ET372 Week 4 Instrumentation and process control Midterm

    1. A temperature sensor is exposed to a sudden change of 20oC to 80oC. The sensor outputs 0.02 volts for every oC of temperature and has a 2.3 second time constant.

    a. What is the sensor output voltage at 1.5 seconds?

    b . At what time, t, does the sensor output become 1.0 volt?


  •  2. A sensor, R, that changes resistance is used in a bridge circuit as shown below.

    a. What sensor resistance, R, will null the bridge?

    b. What is the off-null voltage if R changes by 0.5 Ω?


3. A measurement system has noise above 20 kHz and the data signal frequency is between 100 and 500 Hz. Design an RC filter that reduces the noise by 95%, i.e., only 5% is left. Show the schematic and the component values.


4. Given a Type J TC with a 25oC reference.

a. What is the temperature if the TC voltage is 22.87 mV?

b. What voltage would result from a temperature of 225oC?


5. A 10-bit ADC has a 5.00-volt reference.

a. What binary output is produced by an input of 3.04 volts?

b. Suppose the output is found to be 1F4h. What is the possible input voltage?


6. A 12 bit bipolar DAC has a 10-volt reference.

a. If the hex input is 5D7h what is the DAC output voltage?

b.What input is required to get a zero volt output?

Place Similar Order Now!

  • Our Support Staff are online 24/7
  • Our Writers are available 24/7
  • Most Urgent order is delivered with 6 Hrs
  • 100% Original Assignment Plagiarism report can be sent to you upon request.