Recommendation for Analog Pressure Sensor

[marccenter]

Dear CD,

Can anyone recommend an inexpensive, pneumatic pressure sensor that they have used with the cRIO system? Years ago FIRST used a TI sensor but I cannot find that part number online.

Thanks in advance,

[Mark McLeod]

I don't know how inexpensive ($87) this is, but here's what we used last year.
Search Digikey for : 734-1003-ND

http://www.team358.org/files/pneumatic/SSI_PressureTransducer.jpg

Rated for 200psi (125psi required)
Analog output (0.5 V ~ 4.5 V)

[feverittm]

Please see my earlier posting regarding the legality of using a pressure transducer on the high pressure side of the pneumatics system. I asked and received a Q&A that this is illegal.

If you are using it on the low pressure side (like to modify the output pressure for a shooter), then it should be fine.

Enjoy!

[TheOtherGuy]

Keep in mind I haven't tested this, but here's a $10 sensor from digikey:
http://www.digikey.com/scripts/DkSearch/dksus.dll?WT.z_header=search_go&lang=en&keywords=MPX5500DP-ND&x=8&y=6&cur=USD

I imagine you could simply attach a hose onto the barb and secure it in place, but I'm not acquainted with the tubing ID.

[Mark McLeod]

Keep in mind I haven't tested this, but here's a $10 sensor from digikey:
http://www.digikey.com/scripts/DkSearch/dksus.dll?WT.z_header=search_go&lang=en&keywords=MPX5500DP-ND&x=8&y=6&cur=USD

I imagine you could simply attach a hose onto the barb and secure it in place, but I'm not acquainted with the tubing ID.

That's only rated for 72.5 psi


R76

All pneumatic components must be COTS pneumatic devices rated by their manufacturers for working pressure of at least 125psi (with the exception of R78-D (http://frc-manual.usfirst.org/viewItem/347)).

[TheOtherGuy]

That's only rated for 72.5 psi

Right, this would be for measuring pressure downstream of the 60psi regulator. There's a 150psi equivalent (MPX5999D), but I don't believe it comes with the useful plastic molding.

EDIT: didn't see that rule, thanks for pointing it out! The search continues...

[Mark McLeod]

Right, this would be for measuring pressure downstream of the 60psi regulator. There's a 150psi equivalent (MPX5999D), but I don't believe it comes with the useful plastic molding.

Doesn't matter where you put it. It's not legal unless it's rated for 125psi.

[TheOtherGuy]

In that case, here's a similar one by Honeywell: http://www.digikey.com/product-detail/en/NBPDANN150PAUNV/480-5552-ND/3475911

[marccenter]

Thanks everyone,

I just purchased the Honeywell analog pressure sensor (NBPDANN150PAUNV- PN 480-5552-ND) from Digikey for $12.32/pc (2 units). After I hook them up I will let everyone know how they worked out (planning on displaying pressure on the dashboard).