Types of Signal in Instrumentation | AI | AO | DI | DO | DCS | PLC | Instrumentation

ELECTRICAL INSTRUMENTATION SIGNALS
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Calibration Procedure of Level Transmitter by using HART 475 field communicator in Hindi | URV | LRV
• Calibration Procedure ...
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How to read Wiring from field to DCS/PLC | Marshaling Cabinet | Field Junction Box| Flow of signal
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ON/ OFF Temperature Controller Masibus LC5296-H Configuration | controller programming | LC5296AT
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How did the Control valve nameplate read? | Leakage Class, Cv, Rating ASME rating in Hindi
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Wiring of 2 Wire & 4 Wire transmitters of DCS\PLC in Analog Input! Electrical & Automation
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Analog and digital signals
Voltage signal systems
Current signal systems
Tachogenerators
Thermocouples
pH measurement
Strain gauges
Contributors
Analog and digital signals
Instrumentation is a field of study and work centering on measurement and control of physical processes. These physical processes include pressure, temperature, flow rate, and chemical consistency. An instrument is a device that measures and/or acts to control any kind of physical process. Due to the fact that electrical quantities of voltage and current are easy to measure, manipulate, and transmit over long distances, they are widely used to represent such physical variables and transmit the information to remote locations.
A signal is any kind of physical quantity that conveys information. Audible speech is certainly a kind of signal, as it conveys the thoughts (information) of one person to another through the physical medium of sound. Hand gestures are signals, too, conveying information by means of light. This text is another kind of signal, interpreted by your English-trained mind as information about electric circuits. In this chapter, the word signal will be used primarily in reference to an electrical quantity of voltage or current that is used to represent or signify some other physical quantity.
An analog signal is a kind of signal that is continuously variable, as opposed to having a limited number of steps along its range (called digital). A well-known example of analog vs. digital is that of clocks: analog being the type with pointers that slowly rotate around a circular scale, and digital being the type with decimal number displays or a "second-hand" that jerks rather than smoothly rotates. The analog clock has no physical limit to how finely it can display the time, as its "hands" move in a smooth, pauseless fashion. The digital clock, on the other hand, cannot convey any unit of time smaller than what its display will allow for. The type of clock with a "second-hand" that jerks in 1-second intervals is a digital device with a minimum resolution of one second.
Both analog and digital signals find application in modern electronics, and the distinctions between these two basic forms of information is something to be covered in much greater detail later in this book. For now, I will limit the scope of this discussion to analog signals, since the systems using them tend to be of simpler design.
With many physical quantities, especially electrical, analog variability is easy to come by. If such a physical quantity is used as a signal medium, it will be able to represent variations of information with almost unlimited resolution.
In the early days of industrial instrumentation, compressed air was used as a signaling medium to convey information from measuring instruments to indicating and controlling devices located remotely. The amount of air pressure corresponded to the magnitude of whatever variable was being measured. Clean, dry air at approximately 20 pounds per square inch (PSI) was supplied from an air compressor through tubing to the measuring instrument and was then regulated by that instrument according to the quantity being measured to produce a corresponding output signal. For example, a pneumatic (air signal) level "transmitter" device set up to measure height of water (the "process variable") in a storage tank would output a low air pressure when the tank was empty, a medium pressure when the tank was partially full, and a high pressure when the tank was completely full.

[@Graphicdesignskills007]

Great Channel

[@ElectricalAndautomation_guru]

Thanks

[@rockyron28]

Nice explain sir

[@ElectricalAndautomation_guru]

Keep watching

[@nileshnaik9518]

Nice information be

[@ElectricalAndautomation_guru]

So nice of you

[@muradali8069]

good

[@ElectricalAndautomation_guru]

Welcome, thanks for the appreciation please share the video with others and do not forget to subscribe to the channel

[@himanshusingh-qe6ys]

Keep up with the great work. 👍
Best wishes.

[@ElectricalAndautomation_guru]

Thanks a lot 😊

[@shailendrajadon3599]

Nice information sir

[@ElectricalAndautomation_guru]

Thanks, please share with others.

[@manishjadhav3473]

I wait for you thanks

[@ElectricalAndautomation_guru]

Thanks for your kindness and please help us to grow again by sharing video with others to your technical social media groups and platform.

[@aviray5877]

Look at 5:30 TB kuch nhi hoti he, Terminal Block hota he🤣👍👍...
Nice explanation, good work👍❤️🙏🏼

[@ElectricalAndautomation_guru]

Ok, thanks, please share with others!

[@RajmaniM.]

Superb👌👌👍

[@ElectricalAndautomation_guru]

Thanks, please share with otherd

[@sknaushad3465]

Very helpful brother....too good..

[@ElectricalAndautomation_guru]

Thank you, please share with others.

[@nileshdabhi409]

SIR Jo RTD & TC directly DCS card me connect hota hai use use konsa signal kahte hai?

[@ElectricalAndautomation_guru]

That is also called the signal now most of the dc's are making those type of card where we can join directly Thermocouple aud rTd wire

[@Surajgupta1208.]

Same we are used DCS in JSW Steel Limited Karnataka

[@irfanbashir9288]

I would request you that upload a video on PLC and DCS.
Can I say PLC and DCS are same?

[@ElectricalAndautomation_guru]

Already uploaded

[@hiteshjha8850]

Good work amar.. :)

[@ElectricalAndautomation_guru]

Thanks brother.

[@rameshr5272]

Sir, for Analog input what junction box will be used same junction box from field instrumentswill be used for analog output to control valve?

[@ElectricalAndautomation_guru]

Yes, correctj

[@akhilbc1243]

Hi sir...
Rio mai Dc 24 v , khase Milta hai

[@ElectricalAndautomation_guru]

Rio ?

[@akhilbc1243]

@@ElectricalAndautomation_guru ha

[@samirakhtar8154]

Sir how we can control analogue output

[@ElectricalAndautomation_guru]

By changing it's value.

[@akhilesh117]

Sir plc se junction box me wire jaa rhi h aur system cabinet me b plc h.. thoda ispe btayenge?

[@ElectricalAndautomation_guru]

Ok sure

[@neerav2789]

TB means Terminal Block ?

[@ElectricalAndautomation_guru]

Yes,exactly

[@googleaccount518]

please make video on those tags which are itra panel like from RTU have signals from field with io cards & then same RTU is communicating with SCADA that is reemote & hardwired.so for such case how IO define from field to ereu & rtu to SCADA

[@ElectricalAndautomation_guru]

Ok, but your questions is not very clear

[@pardeeppsiingh7068]

Sir aap automation ka course bhi karaate hain kyaa

[@ElectricalAndautomation_guru]

Nahi.

[@rohitsaini1584]

SIr please make a video SIL verification.

[@ElectricalAndautomation_guru]

Ok.

[@rajkapoor-wt5nq]

Flowtransmitter ke aur hart ke saare setting ko batta dizye sir

[@ElectricalAndautomation_guru]

Ok.

[@gannibouy7261]

Last one is Digital output right? DO

[@ElectricalAndautomation_guru]

Yes

[@sharifhossain8830]

আসসালামু আলাইকুম
ভাই
আমরা জানি
Standard signal in Instrumentation
1.Electrical signal
0-10 volt
4-20 ma
2.Pneumatic signal
3-15 psi
3.Hydraulic signal what's?

[@ElectricalAndautomation_guru]

Is somewhere say this!

[@instrumentpower6380]

Sir DCS graphics edit का आपका पुरना विडियो मुझसे डिलिट हो गया है कृपा दुबारा एक विडियो बनाओ न

[@ElectricalAndautomation_guru]

Ok.

[@hemchandsonker6343]

What is pulses o/p and high sepeed input???

[@ElectricalAndautomation_guru]

Pulse output basically given to the process where we have to start stop open close like this things for your example you can start a vfd drive by using it

[@hemchandsonker6343]

@@ElectricalAndautomation_guru sir and high sepeed input??

[@mayankpandey812]

whay is TV

[@ElectricalAndautomation_guru]

Hmm

[@7akm123]

Please English subtitle

[@ElectricalAndautomation_guru]

Ok.

[@jaikrishna7020]

Please explain different type of field instruments and control valves

[@ElectricalAndautomation_guru]

Ok, sure

[@balraj_sharma]

Not so much clearing concept

[@ElectricalAndautomation_guru]

Please tell, what needs to be cleared?

[@balraj_sharma]

@@ElectricalAndautomation_guru I mean to say mixing of concepts is happening, clearly demonstrate one part then go on other.

[@ElectricalAndautomation_guru]

Ok.will keep this in mind for future?

[@jocky201072]

please , can u speak in english...thanks

[@ElectricalAndautomation_guru]

Ok