Siemens 243-0018 Highest Pressure Signal Selector,
A dual input, single output logic device, the 243 Highest
Pressure Signal Selector, is use in pneumatic control
systems to compare pressure signals.
Applications
The 243 Highest Pressure Signal Selector is use
where two proportional high capacity air signals (2-pipe
thermostat) must compare and the highest of the two
signals transmitted to another logic or final control device.
