Correct Answer:
A. Radar Level Sensors, Ultrasonic Sensors, Capacitance Sensors, Float Switches, Laser Level Sensors
Explanation:
- A. Correct:
- Radar Level Sensors: Use radio waves to detect the level of the fuel in the tank.
- Ultrasonic Sensors: Use ultrasonic waves to measure the distance to the surface of the fuel.
- Capacitance Sensors: Measure changes in capacitance caused by the fuel level.
- Float Switches: Use a float that moves with the fuel level and activates switches to indicate levels.
- Laser Level Sensors: Use laser beams to measure the distance to the fuel surface.
- B. Incorrect:
- Thermocouples, Strain Gauges, Pressure Transducers, Vibration Sensors, Fiber Optic Sensors: While some of these sensors are used in various industrial applications, they are not typically used for remote level monitoring of fuel oil tanks.
- C. Incorrect:
- Thermometers, pH Meters, Magnetic Field Sensors, Humidity Sensors, Sound Level Meters: These instruments are used for different types of measurements and are not suitable for level monitoring of fuel tanks.
- D. Incorrect:
- Speed Sensors, Proximity Sensors, Displacement Sensors, Optical Sensors, Gas Detectors: These sensors are used in various applications but do not generally serve the purpose of remotely monitoring fuel oil levels.
Correct Answer:
A. Radar Level Sensors, Ultrasonic Sensors, Capacitance Sensors, Float Switches, Laser Level Sensors
Explanation:
- A. Correct:
- Radar Level Sensors: Use radio waves to detect the level of the fuel in the tank.
- Ultrasonic Sensors: Use ultrasonic waves to measure the distance to the surface of the fuel.
- Capacitance Sensors: Measure changes in capacitance caused by the fuel level.
- Float Switches: Use a float that moves with the fuel level and activates switches to indicate levels.
- Laser Level Sensors: Use laser beams to measure the distance to the fuel surface.
- B. Incorrect:
- Thermocouples, Strain Gauges, Pressure Transducers, Vibration Sensors, Fiber Optic Sensors: While some of these sensors are used in various industrial applications, they are not typically used for remote level monitoring of fuel oil tanks.
- C. Incorrect:
- Thermometers, pH Meters, Magnetic Field Sensors, Humidity Sensors, Sound Level Meters: These instruments are used for different types of measurements and are not suitable for level monitoring of fuel tanks.
- D. Incorrect:
- Speed Sensors, Proximity Sensors, Displacement Sensors, Optical Sensors, Gas Detectors: These sensors are used in various applications but do not generally serve the purpose of remotely monitoring fuel oil levels.