Exam Question
Tank liquid level sensors are an integral part of ships. Describe with the aid of suitable sketches the working principle of (16)
(a) Capacitive type level sensor
(b) Ultrasonic level sensor
(c) Float
ETO
ETO Exam papers
📅 Oct 2023
Reference Answer
### (a) Capacitive Type Level Sensor
**1. Principle of Operation:**
The operation of a capacitive level sensor is based on the principles of a capacitor. A capacitor stores electrical energy in an electric field, and its ability to do so is measured by its capacitance. The capacitance (C) is determined by the area of the conductive plates (A), the distance between them (d), and the dielectric constant (ε) of the material between the plates.
$$ C = \epsilon \frac{A}{d} $$
**1. Principle of Operation:**
The operation of a capacitive level sensor is based on the principles of a capacitor. A capacitor stores electrical energy in an electric field, and its ability to do so is measured by its capacitance. The capacitance (C) is determined by the area of the conductive plates (A), the distance between them (d), and the dielectric constant (ε) of the material between the plates.
$$ C = \epsilon \frac{A}{d} $$
Full answer on MeoMock — surveyor-grade reference answers for 7,000+ written exam questions.
Prepare on Android — MeoMock on Google Play