Steady State Value ______(Inches Or Cm)

Steady State Value ______(inches or cm)

Self Review 11-3

1. Ultrasonic level sensors provide an electrical output signal that is ______to the level.

2. When using an ultrasonic level sensor in a closed-loop system, the controller ______must match the configuration used, either inverted or non-inverted.

3. ______(P/PI/PD/PID) control is used in level control systems because it provides an immediate response and eliminates offset.

4. ______control can be added to a control method to speed up the response of the system.

5. If the ultrasonic sensor is wired for inverted measurement, the ______sensor output occurs when the level is at a maximum.

6. If the ultrasonic sensor is wired for non-inverted measurement and an air-to-close valve is used, the controller should be set as ______acting.