Capacitive proximity sensor M18 thread Normally Open Closed NPN PNP
Description
The operation theory of this type of sensors is based on triggering switch action by detecting change in capacitance (changes in dielectric constant or electrode distance) when signal trigger (conductor or non-conductive medium) approaches sensor. Capacitive proximity switch mainly consists of two electrodes as two reference plates of capacitor, one electrode (measuring electrode) as part of sensing surface of switch, the other electrode as switch housing or ground housing. When the object is not approaching, a fixed capacitor is formed between the two plates, and the oscillation circuit is in a stationary state. When conductor approaches, it enters the electric field as new electrode, directly changing the distance or area between original electrodes, resulting in a significant increase in capacitance. When non-conductive medium(insulators, like liquid plastic) approaches, it will affect the capacitance value by changing the dielectric constant (ε) between the two plates. The larger the ε is, the more significant the change in capacitance.
VALUE TO CUSTOMERS
- Higher durability:
Wide operating temperature range enhances higher reliability
Wide supply voltage range improve compatibility
Numerous materials as Trigger
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
| ELECTRICAL SPECIFICATIONS | ||||
| CHARACTERISTIC | PARAMETER | |||
| YULI-M18DL-NPN-60-3-NC | YULI-M18DL-NPN-60-3-NO | YULI-M18DL-PNP-60-3-NC | YULI-M18DL-PNP-60-3-NO | |
| Supply Voltage | 4.5V-36V | |||
| Consumption current | 3mA-15mA depends on power supply | |||
| Reverse Voltage Protection | -72V | |||
| Short Circuit Protection | 12V | |||
| Signal Type | NPN normally closed, power on,output low level, LED light on when target approach output high level, LED light off | NPN normally open, power on,output high level, LED light off when target approach output low level, LED light on | PNP normally closed, power on,output low level, LED light on when target approach output high level, LED light off | PNP normally open, power on,output high level, LED light off when target approach output low level, LED light on |
| Signal Output | Φ 4.5mm, conductor 0.2mm² 3-core cable output Brown: VC Black: OUT Blue: GND | |||
| High Output Voltage (Voh) | ≤(VC-0.3)V | |||
| Output low level | ≤0.3V | |||
| Signal Trigger | Liquid Solid | |||
| Working temperature | -30℃-125℃ | |||
| Working frequency | 0 Hz-5K Hz | |||
| Cable length | Typical 1000mm | |||
| Protection level | IP67 | |||
Structural Dimension
Principle
Application 1: Rotary Speed Measurement
Application 2: Proximity Measurement
