Instrumentation Calibration - [An Introduction]

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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[vladislavkorolkov]

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

[MrDinger]

Very good will be recommending this to my students Thanks

[xeniosm]

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?

[appolusnoble]

I want to know the step by step process for calibration

[roytutorialchannel]

Thank you for teaching my friend I like this video

[EricPham-uibt]

Do mechanical valves also a reference point good enough ?

[joshuasoberanes]

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

[koktungthong]

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]

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[tgaphiltech]

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.

[EricPham-uibt]

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

[BhatakantiEkPravas]

What is the recommended range should be of know instrument compare to plant instrument

[kaifiazmi]

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

[ManuWeihiruku]

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

[williamcollett]

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

[azeezmoshood-gdrd]

Calibration variances, how can I stop that on AGO tank farm for offloading gantry, Offloading gantry.

[samuelmire]

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

[leef]

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

[d_alsaief]

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

[h_kvideography]

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