Charles Law would maybe play in. LOL
longer times, more chatter
I live at 639ft per railroad benchmark behind my mailbox. I’m not much help.
I'd be curious how they regulate the old ones for diff temps. I'll have to look that up. It'd be interesting to read.
On the other hand, they might only offer one seting, the way you do it, 2-4 p/min for one temp/pressure, and there is "no other" temp setting they offer, because to do so would kill the stupid people who didn't get it right.