High temperature resistant proximity switch XL-GWDG-18NA-05 | Three wire normally open

High temperature resistant proximity switch XL-GWDG-18NA-05 | Three wire normally openIt is mainly used to detect various metal objects and can achieve non-contact detection, control, and output switch signals to control the new type of switch components of the equipment. Its working principle mainly uses metal for detection, and when the switch approaches a metal object, it emits an induction signal. When the metal target approaches this magnetic field without changing and reaches the induction distance, eddy currents are generated inside the metal target, causing oscillation attenuation and even stopping. The changes in oscillator oscillation and stop oscillation are processed by the post amplification circuit and converted into switch signals, triggering the driving control device to achieve non-contact detection.

High temperature resistant proximity switch XL-GWDG-18NA-05 | Three wire normally openIt is a sensor device widely used in the field of industrial automation control. Its unique design and excellent performance enable it to work stably in high temperature environments, providing a reliable detection solution for modern industrial production.

1、 Product Overview and Technical Features
XL-GWDG-18NA-05 is a three wire normally open high-temperature resistant proximity switch, made of high-quality stainless steel housing and special high-temperature resistant materials, capable of stable operation in temperature environments ranging from -25 ℃ to+180 ℃. Its core sensing components adopt imported chips, which have the characteristics of high sensitivity, high repeatability, and long lifespan. The product has a protection level of IP67, which can effectively resist the effects of dust, oil stains, and short-term immersion, and is suitable for various harsh industrial environments.
The working voltage range of this proximity switch is 10-30V DC, with an output current of up to 200mA and a response frequency of 1kHz, which can meet the needs of most industrial automation scenarios. The design of the three wire system (brown wire connected to the positive pole, blue wire connected to the negative pole, and black wire for signal output) makes its wiring more convenient. The normally open characteristic keeps it open when not triggered and closed when triggered, which meets the logical requirements of most control systems.

2、 Core advantages and application scenarios
Compared to ordinary proximity switches, the advantage of XL-GWDG-18NA-05 lies in its high temperature resistance. The working temperature of ordinary proximity switches is usually between -25 ℃ and+70 ℃, but this product has an irreplaceable value in high-temperature industrial scenarios such as metallurgy, glass manufacturing, and ceramic firing by raising the upper limit temperature to 180 ℃ through special design and material selection.
In the steel smelting industry, this product can be used for object detection and position control in high-temperature areas such as continuous casting machines and hot rolling production lines; In the glass manufacturing industry, it can be used for monitoring equipment around furnaces; In the field of injection molding, it can be used for detecting the closing position of high-temperature molds; In the food processing industry, it can be used for automated control of high-temperature processes such as baking and sterilization. In addition, this product also performs well in harsh environments in industries such as chemical, cement, and power generation.

3、 Purchase Guide and Installation Suggestions
When choosing a high-temperature resistant proximity switch, it is important to pay attention to the following parameters: firstly, the temperature range to ensure that the product can adapt to the temperature requirements of the actual working environment; Next is the sensing distance. The standard detection distance of XL-GWDG-18NA-05 is 5mm, and users should choose the appropriate specifications according to their specific application needs; Next is the output type. The normally open type is suitable for most control logics, but in special situations, normally closed products may be required.
When installing, the following points should be noted: avoid installing in environments with strong magnetic or electric fields; Ensure that the object being tested moves within the effective sensing range; When used in high-temperature environments, it is recommended to increase heat dissipation measures or maintain an appropriate distance; Regularly clean the sensing surface to avoid oil stains, metal shavings, and other factors that may affect the detection accuracy. Proper installation and maintenance can significantly extend the product's lifespan.

Check distance (Sn) 2/4/5/8/10/15/20/25mm
Operating frequency (Hz) DC: 500 AC: 25
Working current (mA) 150/200/300/400
Working environment temperature (℃) -25... 75
Repetitive accuracy (R) ≤ 10% Sn
Consumption current/leakage current (mA) 15/0.6/2
Voltage drop (V) 1.5/5/7
Action indicator red LED
Short circuit, polarity protection (DC) none/present
Connection method 1.5M, PUR cable/plug
Shell material brass nickel plating
Induction surface material PBT
Protection level IP67
Compliant with standard GB/14048.10

High temperature resistant proximity switches are used for detection, positioning, counting, etc. in high-temperature and harsh environments. High temperature resistant proximity switches can operate stably in environments ranging from -40 to+200 ℃, and are widely used in high-temperature automation control fields such as power plants, steel plants, metallurgy, casting, cement plants, and mines. By using silicone cables and high-temperature resistant chips, we can solve high-temperature on-site problems for customers with peace of mind.

Product application industry
Steel plants, power plants, cement plants, mines, and similar high-temperature industries, as well as high-temperature environments and high-temperature metal objects

Characteristics:
Environmental temperature -40--+200 ℃
Specifications M12, M18, M30, SP80, SP140
The detection distance can be selected from 1mm to 40mm.
Silicone cable and PTFE cable
Induction method: flush installation, non flush installation
Output mode: PNP/NPN NO/NC DC NO/NC AC NO/NC

Precautions for using proximity switches:

1. DC type switches must use a DC stabilized voltage power supply, and ensure that the ripple Vpp of the stabilized voltage power supply is ≤ 10%. The secondary AC power supply of the insulation transformer is rectified by full wave and filtered by electrolytic capacitors (usually 470-1000uF), and then powered by a DC stabilizer. (Special note: Cannot be used without capacitor filtering).

2. Two wire switches must be loaded and then connected to the power supply. Directly connecting the power supply will damage the switch.

3. The switch shall not be used beyond the rated technical parameters.

4. It is strictly prohibited to connect wires with electricity, and wiring must be strictly in accordance with the color markings on the wiring diagram. Considering the impact of the usage environment, adjust the distance between the switch sensing surface and the detection object, generally taking 80% of the rated operating distance Se.
5. If there are high-voltage and power lines passing through the vicinity of the wiring switch, to prevent the switch from being affected by induction, misoperation or damage, please shield it with a separate metal tube.