How do I measure barometric pressure
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Posts: 46,084
Motorola MPX4115AS
http://www.phanderson.com/ordering.html
About 1/2 way down the page. $20.00
Tim
[noparse][[/noparse]Denver, CO]
> What can I use and where could I buy it to measure barometric pressure?
http://www.phanderson.com/ordering.html
About 1/2 way down the page. $20.00
Tim
[noparse][[/noparse]Denver, CO]
> What can I use and where could I buy it to measure barometric pressure?
Comments
You'll want one that has a range of 0 to 15 PSIA - pounds per square inch
absolute. Or you could get a differential (two-port) pressure transducer
with a 0 to 15 PSID range and seal off one port.
There are lots of manufacturers of these little guys. Motorola comes to
mind immediately, but just do a search on the web and you'll find a whole
herd of 'em.
What's the application?
Good luck.
Arlen
Original Message
From: "Peter May" <manager@s...>
To: <basicstamps@yahoogroups.com>
Sent: Monday, January 29, 2001 1:22 PM
Subject: [noparse][[/noparse]basicstamps] How do I measure barometric pressure
> What can I use and where could I buy it to measure barometric pressure?
>
>
>
>
right on the barometer chip. Outputs ~0 to 5V over a ~4 to ~34 inHg
range... http://www.mot-sps.com.
Matt Parnell
Parnell Engineering, LLC http://www.weatherstamp.com
37637 Five Mile Rd., #198 mail@w...
Livonia, MI 48154-2634 Phone: (734) 464-0150
Fax: (734) 432-9866 ICQ: 14074347
Pager: (517) 251-7674
Original Message
From: arlen fletcher [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=JzNA7RBa6rqYP65xNF7dTEcJ0PYqoXc-olJfLw3wIYQsUuz5hQPOHGBQQBM9BDr61KETER5hqM8TDwT5nbCY38WW2sVjJw]arlen.fletcher@w...[/url
Sent: Sunday, January 28, 2001 10:36 PM
To: basicstamps@yahoogroups.com
Subject: Re: [noparse][[/noparse]basicstamps] How do I measure barometric pressure
How about a pressure transducer? ;-)
You'll want one that has a range of 0 to 15 PSIA - pounds per square inch
absolute. Or you could get a differential (two-port) pressure transducer
with a 0 to 15 PSID range and seal off one port.
There are lots of manufacturers of these little guys. Motorola comes to
mind immediately, but just do a search on the web and you'll find a whole
herd of 'em.
What's the application?
Good luck.
Arlen
Original Message
From: "Peter May" <manager@s...>
To: <basicstamps@yahoogroups.com>
Sent: Monday, January 29, 2001 1:22 PM
Subject: [noparse][[/noparse]basicstamps] How do I measure barometric pressure
> What can I use and where could I buy it to measure barometric pressure?
>
>
>
>
pressure uses only small percantage (about 6%) or betwen 14 and 15
PSI, then the accuracy 1% of 15 PSI is about 0.15 psi? readings
would be +/- 0.15psi?
Temperatrure will also have an effect on mechanical devices and will
also induce an error?
I know that if you cap off one side of a differential pressure
device, you will almost certanly cause an increse in pressure by the
tightiening of the cap. Epoxy or some hard sealant would not have
the same effect.
Regardless, calibration will be necessary.
--- In basicstamps@y..., "Matt Parnell" <tparnell@o...> wrote:
> Check out the MPX4115A, it is signal conditioned and temperature
compensated
> right on the barometer chip. Outputs ~0 to 5V over a ~4 to ~34 inHg
> range... http://www.mot-sps.com.
>
> Matt Parnell
> Parnell Engineering, LLC http://www.weatherstamp.com
> 37637 Five Mile Rd., #198 mail@w...
> Livonia, MI 48154-2634 Phone: (734) 464-0150
> Fax: (734) 432-9866 ICQ: 14074347
> Pager: (517) 251-7674
>
>
Original Message
> From: arlen fletcher [noparse][[/noparse]mailto:arlen.fletcher@w...]
> Sent: Sunday, January 28, 2001 10:36 PM
> To: basicstamps@y...
> Subject: Re: [noparse][[/noparse]basicstamps] How do I measure barometric pressure
>
>
> How about a pressure transducer? ;-)
>
> You'll want one that has a range of 0 to 15 PSIA - pounds per
square inch
> absolute. Or you could get a differential (two-port) pressure
transducer
> with a 0 to 15 PSID range and seal off one port.
>
> There are lots of manufacturers of these little guys. Motorola
comes to
> mind immediately, but just do a search on the web and you'll find a
whole
> herd of 'em.
>
> What's the application?
>
> Good luck.
>
> Arlen
>
Original Message
> From: "Peter May" <manager@s...>
> To: <basicstamps@y...>
> Sent: Monday, January 29, 2001 1:22 PM
> Subject: [noparse][[/noparse]basicstamps] How do I measure barometric pressure
>
>
> > What can I use and where could I buy it to measure barometric
pressure?
> >
> >
> >
> >