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  Measurement, Test and Calibration
  Calibration room

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Author Topic:   Calibration room
Tavares
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posted 11 April 2001 05:58 AM           Edit/Delete Message   Reply w/Quote
Hello All

I want to known if is possibel what kind of environmental conditions must have a calibration room.

Thanks

Tavares

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Al Dyer
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Posts: 622
From:Lapeer, MI USA
Registered: Oct 2000

posted 11 April 2001 07:58 AM     Click Here to See the Profile for Al Dyer   Click Here to Email Al Dyer     Edit/Delete Message   Reply w/Quote
It depends on what you are calibrating. For simple items I would start with temp. and humidity.

I'm sure other will have some other types.

ASD...

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Tavares
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posted 11 April 2001 11:08 AM           Edit/Delete Message   Reply w/Quote
The calibration room is to calibrate electrical equipment

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Al Dyer
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From:Lapeer, MI USA
Registered: Oct 2000

posted 11 April 2001 01:44 PM     Click Here to See the Profile for Al Dyer   Click Here to Email Al Dyer     Edit/Delete Message   Reply w/Quote
I sure can't help here, I have trouble screwing in a light bulb!

ASD...

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Jerry Eldred
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posted 11 April 2001 02:38 PM     Click Here to See the Profile for Jerry Eldred   Click Here to Email Jerry Eldred     Edit/Delete Message   Reply w/Quote
You need to review the specifications of the items you calibrate, and assure your calibration laboratory (room) area is environmentally controlled to the spec for the unit(s) with the tightest environmental requirement. If you are doing relatively low accuracy electrical calibrations, the requirements may not be that tight. Some examples of tighter specs I have seen are as narrow as 23 Deg C +/- 1 Deg C with no greater than 1 Deg change per hour and %RH 45% RH +/- 5% RH. That is for a higher accuracy environment. I have also seen as loose as 23 Deg C +/-5 Deg C and %RH Greater than 30 %RH and less than 60 %RH. For low accuracy electrical calibrations, your environmental requirements are likely to be closer to the second set of requirements. But you MUST review the specs of the units you actually use. Whatever the manufacturer specifies for those units is the limits you must maintain. There may be units where the manufacturer does not specify environmental limits. Electrical power plant switchboard meters, for example are designed for a very wide range of environmental conditions. The calibrator you use, however, may have much tighter limits. Review all of the items, and spec to meet the tightest one.

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DICKIE
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Posts: 46
From:Romulus, MI, USA
Registered: Feb 2001

posted 11 April 2001 04:28 PM     Click Here to See the Profile for DICKIE   Click Here to Email DICKIE     Edit/Delete Message   Reply w/Quote
You might get some help by looking at NCSL recommended practice 14 "Guide to selecting Laboratory environments"

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