In a message dated 29/07/2010 1:43:19 P.M. Eastern Daylight Time,
LISTSERV@GERRY.VANAGON.COM writes:

        I have already tried this  some years ago.  If you all "remember"
but of course none do as is  "normal"  I had offered these as a solution and
was selling them and  installing them here in my shop.  BUT, after some
personal use it was  discovered to be VERY inaccurate.  The problem is this >
Propane  in the tank is LIQUID and the pressure of that liquid CHANGES with
the  temperature !  So as the temperature of the tank goes up so does the
pressure and vice versa !  So how are you to incur any accuracy from that
SMALL detail ?  It will also show high pressure right up until the  tank is
completely EMPTY  due to what ever propane is left in the tank  getting hot and
expanding and causing a high pressure reading on the gauge  !   The ONLY
way to measure propane in a tank is with a mechanical  float level gauge.
Manchester tank has these BUT, (I know another BUT),  you will need to cut a
hole in your tank and WELD in the bung that accepts the  level gauge.  Know
any welders in your area willing to do this ?  Good  luck, BTW, I do have such
a welder in my back yard !

>>>Re: Would this in any way be useful on or adaptable to  a westy
propane  tank?<<<<<

Cheers,

Frank  Condelli
Almonte, Ontario, Canada
'87 Westy & Lionel Trains (_Collection for sale_
(http://frankcondelli.com/trainsal.htm) )
_Frank Condelli &  Associates_ (http://frankcondelli.com/busindex.html)  -
Vanagon/Vanagon Westfalia Service in the Ottawa Valley
_Vanagon Stainless Steel Exhaust  Systems_
(http://frankcondelli.com/exhaust.htm)
_BusFusion_ (http://www.busfusion.com/)  a VW Camper  camping event,
Almonte, ON, June 10 ~ 13,  2010