Self-balancing mechanisms consisting solely of a baffle/nozzle detector coupled to a feedback bellows, while functional, are not always practical as field instruments. Nozzles and orifices must be made rather small
Most pneumatic instruments use a simple but highly sensitive mechanism for converting mechanical motion into variable air pressure: the baffle-and-nozzle assembly (sometimes referred to as a flapper and- nozzle assembly).
In Olden days, before the usage of 4-20mA transmitters in industries, we were using pneumatic transmitters for our process measurement applications. Briefly, in pneumatic transmitter, the compressed instrument air supply
Whether you own a car,house ,building or professionally involved in operation and maintenance of machines, you need to know some basics about maintenance. Some form of maintenance you are practicing already but you always need