Instrumentation Calibration - [An Introduction]

Рет қаралды 167,697

Күн бұрын

In this video I introduce you to instrumentation calibration. I discuss why calibration is so important in industry. Go over instrumentation calibration process and also talk about how often instrumentation is calibrated.
As we learnt in the transmitter lesson, Instrumentation is measuring the real-life conditions of a plant’s process. Lets take an electronic pressure transmitter that is measuring the pressure inside a vessel. The instrument is connected to the sites control system via a 4-20mA current signal. The control system then gives a readout to our control room operator so he can monitor and know the exact state of the plant.
But how does the control room operator know that the pressure he is seeing on his screen is the exact pressure that is in the vessel, what makes him trust that this instrumentation is accurate and reliable?
In many process industries the precision of the process variables instrumentation is measuring is extremely important, for quality of the product that is being created, The safety of people and equipment and for the profitability of the business.
Regular calibration of the Instrumentation is what gives us this confidence. Calibration is the process of comparing plant instrumentation to a known quantity to check for the instrumentation’s accuracy. Adjustments are then made if the accuracy of the equipment is out of its allowed tolerance. The known quantity Instrumentation is checked against is usually in the form of test equipment that is regularly calibrated to a high degree of accuracy.
Test equipment calibration is often carried out at dedicated calibration labs that will be accredited to certain standards depending on the country you are operating in. Here in UK UKAS is an accreditation body that will ensure a calibration lab is certifying its equipment to the appropriate standard.
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Пікірлер: 62

@dispositivosautomatizados 2 жыл бұрын

Apaixonado pela profissão ❤

@vladislavkorolkov8957 11 ай бұрын

Great video. Pls, don't stop. Keep on posting. Thanks.

@InstrumentProcessManagement 4 ай бұрын

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@ManuWeihiruku Ай бұрын

Am really interested to learn more about it! Thank you very much for video💯🙌

@leef2267 3 жыл бұрын

Great video, very informative as per usual. It would be interesting to see an example of a calibration for various different instruments if it’s possible, maybe a pressure or dp transmitter just being able to see the whole process of the setup/calibration or commissioning would be amazing! Keep up the good work, I’m enjoying where the series of videos is heading

@InstrumentationControl 3 жыл бұрын

Thanks Lee. I'll see what I can do :)

@MrDinger24 2 жыл бұрын

Very good will be recommending this to my students Thanks

@InstrumentationControl 2 жыл бұрын

Thankyou. Hope it helps the students!

@nasseralsaifi2181 4 күн бұрын

Many Thanks, fruitful

@lancec6342 3 ай бұрын

Great video

@xeniosm4549 2 жыл бұрын

Thank you for the useful info. I understand that any errors measured during calibration will inform adjustment of the instrument to reduce errors. But, is it also appropriate to determine a calibration factor/curve that allows you to perform post hoc correction of measurements, rather than adjusting the equipment itself?

@InstrumentationControl 2 жыл бұрын

Hi there, glad you enjoyed the video. It really does depend on the application of the instrumentation that is being calibrated. In most industrial use cases instrumentation is providing live plant data. Adding in a correction factor or linearization curve to DCS / SCADA software, so that the measured value is corrected for an Instrument out of calibration, would be more work than to adjust and re-test the instrument. Hope this helps!

@InstrumentProcessManagement 4 ай бұрын

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@koktungthong9012 3 жыл бұрын

Thanks for sharing. May I know how we set the calibration point of an equipment? Have any specification or standard to refer? Example: the calibration point for an equipment for standard requirement for 20±5°C, 47°C, 50°C and 55°C. Appreciate your reply, thank you.

@InstrumentationControl 3 жыл бұрын

Hi there, the accuracy of calibration requirement isn't usually specified in units as in so many BAR or degrees. Accuracy requirements are usually given as a percentage of the range of the equipment. The standard will depend on the application of the instrumentation, that being said 1% of range is a common standard. So if a temperature transmitter was ranged 50 degrees - 250 degrees then a 1% specification would equal 2 degrees. (250-50) / 100. Hope this helps?

@EricPham-ui6bt 10 ай бұрын

Do mechanical valves also a reference point good enough ?

@EricPham-ui6bt 10 ай бұрын

Could in the field o r underdevelopment country lack equipment calibrate by set zero and range specifications over spectrum be good...thanks for information

@joshuasoberanes5441 Жыл бұрын

Can you make a video on how to take a Differential pressure transmitter out of service/back in service?

@tgaphiltech9151 2 жыл бұрын

Hello , thanks for the video. One more thing i wud like to ask.... Can we do transmitter AO trimming while the transmitter is in service? No pressure calibration involve and its only just AO trimming because when we did the loop check we didn't get the right current as what we feeded.

@InstrumentProcessManagement 4 ай бұрын

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@williamcollett4726 3 жыл бұрын

Good video sir, please post video about dip pipe/bubbler tubes for level measurement.

@InstrumentProcessManagement 4 ай бұрын

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@mychannel2876 2 жыл бұрын

Awesome, thanks

@InstrumentationControl 2 жыл бұрын

Glad you enjoy!

@jasonryan2175 3 жыл бұрын

could you show us you doing a calibration. instrument and meter setup etc :D cheers

@R3yN_86 Жыл бұрын

Great video... can you make a video on how to install a new transmitter into a loop that is made a different manufacturer or upgraded model. I'm an instrument tech on an older oil and gas facility in the gulf of mexico and my background is mainly pneumatic control panels and devices with only SCADA to remotely monitor pressures and status but no control.

@InstrumentProcessManagement 4 ай бұрын

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@kaifiazmi3948 2 жыл бұрын

Please make a video regarding control valve calibration certificate, how get eror%

@7d_alsaief51 3 жыл бұрын

Thanks bro , big efforts .. but we missing you dont be late 😇

@InstrumentationControl 3 жыл бұрын

Hope you enjoy! I'll try to post regularly :)

@7d_alsaief51 3 жыл бұрын

@@InstrumentationControl Appreciate it very much

@jollyscaria1922 2 жыл бұрын

What moeing berkaking

@roytutorialchannel2761 2 жыл бұрын

Thank you for teaching my friend I like this video

@InstrumentationControl Жыл бұрын

Glad you found it useful.

@roytutorialchannel2761 Жыл бұрын

@@InstrumentationControl Oke Thank you very much

@samuelmire9389 Жыл бұрын

Can you do a video general overview of what an instrument technician does for ppl looking at making that their career?

@InstrumentProcessManagement 4 ай бұрын

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@h_kvideography3286 Жыл бұрын

Hi, thank you for such an informative video, I am calibrating my thermocouple, but my error is propagating, for example, it was +_ 0.1 degree C at 20 degree Celsius, it increased to 1 degree C at 100 degrees, and 1.5 degrees C at 200 degree celsius, I want to give one pet value that my thermocouple has this much error, like +_ 1 degree, how can i calculate this over all error

@DiogenesNephew Жыл бұрын

I would think that would be a useless number. Your error is non-linear, so an average error for the operating range doesn't really help the user unless it's a very narrow operating range and the average error is WELL within their allowed tolerance. This isn't the kind of thing I find I have to worry about practically, but I'd think I'd provide at least the max error to be expected across the full range if not a chart or graph for expected error across the operating range given that it's not a constant or linear expected error. But maybe someone in the industry that deals with this actual issue can provide some wisdom.

@dispositivosautomatizados 2 жыл бұрын

❤❤❤❤💥

@appolusnoble2254 3 жыл бұрын

I want to know the step by step process for calibration

@InstrumentProcessManagement 4 ай бұрын

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@dispositivosautomatizados 2 жыл бұрын

❤❤❤❤❤💥

@iicindustrialinstrumentati8303 Жыл бұрын

Good

@mohsenhedayati-sb6fh 8 ай бұрын

❤

@balajiprithviraj5145 3 жыл бұрын

Sir can u cover important topics in process control?

@InstrumentationControl 3 жыл бұрын

I have something in mind for PID / cascade control etc. Keep a look out :)

@balajiprithviraj5145 3 жыл бұрын

@@InstrumentationControl sure thing sir u r doing great work Thanks

@martingarcia2265 3 жыл бұрын

Hey guys I just passed my NCCER test for instrument tech and was wondering if y’all know anybody needing JR techs/entry level techs. I am still pursuing my associates, but was wondering if I could get hired on to get field experience already. Thanks for any info.

@WilisWar 3 жыл бұрын

How many questions was on the test, multiple choice questions? and was it hard?

@martingarcia2265 3 жыл бұрын

@@WilisWar it was 100 questions and they’re all multiple choice. If you read the modules and pay attention it’s not hard just make sure you understand the concepts in each module.

@WilisWar 3 жыл бұрын

@@martingarcia2265 Can you send me a link on where I could do one for instrument tech and do you have to pay? I'm currently on the same path as you going college to get my associate's for instrument tech

@martingarcia2265 3 жыл бұрын

@@WilisWar I took mine for $70 at the HASC, just find an NCCER accredited institution nearby your area.

@WilisWar 3 жыл бұрын

@@martingarcia2265 Thank you I appreciate it! Best of luck to you

@gerardovasquez2064 3 жыл бұрын

More please

@InstrumentationControl 3 жыл бұрын

Glad you enjoyed. Keep an eye out for more content

@InstrumentationControl 3 жыл бұрын

If you need a process meter for carrying out Calibrations on 4-20mA loops then the Fluke 789 is the perfect option. Check out my video on "how to use a process meter" for information. If you want to purchase one. Check out them out here on Amazon amzn.to/3fhDQWj ▶▶Check out brilliant T-shirts / Merch at my store: www.redbubble.com/people/rudd4y/shop?asc=u ▶▶Check out my website for more articles on Instrumentation: www.instrumentationcontrol.info/articles

@refugiocarrillo5466 Жыл бұрын

modbus

@johnjones5354 3 ай бұрын

"What makes the operator trust the instrument"? Answer: they don't. Operators ALWAYS know better. That's why they're operators. I once saw a reactor operator who didn't believe what an instrument was telling him, so he tapped on it. I had to point out to him that tapping on a computer screen really wasn't going to work, but since I was just an instrument tech and he was a reactor operator, he just ignored me and kept tapping. Odd!y enough, the reading didn't change.

@mychannel2876 2 жыл бұрын

May I have your email sir

@InstrumentationControl 2 жыл бұрын

Hi there, it's on my about section of my channel :)