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In viscosity measurement, temperature control is very important. In this research, temperature distribution effect of vibrational viscometers was analyzed. Vibrational viscometer was designated amongst other viscometer types due to inexpensiveness, handiness and efficacious continuous viscosity measurement capability. The research was conducted in three parts. In the first part; heat generation problem of boundary layers of oscillators of vibrational viscometers was analyzed. Experiments prove that due to the friction between the oscillators and the fluids, heat is generated from the vibrational boundary layer of the oscillators. In the second part, unequal temperature distribution problem of vibrational viscometers was analyzed. When heater generates heat during continuous viscosity measurement, temperature disperses every part of a fluid and affects the viscosity of the fluid. Therefore, it may not be possible to …