🌟 Sensors vs Switches: The Complete Introduction (Voltage, Current, & Resistance)🌟 Ep. 33

Описание: 🎯 What is the difference between a Switch and a Sensor? A Switch tells you "Yes/No." A Sensor tells you "How Much."

In this kick-off episode for our new 10-part Sensors Series, we break down the entire landscape of industrial sensing. We cover the three main signal families (Voltage-generating, Current-generating, and Resistive), how to choose the right device for the job, and the "Signal Conditioning" tricks used to make tiny signals readable by a PLC.

In this lesson:
0:00 Intro: Switches vs Sensors
1:54 Voltage-Generating Sensors (Thermocouples & Mics)
2:13 Current-Generating Sensors (Photodiodes)
2:30 Resistive Sensors (Strain Gauges, RTDs)
2:54 Capacitance & Inductance Sensors (LVDT, Pressure)
4:08 Signal Conditioning: Amplifiers & Wheatstone Bridges
5:10 Selection Checklist: Accuracy vs Precision vs Response
6:03 Safety: Broken Wire Detection & Drift
6:47 Mini Lab: Real-World Sensor Demos
7:18 History Nugget: Thomas Seebeck's Discovery

The "Big 3" Sensor Families:

Potentiometric (Voltage): Creates its own voltage (e.g., Thermocouple).

Amperometric (Current): Creates its own current (e.g., Photodiode).

Resistive (Passive): Changes resistance; needs an external power source (e.g., RTD, Strain Gauge).

Resources:

Free Textbook (ModEL): http://ibiblio.org/kuphaldt/socratic/...

Join the Community:   / 1725422904737541  

About Crash Course Instrumentation: Hosted by an experienced I&E Instructor, we bridge the gap between textbook theory and real-world refinery maintenance. New videos every Mon/Wed/Fri at 6am PST.

Hashtags: #Sensors #Instrumentation #Automation #Thermocouple #RTD #Engineering #Electronics