Capacitive Proximity Switch with Detective Distance 20mm 6-36VDC NPN NO CM30-3020NA

◆Introduction

The mechanical quantity to be measured, such as displacement, pressure change into an electrical capacitance sensor. Therefore, capacitive sensors can be divided into pole pitch change type, area change type, change the media type categories. Pole pitch change type is generally used to measure the tiny lines or due to force displacement, pressure, vibration caused by the pole pitch changes (see capacitive pressure sensor). Area change type is generally used to measure the angular displacement or larger linear displacement. Change media type commonly used in level measurement and a variety of medium temperature, density determination and humidity.

◆Feature

1. Multiplicity appearance 

2.  Compact volume 

3. High repeat orientation precision 

4. Many output form 

5. Strong protection distribution 

6, High on-off frequency commonly 600Hz 

7. Wide voltage range 

8. Dustproof, vibration-proof, waterproof and oil-proof 

9. With short-circuit protection and inverted connecting protection 

10. Service life up to one million 

11. Adopts envelop glue, temperature resist, oil-proof colophony in it 

12. Limit upgrade product 

◆Working Principle

◆Outward Appearance

◆Technical Parameter

◆Application Illustration       

 The dielectric constants for some important materials are as: