Multifunction Process Control Teaching System.
Multifunction Process Control Teaching System
Includes the following process control demonstrations:
Process principles • Calibration of sensors (via PC software) • Inflow control • Outflow control • Direct heating • Indirect heating • Batch and continuous operation • Effect of sensor lag (e.g. thermometer pocket) • Effect of system time constant (e.g. volume change) • Effect of dead time (e.g. holding tube) • Effect of mixing/stirring
Measured variables • Level – on/off switch (fixed hysteresis) • Level – differential on/off switch (adjustable hysteresis) • Level – proportional pressure sensor (slow system response) • Flow – Proportional turbine sensor • Temperature – on/off switch (fixed hysteresis) • Temperature – proportional thermocouple sensors • Static pressure – proportional sensor (fast system response) • Differential pressure – proportional pressure (fast system response) • pH – proportional sensor.