Working principle of inductive approach sensor
Inductive sensors work by detecting the eddy currents that are generated on conductive surfaces due to external magnetic fields. These eddy currents result in magnetic losses. The sensors then detect the alternating magnetic field produced by the detection coil and identify the impedance changes caused by the generated eddy currents.
A proximity switch, also referred to as a contactless proximity switch, is an electronic sensor that provides a switch quantity output. When a metal object approaches the sensing area of the switch, the switch can swiftly issue electrical commands without any physical contact, pressure, or sparks. It accurately indicates the position and stroke of the moving mechanism. Even when employed for basic stroke control, its performance in terms of positioning accuracy, operating frequency, lifespan, ease of installation and adjustment, and its ability to function in harsh environments far surpasses that of general mechanical stroke switches.
This proximity switch is widely utilized in various industries, including machine tools, metallurgy, chemical engineering, textiles, and printing. In automatic control systems, it can serve as a crucial element in limit control, counting operations, positioning control, and automatic protection mechanisms.
Characteristic of inductive approach sensor
- A wide variety of options available, with excellent performance and unbeatable cost-effectiveness.
- It has an attractive appearance and offers a stable detection distance, ensuring consistent performance.
- Utilizes oil-resistant and bend-resistant tinned steel wires, providing durability and reliability in various conditions.
- This is a universal product that can completely replace similar items on the market, offering great convenience for users.
- Exhibits good sensitivity, effectively sensing objects. It is equipped with a strong magnetic core, enhancing its performance.
- Stable and reliable, crafted from high-quality materials. It is waterproof, dustproof, and built to last, making it suitable for a wide range of applications.
- Features memory protection. The cable is of excellent quality, sturdy and stable, and it prevents incorrect reverse wiring, adding an extra layer of safety and reliability.

Application of inductive approach sensor
Widely used in assembly lines, machinery industry, electronic equipment, packaging equipment,
food industry, medical equipment, semiconductor equipment, security, manipulators, vending machines, injection molding machines, die-casting machines, printing machines, and other industries.
FAQ
Q:Can Inductive Approach Sensor detect aluminum?
The standard detection object of inductive proximity switches is iron. Aluminum can also be detected, but the detection distance is attenuated to 30%~45% of the standard detection distance. Affected by temperature, humidity, etc., the detection distance is affected at a certain point, and the detection distance is very different from the original. If you use an inductive proximity switch to detect aluminum, you must set the installation distance. Otherwise, it may bring you a lot of unnecessary trouble.
Q: How to deal with the fault of Inductive Approach Sensor?
A: First, our products are produced in a strict quality control system, and the lowest defective rate is controlled.
Second, during the warranty period, we will send new lights with a small batch of new orders. For defective batches of products, we will repair them and resend them to you, or we can discuss solutions according to the real situation.
Q: What is the delivery time for the order?
If the product is in stock, we can deliver it within 1 or 2 days. If the stock is insufficient, the production time is 7-15 days
Q: How big is the discount for large orders?
The quantity is definitely sufficient, we are willing to give you a satisfactory discount, we can discuss when ordering.
Q: How do we guarantee the quality?
Always a pre-production sample before mass production;
Always do a final inspection before shipment;
Q: Can I get a sample of the Inductive Approach Sensor? How long does it take to send out?
Yes. We can provide samples. after receiving the product payment and shipping fee, we will ship within 1-3 days.
Q: How is your logistics?
Usually, we choose DHL, UPS, FedEx, and Alibaba Express, which take about 8 days to receive. We are willing to help you as long as you have shipping request.
Q: If you have any questions about our products, please contact me as soon as possible.
WeChat/Phone:+ 86 13530821762
Email: sales@garantta.com
Whatsapp:+ 86 13530821762
Hot Tags: inductive approach sensor, China inductive approach sensor manufacturers, suppliers, factory, M8 Inductive Sensor, optical sensor with reflector, photoelectric sensor range, Measurement Light Grids, Transparent Object Photoelectric Sensor, dc inductive proximity sensor
Square type inductive sensor specifications
| Model | Detection distance | Set distance | Movement differential | NPN/PNP | Operating mode | Standard test substance | Supply voltage | Consumption current | Load | Residual voltage | Switching frequency | Protection circuit | Ambient temperature | Ambient humidity | Protection grade |
| GPL-0802-NO-2m | 2.5mm | 0~1.8mm | Within 10% detection distance | NPN | normally open | Mild steel (ST37) | below 10-30VDC | below 8mA | below 100mA | below 1V | 1.2KHz | Output polarity reverse protection, power supply reverse polarity protection, surge absorption, short circuit protection | -25~70℃ | 35%~95%RH | IP67 |
| GPL-0802-NC-2m | normal close | ||||||||||||||
| GPL-0902-NO-2m | normally open | ||||||||||||||
| GPL-0902-NC-2m | normal close | ||||||||||||||
| GPL-1204-NO-2m | 4mm | 0-3.2mm | NPN | normally open | 1KHz | ||||||||||
| GPL-1204-NC-2m | normal close | ||||||||||||||
| GPL-1204-PO-2m | PNP | normally open | |||||||||||||
| GPL-1204-PC-2m | normal close | ||||||||||||||
| GPL-1705-NO-2m | 5mm | 0~4mm | Within 10% detection distance | NPN | normally open | Mild steel (ST37) | below 10-30VDC | below 8mA | below 100mA | below 1V | 1KHz | Output polarity reverse protection, power supply reverse polarity protection, surge absorption, short circuit protection | -25~70℃ | 35%~95%RH | IP67 |
| GPL-1705-NC-2m | normal close | ||||||||||||||
| GPL-1705-PO-2m | PNP | normally open | |||||||||||||
| GPL-1705-PC-2m | normal close | ||||||||||||||
| GPL-1805-NO-2m | NPN | normally open | |||||||||||||
| GPL-1805-NC-2m | normal close | ||||||||||||||
| GPL-1805-PO-2m | PNP | normally open | |||||||||||||
| GPL-1805-PC-2m | normal close | ||||||||||||||
| GPL-2510-NO-2m | 10mm | 0~8mm | Within 10% detection distance | NPN | normally open | Mild steel (ST37) | below 10-30VDC | below 8mA | below 100mA | below 1V | 800Hz | Output polarity reverse protection, power supply reverse polarity protection, surge absorption, short circuit protection | -25~70℃ | 35%~95%RH | IP67 |
| GPL-2510-NC-2m | normal close | ||||||||||||||
| GPL-2510-PO-2m | PNP | normally open | |||||||||||||
| GPL-2510-PC-2m | normal close | ||||||||||||||
| GPL-3010-NO-2m | NPN | normally open | |||||||||||||
| GPL-3010-NC-2m | normal close | ||||||||||||||
| GPL-3010-PO-2m | PNP | normally open | |||||||||||||
| GPL-3010-PC-2m | normal close | ||||||||||||||
| GPL-4020-NO-2m | 20mm | 0~16mm | Within 10% detection distance | NPN | normally open | Mild steel (ST37) | below 10-30VDC | below 8mA | below 100mA | below 1V | 400Hz | Output polarity reverse protection, power supply reverse polarity protection, surge absorption, short circuit protection | -25~70℃ | 35%~95%RH | IP67 |
| GPL-4020-NC-2m | normal close | ||||||||||||||
| GPL-4020-PO-2m | PNP | normally open | |||||||||||||
| GPL-4020-PC-2m | normal close |










