[Rockhounds] Hi Temp Moisture Sensor

[Gary Brown]

Yeh... Any sensor that would do what she wants would be REALLY expensive.
The cool 'n check wouldn't work... It's a continuous process and once you
start, you can't stop.

~~ however ~~ 

Your weighing idea gives me an idea.  When the mold is made a "standard"
block of mold gunk would sit on some sort of weighing sensor.  When ALL the
water was driven out that block would weigh less and it could trip the
sensor.  Of course I'm waving my arms here...but it's an idea.

I've BCC'd my friend on this...  

GcB

> -----Original Message-----
> From: rockhounds-bounces at lists.drizzle.com 
> [mailto:rockhounds-bounces at lists.drizzle.com] On Behalf Of J 
> Bryan Kramer
> Sent: Wednesday, July 09, 2008 7:44 PM
> To: gbrown at catspaw-minerals.com; Rockhounds at drizzle.com: A 
> mailing list for rock and gem collectors
> Subject: Re: [Rockhounds] Hi Temp Moisture Sensor
> 
> OK I have been without WIFI for a couple of days. But at 1000 
> or 2000 degrees you are no longer looking for water you are 
> looking for steam, you might even start getting some 
> disassociation at the higher temp. That would probably need a 
> ir spectrometer type detector which would cost a LOT more 
> than she is interested in paying. The only other approach I 
> can see is to pump some air out, cool it to room temp and run 
> more normal tests on the room temp condensate.
> 
> More practically is to use weights, weigh the mold cold. Heat 
> it for say 15, 30, 45, 60, 75 minutes. Cool it down and 
> reweigh, when you get a constant weight the water is gone. 
> You'd have to use a fresh mold for each test. Then just heat 
> the molds for that time you determined ever after. There is 
> no cheap instrumental method that I know of.
> 
> BK
>