I took a class with Dr. Salsbury, one of the best professors and classes I had. Clear, concise, consistent, and interesting lectures. These are great videos- direct from a metrology leader.
I have found the best way to explain calibration to people is to never use the word calibration except in an overarching way. I use the terms performance verification and adjustment. So you test the UUT with a performance verification. If the UUT does not fall within acceptable readings, then you perform an adjustment procedure and then test the unit with a performance verification. This eliminates the confusion of the definition of calibration.
Went to the classes they offer on site and it was a great experience. Learned a lot from Jim he is a great guy and teaches it in a way you can absorb it and retain it. I recommend the classes for anyone in this type of position or planning on going forward in calibration.
I put it in terms of verifying where you are. If your instrument is out and you know it that's all the information you need from a calibration. The error might be acceptable for your use case and so by knowing where you are first, you sometimes realize that you don't need to go anywhere at all.
Thank you! This is such a good video. Our "calibration agents" are insisting that equipments need to follow a specific schedule. Whereas we have been telling them the manufacturer's guide says it can be done at intervals. it doesnt mean specifically 6 months, 1 year or 2 years. Shouldnt calibration be depending on use? the more u use, the often you need to calibrate?
Good question. You are correct that the calibration interval is really dependant on many factors and not standardized across the spectrum. For example, a blacksmith may never calibrated his/her trusty calipers. If they are off by a thou or two, no big deal and low risk. However, an automotive parts manufaturer might calibrate their shop calipers on a yearly basis. Some higher risk use, such as military branches, might calibrate every six months or even shorter! The calibration history of the product (have you noticed any drift in the readings), it's use, and associated risks will help guide your calibration interval decisions.
How my organization always does it is examine the track record of the equipment and see how much its readings change from calibration to calibration. If a piece of equipment doesn't drift from one calibration to another and is seemingly always in tolerance, then you are wasting your money if you calibrate it too often. Conversely, if it is usually out of tolerance when you calibrate it, you probably need to shorten your interval. Also, be aware that a piece of equipment just sitting on a shelf can still drift out of tolerance! For some equipment (particularly in the pressure measurement field), long term storage can be worse for accuracy than frequent use.
For any kind of Technical Support with Software, you can email us at Software.Support@Mitutoyo.com or you can call us at 888-MITUTOYO (648-8869). If you are looking for general information or looking to purchase, you can use this URL to find the closet dealership to you: www.mitutoyo.com/about-us/worldwide-locations/
Calibration should always remain purely measuring against a reference standard and recording the value. Nothing more and nothing less. If I sent you a gauge block to calibrate, would you then try and lap it or weld material onto it to bring it up to specification or adjust it? The fact that equipment becomes more sophisticated and "Adjustable" should never infer that this adjustment is calibration. You will open a whole can of worms in misunderstanding.
@@Arcticroberto9376 Respectfully. Formally, "Calibration is the documented comparison of the measurement device to be calibrated against a traceable reference device." The above formal definition comes from the BIPM (Bureau International des Poids et Mesures). There is no Adjustment inferred in Calibration. In fact if you adjust an instrument or reference device, it requires re-calibration in order to issue a certificate. Calibration is always the final step of the process. The all important certification and documentation. An instrument should be able to pass through any certified calibration lab with all results matching within the degree of uncertainty. This is why we can produce complex things to tight tolerances in different parts of the world and have them assemble perfectly at the destination location. I do not wish to detract from an otherwise fine video, however I have seen a rise in the misuse of the term calibration that cannot be ignored. The consequence can prove to be very costly.
@@Arcticroberto9376 Back in the late 70's I studied a three year course in Engineering Inspection and Metrology at the Royal Melbourne Institute of Technology as part of my toolmaker apprenticeship training. We used to hold Mitutoyo measuring tools in high regard. Maybe I was mistaken.
![Instrumentation Calibration - [An Introduction]](/img/n.gif)
I took a class with Dr. Salsbury, one of the best professors and classes I had. Clear, concise, consistent, and interesting lectures. These are great videos- direct from a metrology leader.
Thanks for sharing! We are always happy to hear this!
I have found the best way to explain calibration to people is to never use the word calibration except in an overarching way. I use the terms performance verification and adjustment. So you test the UUT with a performance verification. If the UUT does not fall within acceptable readings, then you perform an adjustment procedure and then test the unit with a performance verification. This eliminates the confusion of the definition of calibration.
I like your thinking.
Lol Jim Salsbury is my spirit animal. Love that you quoted the VIM!
Went to the classes they offer on site and it was a great experience. Learned a lot from Jim he is a great guy and teaches it in a way you can absorb it and retain it. I recommend the classes for anyone in this type of position or planning on going forward in calibration.
I put it in terms of verifying where you are. If your instrument is out and you know it that's all the information you need from a calibration.
The error might be acceptable for your use case and so by knowing where you are first, you sometimes realize that you don't need to go anywhere at all.
Great its very helpful...Thanks from INDIA 🇮🇳
Most welcome!
Love the ending Jim, thank you
Glad you liked it.
Garrus Vakarian likes this video 👍
Can it wait for a bit? I'm in the middle of some calibrations
Thank you! This is such a good video. Our "calibration agents" are insisting that equipments need to follow a specific schedule. Whereas we have been telling them the manufacturer's guide says it can be done at intervals. it doesnt mean specifically 6 months, 1 year or 2 years. Shouldnt calibration be depending on use? the more u use, the often you need to calibrate?
Good question. You are correct that the calibration interval is really dependant on many factors and not standardized across the spectrum. For example, a blacksmith may never calibrated his/her trusty calipers. If they are off by a thou or two, no big deal and low risk. However, an automotive parts manufaturer might calibrate their shop calipers on a yearly basis. Some higher risk use, such as military branches, might calibrate every six months or even shorter! The calibration history of the product (have you noticed any drift in the readings), it's use, and associated risks will help guide your calibration interval decisions.
How my organization always does it is examine the track record of the equipment and see how much its readings change from calibration to calibration. If a piece of equipment doesn't drift from one calibration to another and is seemingly always in tolerance, then you are wasting your money if you calibrate it too often. Conversely, if it is usually out of tolerance when you calibrate it, you probably need to shorten your interval. Also, be aware that a piece of equipment just sitting on a shelf can still drift out of tolerance! For some equipment (particularly in the pressure measurement field), long term storage can be worse for accuracy than frequent use.
Great job! Keep them coming!
I need this! It will truly help me to do my job more accurate.... Thanks Mitutoyo!
How i get job opportunity in mitutoyo
It explains why finding replacement parts is such a pain.
Calibration. Thank you
Garrus liked this video.
Very helpful information. Thanks
Glad it was helpful!
Hi, I'm considering changing career from Draughting to Metrology. With the 4th Industrial revolution, will Metrologist be relevant?
Of course, metrology is an area with a lot of job opportunities, and miss people who have experience in this field..
Yes. But you have to be open also to international practices. Some regulators are too rigid.
Could you help me with the software the Technik service use and the work involved in it
For any kind of Technical Support with Software, you can email us at Software.Support@Mitutoyo.com or you can call us at 888-MITUTOYO (648-8869). If you are looking for general information or looking to purchase, you can use this URL to find the closet dealership to you: www.mitutoyo.com/about-us/worldwide-locations/
Excellent
Still don’t understand what calibration is or how it works
#5 (interim) does nothing since the measurement is not annotated anywhere.
thank you
Hi Mitutoyo America
Why I am here? 😃
Calibration should always remain purely measuring against a reference standard and recording the value. Nothing more and nothing less. If I sent you a gauge block to calibrate, would you then try and lap it or weld material onto it to bring it up to specification or adjust it? The fact that equipment becomes more sophisticated and "Adjustable" should never infer that this adjustment is calibration. You will open a whole can of worms in misunderstanding.
I would say that verification is just measuring and recording. Calibrating it would verify and make adjustments if needed
@@Arcticroberto9376 Respectfully.
Formally, "Calibration is the documented comparison of the measurement device to be calibrated against a traceable reference device." The above formal definition comes from the BIPM (Bureau International des Poids et Mesures).
There is no Adjustment inferred in Calibration. In fact if you adjust an instrument or reference device, it requires re-calibration in order to issue a certificate. Calibration is always the final step of the process. The all important certification and documentation. An instrument should be able to pass through any certified calibration lab with all results matching within the degree of uncertainty. This is why we can produce complex things to tight tolerances in different parts of the world and have them assemble perfectly at the destination location.
I do not wish to detract from an otherwise fine video, however I have seen a rise in the misuse of the term calibration that cannot be ignored. The consequence can prove to be very costly.
@@ernestopesto2874 yeah but they're French so their opinion doesn't count
@@Arcticroberto9376 Back in the late 70's I studied a three year course in Engineering Inspection and Metrology at the Royal Melbourne Institute of Technology as part of my toolmaker apprenticeship training. We used to hold Mitutoyo measuring tools in high regard. Maybe I was mistaken.
stop touching that block without gloves on
Misunderstand me RIGHT! (This comment is subject to calibration, of course!)