Results recording from reference equipment

[PatriciaPius]

Hello

My question is on the test equipment management - the issue here is that we get an eqpt tested externally which we use as a 'reference' eqpt for calibrating the dependant equipment. During the resuts recording we want to use the 'reference' equipment's values for the dependant eqpt. As an example:Calibrating a pressure gage D1 using reference equipment R1, unscrew D1 and install R1 and measure the pressure on the line and say it reads 10.5 psi, then unscrew it install D1 and measure the pressure and if it reads say, 12.25 psi - now my spec says that the tolerance is + or - 1 psi for the D1, and accordingly this test should fail. The requirement is that we should be able enter both 10.5 psi and 12.25 psi during results recording and the system should do the valuation. One option is to specify in the insp plan, under operation pressure test, three characteristics C1 (ref press), C2 (dependent pressure) and C3 a formula MIC to calculate C1 minus C2 and then do the valuation. But, this is long drawn procedure considering that we have mutiple points to test and could be laborious.

My question is if there is any other easier alternate method or what is the method followed by those who use calibration process? Any suggestions? Pl. help.

thanks

Patricia P

[PatriciaPius]

Can somebody please provide some help?

Patricia

[Craig]

I think you got no replies because no one has a better solution for you than what you have!

It is possible to use data from the Info field in a calculation Actually I believe I used an input processing formula? I'm having trouble rememebr this now. I think there should be a posting in this forum about it actually. It was in reference to using titration standards in a test to calculate a value. This is very similer to what you want to do.

So you could maintain the reference equipment value directly in the MIC infofield 1 which in a "locked" characteristic should always show the value in the characteristic. You can the input the read value of C1 and the calculated characteristic can do the calculation for you.

You update the appropriate MIC's when R1 comes back from outside calibration