Plugged Chute Detectors reliably detect the presence or absence of material flowing through chutes, hoppers or pipes, enabling equipment to be shut-down before the build-up can cause damage. If a process material becomes clogged and stops flowing, the Sensor provides an audible alarm when attached to a horn, siren, light or alarm panel. Plugged Chute Detectors can be pressure/diaphragm switch or tilt switch type.