ET372 Week 4 Instrumentation and process control Midterm

| January 13, 2016
    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?

Get a 5 % discount on an order above $ 150
Use the following coupon code :
2018DISC
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.
Lab 6 Inline Functions and Function M-Files in Matlab

Category: Homework Help

Our Services:
Order a customized paper today!