mY PERSONAL pROJECT IN pHYSICS

1. AN
ORAL PRESENTATION
ON
LIQUID LEVEL SENSING AND MEASUREMENT
(FUEL GAUGE)
PRESENTED
BY
OLUDIMU OLUWAFEMI SAMUEL
PHY/11/6961

2. OUTLINE
• INTRODUCTION
• CLASSIFYING LEVEL TECHNOLOGIES
• POINT MEASUREMENT AND DETECTION SYSTEMS
• CONTINUOUS MEASUREMENT AND DETECTION SYSTEMS
• SAMPLE DIAGRAMS
• THE FUEL GAUGE
• CONCLUSION

3. INTRODUCTION
• Measurement is the estimation of the magnitude of some attribute of an object, such as its
length or weight, relative to a unit of measurement.
• level measurement is the determination of the linear vertical distance between a reference
point and the surface of either a liquid, the top of a solid, or the interface of two liquids.
• There are different sensors and different methods that help in detecting the position of a
surface of liquid.
• Sight glass is the oldest and the simplest level measurement technology used in industrial
environments.

4. CLASSIFYING LEVEL TECHNOLOGIES
• Manual / Mechanical
• The operator uses the device to get a visual indication of the amount of material in the vessel
• Electromechanical
• Unlike manual/mechanical devices, electromechanical devices provide an automated measurement that
can be read remotely.
• Electronic contacting
• Electronic non-contacting
• They provide sophisticated level measurement without ever touching the product

5. POINT MEASUREMENT AND DETECTION SYSTEMS
• Point level measurement sensors are used for the purpose of marking a single liquid
height or for pre-setting a level condition.
• These sensors work as a high alarm that measures the overflow conditions in tanks
through liquid level sensors, or works as a marker.
• The different types of sensors are given below:
• Float Sensor
• Capacitance Sensors
• Conductivity Probes

6. CONTINUOUS MEASUREMENT AND DETECTION SYSTEMS
• Continuous level sensors provides liquid level monitoring of an entire system. This liquid
level sensors are used to measure the fluid level within a specified range, moderately than
at a one point.
• At the specified range the sensors produce an analogue output and directly correlates to
the level in the vessel.
• This measurement system consists of variety of sensors such as:
• Ultrasonic Sensor
• Radar level sensor
• Optical Sensor

7. SAMPLE DIAGRAMS
Level Detection Using Radar Level SensorLevel Detection Using Capacitance Sensor

8. THE FUEL GAUGE

9. CONCLUSION
• The structure of the container where liquid level is to be measured determines
the type of method to be used.
• Before choosing there is need to consider the operating conditions such as
temperature, pressure, type of liquid etc.
• Electrical based methods are more accurate and precise than mechanical based
methods of liquid level measurement.

10. GOD
BLESS YOU
FOR
LISTENING
#ComFeezy