Principles of Level Measurement (List)

Hello, my name is Hector (email: hcarrasco@instrumentacionycontrol.net), Industrial Instrument Technician profession, this is the first time I am addressing you and I wanted in this first meeting to be able to share a little of what I have worked on in my work experience.

This first meeting will be dedicated to level measurement of all types: solids, liquids, foams, closed tanks, open tanks, turbulent water, interfaces, etc.

First of all, we need to understand some key definitions that will be important for understanding the topic at hand. This will make it easier for us to understand the applications, interpret principles, envision future applications, and, most importantly, establish a foundation that will allow us to acquire new knowledge.

Let's get to work.

In industrial applications, we have many processes that require measuring the contents of tanks, whether open, closed, with interfaces, solid, liquid, etc. We consider the characteristics of the tank being measured, its shape, process temperature, internal pressure, and other factors. For these measurements, we have various types of equipment, primarily ultrasonic, radar, microwave, contact, nuclear, and pressure-based. Therefore, we will refer to the definitions that apply to these processes.

The main thing we must pay attention to when we have a level measurement application is WHAT WE ARE GOING TO MEASURE, WHY WE ARE GOING TO MEASURE, this is because we already have a significant percentage of information that will help us achieve our objective.

Some of the most important principles and types of measurement are listed below:

ULTRASONIC LEVEL MEASUREMENT

RADAR LEVEL MEASUREMENT

MICROWAVE LEVEL MEASUREMENT

LEVEL MEASUREMENT BY NUCLEAR SOURCES OR RADIATION

LEVEL MEASUREMENT BY HYDROSTATIC PRESSURE

LEVEL MEASUREMENT BY PRESSURE DIFFERENTIAL

LEVEL MEASUREMENT BY POSITION LIMITS

LEVEL MEASUREMENT BY SIGHT SIGHT

CAPACITANCE LEVEL MEASUREMENT

AVERAGE LEVEL BY CONDUCTIVITY

LEVEL MEASUREMENT BY FLOATS

LEVEL MEASUREMENT BY RESISTANCE VARIATION

VIBRATION LEVEL MEASUREMENT BY SOFTWARE

All these methods will help us achieve the purpose of CONTROL, INDICATION OR RECORDING, to safeguard our Process.

We will look at the generic concepts of these applications and then go on to describe the principles of each one in particular, before taking a specific brand of equipment and describing its quick configuration.

As an example in an application for indirect foam level measurement

LEVEL MEASUREMENT IN A COPPER SULFIDE FLOTATION CELL.