The AT-SONDE level electrode is an accessory that connects to a DSN motor protection box, level control relay such as AT-DR07 or AT-DR50 using a single-core cable = 1 x 1.5 mm², to detect water absence or presence. Indeed, upon contact with the liquid, the AT-SONDE level electrode allows current to flow to the relay. All with very fast response times.
Cylindrical in shape and compact in size, the AT-SONDE level electrode allows water level monitoring in narrow spaces such as wells or boreholes.
The electrodes can be used for level detection with one electrode or with three electrodes, for level control in drainage or filling installations.
The installation height corresponds to the water level to be controlled.
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Detection or controlA water detection electrode is a conductivity sensor. It operates on the following principle: Water is slightly conductive, especially if it contains mineral salts. The electrode is immersed in the liquid and connected to an electronic module (relay or controller). When water touches the electrode, a small current flows between the electrode and ground or between several electrodes. The electronic module interprets this current as water presence and activates an output (relay contact). The AT-SONDE electrode can be used in two operating modes: Level detection or level control.
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This control mode maintains the water level between two thresholds: a low level and a high level. Two electrodes are placed at different heights to control the water level. A third electrode, called reference electrode (ground), is installed at the lowest level.
The control relay, according to its predefined wiring (NC - Normally Closed or NO - Normally Open), directly controls the pump or solenoid valve.
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Level control relay for conductive liquids
Level control relay for conductive liquids.
To best define the float level switch suited to your needs, ATMI offers a wide range of level switches for liquids and solids in various applications.
