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This was a really great video, in 8 minutes I basically understand a concept that was a problem for me as a new tech. One question though about the three wire: You mentioned in a 3-wire configuration that electrical interference on the process signal could cause a fault condition. Is this also not the case with all the other systems? Maybe something I'm missing there.
Thank you so much for your comment and we are thrilled to hear that the video helped you understand the concept of 2, 3, and 4 wire transmitters! Regarding your question about electrical interference, let us clarify: If electrical interference is a concern, particularly in environments with high levels of electrical noise, it is often recommended to use a 4-wire transmitter or employ additional measures such as shielding, isolation barriers, or other techniques to ensure proper signal integrity and minimize the impact of interference.
Would you please be more specific? If I want to answer your question: as long as the power supplied to the transmitter and as long as no maintenance is needed for the transmitter
It depends on what type of transmitter you use on the field. Large transmitters usually need a separate power supply (as we explained in this video), and small transmitters often use the internal circuitry of the PLC power supply to operate.
@@Automatedo I just looked at my PLC and read the datasheet, and it's true that there is an internal power supply from the PLC which is beside the cpu and I don't need to buy an external power supply anymore. Thank you very much. I'm waiting for your next video🔥
"Great video! This is one of the best sources of information I’ve found on this topic. The explanations are clear and super helpful. I’m curious, what tools or software do you use to make videos like this? The production quality is fantastic! Thanks for sharing such valuable content!"
Hi, if I have to use a 4-wire transmitter in Zone-0&1 areas because Accuracy is critical. Then how to consider safety? Should I depend on an explosion-proof enclosure?
great video! i have a question: every explation i found of the 2 wire transmitter mentioning an external PS, i have in a system a transmitter directly connected to the PLC analog input channel so in this case is it the PLC working as a PS ?? thank you!
That is for the electrons. The technical current flow in circuit diagrams is ALWAYS from POSITIVE to NEGATIVE. If you look it up you will find out that it has historical reasons. And plus it does work in any circuit analysis because you simply follow the path of the positive charges instead of the electrons. It is just a model to explain cause and effect.
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