Diffused Beam Sensor
Through Beam Sensor with Amplifier Unit
Through Beam Sensor with Built in Amplifier
Retro-Reflective Sensors

Type ø (mm) L (mm) Sn DBT-100 18 90 100 mm DBT-200 18 90 200 mm DBT-500 30 90 500 mm DBT-1K 30 90 1 meter

WORKING PRINCIPLE :

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 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.

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.

FIELD OF APPLICATION :

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

CORRECTION FACTOR FOR SENSING DISTANCE :

Effective Sensing Range = Standard Sensing Range X Correction Factor.

TECHNICAL CHARACTERISTICS :

ORDERING CODE :

SPECIAL NOTE :

External gain adjustment facility : This can be provided in all types, on request. This is useful when different type of material is to be sensed. For example in hopper level sensing application; the type of liquid to be sensed may change in due course. In such case, by turning gain control potentiometer sensitivity can be readjusted. However; the maximum and minimum sensing distance which can be controlled through gain control pot varies with the type. Generally the limit is – 30% to +20% of nominal sensing range specified.

WORKING PRINCIPLE :

This consist of two devices; a light emitter and a light receiver. These two devices are kept apart facing each other.
The Gallium-Aluminium-Arsenide-Luminescent diode integrated in the transmitter sends pulses of light in the infra-red range which are invisible to the human eye. The receiver opposite to the transmitter receive these rays. Sensing is achieved when these rays are interrupted by the object.

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.

FIELD OF APPLICATION :

Through Beam Sensors are used for sensing Semitransparent opaque objects such as Glass/Plastic Bottle, Sliver breakage detection, Paper breakage detection, Door opening/closing etc.

TECHNICAL CHARACTERISTICS :

ORDERING CODE :

IR AMPLIFIER UNIT :
Power supply	230 V AC / 110 V AC ± 10%	Connection	Through connector strip (12 Terminal)
Input	Through Transmitter & Receiver	Dimensions	60 x 70 x 110 mm (H x W x D)
Output	1 C/o relay contact or Digital Output	Mounting	Wall mounting or DIN RAIL mounting

 

CYLINDRICAL CONSTRUCTION

Type	ø (mm)	L (mm)	Sn.
SBTA – 1 K	18	90	1 Mtr.
SBTA – 3 K	18	90	3 Mtrs.
SBTA – 5 K	18	90	5 Mtrs.
SBTA – 10 K	30	90	10 Mtrs.

SLOT CONSTRUCTION

Type	H (mm)	W (mm)	D (mm)	Sn.
SS-20	70	50	15	20 mm
SS-50	80	70	10	50 mm
SS-120	90	144	12	120 mm
SS-220	80	240	15	220 mm

WORKING PRINCIPLE :

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.

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.

FIELD OF APPLICATION :

These sensors are used for label sensing, bottle sensing, door opening/closing, film sensing, object counting, sliver breakage detection etc.

TECHNICAL CHARACTERISTICS :

ORDERING CODE :

WORKING PRINCIPLE :

This is a system which consist of one device and a reflector. The device contains emitter and receiver. The rays emitted by the emitter are reflected by the reflector to the receiver. The sensing of the object occurs when these rays are interrupted.

ADVANTAGES :

• Easy assembly compared to the through beam type.
• Large active sensing range compared to diffused beam type.

FIELD OF APPLICATION :

This sensor can be used where it is difficult to install Through Beam Sensor due to space constraint. Further, simple wiring makes it suitable where sensing objects are bigger in size. Thus these sensors are used for loop control in decoiler, edge detection in paper/sheet metal etc.

TECHNICAL CHARACTERISTICS :

ORDERING CODE :

Example : RBI – 3 K – P – O Retro – Reflective Sensor, Sensing range 3 Mtrs., PNP, Normally open.

Photoelectric Sensor can be used :

#    To drive DC relay

#    Can be coupled directly to any PLC / Logic Circuit

#    Can be used as an input for a Digital Counter / RPM
       Indicator etc.