Aplisens ERH-01 04-07 Manual - Página 4

Procurar online ou descarregar pdf Manual para Interruptor Aplisens ERH-01 04-07. Aplisens ERH-01 04-07 17 páginas. Level switches

1.2 SUBJECT OF TECHNICAL PRODUCT DOCUMENTATION

The subject of this technical product documentation is application, design and installation of level switches.

Level switches are designed for double-position signalling of fluid minimum and maximum.

Designation according to Polish Classification of Products and Services (PKWiU): 26.51.70.0

Designation according to Systematic List of Products (SWW): -0918-132.

Level switches consists of two main groups, separated with diamagnetic partition:

•

relay group, being the converting device part, unified for all types.

In the body there is intermediate magnet, directed with equal pole to the float magnet, and the

miniature connector, supplying electric impulses, resulting from magnet lever arm action, to the

connector contacts switching button. To the connector terminals external cables are connected,

guided though the cable gland.

•

float group, being the level switch sensor group. Depending on level switch application, the float

group is different for each type, and float may look like cylinder with semicircular bowls or ball.

Constant magnet is connected directly or through the lever system to the float, which is directed with the

equal pole to the intermediate magnet of relay group. Float group magnet is protected by housing.

Level switch is activated by the fluid, through the float buoyant force. Fluid level changes cause float

group tilting, which through the magnetic coupling are transferred to the intermediate magnet, which lever

arm closes or opens miniature connector contact. The level switch operation principle is shown by the

following electric diagram. For the minimum level terminals NC-NC are shortened. When level rises,

terminals NC-NC remain shortened until reaching the maximum level. Then the snap switching takes place,

i.e. opening of terminals NC-NC and shorting of terminals NO-NO, which remain shorted until reaching

minimum level by the float.

Updating August 2010

TECHNICAL PRODUCT DOCUMENTATION

Electric diagram

ER5-1047

Page: 4

Pages: 17