Barometric altitude computation
Posted: Sat 11 Dec 11 2010 12:15 am
A place to blog my projects and research
http://forum.tsebi.com/
Code: Select all
# 0ft 0m 101300Pa 14.6900psi
# 38661ft 11784m 20000Pa 2.9000psi
# 104987ft 32000m 868Pa 0.1259psi
# 155348ft 47350m 111Pa 0.0161psi
# 168678ft 51413m 67Pa 0.0097psi
http://search.digikey.com/scripts/DkSea ... -1100-1-NDJonathan Fulford wrote: Sure. I used the Intersema MS5534C. I bought it from the DigiKey web site. It's the only sensor that I could find that would provide pressure data all the way from ground level to 100K feet. It did work very well and I'm quite pleased with it. I will tell you that it is a very difficult sensor to integrate. It is a surface mount part and it's a non-standard digital data interface. It has a 3 wire communications interface AND it needs and external 32KHz clock. I had to write a custom interface driver to get data from it. It was not fun to integrate but the data it yields is superb.
Code: Select all
Pressure Type Absolute
Operating Pressure 0.15 ~ 16 PSI, 10 ~ 1100 mbar
Port Size -
Output Digital
Accuracy -
Voltage - Supply 2.2 V ~ 3.6 V
Termination Style PCB
Operating Temperature -40°C ~ 125°C
Package / Case 9 x 9mm Module