I would think a small low voltage DC motor turning paddles would do. Vary the voltage to vary the speed. Since the more viscous the fluid, the slower the motor will turn and the less CEMF so current would be directly related to viscosity of the sample
Hello,
Do you have to measure torque with that kind of visc meter?
Actually Brian, some solids are viscous. Glass being one example. However, I doubt the OP had glass in mind when they started this thread.
Mike.
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