Rotational viscometers are typically used to measure the viscosity (also known as apparent viscosity) of Newtonian or non-Newtonian fluids at specific speeds and with specific spindles. However, in industries such as coatings, inks, adhesives, and other polymer materials, nearly all resins, emulsions, and finished products are non-Newtonian fluids. These materials exhibit different rheological behaviors under varying shear rates (dependent on rotational speed and spindle geometry).
To compare the rheological properties of different materials, a common industry practice is to evaluate their thixotropy or dilution index. This involves measuring the proportional change in viscosity when increasing or decreasing spindle speed to characterize shear-thinning behavior, or comparing viscosity values before and after high-shear conditions to assess thixotropic recovery.
BGD offers several rheometer models tailored to different material rheological properties. Test operators can customize testing programs (e.g., automatic shear rate adjustment) and leverage specialized software to comprehensively analyze material rheology, including simulations of real-world application scenarios.
Main Technical Parameters
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Ordering Information → Parameters ↓ |
BGD 168/L |
BGD 168/M |
BGD 168/H |
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Measurement Range (mPa.s) |
1-6 M |
50-40M |
400-320M |
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R.P.M (per min) |
0.1-250 |
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Rotors |
LV1、LV2、LV3、LV4 |
RV2、RV3、RV4、RV5、RV6、RV7 |
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Measurement Accuracy |
±1.0% (of the full range) |
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Repeatability |
±0.5% (of the full range) |
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Power Supply |
Power Adapter （Input：110/220 V；50 /60 Hz； Output：12V；2A) |
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Optional Accessories |
BGD 162/Z-004---UL Adapter（LV0 rotor+Specified Container） BGD 168/Z-003---Small Sample Adapter（SC21，SC27，SC28，SC29 four rotors，and the max. measuring range would be different） BGD 168/Z-004---Rheometer Control and Data Analysis Software BGD 845/846--- Low-high Temperature Circulating Bath |
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