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- Explain a basic measurement system.

- Explain the basic working principles of a variety of temperature sensors.

- Explain the basic working principles of a variety of pressure sensors.

- Explain the basic working principles of a variety of speed transducers.

- Explain the basic working principles of a variety of flow meters.

- Explain the basic working principles of a variety of force gauges.

- Explain the basic working principles of a variety of displacement gauges.

- Explain the basic working principles of a variety of level (depth) gauges.

- Explain in some detail the theory and use of strain gauges.

1. A thermocouple produces an e.m.f. in mV according to the temperature difference between the sensor tip q1 and the gauge head q2 such that e = a(q1-q2) + b(q12-q22)

Given a = 3.5 x 10-2 and b = 8.2 x 10-6 determine the mV output when the tip is at 220oC and the gauge head at 20oC.
(Answer 7.394 mV)

2. Describe the basic construction of a resistance type temperature sensor and state the reason why it is unaffected by the temperature of the gauge head.

3. State two reasons why instrument systems use standard transmission signal of either 4 - 20 mA or 0.2-1 bar.

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