3. The results of a simple calibration of pressure transducer and its specification are shown in Figure 1 and Table 1. The sensitivity of the pressure sensor is 0.5 V/kPa (given by manufacturer) and the linear curve fit for the upscale calibration is given as y = 0.51x + 0.02 . a) Calculate the hysteresis and linearity errors for this calibration. b) Please discuss either the pressure transducer can now be used for the actual measurement or not. Table 1: Pressure tansducer specification Operation Input range 0- 5 kPa + 15 V 0- 2.5 V Excitation Output range Performance Linearity error + 3 % Hysteresis Less than + 15% + 5% Sensitivity error Thermal sensitivity error + 0.02% / °C Temperature range 0 – 50 °C upecate mesuremen 2 1.5 bounscae mesrement 0.5 35 pressure, Pa Input, pressure Ouput, voltage (V) (kPa) Upscale Downscale 0.00 0.00 1 0.53 0.48 2 1.05 0.94 3 1.62 1.45 4 2.12 1.95 2.50 2.50 Figure 1: Calibration results (plot and tabulated data)

3. The results of a simple calibration of pressure transducer and its specification are shown in Figure 1 and Table 1. The sensitivity of the pressure sensor is 0.5 V/kPa (given by manufacturer) and the linear curve fit for the upscale calibration is given as y = 0.51x + 0.02 . a) Calculate the hysteresis and linearity errors for this calibration. b) Please discuss either the pressure transducer can now be used for the actual measurement or not. Table 1: Pressure tansducer specification Operation Input range 0- 5 kPa + 15 V 0- 2.5 V Excitation Output range Performance Linearity error + 3 % Hysteresis Less than + 15% + 5% Sensitivity error Thermal sensitivity error + 0.02% / °C Temperature range 0 – 50 °C upecate mesuremen 2 1.5 bounscae mesrement 0.5 35 pressure, Pa Input, pressure Ouput, voltage (V) (kPa) Upscale Downscale 0.00 0.00 1 0.53 0.48 2 1.05 0.94 3 1.62 1.45 4 2.12 1.95 2.50 2.50 Figure 1: Calibration results (plot and tabulated data)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Question

3. The results of a simple calibration of pressure transducer and its specification are
shown in Figure 1 and Table 1. The sensitivity of the pressure sensor is 0.5 V/kPa
(given by manufacturer) and the linear curve fit for the upscale calibration is given
as y = 0.51x +0.02 .
a) Calculate the hysteresis and linearity errors for this calibration.
b) Please discuss either the pressure transducer can now be used for the actual
measurement or not.
Table 1: Pressure tansducer specification
Оperation
Input range
0- 5 kPa
+ 15 V
0 - 2.5 V
Excitation
Output range
Performance
Linearity error
± 3 %
Hysteresis
Less than + 15%
Sensitivity error
+ 5%
Thermal sensitivity error
+ 0.02% / °C
Temperature range
0 - 50 °C
2.5
upacale mesurement
downscale measurement
0.5
0.5
3.5
pressure, kPa
Оприt, voltage ((V)
Upscale
Input, pressure
(kPa)
Downscale
0.00
0.00
1
0.53
0.48
2
1.05
0.94
3
1.62
1.45
4
2.12
1.95
5
2.50
2.50
Figure 1: Calibration results (plot and tabulated data)

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