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Products found: 4
Product SKU № Power supply Voltage Housing Output Switching output Housing material
Price
UDST187I41CL UDST187I41CL
260306-1
DC
10-30V
isolated (switch output)
programming
duralumin
253.75
UDST87I41L UDST87I41L
2603144
DC
10-30V
isolated (switch output)
programming
duralumin
294.86
UDST87I41CL/M8 UDST87I41CL/M8
260313
DC
10-30V
isolated (switch output)
programming
duralumin
294.86
UDST87I41CL UDST87I41CL
260306
DC
10-30V
isolated (switch output)
programming
duralumin
294.86

Ultrasonic sensors for labels

Label reading is a major problem in the printing and labeling industry. Counting labels, or registering them in general, is an integral part of most label printers, labeling machines, converters and fusing machines. The applications are really many. In one form or another, machine manufacturers solve the label reading problem, sometimes with optical sensors, but ultrasonic sensors are a solution that can save a lot of time and give flexibility to the machine they are installed into.

The UDST87 ultrasonic sensor is composed of an emitter and a receiver in one housing, between which there is a narrow gap through which the label passes.

Advantage

A major advantage of ultrasonic technology over optical is that this type of sensor registers almost all differences between substrate and label. The reason for this is that ultrasonic label sensors measure the time it takes for the signal to pass through the area where there is no label (gap) and where there is a label and substrate (label). We can say that they measure thickness. The place of the gap consists only of the material of the base and is thinner than the label + the base, respectively, the sound waves pass faster through the thinner surface and so the sensor is oriented which is a gap and which is a label. It is this principle of operation that makes ultrasonic sensors a perfect solution for registering completely transparent foils and labels produced on a completely transparent base. Reflective materials and surfaces also do not affect the sensor and this gives enormous flexibility to the technology.

Specifics

Of course there are negatives. Ultrasonic label tracking sensors cannot work properly if the gap between the labels is extremely small below 1-2mm. for example. Also acute forms are also difficult and sometimes impossible to report. The operating frequency of ultrasonic sensors is lower, but labeling and printing machines are still not ahead of this speed with their mechanics.

The UDST87 is characterized by a supply voltage of 10-30Vdc, a slot depth in which the label enters 62 mm. Minimum label width 10 mm. It has a material thickness setting.