Lab Science Products

With water-based and solvent-based systems, manual viscosity control will always be less efficient than a good automatic viscosity control system.

• The viscosity of the ink or coating is always rising due to evaporation
• With a manual viscosity check made periodically by hand, the operator estimates how much solvent or water to add. This leads to large rises and falls in viscosity, it wastes ink and can lead to reject material being produced
• The Brookfield AST100 automatic viscosity control system from Fullbrook Systems offers accurate and precise control over the printing and coating process.
• Unlike its predecessors the AST100 has no moving parts and no small or narrow gaps. To the printer this means that the viscometer has a long service life and is easy to clean.
• Saves time money and ink (by as much as 20%!) by always printing at a consistent viscosity.
• Does not rely on the operator
• Optimises the production parameters which means that the system cost is amortised

• 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 with customizable user access, date/time stamp file, password access, portable log-in settings
• Built-In options include timed tests, data averaging, programmable QC limits/alarms, customizable speed/spindle lists, on screen data comparison
• 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: DV2T Extra

The digital display ensures easy and accurate readout of test results for simultaneous measurement of viscosity and torque. Quality of manufacture guarantees reliable performance and long life.

• Low cost and easy to use
• Direct display in:
  • cP or mPa·s
  • % Torque, Spindle, and Speed
• Torque measurement accuracy: 1% of full scale range
• Repeatability: 0.2% of full scale range
• Compatible with all Brookfield accessories
• NIST traceable viscosity standards available
• 18 speeds for greater range capability (0.3 to 100 rpm)

click to enlarge

Each of our standard Laboratory Viscometers/ Rheometers are supplied with an internal spring used to calculate the viscosity of a material. These springs have different measuring capabilities:

• LV is for low viscosity materials and can measure the “thinnest†materials. Typical examples include inks, oils, and solvents.
• RV is for medium viscosity materials than those measured with an LV torque. Typical examples include creams, food, and paints.
• HA is for higher viscosity materials than those measured with an RV torque. Typical examples include gels, chocolate and epoxies.
• HB is for even higher viscosity materials than those measured with an HA torque spring. Typical examples include asphalt, caulking compounds, and molasses.

• FEATURES AND BENEFITS
• Continuous measurement eliminates need for "Grab" sampling and allows for prediction and constant control of final product properties
• The gear pump forced internal sample flow via magnet coupling keeps the instrument resistant to pressure and temperature
• 4-20 mA output signal provides a variety of display and control capabilities
• Sample transport by aspiration tube into the viscometer creates bypass situation where measurement "Zone" is protected from main flow, allowing accurate, repeatable measurement under variable conditions
• Availability of various standard viscosity ranges up to 500 mPas (cP); customized ranges on request
• Display device for measuring data including calculation options
• SPECIFICATIONS

  Viscosity Range:	0 to 500 mPas (cP)
  Temperature:	-25°C to 140°C
  Maximum Pressure:	25 bar (360 psi)
  Input Power:	230 V AC, 50/60 Hz; 24 V DC
  Output:	4 - 20 mA

  
  OPTIONS
  • ATEX approved design for explosion-proof requirements
  • Mounts in-line supported by stainless steel flow chambers with customized flange connections
  • Special synthetic material-based flow chambers for small pipe diameters or tube connections
  • Flange for tank or container mounting
  • Temperature compensation of viscosity reading