Product description
Functions and operating modes
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Hans Turck GmbH & Co. KG | T +49 208 4952-0 | F +49 208 4952-264 | more@turck.com | www.turck.com
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Product description
The capacitive limit level sensors of the NCLS series are contained in a stainless steel housing
with a PEEK sensor tip. The devices are provided with a metal M12 male connector for connect-
ing the sensor cable. An IO-Link interface is provided for setting and operating the devices. The
devices are provided with two outputs that can be set independently of each other. Output 1
can be used as a switching output or in IO-Link mode as required.
4.1
Device overview
mm [Inch]
31.2 [1.23]
47.2 [1.96]
94.8 [3.73]
Ø 21.6 [0.85]
Ø 18 [0.71]
22/7
G1/2
M12 × 1
Fig. 1: Dimensions
4.2
Properties and features
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Media-contacting detection of limit levels in tanks and pipes
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Detection of different substances (liquid, viscous, granular, powder form)
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Hygienic PEEK sensor tip, CIP/SIP-compatible
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Certified by EHEDG
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Highly visible ring LED
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12…32 VDC, < 1 W power consumption
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Two digital outputs, separately adjustable as NO contact or NC contact
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PNP, NPN or push-pull, switchable
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IO-Link for parameterization and process values
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Process connection G1/2” male thread, hygienic (in combination with Turck adapters)
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4-pin connector device, M12 × 1
4.3
Operating principle
Capacitive sensors measure wear-free metallic (electrically conductive) and non-metallic (elec-
trically non-conductive) objects. When in direct contact with the media, the NCLS limit level
sensors are able to detect and differentiate different substances in liquid, viscous, granular or
powder form. Typical application areas are the detection of limit levels (max./min.) and changes
in media in tanks and pipes.
4.4
Functions and operating modes
The NCLS limit level sensor operates on the basis of the capacitive measurement principle.
When immersed, the active surface of the switch detects whether the medium is present or not.
The device is also able to differentiate between different media. The limit level sensor is
equipped with two parametrizable switching outputs. One of the switching outputs can be
used as an IO-Link interface, thus enabling direct access to the process values and parameters
of the device during normal operation. The device can only be parameterized via IO-Link.
