Hi !
Have somebody some informations (diagram / code or any other) about air pressure measuring used sensor (any ) & PIC & PicBasicPro ? But , for humidity ?
Thank you very much !
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Hi !
Have somebody some informations (diagram / code or any other) about air pressure measuring used sensor (any ) & PIC & PicBasicPro ? But , for humidity ?
Thank you very much !
Do you mean air pressure as in barometric or as in a compressor?
This should do the trick
http://www.omega.com/pptst/HX85.html
I have not used this particular model, that is why I asked if it was barometric.
Any how. The way I use other parts from this company is to set up a voltage divider to scale to 0 - 10 VDC down to 0 - 5 VDC. Then use a chip with an ADC port. At least 3 pins will be needed.
I use a Silicon Microstructures sensor to measure very small amounts of pressure ( tenths of inches of water) . One of their products may be suitable for your use.
http://www.si-micro.com/
Hello Eugeniu,
Got any automobile junk yards in Romania? Many cars built since the 1980s used a Baro sensor, some used a MAP sensor and others used a combo MAP/Baro sensor. A little research and some bone-yard shopping could result in what you want on the cheap, and then after you have proven your design, if you want a new sensor, you can get it at an auto parts distributor.
Not enough information!
What air pressure do you wish to measure?
I used the amplified analog out version and fed it into the A/D converter. With averaging, I get accurate .2" - 1.0" H20 readings.
My apologies to all; my reply was entered when there was only the original post present. I don't know why it took so long to appear!
Please disregard what otherwise seems to be a fairly silly belated question.