A programmable Brookfield DV Next viscometer is designed to measure fluid viscosity at a given shear rate. To drive a rotor submerged in the test liquid by a calibrated spring, the viscous resistance of the fluid to the rotor is measured by the torque of the spring, which is obtained by the rotary sensor.
The measuring range consists of the rotor's rotational speed, the rotor's size and shape, the crucible matched with the rotor, and the maximum range of the spring. The LV model represents a low viscosity, which means the viscometer has a softer calibration spring than the DV Next, as well as equipped with different series of standard rotors.
A range of 1.5cp to 5×10⁷cP with the minimum viscosity obtained with the maximum rotor speed and maximum viscosity obtained with the minimum rotor speed. Users can set up to 200 RPM. The viscometer is installed on the lifting mechanism, which can make the rotor immerse or leave the liquid to be measured. There is a horizontal plane at the top of the viscometer to adjust the device to make the rotating rod vertical. When the standard rod is replaced by a custom long rod, it is necessary to use a plumb line to check that the rod is in the center of the furnace tube. Move the lifting platform horizontally, adjust the plumb line to be on the center line of the furnace tube, and then check the center of the lower part of the furnace tube.
The Brookfield DV Next full-featured rheometer can manually control the viscosity test interface and set the viscosity test parameters. The instrument will automatically zero after turn on. When the instrument is powered on, it enters the main screen and the auto-zero screen appears, tap next until it is complete.
3216p1-controller/ programmer is a digital temperature controller that uses PID algorithms to provide temperature control. The EuroTherm EPack 1p thyristor is used as a calculated trigger to control the SBA flat vertical winding transformer. The controller stores and runs a temperature program consisting of 8 holding stages/16 steps. High precision suspension flow meter is used for gas control, which can feed two kinds of proportionally mixed gas,
When the temperature rises, the instrument is sealed in the vacuum hood. At this time, the depth of the rotor entering the liquid surface and the distance from the rotor to the bottom of the crucible can be seen through the digital depth positioning system. When lifting the rotor mechanically, the digital depth position is displayed. When the liquid enters the page depth and the distance of the rotor from the bottom of the crucible is completed by this depth positioning system.
When the instrument calculates the viscosity, the rotor must be accurately aligned in the crucible. The distance between the side of the rotor and the inner wall of the crucible can be calculated by the given viscometer speed to calculate the laminar flow. Only in this way can the shear rate data calculated by concentric alignment be accurate.
Through the mechanical and electric lifting device, the assembled samples are sent into the constant temperature zone of the furnace. The gas sealing device has a metal flange with a high-temperature sealing ring, so that the heat-expanded gas is isolated under the metal flange, ensuring that the precision viscosity sensor is not corroded and inferred by the hot gas below.
The company has introduced internationally advanced process technologies and top-tier production and processing equipment. Adhering to the design philosophy of "energy-saving, environmentally friendly, efficient, and aesthetically pleasing," and leveraging its strong technical expertise in temperature, viscosity, control, algorithms, software, and automation accumulated over many years, the company has developed and produced a series of products and customized services with internationally advanced standards, including high-temperature viscosity, high-temperature melting point, heating and constant temperature, and more.
You are welcome to visit our company to see our high-temperature viscometer products. We also provide free pre-sale service: you provide the samples, and we will test the high-temperature viscosity data for you free of charge.
Our delivery time is generally around 90 days. Please wait patiently.
Free remote training, with response to fault inquiries within 24 hours. During installation and commissioning, Party B shall arrange for engineers to provide technical guidance and training at the end user’s site, covering instrument structure, working principle, instrument operation, sample analysis, daily maintenance and care, until the end user’s operators are able to independently use the instrument for analysis and perform routine maintenance. Party B shall conduct regular or irregular follow-up visits according to the end user’s requirements, provide professional instrument maintenance training to maintenance personnel, and offer suggestions on the diagnosis and handling of common instrument faults.
We offer customized services for special configurations, such as performing surface tension testing in addition to high-temperature viscosity testing, as well as measuring the density of high-temperature melts.
Yes, our high-temperature viscometer can typically be tested in a vacuum environment. It can also be tested with an inert gas purge as required by the customer to prevent oxidation of the high-temperature melt during testing. The specific testing environment depends on the equipment model and configuration.
During high-temperature testing, the high-temperature viscometer can typically be purged with the following gases to protect the sample or prevent oxidation: Argon (Ar)、Nitrogen (N₂)、Helium (He)、Hydrogen (H₂) The specific types of gases that can be introduced depend on the equipment's sealing, heating element material, and sample requirements. It is recommended to refer to the equipment manual or consult the manufacturer.
The sample volume required for the high-temperature viscometer test is 16 mL. We generally use 16 mL of standard glass, so the test sample also uses 16 mL.
Our high-temperature viscometers are available in two models, with maximum testing temperatures of 2300°C and 1700°C.
The viscosity measurement range of our high-temperature viscometer is as follows: Minimum viscosity: 1.5 mPa·s (cP) Maximum viscosity: 50,000,000 mPa·s (cP) Viscosity accuracy: ±1% (full scale) Viscosity repeatability: ±0.2% (full scale)
The delivery time for our high-temperature viscometer is generally 3 months. Our products are meticulously crafted by our technical personnel, so it takes a bit longer.
If customers purchase our products, we can dispatch technical personnel to their site to resolve any installation and technical issues. Additionally, our top management will visit customers annually. Furthermore, if the use of our products is helpful to your research, we can also provide technical experience exchange assistance in your field.
Our company has developed a variety of consumables for high-temperature viscometers, including crucibles and rotors made of platinum, alumina, molybdenum, etc. For cost-effectiveness, platinum is reusable, while alumina is convenient and disposable.
HUAN AO TECH was founded and registered in Room 1505, Jiating Building, No. 1033 Moyu South Road, Jiading District, Shanghai, China