66
instrument (±2 cP). Thus, it can be concluded that our procedure for taking the viscosity
measurements is accurate.
Figure 3.20. Viscosity vs. temperature curve for the given standard viscosity fluid. The fluid has a
viscosity of 493 cP at 25
°
C.
3.5.4 Thermocouples Calibration
The heat transfer results are directly affected by the temperature measurements. Thus, all
the thermocouples used in this experiment must be calibrated to determine their accuracy.
Both types of thermocouples were calibrated using the temperature bath and an RTD. The
temperature range for calibration was from around 7–70°C, which falls under the
operating temperature range for this experiment. It can be seen from Figures 3.21 and
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