Inductive proximity sensor M18 thread Normally Closed NPN
Description
The operation theory of this type of sensors is based on electromagnetic induction, when metal object approaches sensor, eddy currents generated inside sensor will cause the oscillation circuit to decay, thereby triggering the switch signal. Inductive proximity switch are mainly composed of oscillators, detection coils (generating alternating magnetic fields ) signal processing circuits and output stages.
The oscillator generates high-frequency alternating current, creating an alternating magnetic field around the detection coil. When a metal object enters the magnetic field, it will generate eddy currents (for non-magnetic metals) or hysteresis losses (for magnetic metals) due to electromagnetic induction. Eddy currents or hysteresis effects will absorb oscillation energy, resulting in magnetic field attenuation, oscillation weakening, or cessation. This change is detected by the subsequent circuit and converted into an electrical signal. The signal processing circuit compares the degree of energy attenuation with a preset threshold and drives the output stage (such as a transistor or thyristor) to switch the switch state (on/off).
VALUE TO CUSTOMERS
- Higher durability:
Wide operating temperature range enhances higher reliability
Wide supply voltage range improve compatibility
IP69
Electrical noise immunity protection for longer equipment uptime
- Optimized product structure, minimize service cost.
- High performance design redundancy, minimize issue of after sales service.
Features
- Output high low voltage levels
- Low power consumption 3-15mA
- -30℃-125℃
- Threaded design for easy installation
- Working frequency range:0Hz-5KHz
- Supply voltage range: DC4.5V-DC 36V
- Strong electrical noise immunity, EMC EN IEC 61000-6-4:2019/EN IEC 61000-3-2:2019+A1:2021/EN 61000-6-2:2019
- Robust resistance to vibration: IEC60068-2-64-2019
Application
- Rotary Speed measurement
- Position measurement
- Proximity measurement
| Item | Specification |
|---|---|
| Supply Voltage | DC 4.5V-36V |
| Signal output | NPN(normally closed type) |
| Output high level | ≦VC-0.3)V |
| Output low level | ≦0.3V |
| Protection Level | IP67 |
| Trigger target material | Magnetic steel S pole |
| Air gap | Directly proportional to the magnetic strength of the magnetic steel surface |
| Operational temperature | -30°C to 135°C |
| Connector type | DJ7035A-1.2-11 |
Structural Dimension
Principle
Application 1: Rotary Speed Measurement
Application 2: Proximity Measurement
