ml of sample fluid (depending on the cone in use), and remounted without disturbing the calibration. The sample cup is jacketed and has tube fittings for connection to a constant temperature circulating bath.
• The system is accurate to within ±1.0% of the full-scale range. Reproducibility is to within ±0.2%. The working temperature range is from 0°C to 100°C.
• Various cone spindles are available for use with the Wells-Brookfield Cone/Plate instruments. One cone spindle is provided with the instrument and is calibrated for use with the sample cup. Additional cone spindles may be purchased and will be calibrated for use with the same sample cup.

FEATURES AND BENEFITS

• 5-inch full color, touch screen display supports multiple languages
• Displayed info includes: viscosity (cP/mP•s), temperature (°C/°F), shear rate/stress, % torque, spindle/speed, step program status
• Enhanced Security provides enhanced security with customizable user levels & password access to comply with regulatory requirements such as 21 CFR Part 11.
• Built-In options include timed tests, data averaging, programmable QC limits/alarms, customizable speed/spindle lists, on-screen data comparison
• The auto range shows maximum viscosity measured with any spindle/speed combination
• USB PC interface provides optional computer control and automatic data gathering capability Download custom test programs with included PG Flash software
• Front-facing bubble level for convenient viewing
• Built-in temperature probe
• Accuracy of ±1.0% of range with displayed test data
• Repeatability of ±0.2%
• NIST traceable viscosity standards available
• Also available: New magnetic coupling system, durable ball-bearing suspension system, quick action lab stand and RheocalcT software.