Photoelectric Sensor works on the principle of modulated Infra-Red rays. These sensors can sense any opaque, semi-transparent objects which comes in its sensing range. Photoelectric Sensors have large operating distance. These are mainly divided into : Diffused Beam Sensor, Through Beam Sensor with Amplifier Unit, Through Beam Sensor with Built in Amplifier, Retro-Reflective Sensors.

1. This consists of two devices, a light emitter and a light receiver. The light receiver device contains amplifier circuit which gives transistorised output. These two devices are kept apart facing each other. The transmitter sends pulses of light in the infra red range which are invisible to the human eye. The receiver device opposite to the transmitter receives these rays. On interruption of these rays by the target object, receiver gives a signal which is amplified and fed to output transistor.

2. ADVANTAGES

   - Large sensing distance is possible as emitter and receiver are kept opposite to each other. - Suitable for precise detection of large as well as small objects. Repeatability and indexing precision are not impaired even if the object surface or background is reflecting. - Can be coupled directly to PLC.

This is designed for sensing Registration Mark. It continuously scans the presence of registration mark on the moving packaging film. The electronic circuitary is capable of detecting any colours on any background colour. The scanning rate is as high as 2000 packages minute making it suitable for any type of packaging machine including candy packing machine.

Inductive Proximity Sensors are used for non-contact metal sensing. Being contactless sensors these can be used for position sensing, speed measurement, counting, etc. They can be used in extreme conditions, such as oily, dusty, corrosive environment. Their application ranges from automobile industries to steel industries, from CNCNC machines to material handling equipments, process automation, conveyor systems, packaging machines.

Operating Principle

An inductive proximity switch is designed to detect, and react to any metal object which moves into the operating zone situated immediately in front of its sensing face.

This sensing face comprises a coil, the winding of which is fed from an oscillator, the whole creating an alternating magnetic field in front of the coil.

Whenever a metal object moves into this field, the resulting induced currents form an additional load, and the oscillations cease

Inductive proximity sensors can be used for position sensing, Speed measurement, Counting & in condition such as oily, dusty, corrosive enviroment. Their applications are in Automobile, Steel Industries, CNC/NC machines, Conveyor systems, packaging machines etc. These 3 wire DC sensors are with NPN or PNP transistorised output and the load is connected in parallel.

1. This is designed for sensing Registration Mark. It continuously scans the presence of registration mark on the moving packaging film. The electronic circuitary is capable of detecting any colours on any background colour. The scanning rate is as high as 2000 packages / minute making it suitable for any type of packaging machine including candy packing machine.

2. WORKING PRINCIPLE

   A modulated, Green LED is focused on the moving packaging film. A highly sensitive Photo cell continuously accepts the reflections from the film (paper / plastic) and sends the signals to the electronic scanning circuit. On scanning the presence of Registration Mark; it gives transistorised output. A logic controller is also provided which accepts signals from scanning head & other Proximity Sensors to keep correct pouch / bag length by driving correction motor (110V AC, 4 wire) or (230VAC, 3 wire).

3. SALIENT FEATURES

   Fully solid state thus making it a totally reliable. Immune to external light source, electrical interference. A selector switch provided to choose Dark switching or light switching. High speed switching i.e. 2000 marks / min. Detection of different contrast sheds by means of sensitivity pot provision.

1. This device consist of a transmitter and a receiver together. This look alike Inductive Proximity Sensor and hence is also known as IR Proximity Sensor. The emitter emits Infra red rays which are reflected on the receiver through the object to be registered. In the use of these sensors, it is important to bear in mind the colour of the object. Light colour corresponds to the maximum distance and vice versa. In case of shiny object; the effect of surface of object is more important than the colour.

2. ADVANTAGES

   - Transmitter and receiver are housed in the same housing. - As the self reflection of an object is used for detection; Dark & Light marks can be distinguished.

3. FIELD OF APPLICATION

   These Sensors are particularly used for position sensing and counting of non metallic objects. It is also used for Bottle sensing, Label sensing, Level sensing, Height sensing, Plastic film sensing, Edge detection of paper or sheet metal etc.

Inductive sensor with analog output works in similar way as standard 3 wire DC Inductive Sensors. When a metal target comes in vicinity of the sensor , energy is drawn from the oscillator.This energy loss is in proportional with the distance between sensor and the target ; which is converted in analog signal. The analog signal is made linear and then amplified to give 0-10 V output.

Photoelectric Sensor works on the principle of modulated Infra-Red rays. These sensors can sense any opaque, semi-transparent objects which comes in its sensing range. Photoelectric Sensors have large operating distance. These are mainly divided into : Diffused Beam Sensor, Through Beam Sensor with Amplifier Unit, Through Beam Sensor with Built in Amplifier, Retro-Reflective Sensors.

1. This consists of two devices, a light emitter and a light receiver. The light receiver device contains amplifier circuit which gives transistorised output. These two devices are kept apart facing each other. The transmitter sends pulses of light in the infra red range which are invisible to the human eye. The receiver device opposite to the transmitter receives these rays. On interruption of these rays by the target object, receiver gives a signal which is amplified and fed to output transistor.

2. ADVANTAGES

   - Large sensing distance is possible as emitter and receiver are kept opposite to each other. - Suitable for precise detection of large as well as small objects. Repeatability and indexing precision are not impaired even if the object surface or background is reflecting. - Can be coupled directly to PLC.

This is designed for sensing Registration Mark. It continuously scans the presence of registration mark on the moving packaging film. The electronic circuitary is capable of detecting any colours on any background colour. The scanning rate is as high as 2000 packages minute making it suitable for any type of packaging machine including candy packing machine.

Inductive Proximity Sensors are used for non-contact metal sensing. Being contactless sensors these can be used for position sensing, speed measurement, counting, etc. They can be used in extreme conditions, such as oily, dusty, corrosive environment. Their application ranges from automobile industries to steel industries, from CNCNC machines to material handling equipments, process automation, conveyor systems, packaging machines.

Operating Principle

An inductive proximity switch is designed to detect, and react to any metal object which moves into the operating zone situated immediately in front of its sensing face.

This sensing face comprises a coil, the winding of which is fed from an oscillator, the whole creating an alternating magnetic field in front of the coil.

Whenever a metal object moves into this field, the resulting induced currents form an additional load, and the oscillations cease

Inductive proximity sensors can be used for position sensing, Speed measurement, Counting & in condition such as oily, dusty, corrosive enviroment. Their applications are in Automobile, Steel Industries, CNC/NC machines, Conveyor systems, packaging machines etc. These 3 wire DC sensors are with NPN or PNP transistorised output and the load is connected in parallel.

1. This is designed for sensing Registration Mark. It continuously scans the presence of registration mark on the moving packaging film. The electronic circuitary is capable of detecting any colours on any background colour. The scanning rate is as high as 2000 packages / minute making it suitable for any type of packaging machine including candy packing machine.

2. WORKING PRINCIPLE

   A modulated, Green LED is focused on the moving packaging film. A highly sensitive Photo cell continuously accepts the reflections from the film (paper / plastic) and sends the signals to the electronic scanning circuit. On scanning the presence of Registration Mark; it gives transistorised output. A logic controller is also provided which accepts signals from scanning head & other Proximity Sensors to keep correct pouch / bag length by driving correction motor (110V AC, 4 wire) or (230VAC, 3 wire).

3. SALIENT FEATURES

   Fully solid state thus making it a totally reliable. Immune to external light source, electrical interference. A selector switch provided to choose Dark switching or light switching. High speed switching i.e. 2000 marks / min. Detection of different contrast sheds by means of sensitivity pot provision.

1. This device consist of a transmitter and a receiver together. This look alike Inductive Proximity Sensor and hence is also known as IR Proximity Sensor. The emitter emits Infra red rays which are reflected on the receiver through the object to be registered. In the use of these sensors, it is important to bear in mind the colour of the object. Light colour corresponds to the maximum distance and vice versa. In case of shiny object; the effect of surface of object is more important than the colour.

2. ADVANTAGES

   - Transmitter and receiver are housed in the same housing. - As the self reflection of an object is used for detection; Dark & Light marks can be distinguished.

3. FIELD OF APPLICATION

   These Sensors are particularly used for position sensing and counting of non metallic objects. It is also used for Bottle sensing, Label sensing, Level sensing, Height sensing, Plastic film sensing, Edge detection of paper or sheet metal etc.

Inductive sensor with analog output works in similar way as standard 3 wire DC Inductive Sensors. When a metal target comes in vicinity of the sensor , energy is drawn from the oscillator.This energy loss is in proportional with the distance between sensor and the target ; which is converted in analog signal. The analog signal is made linear and then amplified to give 0-10 V output.