Floating Point Representation Quiz

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Questions and Answers

Which device is primarily used for low flow measurement and provides the most accurate reading?

Orifice

Venturi (correct)

Displacer

Rotameter

Which of the following devices measures level by taking differential pressure?

Displacer (correct)

Venturi

Thermocouple

Infrared

What type of output does a Thermocouple produce?

Resistance in ohms

Pressure in psi

Millivolt signal (correct)

Voltage in volts

Which instrument is not used for temperature measurement but instead for flow measurement?

Rotameter Signup and view all the answers

Which pressure measuring device can provide local analog pressure measurements?

Pressure Gauge Signup and view all the answers

What is the primary function of a Thermo-well?

To protect temperature sensors Signup and view all the answers

What is the primary function of a pyrometer?

To measure the surface temperature of liquids Signup and view all the answers

Which device is most often used for local analog pressure measurement?

Pressure Gauge Signup and view all the answers

What distinguishes a pressure transmitter from a pressure gauge?

Pressure transmitters convert pressure to electrical signals Signup and view all the answers

Which of the following is NOT a type of device found inside a pressure gauge?

Float sensor Signup and view all the answers

What type of measurement does a sight glass provide?

Visual level indication of liquids Signup and view all the answers

What is the characteristic of a pressure transmitter's design?

Pneumatic and electronic configuration Signup and view all the answers

Which measurement device is specifically categorized under differential pressure measurement?

D/P Cell Signup and view all the answers

What type of device would typically be found on a furnace?

Pressure gauge Signup and view all the answers

Which device measures the level using buoyancy?

Float Signup and view all the answers

Which feature is unique to a D/P cell compared to other measurement devices?

Measures by taking differential pressure Signup and view all the answers

What principle does the Displacer operate on to measure the level?

Buoyancy and pressure displacement Signup and view all the answers

Which device provides a visual insight into the process level?

Sight Glass Signup and view all the answers

What type of measurement is primarily provided by the Orifice device?

Flow measurement Signup and view all the answers

In which scenario does the Venturi device provide the most accurate readings?

Low flow measurement Signup and view all the answers

Which statement best describes a characteristic of the Thermocouple?

Generates electrical signals in response to temperature changes Signup and view all the answers

Among these devices, which one is designed to measure small flow rates effectively?

Rotameter Signup and view all the answers

What is the primary function of the D/P Cell?

To measure level by taking the differential pressure Signup and view all the answers

In what form does a Thermocouple signal output into the system?

Signal in millivolts Signup and view all the answers

What physical principle is utilized by the Sight Glass to measure level?

Direct visual observation of liquid height Signup and view all the answers

Study Notes

Measurement Devices Overview

Float:
- Measures liquid level using a hollow ball that ascends to the surface.
- Operates on two positions to indicate different levels.
Sight Glass:
- A transparent tube that shows the fluid level in a process vessel.
- Provides visual access to the process contained within.
D/P Cell (Differential Pressure Cell):
- Measures level by gauging the difference in pressure.
- The design features a smaller bottom than the transmitter version, enhancing accuracy.

Flow Measurement Techniques

Displacer:
- Determines level by calculating differential pressure based on fluid buoyancy.
- As fluid levels increase, it displaces an indicating arm.
Orifice:
- Used for flow measurement with bevel faces downstream.
- Pressure decreases as volume increases; likened to covering a garden hose end.
Venturi:
- Employed in low flow measurement for precise readings.
- Creates pressure drop while minimizing pressure loss during measurement.

Temperature Measurement Tools

Rotameter:
- Assesses small fluid flows using gravity.
- Commonly found in seal pumps and analyzers, ensuring optimal performance.
Thermometer:
- Most prevalent type is J-type, widely used in various applications.
Thermocouple, RTD (Resistance Temperature Detector), and Thermowell:
- Generate output signals in millivolts; RTD measures temperature in ohms.
- Thermowell functions as a protective device for temperature sensors.

Pressure Measurement Devices

Pressure Gauge:
- Provides local analog pressure readings.
- Can integrate one of three mechanisms: bourdon tube, bellows, or diaphragm.
Pressure Transmitter:
- Electronic and pneumatic device used for controlling levels.
- Commonly found in float and level applications.
Delta P Transmitter:
- Frequently utilized for various measurement needs in industrial settings.
Manometer:
- An older yet reliable method for measuring pressure, often used with furnaces or blowers.
- Indicates slight negative pressure on specific sides.

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Description

Test your knowledge on floating point representations in computer science. This quiz covers concepts related to the structure and usage of floating numbers in programming. Ideal for students looking to enhance their understanding of data types.