• Microsense Technologies Private Limited

Label Sensors

Microsense Technologies offers Label Sensors. It is a microprocessor based smart label sensor with Teach button programming facility. It is specially designed to sense position of label (sticker) on paper which has very minute difference in transparency. The microprocessor uses a 10-bit ADC to convert transparency level into 256 different values. Teach button provides easy setting when the label-type changes from batch to batch. The sensor has two LEDs (red and green) for output On and output Off indication. If the label portion is held below the sensing area and the Teach button pressed, the corresponding value gets stored in memory and the On LED will flash. Similarly, in places where there is no label, on pressing the Teach button, the corresponding value gets stored in memory and the Off LED will flash. The values get stored in non-volatile memory to give same results after power interruptions. If non-label part is held first and then the label part, NC output is obtained - in this case the output will be On when there is no label - so the system is NO or NC operation selectable. The sensor is suitable for all automatic machines where the label is peeled-off from the tape and is stuck on a plastic/ glass/ metallic container or enclosure or product. The sensor operates on 10 to 30 V DC power supply and gives out NPN or PNP transistor output. The supply line is protected for reverse polarity. Output (NPN or PNP) driving capacity is 700 mA and is protected for short-circuit, over-load and inductive load. The main advantage of the sensor is, as it processes the data, it also takes care of 20-30% variation in the transparency level which may occur because of slight change colour shade change or scratches. It is ensured that the sensor works reliably in similar adverse conditions.