rheometer

DV-III + rheometer measured fairly wide range of liquid viscosity, the viscosity of the scope and the size and shape of the rotor and the speed on. Because it corresponds to a particular rotor, in fluid rotation and torque generated by certain circumstances, the actual fluid viscosity and inversely proportional to the rotor speed, while the shear stress and the rotor are the relationship between the shape and size. For a known viscosity of the liquid, spring will be the twist angle as the rotor rotation speed and the rotor geometry increases, so determination of low-viscosity liquids, the use of large volume and high-speed rotor combination, on the contrary, Determination of high-viscosity liquid, then use a small rotor and low speed combinations.
    DV-III + rheometer using liquid crystal display, display information, including viscosity, temperature, shear stress / shear rate, torque, rotor number / speed and tracking program is running. 0-10mV and 0-1V analog signal output terminal can be used to connect an external display device and recording equipment, while the RS-232C digital signal output interface can be used to connect computers and peripheral data processing system.

1.Technical parameter:
Speed range :0.01-250 RPM, from 0.01 to 0.99RPM within the scope of 0.01RPM incremental increase, and the range of 1.0 to 250RPM increments within 0.1RPM increments.
Input voltage: 90 V -260 V AC voltage. Frequency :47-440Hz. Power consumption: less than 20 watts. Net weight: 14.5 kg.
Operating temperature: -100 ℃ -300 ℃ (-148 ℉ - +572 ℉).
Torque output of the analog signal 0-1 V (corresponding to 0-100% of the maximum torque).
Temperature :0-4 analog signal output V (10mV / ℃).
RS-232 serial port: used to connect printers, computers or Brookfield's temperature controller parallel port: used to connect printers.
Viscosity measurement accuracy: measurement range of ± 1%. Repeatability: ± 0.2%.
Temperature measurement accuracy: ± 0.1 ℃: at -100 ℃ to +149 ℃ between; ± 0.2 ℃: in between 150 ℃ and 300 ℃.

2.The viscosity measurement range:

LVDV-III_ULTRA:1-2M

RVDV-III_ULTRA:100-13M

HADV-III_ULTRA :200-26M

HBDV-III_ULTRA :800-104M
Units: cP where 1M = 1 million = 1000000
Range: 0.01-250RPM Speed: 2600 kinds of
Rotor Number: LVDV-III_ULTRA: 4 Gen RV / HA / HBDV-III_ULTRA: 6 Gen
Data Display: digital display output (display: Viscosity cP or mPa.s, torque%, speed / rotor number, temperature, shear rate / shear stress, the program is running tracking)

3.Measurement functions:
1. Timer feature a rotational speed of a data collection point, a single point of data collection. In this mode, the data can be collected for viscosity - concentration, viscosity - temperature, viscosity - time, viscosity - speed / shear rate and so the results of analysis to obtain different concentrations, temperature, Speed / shear rates and at different times under the variation of fluid viscosity.
2. Will feature a continuous torque of data collection until the torque reaches the set value. In a certain period of time according to a certain time interval continuous data acquisition can be directly obtained under the fluid viscosity of the set torque - time-varying characteristics.
3. Speed curve measured at different speeds of the viscosity. Can get the same speeds without viscosity - shear rate curve, while changes in the speed can also control the temperature changes.
4. Temperature curve measured at different temperatures the viscosity values. Can be at different temperatures of viscosity - temperature curve, changes in temperature can control the speed at the same time also changes.
5. Curing process of the curing characteristics of the sample test, this test used a series of speed, the speed difference between the adjacent 10.
6. Thixotropic index, thixotropic index, this method is used by the two adjacent speed ratio is 10.
7. Yield stress, if equipped with optional software, EZ-Yeild and paddle-type rotor, can achieve a true static yield stress test (where the software with the following mathematical model can be used to calculate the yield stress: Bingham Plastic, Casson, Power Law, IPC Paste Analysis).

4.Measurement of functional analysis applications:
1. Timing features and functions generally used to measure the torque of a single point of fluid viscosity discontinuous
2. Speed curve and temperature curve of the viscosity function can obtain immediate information and can draw the viscosity with time, temperature, shear rate and shear stress curves, the rheological properties of fluid and accurate linear analysis of , which can determine the nature of fluid and flow characteristics.
3. Curing process can be a variety of materials, research and analysis of 5.the curing characteristics of
4. Thixotropic index model can be thixotropic index to determine the thixotropic fluid behavior.
5. In choosing the software EZ-Yeild and paddle-type rotor circumstances, can achieve a true static yield stress test and get accurate results.
DV-III + ULTRA rheometer + Wells / Brookfield Cone / Plate Viscometer
Wells / Brookfield (cone / plate viscometer) is applied to a small sample, can detect a small amount of sample (0.5-2.0ml) of the absolute viscosity, accurate values of shear rate characteristics of the product can be predicted, due to the sample amount is small, temperature very rapidly, so that more accurate measurement results. Recommendation: In the measurement of samples of the rare cases where the amount or value is less than 1cP fluid viscosity can be selected. Note: The cone / plate viscometer rotor to choose from a total of five different rotor measured viscosity range is different. (LV-type the smallest measuring range :0.1-3KcP, HB-type maximum measurement range :314-7 .8 McP)

6.Accessories selection:
1. SSA (small sample adapter) + DV-III + ULTRA rheometer SSA include: water bath jacket, metal mounting bracket, one selected by the customer SC4 rotor and sample cups, packing boxes (optional: Built-in RTD temperature sensor, disposable sample cups, constant temperature water bath.). SSA can be used to measure under a certain shear rate viscosity of the fluid, the sample volume need only 2ml - 16ml. Water-bath jacket can make the sample measured at constant temperature fluid viscosity, viscosity measurement to ensure accuracy. Such a choice is generally in very small quantities or prices in the sample case of high use (the standard measurement of the sample dosage 500ml - 600ml).
2. ULA (ultra-low viscosity adapter) + DV-III + ULTRA rheometer ULA include: installation of firmware, jacket water bath, sample cup, a hand wheel of the clip ring, the end cap, universal joints of the rotor (304 # stainless steel). Optional: a closed sample cup and the rotor (316 # stainless steel). ULA specifically used to measure the viscosity of low viscosity fluids, for Newtonian fluids and non-Newtonian fluids are applicable, in which LV model of the viscosity measurement range 1cp - 10cp. ULA can accurately measure low viscosity fluid viscosity, and can be carried out under the specified shear rate measurements.
3. Helpath Stand (lifting bracket) + DV-III + ULTRA rheometer Helpath Stand includes: motor, 6 T-type rotor, connectors, boxes, brackets and base. Helpath Stand for testing jelly, paste, cream body, putty putty, gelatin and other non-Newtonian fluid viscosity designed to maintain consistent viscosity measurements on a pseudo-plastic and thixotropic behavior fluid viscosity measurement has better results. Lifting bracket can only single-point viscosity measurement of fluids and can not draw the fluid rheological curve.
4. Vane Spindle (paddle-type rotor) + DV-III + ULTRA rheometer Vane Spindle, including three standard rotor and an optional V-74 (maximum shear stress of up to 10000Pa). Paddle-type rotor in the sample when immersed in the destruction of the sample structure, at least, can keep the sample particles in suspension can draw the flow of data according to the viscosity curve analysis chart, and can be measured at low speed fluid yield stress and yield analysis of fluid behavior information. Paddle-type rotor is mainly used for food, cosmetics, sealing materials, fluid viscosity measurement, but also can be used for a yield behavior of fluids yield stress measurements.
5. Thermosel (heater) + DV-III + ULTRA rheometer Thermosel (maximum temperature up to +300 ℃) includes a rotor SC4 selected by the customer, calibration stand, with safety protection equipment and thermal insulation cap heating furnace, a reusable stainless steel Sheng injector, 5 single-use aluminum Sheng sampler, sampling tool, with RTD temperature probe, programmable temperature controller. Optional one-off Sheng Sampler (100 / piece). Thermosel mainly to solve the thermal sol viscosity and high temperature liquids measurement process needs to relatively high accuracy when the temperature in order to ensure accuracy of the data obtained specifically designed, Thermosel can provide customers with stable, accurate sample temperature measurement environment , Brookfield viscometer used in conjunction with its own high-precision, makes the measurement results not only accurate and reproducible very well.
6. Other parts DIN adapter (this accessory to standard DIN 53019) This accessory is only a small number of samples to customers who designed the sample volume of only 16ml-20ml. Spiral Adapter (Screw adapter) is to test a very thick paste objects, such as solder paste, cosmetics, pharmaceuticals, food and other non-Newtonian fluid viscosity designed spiral adapter can provide a variety of shear rates to detect fluid The pseudo-plastic and thixotropic behavior. Screw adapter can automatically measure the complete rheological curve of materials.