CM20 Capacitance proximity switch

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CM20 Capacitance proximity switch

Model explanation of the proximity switch:

1.Switch category:

LM:inductance type CM:capacitance type

SM:Hall type AM:safte explosion-proof type

XM:Mini linear type HM:Reed type RU:Ultrasonic type

5.Output form:

N:Three wire dc NPN output P:Three wire dc PNP output

L:Two wire dc output :Two wire ac output

J:Relay contact output NP:NPN+PNP double output

2.Outward appearance code:

C:Cylinder type;

F:Angular column type and plane installation type)

6.Output state:

A:Normally open(NO) B:Normally close(NC)

C:Normally open(NO)+Normally close(NC)

MU:Mimic voltage MI:Mimic current

MUI:Voltage and current double output

3.Working voltage:

30:6~36VDC 310:5~24VDC 320:12~60VDC

330:10~30VDC 340:10~55VDC 350:10~60VDC

360:5~36VDC 20:90~250VAC 210:24~250VAC

220:380VAC 40:12~240VDC/24~240VAC

50:Special voltage

7.Subsidiart functions:

T:with aviation connector

Y:water proof,oil proof

I:Special requirement

H:High temperature resistance

R:Ring type

4.Detection distance:

01:1mm 05:5mm 10:10mm ......

8.Long distance

L:Long distance

Capacitance Proximity Switch

1.The induction surface of capacitance sensor is composed of two coaxial mental electctrodes, which from a capacitor and connected on RC oscillation circuit, just like an open capacitor electrode.

2.When connecting to power supply, RC oscillator does not work. When an object is clos eto capacitor electrode, the capacitor capacity will increase, and the oscillator will vibrate. Through the treatment of behind stage circuit, both signals of stop oscillation and oscillation will be converted to switch signs for checking

the existence of object. this distance can be obtained, but to nonmetal object, the action distance is determined by material dielectric constant, the more dielectric constant, the more action distance will be obtained.

Liquid level measurement-plastic or glass container

Material level measurement

Checking for broken board

Count the bottles

Detect the tightness of conveyor belt

Counter and detect the material level

Structural category	Object Inductive surface RC Oscillator Switching stage Magnified ouptu stage
Outward appearance illustration