The Callendar-Van Dusen polynomial used here to predict that for any given temperature, an excitation current increment exists that will give an accurate readout, e.g., 0.5% for 33 °C, 1% for 67 °C, and 1.5% for 100 °C
Figure 2. The Callendar-Van Dusen polynomial used here to predict that for any given temperature, an excitation current increment exists that will give an accurate readout, e.g., 0.5% for 33 °C, 1% for 67 °C, and 1.5% for 100 °C