Level Monitoring Relays

Level monitoring relays are used to monitor fill levels as well as mixing ratios. The relay monitors both a minimum and maximum value, allowing it to control pumps to protect against tank overflow and dry operation.

Schneider Electric Harmony Control Relays monitor and detect abnormal operating conditions concerning current, phase, voltage, frequency, liquid level, temperature, speed and pump control. This information allows users to initiate the necessary corrective actions before serious breakdowns occur. Settings can be configured digitally using the Zelio NFC App. Monitoring parameters can be set precisely to the desired value and time delay can be set to minutes, seconds or milliseconds. Harmony Control Relays are suitable for a wide range of applications including: packaging, lifts, textile, pumping, and water.

Phoenix Contact EMD Monitoring Relays are available for a wide range of monitoring tasks to keep them within limits or to avoid the consequences of errors. The operating states are indicated using colored LEDs. Errors that may occur can be sent to a control system via a floating contact or can shut down a part of the system. Some devices are equipped with startup and response delays in order to briefly tolerate measure values outside the set monitoring range.

Sort By:
$108.23
liquid level control relay RM84 - plug-in - 11 pins - 120 V AC
$108.23
liquid level control relay RM84 - plug-in - 11 pins - 24 V AC
$189.80
Modular liquid level control relay, 5 A, 1 CO, 24...240 V AC/DC
$149.50
Modular liquid level control relay, 5 A, 2 CO, 24...240 V AC/DC
$310.09
Monitoring relay for level monitoring of conductive fluids, minimum monitoring, maximum monitoring, 230 VAC supply voltage, 2 PDTs
$250.17
Monitoring relay for level monitoring of conductive fluids, minimum monitoring, maximum monitoring, 110 VAC supply voltage, 2 PDTs