Re: [Vo]:HP474AC probe measures Relative Humidity, not steam quality

[Harry Veeder]

----- Original Message ----
> From: Stephen A. Lawrence <sa...@pobox.com>
> To: vortex-l@eskimo.com
> Sent: Sun, January 23, 2011 9:58:57 PM
> Subject: Re: [Vo]:HP474AC probe measures Relative Humidity, not steam quality
> 
> 
> 
> On 01/23/2011 09:49 PM, Harry Veeder wrote:
> > Stephen A. Lawrence  wrote:
> >
> >  
> >> If it's pure steam (no entrained air)  at 100 C, then  the RH must be
> >> 100%, a priori, since the vapor  pressure of water at 100 C is  1
> >> atmosphere.  
> >>    
> > I think it is mixed with air, otherwise the  water pump would have to work 
>harder 
>
> > and harder as a vacuum is created  in the water supply tank.
> >  
> 
> No, I don't think so.  The  stuff pumped out of the supply tank, and into
> the reactor, is 100% water; air  comes into the supply tank at the top
> and displaces the water in the tank as  it's pumped out.

Well you seem confident so I'll take your word for it.

Harry