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Thread: Seemingly wrong PT relationship
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28-06-2012, 01:59 PM #1
Seemingly wrong PT relationship
Hi.
I have this 28 oz can of r410a at room temperature of 77F.
When I connect a gauge to it, I measure 258 psig.
The r410a PT chart says I should have 226 psig at 77F.
What am I missing?
Thanks.