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Is it possible no calibration on pressure gauge


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carine

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Posted 14 November 2014 - 08:54 AM

Our calibration cost per pressure gauge is 60 bucks and 1 unit of pressure gauge about 40 bucks..as such our team member suggested get the pressure gauge change every year instead of send for calibration, save cost.. What do you all think? need you all input.. Thanks in advance. 



feoncsy

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Posted 14 November 2014 - 08:59 AM

good idea.... i will rather buy a new pressure gauge instead if it can save the cost... :happydance:



jel

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Posted 14 November 2014 - 01:36 PM

Our calibration cost per pressure gauge is 60 bucks and 1 unit of pressure gauge about 40 bucks..as such our team member suggested get the pressure gauge change every year instead of send for calibration, save cost.. What do you all think? need you all input.. Thanks in advance. 

only considers the gauge to buy has its calibration certificate



Mr. Incognito

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Posted 14 November 2014 - 01:48 PM

Yeah I'm not sure how that is going to pan out.  If the Calibration is only good for one year how long after it's calibrated will you get it if it even comes with a certificate of calibration?  If it gets to you 3 months after calibration you'll only be able to use it for 9 months...


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RG3

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Posted 14 November 2014 - 04:12 PM

I find myself in the same situation with NIST thermometers and backflow preventers. It more cost efficient to replace with new ones than it is to recalibrate.



jel

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Posted 14 November 2014 - 04:14 PM

Yeah I'm not sure how that is going to pan out.  If the Calibration is only good for one year how long after it's calibrated will you get it if it even comes with a certificate of calibration?  If it gets to you 3 months after calibration you'll only be able to use it for 9 months...

if the gauge is not in use, it shall be protected from conditions that invalidate the calibration status, that way, no matter when it was calibrated, but from the date when it was used.
 
But most important to establish the frequency of calibration, where it will be placed, and to measure: ie, what information you will provide. If your meter is at a CPP where it is subject to conditions affecting the calibration status, perhaps you should calibrate it more than once a year, but if the place is stable, annual calibration may be advisable.
 
However, the best in these cases is to do a risk analysis, which will generate information on the effect on the quality / safety of your product, if the equipment was not calibrated


fgjuadi

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Posted 14 November 2014 - 04:46 PM

We purchase new temperature guns every year instead of having them calibrated for this reason - new ones are less expensive than calibration itself.


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carine

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Posted 19 November 2014 - 03:09 AM

 Is new equipment can be exempted from calibrate although no certificate provided by suppler? Accepted by auditor?   



Charles.C

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Posted 19 November 2014 - 04:47 AM

 Is new equipment can be exempted from calibrate although no certificate provided by suppler? Accepted by auditor?   

 

Dear carine,

 

So how do you justify the reliability of any of your data output if the unit is of unknown calibration ?

 

Of course, if the accuracy/precision of the data is (justifiably) irrelevant to yr process validity/safety, then  the auditor should be equally uninterested.

 

The specifically auditorial problem arises from the necessity of evidence, eg documentation rather than hearsay or trust.

 

So yr question is perhaps effectively one of Supplier Approval ? :smile:

 

Rgds / Charles.C


Kind Regards,

 

Charles.C





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