Rotoray viscometers are used commonly to measure the viscosity value（also called apparent viscosity）of Newtonian or Non-Newtonian materials under a special rotational speed and a special spindle, but for high polymer m-aterial such as coating, ink and adhesive etc, almost resin, emulsion and material itself are Non-newtonian liuquid. They always show different rheological properties under different shear rate（related to rotational speed and spindle shape）. To compare this rheological properties of different materials, the normal method used in coatings and related materials is measuring its shear thinning（Thix index）and thixotropy：The extent of shear thinning is indicated by the drop in viscosity with increasing rotational speed. The degree of thixotropyis indicated by comparison of viscosities at increasing and decreasing rotational speeds, viscosityrecovery , or viscosities before and after high shear. The high-shear treatment approximates she-aring during paint application. The viscosity behavior measured after high shear is indicative of the characteristics of the paint soon after application.
Biuged offers some different types Rheometers according to different material rhelogical properties. Operator can set different measuring programme according to different requirements（ such as change shear rate automatically）, and using relevant professional software, the materials’rheological properties could be analysed and known well, including simulation of material under different application.
Features
◆ Display sample shear rate and shear stress
◆ Continuous viscosity testing and sound alarm when beyond measurement range
◆ 7 inch high definition touch scree , easy to operate and display rich information. Powerful human-machine interface and various
humanized operation menu for conversion.
◆ Anti-static shell and PC material lifting pole
◆ Build-in temperature probe RTD
◆ ARM chip processor: higher data processing speed
◆ New designed durable small axles
◆ Come with a gigabit ethernet interface to transfer data, reliable and quick.
◆ Come with USB interface, support operate to save measurement through external disk U: single point, continuous and timed saving
ways for option.
◆ Come with RS 232 interface, can print measuring data by mini-printer with less labor.
◆ Calibrated by user, temperature and viscosity correction factor are protected by password, also can be modified by user when they
have reliable and accurate data.
◆ Convert freely between various viscosity units, dynamic viscosity convert kinematic viscosity automatically
◆ Linear calibration by a computer
◆ Come with AC Power adapter 100V-240V, good anti-interference performance.
◆ Accompanied with detailed operation instruction
◆ Professional BGD 1608 programmed analyse software for option, can display sample rheological curve
BGD 158-2S
Rotors
Main Technical Parameters
| Ordering Information → Parameters ↓ | BGD 156/S | BGD 158/S |
| Measurement Range (mPa.s) | BGD 156/1S:1-2M BGD 156/2S:100-13M BGD 156/3S:200-26M BGD 156/4S:800-104M | BGD 158/1S: 1-6M BGD 158/2S: 100-40M BGD 158/3S: 200-80M BGD 158/4S: 800-320M |
| R.P.M (per min) | 0.3-100 | 0.1-250 |
| Rotor Amount | BGD 156（8）/1 : four rotors—No.1, No.2, No.3, No.4 (#0 is optional) BGD 156（8）/2、BGD 156（8）/3、BGD 156（8）/4: six rotors— | |
| Measurement Accuracy | ±1.0% (of the full range) | |
| Repeatability | ±0.5% (of the full range) | |
| Power Supply | Power Adapater （Input：110/220 V；50 /60 Hz； Output：15V；1.2A) | |
| Optional Accessories | BGD 1601—Low viscosity adapter （No.0 rotor） BGD 1602—Small sample adapter（comes with NO.21、NO.27、NO.28、NO.29, and the max. measure range would be reduce one-sixth） BGD 1603—Mini single color printer BGD 1608—Viscometer data collection and programmed analyses software | |
(M=1million)
THD Series—Low Temperature Thermostatic Bath
BGD 1600—Standard Oil（500ml）
BGD 1601—Low Viscosity Adapter（The 0th rotor and can measure 1.0 mPa.s sample）
BGD 1602—Small Sample Adapter（It’s specially designed for customers with small samples and requires only a quantity as small as 5～18ml；Sample cup is easily cleaned, installed, removed, and observed；Accurate data of shear rate and shear stress can be obtained for a minute analysis of the fluid characteristics of the sample；One-off sample cups are available）
BGD 1603—Mini Single Color Printer
BGD 1604—RTD Thermometer（-20℃～120℃）
BGD 1605—Thermoses（It has been designed to accurately measure the viscosity of heated oil, paraffin, asphalt emulsions, medicine, high polymer and similar liquid materials at high temperatures. It allows control of a sample’s temperature at a range of room temperature +300℃. It can program the intelligent thermostat and ensures its temperature fluctuation within 0.1℃. Sample dosage is as small as 10ml, and one-off sample cups are available. Standard type of SC4 spindle can be applied, which is easy to use）
BGD 1608—BGD 157-158 Viscometer data collection and programmed analysis software（Automated data collection and testing； resulting in viscometer graph, and recording measuring data each time；Allowing comparison of at most 10 history data；Output Excel documents；Programmable downloading, Offline working；Analyses data, draw charts and print）
NO.15, Fuzhong Rd., Zhongxin Town,
Zengcheng District, Guangzhou.China
