TURCK level controls offered by Kühn Controls

Level controls

Level controls are designed for those applications where the levels of conductive liquids have to be monitored.
Typical applications are, for example, monitoring of liquid levels in bottling lines.
Additionally, these devices securely distinguish between foam and liquid.

Monitoring and control of liquid levels
Level controls based on the conductive measurement principle (conductivity measurement) are suited to measure all liquids with a certain water content.
The medium resistance between two electrodes, which are immersed in the liquid, is measured.
A secure distinction is possible, because the conductivity of foam is lower than that of of liquids.
In order to avoid deposit build-up, the sensing probes feature an AC voltage.
The conductivity of liquids depends largely on the concentration and composition of the liquid and can vary considerably.
The medium resistance between the two immersion probes also depends on the wetting surface and the distance between the two electrodes.
TURCK level controls can thus be adjusted over a large operating range.
A switching delay is implemented for irregular liquid levels.

Application example
TURCK level controls are designed for run-dry and overflow protection.
The monitoring task is accomplished with two insertion electrodes or one electrode and bonding to the conductive wall of the container.
In a two-step control application, the level control can also be used to drive pumps and valves.
In order to solve a two-step control application, the devices are equipped with a reed relay to switch the active probe automatically.
In a two-step control set-up, three electrodes and bonding to the conductive wall of the container is required.

Insertion electrodes
Any metal object can be used as an insertion probe.
Depending on the type of liquid, it may be necessary to check its chemical resistance.
Isolating deposits on the electrodes may impair their function.
TURCK recommends the insertion electrode EL 1/1 for all TURCK devices.

Description	Type	Ident n°
Level Control 1-channel	MK91-121-R/24VDC	7545087
Level Control 1-channel	MK91-12-R/115VAC	7545072
Level Control 1-channel	MK91-12-R/230VAC	7545070
Level Control 1-channel	MK91-12-R/24VDC	7545077
Level Control 1-channel	MK91-R11/24VDC	7525202
Level Control 1-channel	MS91-12-R	5220110

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Kühn Controls AG, Sales office Germany, Gräfenhäuser Str. 14, 75305 Neuenbürg, Germany, Tel.: +49 7082 94 00 00, Fax: +49 7082 94 00 01, Contact Imprint, legal notice.

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Level controls

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