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Rick A
 Post subject: Eugene Bourdon and the Bourdon tube
PostPosted: Mon Nov 18, 2019 3:00 pm 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 487
Location: Potland, Maine
Almost every gauge since 1849 has come with a Bourdon tube inside. It's the metal tube that flexes when put under pressure and causes the needle on the face of the gauge to read the pressure. Here's a copy of his original US patent and some information about him.

https://blog.wika.us/products/pressu...bourdon-gauge/

https://bourdonusa.com/products/pressure-gauges

https://upload.wikimedia.org/wikipedia/ ... ourdon.jpg

http://railroadfan.com/phpbb/download/f ... &mode=view

http://railroadfan.com/phpbb/download/f ... &mode=view

http://railroadfan.com/phpbb/download/f ... &mode=view

http://railroadfan.com/phpbb/download/f ... &mode=view

http://railroadfan.com/phpbb/download/f ... &mode=view

http://railroadfan.com/phpbb/download/f ... &mode=view


Last edited by Rick A on Mon Jan 27, 2020 9:10 pm, edited 1 time in total.

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Rick A
 Post subject: Re: Eugene Bourdon and the Bourdon tube
PostPosted: Tue Nov 19, 2019 11:20 pm 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 487
Location: Potland, Maine
You gotta love his mustache!
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geoff1944
 Post subject: Re: Eugene Bourdon and the Bourdon tube
PostPosted: Thu Nov 21, 2019 1:21 am 

Joined: Tue Jun 02, 2015 10:57 pm
Posts: 36
Bourdon's original gauge was not practical for cold climates because the two ends of the tube, or "spring," were pointed down. Condensed water would drain out of the end which was connected to the steam line but would collect in the other end and freeze, bursting the tube. This design is called a "single spring" gauge because the tube is considered to be one "spring."

T. W. Lane patented an improvement to the Bourdon gauge in 1859 which solved this problem. Lane oriented the tube so both ends were pointed up instead of down. He then placed the connection to the steam line in the middle of the tube, at the bottom. Condensed water would then run out of both ends of the tube. This is called a double spring gauge because the tubes on either side of the bottom connection are each considered to be a separate spring.
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Rick A
 Post subject: Re: Eugene Bourdon and the Bourdon tube
PostPosted: Sat Nov 23, 2019 12:51 am 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 487
Location: Potland, Maine
Thank you for the information. Now this Ashton gauge makes sense to me.


https://www.smokstak.com/forum/attachme ... 1574484591
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softwerkslex
 Post subject: Re: Eugene Bourdon and the Bourdon tube
PostPosted: Sat Nov 23, 2019 8:25 pm 

Joined: Thu Apr 14, 2005 9:34 pm
Posts: 2836
Location: Copenhagen, Denmark
geoff1944 wrote:
Bourdon's original gauge was not practical for cold climates because the two ends of the tube, or "spring," were pointed down. Condensed water would drain out of the end which was connected to the steam line but would collect in the other end and freeze, bursting the tube. This design is called a "single spring" gauge because the tube is considered to be one "spring."

T. W. Lane patented an improvement to the Bourdon gauge in 1859 which solved this problem. Lane oriented the tube so both ends were pointed up instead of down. He then placed the connection to the steam line in the middle of the tube, at the bottom. Condensed water would then run out of both ends of the tube. This is called a double spring gauge because the tubes on either side of the bottom connection are each considered to be a separate spring.


You could just rotate the gauge 90*.

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Rick A
 Post subject: Re: Eugene Bourdon and the Bourdon tube
PostPosted: Sat Nov 23, 2019 9:51 pm 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 487
Location: Potland, Maine
The patent for the 1859 T.W. Lane gauge

http://railroadfan.com/phpbb/download/f ... &mode=view

http://railroadfan.com/phpbb/download/f ... &mode=view

http://railroadfan.com/phpbb/download/f ... &mode=view

http://railroadfan.com/phpbb/download/f ... &mode=view

http://railroadfan.com/phpbb/download/f ... &mode=view

http://railroadfan.com/phpbb/download/f ... &mode=view


Last edited by Rick A on Sat Jan 25, 2020 6:01 pm, edited 1 time in total.

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Rick A
 Post subject: Re: Eugene Bourdon and the Bourdon tube
PostPosted: Sat Nov 23, 2019 10:55 pm 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 487
Location: Potland, Maine
more info about Bourdon.

https://heatinghelp.com/blog/the-metal-manometer/
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Rick A
 Post subject: Re: Eugene Bourdon and the Bourdon tube
PostPosted: Sun Nov 24, 2019 11:42 pm 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 487
Location: Potland, Maine
The dead weight tester is the accepted way to check the accuracy of a guage. Here is an interesting article about the tester.

https://www.instrumentationtoolbox.com/ ... -with.html


http://railroadfan.com/phpbb/download/f ... &mode=view

http://railroadfan.com/phpbb/download/f ... &mode=view

http://railroadfan.com/phpbb/download/f ... &mode=view

http://railroadfan.com/phpbb/download/f ... &mode=view

http://railroadfan.com/phpbb/download/f ... &mode=view


Last edited by Rick A on Sat Jan 25, 2020 6:05 pm, edited 2 times in total.

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Rick A
 Post subject: Re: Eugene Bourdon and the Bourdon tube
PostPosted: Sat Nov 30, 2019 10:17 am 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 487
Location: Potland, Maine
The gauge tester link from the last post.

https://www.instrumentationtoolbox.com/ ... -with.html
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Rick A
 Post subject: Re: Eugene Bourdon and the Bourdon tube
PostPosted: Thu Dec 05, 2019 4:58 pm 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 487
Location: Potland, Maine
An nice comparison of the 2 gauges.

http://railroadfan.com/phpbb/download/f ... &mode=view
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Rick A
 Post subject: Re: Eugene Bourdon and the Bourdon tube
PostPosted: Sat Jan 25, 2020 6:07 pm 

Joined: Tue Aug 27, 2019 9:48 pm
Posts: 487
Location: Potland, Maine
A couple of Bourdon gauges from my collection.




http://railroadfan.com/phpbb/download/f ... &mode=view

http://railroadfan.com/phpbb/download/f ... &mode=view

http://railroadfan.com/phpbb/download/f ... &mode=view
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