Table 2. Elemental error, worst and root square errors. Performance Absolute error output (V) Absolute error transfer to input (cm H20) Linearity error el Hysteresis error eh +/- Sensitivity error es +/- Thermal sensitivity error est Thermal zero drift ezt Worst case error + Root square error +/ Worst case error %FSO Worst case error % Reading Root of sum square error %FSO Root of sum square error %Reading Note: Write the full procedure to find your answers. Answers without a correct procedure will not be accepted. Problem 1. The use of sensors and comparators (33.3p). a) A "1" signal is required to trigger an alarm if the level in a tank is more than 20 m. The level sensor gives an output of 50mV for every 10 cm, what is the required alarm voltage Ver? Draw the op amp diagram with the required inputs and voltage sources. b) If there are waves with amplitude of 40 cm due to pumping, draw the required circuit for designing a dead-band or safety margin. c) Use the Kirchhoff Current Law (KCL) to obtain the equation of the circuit output out that includes the dead-band. d) Assume the input resistance R1 = 5 k 2, and the op amp output high = 5V. What is the value of the required feedback resistance R2 to give a dead-band with a 10 cm safety margin and prevent the comparator output from going low? Explain the hysteresis concept and R2 calculation. Table 2. Elemental error, worst and root square errors. Performance Absolute error output (V) Absolute error transfer to input (cm H20) Linearity error el Hysteresis error eh +/- Sensitivity error es +/- Thermal sensitivity error est Thermal zero drift ezt Worst case error + Root square error +/ Worst case error %FSO Worst case error % Reading Root of sum square error %FSO Root of sum square error %Reading Note: Write the full procedure to find your answers. Answers without a correct procedure will not be accepted. Problem 1. The use of sensors and comparators (33.3p). a) A "1" signal is required to trigger an alarm if the level in a tank is more than 20 m. The level sensor gives an output of 50mV for every 10 cm, what is the required alarm voltage Ver? Draw the op amp diagram with the required inputs and voltage sources. b) If there are waves with amplitude of 40 cm due to pumping, draw the required circuit for designing a dead-band or safety margin. c) Use the Kirchhoff Current Law (KCL) to obtain the equation of the circuit output out that includes the dead-band. d) Assume the input resistance R1 = 5 k 2, and the op amp output high = 5V. What is the value of the required feedback resistance R2 to give a dead-band with a 10 cm safety margin and prevent the comparator output from going low? Explain the hysteresis concept and R2 calculation
