Use this low cost flow/no-flow switch for liquids or solids.
The acoustic Sensor mounts on the outside of any pipe and listens for flow
noise (like a microphone). Recommended for liquids, pneumatically conveyed
or gravity flow solids. Adjust the Switch's sensitivity for flow/no-flow
control. Remote mounted electronics amplify the flow noise signal and
activate the control relay at the adjustable flow noise level.
The Greyline MFS100 face panel includes power and relay
indicator LED's. The Sensor includes armored, flexible cable for
connection to the electronics enclosure.