EXTERNAL CAGELiquid Displacer Level Switches Paints Varnishes Heavy oils Liquids with solids © For CCE approved units, use the ATEX explosion proof model numbers. © Consult factory for proper model numbers. DESCRIPTION External cage type level switches are completely self-contained units designed for side mounting to a tank or vessel with threaded or flanged pipe connections. These switches are engineered to customer specifications. FEATURES • Carbon or stainless steel welded float cages (other materials available at request) • Process temperature up to 260 °C (500 °F) • Single switch level • Standard anti corrosive protection Flanged cages: - Removable sensing unit from cage allows easy maintenance - Specific gravity as low as 0,40 - Process pressure up to 345 bar (5000 psi) Sealed cages: - Sensing unit and cage are self-containing - Specific gravity as low as 0,40 - Process pressure up to 345 bar (5000 psi) Optional: - NACE construction (MR-01-75) - Interface calibration - Customized installation dimensions - Special actuating levels - Code compliance construction - Special tank connections - Class 1, Group B explosion proof electrical enclosure - Special exterior surface preparation and finish APPLICATIONS • Foaming or surging liquids • Agitated fluids • Sewage handling • Dirty liquids Standard & tailor made designs AGENCY APPROVALS

P R I N C I P L E O F O P E R AT I O N The displacer A , which is heavier than the liquid, rests its weight on a spring. Rising liquid level imparts buoyancy to the displacer allowing the spring to move upward. The attraction sleeve B , attached to the spring, moves upward into the field of a permanent magnet C . Magnet motion tilts the switch D for actuation. A non-magnetic barrier tube E provides a static seal between the switch mechanism and the displacer assembly. MOUNTING Sealed Cages Flanged Cages EXPEDITE SHIP PLAN (ESP) Several mechanical switches are available for quick shipment, within...

Type of switch module ® ® For applications with heavy vibration, consult factory for suited switch modules. ® Max process temperature is specified at 40 °C (100 °F) ambient temperature and for non condensing applications. ® For more details - see bulletin BE 42-120. ® For condensing applications, max process temperature is down-rated to 200 °C (400 °F) @ 40 °C (100 °F) ambient. • For Non Ex use • IP 66 • Die cast Aluminium • 2 Entries (one plugged) • Standard blue anti corrosive coating • Housing heater/drain available, consult factory • For Exd/Exi use • IP 66 • Die cast Aluminium • 2 Entries...

® For all models except H51/N52 ® For all models incl. H51/N52 with material code A ® Only in combination with material code A

BASIC MODEL NUMBER - Sealed cages SWITCH MECHANISM & ENCLOSURE (see left page) complete order code for caged models

Measured variable Liquid level / interface level Physical range Process temperature Process pressure (for higher ratings consult factory) Cage and process connection material Carbon steel or stainless steel (others at request) Displacer and trim Magnetic sleeve Wetted materials Switch ratings Up to 15 A @ 240 V AC (depending on switch mechanism) Up to 10 A @ 120 V DC (depending on switch mechanism) Signal Output Single SPDT or DPDT contacts or single pneumatic Switch Types (see table on page 3) Dry contact with standard or gold alloy contacts, Mercury, Hermetically sealed, Hermetically sealed...

- N15 / N32 / N52 Models - Threaded & socket weld side/side cast iron housing Housing type Allow 200 mm (7.87") overhead clearance / All housings are 360 ° rotatable ACTUATING LEVELS IN mm (inches) FOR DIFFERENT SPECIFIC GRAVITIES

Accredited by the RvA ISO-9001 REGISTERED FIRM DNV CsrSfication B.V.. THE NETHERLANDS QUALITY ASSURANCE - ISO 9001 THE QUALITY ASSURANCE SYSTEM IN PLACE AT MAGNETROL GUARANTEES THE HIGHEST LEVEL OF QUALITY DURING THE DESIGN, THE CONSTRUCTION AND THE SERVICE OF CONTROLS. OUR QUALITY ASSURANCE SYSTEM IS APPROVED AND CERTIFIED TO ISO 9001 AND OUR TOTAL COMPANY IS COMMITTED TO PROVIDING FULL CUSTOMER SATISFACTION BOTH IN QUALITY PRODUCTS AND QUALITY SERVICE. PRODUCT WARRANTY ALL MAGNETROL MECHANICAL LEVEL CONTROLS ARE WARRANTED FREE OF DEFECTS IN MATERIALS AND WORKMANSHIP FOR FIVE FULL YEARS FROM...