Brookfield Viscometer, DVE, LV Torque

Brookfield Viscometer: DVE, LV Torque Range

Brookfield is an ISO 9001:2015 certified world leader in viscosity standards. Our DVE Viscometer combines simplicity with Brookfield quality to give you reliable and accurate results in lab viscosity testing, with a measurement range that handles specific viscosity limits effectively.

DVE’s user friendly interface lets you change test parameters easily. Measurement time is crucial for achieving accurate viscosity results, as the duration of stirring prior to measurement can significantly affect readings. Digital display shows test results for simultaneous measurement of viscosity and torque. 1% of full scale range torque accuracy and 18 speeds to choose from for more range.

Overview

Brookfield viscometers are widely recognized for their precision and reliability in viscosity measurements. These instruments are essential tools in various industries, including food, pharmaceutical, and cosmetics, where they ensure product quality by accurately measuring the viscosity of liquids and semi-viscous materials. Brookfield viscometers come in a range of models, each designed to handle different viscosity levels, from low to high. This versatility makes them suitable for a broad spectrum of applications, ensuring that no matter the liquid’s viscosity, there is a Brookfield viscometer that can provide accurate and reliable measurements.

Features

• Easy to use

• Low cost and easy to use

• Direct display in cP or maps, % 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 to choose from (0.3 to 100 rpm)

• Provides detailed reporting on Brookfield easy viscosity measurements with yield stress

Specifications

• Min Viscosity Range (cP) 15

• Max Viscosity Range (cP) 2000000

• Viscosity Repeatability ±0.2% full scale

• Viscosity Accuracy ±1% full scale in use

• Response Time Measures 4 times per revolution

• Display Two-line digital

• Spindle / Speed Combinations 18

• Rpm 0.3 to 100

• Power (VAC) 100 to 240

• Height (in) 16.3

• Depth (in) 13.4

• Width (in) 11

• Height (cm) 41.4

• Depth (cm) 34.1

• Width (cm) 27.9

• Description Low-Range Viscometer, 115/230 V

• Warranty 1 year

The Brookfield Viscometer offers a comprehensive measurement range, accurately assessing viscosities from 1 cP to 2M cP for the LVDVE model and from 100 cP to 13M cP for the RVDVE model. This wide measurement range ensures precise viscosity determination for various liquid and semi-viscous products under different testing conditions.

† 1 cP with UL Adapter accessory. 15 cP on LV with standard spindles. ††Minimum viscosity is with RV/HA/HB spindle. B=1 Billion M=1 million cP=Centipoise mPa·s=Millipascal·seconds

Included

• Instrument

• Viscometer Lab Stand

• 6 Spindles (RV/HA/HB) or 4 Spindles (LV)

• Guard Leg (Not applicable to HA or HB torque models)

• Power Cord

• Carrying Case

Key Features

Brookfield Viscometer is a precision instrument to measure the viscosity of liquids and semi-viscous materials with high accuracy. Mechanical design and microprocessor controlled system gives reliable and repeatable results. Built in LCD display to view test data and integrated printer to document data as well as using its automatic data gathering capability. 100 mPa.s to 200,000 mPa.s range to measure a wide variety of liquids from low to high viscosity.

Thorough analysis is crucial in achieving accurate viscosity measurements and yield stress, ensuring that each sample is tested with precision.

Key features:

• 100 mPa.s to 200,000 mPa.s range
• Mechanical design and microprocessor controlled system
• Built in LCD display
• Printer
• Measure viscosity of various liquids
• Custom test programs
• Optional computer control

Brookfield viscometers operate on the principle of rotational viscometry, a method that involves immersing a spindle into the liquid sample and rotating it at a constant speed. This rotation creates shear stress and yield stress within the liquid, and the viscometer measures the torque required to maintain the spindle’s rotation. The measured torque is then used to calculate the liquid’s viscosity. Equipped with a microprocessor-controlled system, Brookfield viscometers offer precise temperature control and accurate viscosity measurement. The test data that has been gathered through the automatic data gathering capability is conveniently displayed on an LCD screen, and some models even feature an integrated printer for easy documentation of test results, ensuring that users can efficiently analyze and record their viscosity measurements.

Brookfield Viscometer uses rotational viscometry principle to measure absolute viscosity of liquids and semi-viscous materials. This principle involves rotating a spindle in the liquid sample and measuring the torque to rotate the spindle. Viscosity of the liquid is calculated from the measured torque and speed of rotation. Brookfield Viscometer has multiple spindles (RV, HA, LV) to cater different testing requirements and ensure precise viscosity measurement.

Brookfield Viscometer principle is based on:

• Rotational viscometry: The device rotates the liquid and measures the torque to rotate the spindle.

• Torque measurement: Measures the torque to rotate the spindle and calculates the viscosity of the liquid from the torque and speed of rotation.

Selecting the appropriate Brookfield viscometer depends on the specific requirements of your application. Key factors to consider include the type of liquid being measured, the viscosity range, and the desired level of accuracy. Brookfield offers various models, each tailored to different testing needs. For instance, the RVDV2T Brookfield Digital Viscometer is a popular choice that meets or exceeds ASTM D 2196 standards for rheological properties of non-Newtonian materials. It comes with multiple spindles (RV/HA) to accommodate various testing scenarios, ensuring that you can achieve precise and reliable viscosity measurements for a wide range of liquids.

Viscosity, a measure of a fluid’s resistance to flow, and rheology, the study of the flow and deformation of materials, are critical concepts in many industries. Accurate viscosity measurements are essential for ensuring product quality and performance. Brookfield viscometers are designed to provide precise viscosity measurements, but it’s important to understand that factors such as temperature, pressure, and shear rate can influence these measurements. Controlling these variables during testing is crucial for obtaining accurate results. By understanding and managing these factors, you can ensure that your viscosity measurements are both reliable and meaningful.

Brookfield Viscometer is a versatile instrument used in various industries to measure viscosity of liquids. In food and beverage industry it is used to test the consistency of sauces, syrups and oils. In pharmaceutical industry it is used to test the viscosity of creams, ointments and gels. Cosmetics industry uses it to measure the viscosity of lotions, creams and gels. Chemical industry uses it to test paints, coatings and adhesives. Research and development, quality control and production environments also use Brookfield Viscometer to get accurate viscosity measurement for various applications. It also offers custom test programs for every tests and optional computer control.

Calibration and Maintenance

To ensure the accuracy and reliability of Brookfield Viscometer, calibration and maintenance is necessary. Calibration should be done using calibration fluid with known viscosity as per manufacturer’s instruction. Routine maintenance includes cleaning the instrument and its parts, checking electrical connections and cables, program generator software update and replacing worn or damaged parts like spindle or guard leg. By following these practice Brookfield Viscometer will continue to give precise and reliable measuring viscosity across the range.

Troubleshooting

When using Brookfield viscometers, users may occasionally encounter issues such as inaccurate measurements, faulty temperature control, or spindle damage. To troubleshoot these problems, first verify that the device settings and measurement parameters are correct. Check the calibration of the viscometer and ensure it is properly maintained. Regular maintenance, including cleaning the instrument and its components, checking electrical connections, and updating software, can prevent many common issues. If problems persist, contacting the manufacturer or a qualified technician for assistance is recommended. By following these steps, you can ensure that your Brookfield viscometer continues to provide accurate and reliable viscosity measurements.