TOP MOUNTING Liquid Float Level Switches MagnetrolDESCRlpTl°N Float level switches for single T20 and T21 units are simple, reliable float switches or dual level alarm designed for top mounting into tanks or vessels. T20 units utilize a single switch mechanism and float. T21 units utilize two switch mechanisms and two separate floats when widely spaced actuating levels are required. T20 and T21 models are available for any type of open or closed vessel with either threaded or flanged type mounting and actuating depths up to 1219 mm (48 inches). FEATURES • Carbon or stainless steel process connection materials (other materials available at request) • Flanged and threaded process connections • Wide choice of housings and switch mechanisms • Process temperature up to 540 °C (1000 °F) • Up to 2 switch levels (T21) • Specific gravity as low as 0,60 • Process pressure up to 41,3 bar (600 psi) • Standard anti corrosive protection • Custom calibrated • Suited for SIL 2 loops (DPDT switch) Optional: - NACE construction - Interface calibration - Special tank connections - Elevated temperature - Special exterior surface preparation and finish - Stilling well - Tropicalized switch mechanism - Submersible housing APPLICATIONS • Day Tanks • Condensate Receivers • Fuel Storage Tanks • Cooling Towers • Flash Tanks • Interface • High and high/high alarm from single tank entry Worldwide level and flow

A permanent magnet ➀ is attached to a pivoted switch actuator and adjustment screw ➁. As the float ➂ rises following the liquid level, it raises the attraction sleeve ➃ into the field of the magnet, which then snaps against the non-magnetic enclosing tube ➄, actuating the switch ≈. The enclosing tube provides a static pressure boundary between the switch mechanism and the process. On a falling level, an inconel spring retracts the magnet, deactivating the switch. pivot return spring process liquid process liquid rising level falling level T20 – SINGLE SWITCH MODEL Level alarm applications Narrow...

Series B, C, D, R & U Dry contact switches © • Series B and C switches are general purpose units with a selection of maximum liquid temperature ratings • Series D switch is designed for high DC current applications • Series U switches have gold alloy contacts • Series R switches are designed for the highest temperature applications up to +540 °C (+1000 °F) Series J & K Pneumatic switches ® • Suited for process industry applications in hazardous locations or where electrical power is not available • Series J bleed type switch is intended for general purpose applications • Series K switch is specially...

Note: On model T21, the lower float actuates the upper switch mechanism. The upper float actuates the lower switch mechanism. Model T21 with flange

I I EXPEDITE SHIP PLAN (ESP) Several models are available for quick shipment, within max. 4 weeks after factory receipt of purchase order, through the Expedite Ship Plan (ESP). To take advantage of ESP, simply match the blue model number codes. ESP delivery is limited to a maximum of 5 units per order. Contact your local representative for lead times on larger volume orders, as well as other products and options. Order code for T20 models (each unit is factory calibrated to operate on a given specific gravity within the min and the max values listed per model) MODEL NUMBER CODE AND MATERIALS...

Process temperature based on max. 40 °C (100 °F) ambient temperature and for non steam applications. On steam applications, temperature down-rated to +200 °C (+400 °F) process at +40 °C (+100 °F) ambient. Upon prolonged exposure to temperatures above 425 °C (800 °F), the carbide phase of steel may be converted to graphite. Permissible but not recommended for prolonged use above 425 °C (800 °F). (Applies to models T20-A & T20-B.)

Order code for T21 models (each unit is factory calibrated to operate on a given specific gravity within the min and the max values listed per model) MODEL NUMBER CODE AND MATERIALS OF CONSTRUCTION SWITCH MECHANISM & HOUSING (next page) complete order code for T21 models ■>- X = product with a specific customer requirement

PHYSICAL SPECIFICATIONS ELECTRICAL CONNECTION

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 9001:2008 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 THE DATE OF ORIGINAL FACTORY SHIPMENT. IF RETURNED WITHIN THE WARRANTY PERIOD; AND, UPON FACTORY INSPECTION OF...