Dear Friends
I want to design a circuit to detect a gas (as compressed air) pressure and makes alarm in the event of pressure drop.
- the pressure may be between 2,5 to 5 bar
- I want to use LM324N as comprator
thanks for help
Dear Friends
I want to design a circuit to detect a gas (as compressed air) pressure and makes alarm in the event of pressure drop.
- the pressure may be between 2,5 to 5 bar
- I want to use LM324N as comprator
thanks for help
Well first you need to come up with a pressure sensor before worrying about the electronic interface.
In process control industry there are two kinds of pressure sensors, 'transmitters' that send a analog value of the pressure within the sensors design pressure, say 0-5 bars range. The second is a pressure switch that is usually a sensing diaphragm coupled to a switch that changes state when the pressure is below or above the adjustable range of the switch.
So once you decide on the sensor to use then get back for interfacing requirements.