The Contrinex TRU-C23 photoelectric sensor is ideally suited for the presence control of transparent objects. Its patented technology uses UV light. Since transparent materials like plastic or glass absorb large amounts of polarized UV light, it is very easy to set the threshold at which the sensor switches. This makes commissioning much easier. The shape or thickness of the target has no influence on detection. In addition, sensor performance is unaffected by dirt, water drops or aging. Multiple switching for the same object is eliminated.

The sensor system comprises an LED that emits polarized UV light and a reflector made of special materials suitable for UV. Overall, the sensor’s operating range is around 1200 mm. Special optics with autocollimation ensure reliable detection and no blind zone, even close to the sensor or through a small notch.

For applications requiring the detection of thicker or larger transparent objects, the C23 Transparent Standard can be the ideal solution. It operates with polarized, red light and has a maximum operating range up to 5000 mm. This sensor provides a highly favorable price-performance ratio. Typical fields of application can be found in the food, pharmaceutical and packaging industries, for example when filling glass or plastic bottles, packing in plastic or when the detection of clear packaging film is required.

The housing, which for both types measures only 30 x 20 x 10 mm, is compatible with the entire C23 series as well as comparable devices. The IO-Link interface also provides the important additional benefit of remote commissioning, diagnostics and parameterization as standard and at no extra cost. Sensors are Ecolab tested and approved, rated to IP67 and reliably withstand common industrial cleaning processes.

Product Series

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Showing 1–16 of 36 results

Product nameOperating principleRange max.Polarity/OutputConnection typeDatasheet

LLK-1120-200

620-200-241
Operating principle:
Through-beam
Range max.:
10000 mm
Polarity/Output:
Emitter, Test input
Connection type:
PVC, 2 m, 3 wire
Download datasheet

LLK-1120-201

620-200-233
Operating principle:
Through-beam
Range max.:
10000 mm
Polarity/Output:
NPN, Light-on
Connection type:
PVC, 2 m, 3 wire
Download datasheet

LLK-1120-202

620-200-234
Operating principle:
Through-beam
Range max.:
10000 mm
Polarity/Output:
NPN, Dark-on
Connection type:
PVC, 2 m, 3 wire
Download datasheet

LLK-1120-203

620-200-237
Operating principle:
Through-beam
Range max.:
10000 mm
Polarity/Output:
PNP, Light-on
Connection type:
PVC, 2 m, 3 wire
Download datasheet

LLK-1120-204

620-200-238
Operating principle:
Through-beam
Range max.:
10000 mm
Polarity/Output:
PNP, Dark-on
Connection type:
PVC, 2 m, 3 wire
Download datasheet

LLK-1121L-200

620-200-569
Operating principle:
Through-beam
Range max.:
50000 mm
Polarity/Output:
Emitter, Test input
Connection type:
PVC, 2 m, 3 wire
Download datasheet

LLK-1121L-201

620-200-561
Operating principle:
Through-beam
Range max.:
50000 mm
Polarity/Output:
NPN, Light-on
Connection type:
PVC, 2 m, 3 wire
Download datasheet

LLK-1121L-202

620-200-562
Operating principle:
Through-beam
Range max.:
50000 mm
Polarity/Output:
NPN, Dark-on
Connection type:
PVC, 2 m, 3 wire
Download datasheet

LLK-1121L-203

620-200-563
Operating principle:
Through-beam
Range max.:
50000 mm
Polarity/Output:
PNP, Light-on
Connection type:
PVC, 2 m, 3 wire
Download datasheet

LLK-1121L-204

620-200-564
Operating principle:
Through-beam
Range max.:
50000 mm
Polarity/Output:
PNP, Dark-on
Connection type:
PVC, 2 m, 3 wire
Download datasheet

LLS-1120-200

620-200-242
Operating principle:
Through-beam
Range max.:
10000 mm
Polarity/Output:
Emitter, Test input
Connection type:
M12 4-pin
Download datasheet

LLS-1120-201

620-200-235
Operating principle:
Through-beam
Range max.:
10000 mm
Polarity/Output:
NPN, Light-on
Connection type:
M12 4-pin
Download datasheet

LLS-1120-202

620-200-236
Operating principle:
Through-beam
Range max.:
10000 mm
Polarity/Output:
NPN, Dark-on
Connection type:
M12 4-pin
Download datasheet

LLS-1120-203

620-200-239
Operating principle:
Through-beam
Range max.:
10000 mm
Polarity/Output:
PNP, Light-on
Connection type:
M12 4-pin
Download datasheet

LLS-1120-204

620-200-240
Operating principle:
Through-beam
Range max.:
10000 mm
Polarity/Output:
PNP, Dark-on
Connection type:
M12 4-pin
Download datasheet

LLS-1121L-200

620-200-570
Operating principle:
Through-beam
Range max.:
50000 mm
Polarity/Output:
Emitter, Test input
Connection type:
M12 4-pin
Download datasheet