Italian AZ PNEUMATICA solenoid valve 304 MR

Italian AZ PNEUMATICA solenoid valve 304 MR

German B+W BWU2045 module

Ganter GN 117-SG-T1-Z2 door lock

Supply Goldammer M30x1.5-L338-02-L1/300/W-230V level gauge

E62F10-102B20 capacitor supplied from Germany

BD flow cytometer concentrated cleaning agent 660585 15ml

FF4-8 DAH 0.7-6.9bar

L+B GEL2444KNPG5K030, GEL 2444KZRT3K050 encoder original

KPM Aqua Boy STI Moisture Meter Germany

ELECTONICO E62. E81-103D10 E62. C58-101E40 RC Filter Capacitor

EGE IGMF-30144 S30144 Flow Sensor from Germany

DIGITAL CAR SPOTTER 5500TELWIN

JAH-NS MTO-2-31-AVG125 马达 FR-AKO LKT33.3-480-DP K18-0605 电容

2A400-170H1 power regulator

WENGLOR CP24MHT80 Inductive Sensor

81-20518-A4 limit switch

Capacitor E62. F10-102B20 1 μ F ± 10% 4000VDC/2700V AC

GM Connection Cable-CABF006

ENEDO-RCB600-ACCC Switching Power Supply

Shandong Zhongfa Industrial specializes in importing European and American imported parts from Germany, the United States, Italy, and other countries; Main products: Industrial spare parts, mechanical and electrical components, commonly used instruments and meters, mechanical equipment, etc.

Industrial knowledge

Hall proximity switch

Hall element is a type of magnetic sensitive component. A switch made using Hall elements is called a Hall switch. When a magnetic object moves closer to the Hall switch, the Hall element on the switch detection surface generates the Hall effect, causing a change in the internal circuit state of the switch, thereby identifying the presence of a magnetic object nearby and controlling the on or off of the switch. The detection object of this proximity switch must be a magnetic object.

Photoelectric proximity switch

A switch made using the photoelectric effect is called a photoelectric switch. Install the light-emitting device and the optoelectronic device in the same detection head in a certain direction. When a reflective surface (the object being detected) approaches, the photoelectric device receives the reflected light and outputs a signal, thereby "sensing" that an object is approaching.

Other types

When the observer or system changes the distance to the wave source, the frequency of the approaching wave will shift, and this phenomenon is called the Doppler effect. Sonar and radar are made using the principle of this effect. Doppler effect can be used to create ultrasonic proximity switches, microwave proximity switches, etc. When an object approaches, the reflected signal received by the proximity switch will produce a Doppler frequency shift, which can identify whether an object is approaching.

structural form

Proximity switches can be divided into cylindrical, square, groove, perforated (through), and separated types according to their external shapes. The cylindrical type is easy to install, but its detection characteristics are the same. The detection part of the groove type is on the inside of the groove, used to detect objects passing through the groove. The through type is rarely produced in China, while it is more commonly used in Japan and can be used for assembling small parts such as screws or balls and buoys into water level detection devices.

Proximity switch wiring diagram

1) There is a difference between two-wire and three wire proximity switches. Three wire proximity switches are divided into NPN and PNP types, and their wiring is different.

2) The wiring of the two-wire proximity switch is relatively simple. The proximity switch can be connected in series with the load and then connected to the power supply.

3) The wiring of the three wire proximity switch: the red (brown) wire is connected to the positive end of the power supply; Connect the blue wire to the 0V end of the power supply; The yellow (black) line is the signal and should be connected to the load. The other end of the load is connected as follows: for NPN type proximity switches, it should be connected to the positive terminal of the power supply; For PNP type proximity switches, they should be connected to the 0V terminal of the power supply.

4) The load of the proximity switch can be a signal light, relay coil, or digital input module of a programmable logic controller (PLC).

Italian AZ PNEUMATICA solenoid valve 304 MR