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More on oscilloscope calibration...

I read with interest the queries regarding uncertainties in oscilloscope bandwidth calibration. There are a number of issues here worth exploring; therefore I have started a new thread to address some...

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Uncertainty in specifications-2182

Hi all!I have a question for you, regarding the uncertainty related to the specifications of a device.Usually in the specifications section the accuracy of the device is given but it is not stated...

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How do I do this???

I am looking for someone to come and show me how to work out the measurement of uncertainty we need to quote for our equipment...Can anyone help?

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Uncertainty Budget for Calibration of Fans

I have a client who is trying to calculate an uncertainty budget for fans.Anyone able to offer practical advice and assistance??

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Incorporation of Relative Uncertainty & TUR in measureme

Hello all members,Now oftenly mention the relative uncertainty and TUR in the calibration certificates of master equipments. The problem is how the values of relative uncertainty and TUR be...

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confidence level

Hello Allthe confidence levels are one sigma, two sigma and three sigma with respect to 68 %, 95 % and 99 %. Is the confidentence level lie in between any two levels ie 68 -95 % and 95 to 99...

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estimation of type A

Hello AllIf the all observations in calibration of any equipment like dmm or pressure gauge or liquid in glass thermometer. We get the same observations like 10.00 V, 10.00 V and again 10.00 V in dmm...

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Publications

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In-house Calibrations

Hi! I am new to the uncertainty topic and cannot find any definitive guidance on whether uncertainty needs to be stated for in-house calibrations. All our test equipment gets sent away for external...

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Calibration uncertainty

Hi,I'm looking for guidance on how to incorporate uncertainties in the observed response during a calibration into the final estimation of a measurement result. For example, suppose I am calibrating a...

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The unknown systematic error

Hi, I am pleased to inform you for the completeness of my last paper under the title: “The unknown systematic error”( www.uncertainty.gr/error.pdf ) Abstract C.F. Gauss has already pointed out the...

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Electrical Calibration

How to evaluate measurement uncertainty for electrical calibration? I'm sure there is a difference between them...

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UKAS Assessment Manager Vacancy - Last Chance!

Last chance to apply for the UKAS vacancy in the jobs section.We are sifting the applications early next week.

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uncertainity calculation with different units

If I have several units and parameters like pressure, mass & temperature ,How can i combine all of them in an equation to have the combined uncertainity???????

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True Amount of Power (watts) being used?

Hi,I have used a Plug In voltage/Wattage/ digital of the type generally available in Maplins or simular outlets to measure the amount of Wattage (on 240 volt AC) of various items,like Energy saving...

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oscilloscope bandwidth high impedance

Hello,I'm trying to calibrate my oscilloscope bandwidth which has a high impedance (1MOhms). In order to realize it, I have an oscilloscope calibrator. The calibrator provide a 50Ohm termination in...

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Expression of uncertainty

How would I calculate the expression of Uncertainty when calibrating a temperature chart recorder.

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Uncertainty Calculation for calibration of oscilloscope (BAndwidth function)

Hi There Recently i am involved in the calibration of the oscilloscope.As for the bandwidth calibration , i noticed from the manual the level sine wave is set to show 6 division in the oscilloscope at...

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