A lot of people have the morning routine of stepping on a scale to check their weight. What most people don’t know is that they are using a very simple “load cell” to find out their weight. Old scales used to use weights to try and level out the two sides of the scale; now we have methods that measure weight automatically. The first thing we …
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A temperature sensor is a device that measures the temperature of an object or environment. It typically consists of a sensing element, such as a thermocouple, RTD, thermistor, or semiconductor, that responds to changes in temperature by producing a measurable electrical signal. The sensor’s output can be read by an electronic device, such as a thermometer or a programmable controller, which can then display or control …
Temperature Sensor? Read More »
Sensors are the figurative eyes and ears of a control system. In general, if you want to control it, you must sense it. Because the controls engineer is often called onto specify sensors and deal with sensing problems, sooner or later we all get more than enough familiarity with them. In this article, we are going to familiarize you with the types of sensors that we …
In this article you will learn all about HMIs. Maybe you have never heard of an HMI, but I’ll bet you encounter them pretty regularly. HMI is short for Human Machine Interface. We use HMIs in industry to control and monitor machines. A very common HMI that you all encounter on a regular basis would be an ATM machine. The screen and pushbuttons allow you to …
Today you will learn all about P&ID Diagram. You may be thinking, “What in the world is a P&ID Diagram? In industry, these are piping and instrumentation diagrams. P&ID for short. Most manufacturing facilities have compressed air, steam, chilled water, and other processes that require the use of piping. All of these forms of energy and processes require instrumentation to control them which is usually in …
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In this article will learn all about a Legend. A legend simply put is a chart with all of the symbols used in an individual diagram. It could be an electrical, mechanical, P&ID, or other types of diagram. This is an invaluable tool because it simply is not possible to remember every single symbol used in our diagrams. There are hundreds if not thousands of components …
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