Proximity Switches

Our customers can also avail Inductive Proximity Switches from us. These are used to sense metallic objects and are highly useful in medium counting speed. The inductive proximity switches employ the principle, damping of oscillations by conductive material for sensing. Owing to the effectiveness of this product, they find wide application in machine tools/robotics, bulk material handling and for counting/position sensing. These products are made available in various shapes and sizes and are a trusted option for application in various industries such as machine tools, foundries, rolling mills, automobiles, textiles, pharmaceuticals and material handling systems. While it is in operation, a frontally radiated electromagnetic oscillating field is projected from the sensing face and it can easily detect any electrically conductive material entering this field. This change can be detected because of the in-built sensitive and reliable electronic circuit, which converts the damped oscillations into an effective output signal.

We also deal in superior quality Capacitive Proximity Switches, which finds application in Pharmaceuticals, Food Processing and Plastic sector for level sensing. Developed using A-grade material and components, the switches offer exceptional performance for sensing non-metallic, metallic as well as liquid low counting. Speeds. The switches senses dielectric properties of object material and is functional even when inductive type switches can not function.

Application areas:

• Sensing of liquid level
• Sensing of plastic granules & parts
• Sensing of sand / bulk material Level
• Sensing of food, grain, confectionery, paper & rubber
• Sensing of glass bottles, tins in packaging

Working:

The capacitive switches work on the principle of resonant oscillator circuit. Herein, the object acts as a dielectric media and a pair of brass/copper disc form the electrodes of a capacitor. Owing to object, there's a change in capacitance value sensed by an integrated circuit. Thereafter, an effective output signal is generated at a preset value of capacitance.

Specifications:

• Operating Temperature: 55°C Max.
• Response Time: 2 to 5 milliseconds
• Hysteresis: 3% to 15 % of actuating point
• Protection Grade: IP-67
• Quiescent Current: 1) DC - 8 mA Max., AC - 2 mA Max.
• Indication : LED for object status
• Output : 1) To drive a Relay 2) PLC Compatible

Models Available:

Special High Temperature models (Operating Temperature upto 150°C) can be availed from us. These are offered with a teflon front cap and complementary teflon cable. Further, these are armed with a specially designed controller/amplifier unit for smooth functioning. Further, the operating length between sensor
and the controller is maximum 5 meters. Additionally NAMUR type switches can be availed from us with a CMRI certificate, which is offered with a Power Supply Unit
with built-in Zener barrier circuit.

Protections:

• Reverse polarity, overload, short circuit and false pulse protections
• Rugged construction along with IP-67 grade of protection for liquid level monitoring applications

We are well-received in the market for offering Optical Proximity Switches, which are offers excellent solution for automation where orthodox switches have limitations. The switches are armed with Infra-red type sensors and incorporate advance and reliable technology. Owing to higher sensing distance over Inductive and Capacitive type of switches, these are highly demanded in the market. Besides, these are ideal for noisy electromagnetic radiation environment and immune to visible light interference as an infra-red wavelength light source is used.

Sensing distance specified for DS switch is considered with a white object having 90% reflectivity. Sensor is measured at 25°C using a standard object, which is the maximum specified range.

Construction:

• Offered in tubular metallic, acrylic & plastic enclosures
• Armed with an integrated 2-meter long cable
• Built-in (Male) connectors (International M8/M12 size) for quick connections

Switches with optical fiber:

Our clients can also avail Optical Switches with an integrated Optical Fiber cable for flexible mounting and sensing miniature and high temperature objects. Through-beam type switches are offered in a H type enclosures.

Our clients can avail from us Magnetic Proximity Switches, which are used for position sensing applications. However, the object should necessarily be a magnet that can incorporate a hermetically sealed sensitive reed element. Our clients can avail Proximity Switches in two broad categories, Position Sensing Switches with Reed Element and with 2-Wire / 3-Wire Magnetic pick-up sensors. Further, the switches are offered with a 2-core built-in cable. Herein, output is a potential free contact that can switch external load directly. Depending on size of switch, voltage and contact rating configurations are offered. To meet varied demands of our clients, these are offered in different shapes and sizes M12, M18 and M30
and above with Brass/SS enclosures. Besides, we also offer models of latching type switches are available for direction sensing applications.

Specifications:

• Sensing Range: 10 to 50 mm as per strength of object magnet
• Termination: Integrated 2/3-core cable
• Load: 500 mA Max.
• Object: Magnet
• Operating Temp: 70°C / 200°C
• Protection Grade: IP-67

We offer premier quality Ultrasonic Proximity Switches, which finds vast application in diversified sectors. The switches are designed and developed as per industry norms, using high-grade material and components. Suitable for level monitoring, our clients can avail switches in different enclosures to detect various types of objects. Besides, the device performs exceptionally even in dry and dusty environment and are immune to electrical noise level.

Specifications:

• Output Signal : Switching/ Linear output
• Protection Grade : IP-67
• Termination: Integrated 2-meter long cable
• Sensing Range : 0.4 to 20 meters depending on model and application
• Output in the form of switching signal or a linear output current or voltage signal

Applications:

• Level controller for liquids and solids
• Detection of moving objects
• Detecting motion for Opening / Closing of doors

Working Principle:

• The switches incorporate a precise and delicate piezo ceramic ultrasonic transducer pair
• Available in open as well as sealed, the sensors are type transducers
• A modulated ultrasonic signal is sent via transmitter
• Signal is reflected in the object
• Precision measurement of time taken to travel the distance from object to sensor
• Effective output signal (linearly varying / switching type) is produced as per application