ASME B89.6.2 - Temperature and Humidity Environment for Dimensional Measurements

[BOBSKY]

Our objective in the near future is to be compliant to the latest requirements, I have heard 50% humidity is spec. for ambient temp of 65 to 75 degrees does anyone know where this is written? our lab is 21 c and usually around 23% humidity, how many dollars required to bump to 50% if required? and contacts in Ontario Canada.

THANKS BOBSKY.

 

[TorqueGuy]

I have found some ISO specs for test and calibration that state required temperature but not humidity. I think it depends on the type of M&T's being performed. What are you calibrating?

 

[David Drue Stauffer]

Hi,
If you would acquire ASME B89.6.2 entitled " Temperature and Humidity Environment for Dimensional Measurement", I think this will answer your questions.
Dave.

 

[Yew Seng Chuan]

Hi
I am Yew, we also facing the same problem.
Our auditor asking us how our company setup the temperature and humidity for inhouse calibration laboratory.
Our temperature setting are 23 +/- 2°C
Humidity setting : 55 +/-10% RH.
Do any one have any reference regarding laboratory temp and humidity specification to be share.
I also found under NCSL laoboratory design them only mention about temperature control for laboratory. 23°c for electrical laboratory.

Regards,
Yew Seng Chuan.

 

[harry]

You may want to refer to this guide from UKAS. Temp: 20+/-2 and RH not exceeding 55%

 

[Yew Seng Chuan]

Harry
Noted and thank for advice.
Do any one have reference such as below.
1.ASME B89.6.2 or
2.NCSL Recommended Practice RP-7: Laboratory Design
I need them be my reference to determine my inhouse calibration laboratory temperature and humidity setting.
I try to seach through internet the reference above, but unable to get.

Thank.

Regards,

 

[harry]

Welcome to the forum.

The ASME standard should be copyrighted and hence you can't find any in the web but I am not too sure about RP-7.

We do have 2 other threads where you should be able to gather bits and pieces of info:

Calibration Environment - Micrometers - NCSL RP 7 - Laboratory Design

Environmental Conditions for Calibration - Temperature and Humidity‎

An a2la link is provided in one of the post. Use it to see if you can access RP-7, otherwise they are available from sellers like SAI.