If the diaphragm box is changed into a diaphragm, bellows or spring tube, it becomes a pneumatic differential pressure transmitter of various types. When this torque is equal to the size of the torque generated by the measurement signal, the main lever stops rotating, at which point the distance between the nozzle and the baffle stops changing and the amplifier steadily outputs a signal pressure. When the measured differential pressure increases, the transmitter and quickly repeat the above action, re-stabilised in a new equilibrium position, the output and the measured differential pressure proportional to the pressure signal, and then sent to the display instrument, such as pneumatic bar indicator, pneumatic one needle, two needle, three needle recorder record display.
DEAR air separation plants of small air separation units, large air separation units and liquid air separation plants stable output signal pressure to ensure the smooth operation of air separation units.
