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Automation, robotics and programmable electronics are very rapidly developing disciplines in recent years. At the moment when modern inductive proximity sensors appeared on the market, the pace of development of individual solutions accelerated even more. These types of sensors are very important for the further development of the construction of actuators, industrial machines, cars or household appliances.
Proximity Hall sensor - NJK-5002C 10mm 6-36V
Proximity sensor with Hall effect , with a cable with the length of 110 cm and nuts to facilitate mounting. It detects metal at a distance of up to 2 mm. The object detection...
Inductive proximity sensor LJ12A3-4-Z / BY 4mm 6-36V
Inductive, digital proximity sensor with a 100 cm long cable and nuts for easy installation. Detects metal at a distance of up to 4 mm . The detection of an object is...
Inductive proximity sensor LJ18A3-8-Z / BY 8mm 6-36V
Inductive, digital proximity sensor with a cable with the length of 100 cm and nuts to facilitate mounting. It detects metal at a distance of up to 8 mm. The object detection...
Inductive proximity sensor LJ12A3-2-Z / BY 2mm 6-36V
Inductive, digital proximity sensor with a cable with the length of 100 cm and nuts to facilitate mounting. It detects metal at a distance of up to 2 mm. The object detection...
Inductive proximity sensor LJ18A3-8-Z / AY 8mm 6-36V
Inductive, digital proximity sensor with a cable with the length of 100 cm and nuts to facilitate mounting. It detects metal at a distance of up to 8 mm. The object detection...
Inductive proximity sensor LJ18A3-8-Z / AX 8mm 6-36V
Inductive, digital proximity sensor with a cable with the length of 100 cm and nuts to facilitate mounting. It detects metal at a distance of 8 mm. The object detection is...
Inductive proximity sensor LJ12A3-4-Z / CY 4mm 6-36V - PNP
Inductive, digital proximity sensor with a cable with the length of 100 cm and nuts to facilitate mounting. It detects metal at a distance of up to 4 mm. The object detection...
Inductive proximity sensor LJ30A3-15-Z / BX 15mm 6-36V
Inductive, digital proximity sensor with a cable with the length of 100 cm and nuts to facilitate mounting. It detects metal at a distance of 15 mm. The object detection is...
Inductive proximity sensor LJ12A3-2-J / DZ 2mm 90-250VAC
Inductive, digital proximity sensor with a cable with the length of 100 cm and nuts to facilitate mounting. It detects metal at a distance of up to 2 mmI. It is powered...
Inductive proximity sensor LJ12A3-2-Z / AX 2mm 6-36V
Inductive, digital proximity sensor with a cable with the length of 100 cm and nuts to facilitate mounting. It detects metal at a distance of up to 2 mm. The object detection...
Inductive proximity sensor E2S-H4N1 4mm 10-30V
The E2S-H4N Inductive Proximity Sensor allows metal detection up to 4 mm away. It has a 200 cm cable length. The response time is less than 1 ms and the switching...
Inductive proximity sensor E2S-H4N1 4mm 5V
Inductive proximity sensor E2S-H4N1 with 200 cm cable. Enables detection of metal up to a distance of 4 mm . The switching frequency is 1000 Hz and the response time is...
Inductive proximity sensor LJ12A3-2-Z / BX 2mm 6-36V
Inductive, digital proximity sensor with a cable with the length of 100 cm and nuts to facilitate mounting. It detects metal at a distance of up to 2 mm. The object detection...
Inductive proximity sensor LJ18A3-8-Z / CY 8mm 6-36V
Inductive, digital proximity sensor with a cable with the length of 100 cm and nuts to facilitate mounting. It detects metal at a distance of up to 8 mm. The object...
Inductive proximity sensor LJ18A3-5-Z / BY 5mm 6-36V
Inductive, digital proximity sensor with a cable with the length of 100 cm and nuts to facilitate mounting. It detects metal at a distance of up to 5 mm. The object detection...
Inductive proximity sensor LJ12A3-2-Z / CY 2mm 6-36V
Inductive, digital proximity sensor with a cable with the length of 100 cm and nuts to facilitate mounting. It detects metal at a distance of up to 2 mm. The object...
Inductive proximity sensor LJ18A3-5-Z / CY 5mm 10-30V
Inductive, digital proximity sensor with a cable with the length of 100 cm and nuts to facilitate mounting. It detects metal at a distance of up to 5 mm. The object detection...
Inductive proximity sensor LJ30A3-15-Z / CY 15mm 6-36V
Inductive, digital proximity sensor with a cable with the length of 100 cm and nuts to facilitate mounting. It detects metal at a distance of 15 mm. The object detection is...
Inductive proximity sensor LJ30A3-10-Z / BY 10mm 6-36V
Inductive, digital proximity sensor with a cable with the length of 100 cm and nuts to facilitate mounting. It detects metal at a distance of 15 mm. The object detection is...
Inductive proximity sensor LJ6A3-1-Z / BX 1mm 6-36V
Inductive digital proximity sensor with 100 cm cable and nuts for easy installation. Detects metal up to a distance of 1 mm . Detection of an object is indicated by a low...
Inductive proximity sensor LJ30A3-10-Z / CY 10mm 6-36V
Inductive proximity sensor with 100 cm wire length. It has nuts for easy installation and detects metal at distances up to 10 mm . Powered from 6 V to 36 V. Detection of an...
Inductive proximity sensor LJ30A3-15-Z / BY 15mm 6-36V
Inductive, digital proximity sensor with a cable with the length of 100 cm and nuts to facilitate mounting. It detects metal at a distance of 15 mm. The object detection is...See also
An inductive proximity sensor is an industrial automation component that changes its output state after detecting a metal or magnetic object in its field . The most common inductive sensor is a finger/roller sensor with a cylindrical body ending on one side with a face in which a coil is built-in, and on the other side with a connection socket or cable.
The coil is the detection element of the sensor, which, when powered, induces an electromagnetic field around it. Introducing metal or magnetic material there causes disturbances in the field, which is detected by the electronic circuit in the sensor, changing the state of its output. Due to the type of face, we distinguish sensors with an open face or closed face .
As a rule, the former have a larger operating field, which is the basic parameter characterizing inductive proximity sensors. The operating range also depends on the type of material that initiates the sensor and describes its material coefficient.
You should also select the outputs with which the sensor is equipped - in the case of binary sensors, the output can be in the form of a potential-free contact switched when the sensor is initiated, in PNP polarity (supply voltage at the moment of initiation) or NPN (voltage close to 0 V at the moment of initiation). sensor).
PNP and NPN sensors are available in the store's assortment. It is also worth knowing that in PNP sensors the output is connected directly to the plus. This is extremely important from the point of view of proper power supply.
Inductive proximity sensors with a binary output may have an NO (Normally Open) and/or NC (Normally Closed) output. Inductive proximity sensors with analog output are also available on the market. Typically, the sensor is equipped with an indicator light that allows you to visually check whether it has been initiated. Proximity sensors connected correctly initiate the activation of the signal lamp and, for example, when metal is detected, they allow current to pass through.
Botland has prepared an offer of the most commonly used inductive proximity sensors for you. These include sensors with NC, NO and NO/NC binary outputs in PNP or NPN polarization in a cylindrical housing, with metric thread and nuts, thanks to which the sensor installation is very simple - it requires a hole of appropriate diameter in the structure.
The supply voltage range is 6 V to 36 V - in the case of typical automation systems, the control system supply voltage is 24 V. If you are building a module in which inductive proximity sensors will be responsible for homing (referencing) the actuator or its precise stopping, use a sensor with a flat forehead with a small field of action (e.g. a sensor with a diameter of 6 mm and a range of 1 mm). The sensor supply voltage can also be in the range of 10-30v.
If the sensor is to act as a protection device, it is worth considering a sensor with an NC output - in the event of damage to the sensor or cable, you will receive a high signal, as in the case of sensor initialization, and will protect your device against damage even if the connection with the sensor is lost. In the case of limit switches, larger NC type sensors are usually used.
For applications where a long sensor range is required, choose inductive proximity sensors with an open front and a large cross-section (e.g. with a diameter of 30 mm and a range of 15 mm - for example, the same sensor with a covered front has a range of 10 mm).
It is also worth remembering about the correct supply voltage for the sensor. This parameter also needs to be taken into account when choosing a specific model (not only PNP but also NPN sensors). In the case of limit switches, larger NC type sensors are usually used.
Typical diameters of inductive proximity sensors are 6 mm, 8 mm, 10 mm, 12 mm, 18 mm, 30 mm (sensor face diameter). In Botland you will also find inductive proximity sensors detecting magnetic objects, as well as sensors in the form of a PCB module with an I2C interface compatible with Arduino, Raspberry Pi, BeagleBone Wio, LinkIt ONE and other microcomputers . The offered sensors available in our store come directly from manufacturers or verified suppliers.
Individual proximity sensors differ in their system solutions, but in most cases the design is based on a coil connected with a capacitor in the LC resonant circuit. This circuit is connected to an oscillator, which is connected to a "decision" circuit that generates the appropriate output signal.
The coil, together with the permanent capacitor, forms an LC system whose resonant vibrations have a frequency depending on the coil's inductance. Bringing a metal object closer to the coil detunes the vibration frequency, which is detected by the built-in electronics.
