Level sensors

Plastic Electromagnetic level sernor

metal Electromagnetic level sernor

Resistive Electromagnetic Level Sernor

 

Figure 1 shows the components of an electromagnetic level gauge that operates vertically.
Figures 2 and 3 show an indicator with a normally-open contact. When the level of fluid increases, the float moves from B towards A. As soon as the magnet in the float reaches point A, the contact closes. The movement of the float is normally limited by a mechanical stop. If there is no stop, the contact returns to its original position when the magnet passes point B. When the level of fluid drops, the float moves from A towards B, and as soon as the magnet reaches point A1 the contact opens.The difference between points A and A1 is called the differential, or hysteresis, of the contact.

This differential is normally very small, but it can be increased if necessary using special contacts. To switch a contact from NO to NC or vice versa, it is usually enough to invert the float.

KP28	KPG29	KP40	KPT40

KP30	KP31	KP32	KP33

KP34	KP35	KPG30	KP300

KPK	KPKT	KP39	KPT30-KPT31

KPN	KIMP	KIMG	KIMF

KIMPG	KP38	KIMS	KIMDEX

KAPO940	KAP1300	KIMM	KIMK

KSOM SRM	KSOG SRG	KSRE