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General Catalog 553-02
MNR 7/4074
MNR 7/4074
Magnetic level controller
MNR 7/4074
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MNR 7/4074

  • For fluids with S.G. > 0.4 
  • Limits: 100 bar / 120 °C
  • Construction: AISI 316 Ti / PTFE 
  • Fittings: 1”1/4 G or 2” G
  • ATEX II 1/2 G - EEx ib IIC T4 (zone 0)
PRINCIPLE

Magnetic Level Controller MNR 7 / 4074 has a magnetic equipment, a guiding stem with built-in Reed contact, fitting and head housing. Magnetic equipment includes 2 fixed magnets and between a float with a built-in magnet. Magnets are all covered by PTFE, non-porous quality. Magnetic equipment is designed to keep the float close to lower magnet in atmosphere or gas fluids. Fixed magnets allow floating action even with fluids of low specific weight. As the liquid is rising and lifting the float, the mobile magnet switches the Reed contact. Reverse operation is when liquid level is lowering.

APPLICATIONS

MNR 7 / 4074 is a sensor for acquiring liquid fill-levels which are subject to category 1 (zone 0) conditions.  

Detection of liquefied gases, level controller for liquids such as fuels, hydrocarbons fluids, water, refrigerating oils, chemicals.  

Fluid viscosity must be < 100 cSt .  

Liquids must be free of solids or/and magnetic particles; they may not become resinous or sticky, or to crystallise.

MOUNTING

MNR 7/4074 has to be mounted like any passive 2 poles device, free of potential, connected to safe zone through a intrinsically safe switching amplifier.

Relay RDN 11, data-sheet 251-01 is convenient for MNR 7/4074

General Catalog 553-02
27/01/2021 10:48
Magnetic level controller
MNR 7/4074
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