What the Min and Max mtr/sec of airflow that you want to display.? and what are the v
I have used 2 ptr1000 and have made 2 anemometers n a simple bridge arrangement, and one s used as sensor and the other as a reference, the output from these two is given to a diff amplifier, so as of now the diff amp output at no airflow = 0.01v and depending on air flow it goes up to 2.5v,
o/p of 1st anemometer is 3.95v at no air flow and decreases when air s blown over it
o/p of 2nd anemometer is 3.94v at no air flow and stays at that temp
I still am not able to caliberate it as i wasnt able to get some Air of a known velocity, however i am planning to set the ref of diff amp as 0.5v so that an air blown over will increase the voltage of the diff amp from 0,5v upwards.. i cant caliberate it for 2/3 weeks so i am going ahead with the ADC/LCD display on AVR and then will get everything together.............
Plz do help me as to how to get about further as i am new to AVR
Thanks