Rashid Ali
YouTube Content Strategist & Technical Video SEO Expert
New to Contra
Rashid is ready for their next project!
A simple idea turned into 11,600+ engineers learning worldwide.
A few years ago, I decided to simplify one of the most technical industrial tools the SC200 Turbidity Analyzer setup and working process. I wanted to break it down so clearly that any plant operator or automation engineer could master it instantly. Today, looking at the analytics, it blows my mind: 11,600+ Views from professionals across the globe 386+ Hours of total watch time 90+ New Subscribers added to the community It proves one thing: When you solve real-world industrial problems and share knowledge simply, people notice.
Are you working with industrial instrumentation or water treatment systems? Let’s connect and share insights
#IndustrialAutomation (https://www.linkedin.com/search/results/all/?keywords=%23industrialautomation&origin=HASH_TAG_FROM_FEED&lipi=urn%3Ali%3Apage%3Ad_flagship3_detail_base%3Bd3Ute%2FogTv6cSs4lP0oGoQ%3D%3D) hashtag#WaterTreatment (https://www.linkedin.com/search/results/all/?keywords=%23watertreatment&origin=HASH_TAG_FROM_FEED) hashtag#Instrumentation (https://www.linkedin.com/search/results/all/?keywords=%23instrumentation&origin=HASH_TAG_FROM_FEED) hashtag#Engineering (https://www.linkedin.com/search/results/all/?keywords=%23engineering&origin=HASH_TAG_FROM_FEED) hashtag#TurbidityAnalyzer (https://www.linkedin.com/search/results/all/?keywords=%23turbidityanalyzer&origin=HASH_TAG_FROM_FEED) hashtag#ContentCreation (https://www.linkedin.com/search/results/all/?keywords=%23contentcreation&origin=HASH_TAG_FROM_FEED) hashtag#LearningAndGrowing (https://www.linkedin.com/search/results/all/?keywords=%23learningandgrowing&origin=HASH_TAG_FROM_FEED) hashtag#automation (https://www.linkedin.com/search/results/all/?keywords=%23automation&origin=HASH_TAG_FROM_FEED)
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Why We Use 4-20mA Signal in Instrumentation?
In process control and instrumentation, digital protocols are everywhere, but the humble 4-20mA current loop remains the absolute backbone of analog signal transmission.
Ever wondered why this standard has stood the test of time across plants worldwide? Here is a quick breakdown:
Signal Integrity over Long Distances: Unlike voltage signals (which suffer from voltage drops over long cable runs due to wire resistance), current loops transmit data reliably across hundreds or even thousands of meters.
Built-In Fault Detection (Live Zero): Because 0mA represents an actual broken wire or power failure, using 4mA as the baseline (0% process variable) allows control systems to instantly detect open-circuit faults.
Immunity to Electrical Noise: Current signals are far less susceptible to electromagnetic interference (EMI) commonly found in heavy industrial environments compared to low-level voltage signals.
Simple Two-Wire Power & Communication: A single twisted pair can simultaneously power the field transmitter and transmit the process variable (4mA = 0%, 20mA = 100%).
Whether you're troubleshooting a control loop or calibrating a smart transmitter, mastering 4-20mA fundamentals is essential for every instrumentation professional.
What is your go-to method for checking loop calibration in the field? Let’s discuss in the comments!
hashtag#Instrumentation (https://www.linkedin.com/search/results/all/?keywords=%23instrumentation&origin=HASH_TAG_FROM_FEED) hashtag#ProcessAutomation (https://www.linkedin.com/search/results/all/?keywords=%23processautomation&origin=HASH_TAG_FROM_FEED) hashtag#IndustrialAutomation (https://www.linkedin.com/search/results/all/?keywords=%23industrialautomation&origin=HASH_TAG_FROM_FEED) hashtag#420mA (https://www.linkedin.com/search/results/all/?keywords=%23420ma&origin=HASH_TAG_FROM_FEED) hashtag#ControlSystems (https://www.linkedin.com/search/results/all/?keywords=%23controlsystems&origin=HASH_TAG_FROM_FEED) hashtag#ElectricalEngineering (https://www.linkedin.com/search/results/all/?keywords=%23electricalengineering&origin=HASH_TAG_FROM_FEED) hashtag#EngineeringLife (https://www.linkedin.com/search/results/all/?keywords=%23engineeringlife&origin=HASH_TAG_FROM_FEED) hashtag#ProcessControl (https://www.linkedin.com/search/results/all/?keywords=%23processcontrol&origin=HASH_TAG_FROM_FEED) hashtag#PlantMaintenance (https://www.linkedin.com/search/results/all/?keywords=%23plantmaintenance&origin=HASH_TAG_FROM_FEED) hashtag#FieldInstruments (https://www.linkedin.com/search/results/all/?keywords=%23fieldinstruments&origin=HASH_TAG_FROM_FEED)
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Advanced PIDE Temperature Control Logic | Allen Bradley ControlLogix PLC | Studio 5000
Successfully developed and tested an advanced PIDE temperature control loop using Rockwell Studio 5000.
This project includes process variable monitoring, setpoint control, automatic/manual operation, and industrial process optimization.
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Industrial Electrical Single Line Diagram (SLD) Design | AutoCAD Electrical Expert
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