Measurement channel switches
Usual pressures in fluids - Sensors and Transmitters (Part 2)

These mechanical switches are no longer on the market, having been superseded by electronic multisensor systems. They are nonetheless original in their use of a single time-sharing sensor. Channel switching is performed by a motor-driven rotary distributor (figure 19 ). Precise positioning of the distributor, i.e. channel identification, is achieved by an encoder coupled to the drive shaft. When sharing a differential pressure sensor, two synchronous channel...