As a watermaker membrane ages and fouls it produces less fresh water but
the salts don't increase. The TDS sensor would divert the product water
if it did get over 200 ppm or so but that is not likely to happen. The
main reason for testing and discarding the first water out is that it
will be salty.

Remember that the process is "REVERSE" osmosis. The high pressure
reverses the natural tendency for salty water to migrate through a
membrane to less salty water. With no pressure the natural process
resumes and salt passes through and accumulates on the fresh water side.

Fred Williams wrote:
Don't really know how your waatermaker works but what happens if the output
goes "sour" after you have sampled and redirected it? I would guess the
"automated" monitor you mentioned is most likely "real time" and should
catch a failure at any time during a watermaker run.

--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

Leaving the below in for context, are you going to put your configuration on
your website? I'm sure others might like to attempt your achievements at
bargain hunting and efficacy...

L8R

Skip
"Glenn Ashmore" wrote in message
...
As a watermaker membrane ages and fouls it produces less fresh water but
the salts don't increase. The TDS sensor would divert the product water
if it did get over 200 ppm or so but that is not likely to happen. The
main reason for testing and discarding the first water out is that it
will be salty.

Remember that the process is "REVERSE" osmosis. The high pressure
reverses the natural tendency for salty water to migrate through a
membrane to less salty water. With no pressure the natural process
resumes and salt passes through and accumulates on the fresh water side.

Fred Williams wrote:
Don't really know how your waatermaker works but what happens if the
output
goes "sour" after you have sampled and redirected it? I would guess the
"automated" monitor you mentioned is most likely "real time" and should
catch a failure at any time during a watermaker run.

--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

Yes. The pressure vessels just arrived and I will have the installation
complete enough to finish the picture series for the web oage. I have
converted the schematics and printed circuits to GIFs and have been
working on the narative.

Hopefully I can get some stuff up on the server next week and reduce the
volume of emails from impatient site visitors. :-)

Skip Gundlach wrote:
Leaving the below in for context, are you going to put your configuration on
your website? I'm sure others might like to attempt your achievements at
bargain hunting and efficacy...

L8R

Skip
"Glenn Ashmore" wrote in message
...

As a watermaker membrane ages and fouls it produces less fresh water but
the salts don't increase. The TDS sensor would divert the product water
if it did get over 200 ppm or so but that is not likely to happen. The
main reason for testing and discarding the first water out is that it
will be salty.

Remember that the process is "REVERSE" osmosis. The high pressure
reverses the natural tendency for salty water to migrate through a
membrane to less salty water. With no pressure the natural process
resumes and salt passes through and accumulates on the fresh water side.

Fred Williams wrote:

Don't really know how your waatermaker works but what happens if the

output

goes "sour" after you have sampled and redirected it? I would guess the
"automated" monitor you mentioned is most likely "real time" and should
catch a failure at any time during a watermaker run.

--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com






--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com