I need a cheap pressure sensor capable of going from 0-1000 psi to measure various compressed gases. Most I have found were well over $100 USD. There must be some alternatives out there.
The Bourdon tube mentioned by Johan converts pressure to motion/position but could also be used to convert pressure to force. So you could measure either the position of the Bourdon tube or the force it exerts using some other low-cost sensor. For example you could measure the position with a variable (low friction) capacitor or even an optical sensor, or you could measure the force with a Flexiforce sensor.
The Bourdon tube mentioned by Johan converts pressure to motion/position but could also be used to convert pressure to force. So you could measure either the position of the Bourdon tube or the force it exerts using some other low-cost sensor. For example you could measure the position with a variable (low friction) capacitor or even an optical sensor, or you could measure the force with a Flexiforce sensor.
