Measurements & Instrumentation

Use this for “Eight readings average 12.46 mm with s = 0.18 mm. Give the 95% interval for the true value.”

Use this for “Two thermocouples read 85.2 ± 0.4 °C and 60.7 ± 0.3 °C. Find the temperature difference and its uncertainty.”

Use this for “A 10 kΩ NTC thermistor (at 25 °C, β = 3950 K) is at 50 °C. What is its resistance?”

Use this for “A thermometer with τ = 4 s goes from 20 °C into 100 °C water. What does it read after 10 s?”

Use this for “A 700 Hz signal is sampled at 1000 Hz. What frequency shows up, and what rate would avoid aliasing?”

Use this for “An RC filter has R = 10 kΩ and C = 0.1 μF. Find the cutoff and the gain at 500 Hz.”

Use this for “A type K thermocouple (about 41 μV/°C) has its reference at 25 °C and its tip at 250 °C. What voltage does it make?”

Use this for “A transmitter spans 200 to 1000 kPa on 4–20 mA. What current at 350 kPa, and what pressure gives 12.8 mA?”