TOP MOUNTING ® Liquid Float Level Switches DESCRIPTION T20 and T21 units are simple, reliable float switches designed for top mounting to 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). Float level switches for single or dual level alarm F E AT U R E S • Carbon or stainless steel process connection materials (other materials available at request) • Flanged and threaded process connections • Process temperature up to 400 °C (750 °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 Optional: - NACE construction (MR-01-75) - Interface calibration - Special actuating levels - Special tank connections - Extreme temperature modifications - Class 1, Group B explosion proof electrical enclosure - Special exterior surface preparation and finish A P P L I C AT I O N S • • • • • • Day Tanks Condensate Receivers Fuel Storage Tanks Cooling Towers Flash Tanks Interface T20 A G E N C Y A P P R O VA L S Agency Approval ATEX II 2G EEx d II C T6, explosion proof II 1G EEx ia II C T6, intrinsically safe CENELEC CCE ➀ EEx d II C T6, explosion proof FM Class I, Div. 1, Groups C & D Class II, Div. 1, Groups E, F & G, Type NEMA 7/9 Non-Hazardous area FM/CSA ➁ R1 (1) 136/MI/433, explosion proof Explosion proof area – Groups B, C, D, E, F & G Type NEMA 4X/7/9 SAA ➁ LRS Explosion proof area Lloyds Register of Shipment (marine applications) GOST/ GOSGORTECHNADZOR ➁ Russian Authorisation Standards Other approvals are available, consult factory for more details ➀ For CCE approved units, use the ATEX explosion proof model numbers. ➁ Consult factory for proper model numbers. Worldwide level and flow solutions P R I N C I P L E O F O P E R AT I O N A permanent magnet A is attached to a pivoted switch B . As the float C rises following the liquid level, it raises the magnet attractor D into the field of the magnet, which in turn snaps against the non-magnetic barrier tube E , tilting the switch. The barrier tube provides a static seal between the switch mechanism and the float, eliminating the need for a flexing bellows seal, packing gland or other failure prone sealing elements. When the liquid level falls, the float draws the magnet attractor below the magnetic field. The magnet swings out and tilts the switch to the reverse position causing low level switch actuation A . B pivot E return spring A D C rising level falling level MOUNTING T21 T20 T20 – SINGLE SWITCH MODEL T21 – DUAL SWITCH MODEL Level alarm applications Narrow differential type Level alarm applications Narrow differential type These instruments are factory calibrated to operate over a narrow level differential band and are ideally suited for liquid level alarm applications, on either high or low level. These instruments utilize two switches, each actuated at a different level and each calibrated with a narrow differential band. 2 AVA I L A B L E S W I T C H M E C H A N I S M S Type of switch module ➀ Max. Process Temp. ➁ Switch ratings – A res. ➂ 24 V DC 240 V AC 120 V AC Micro switch Micro switch Micro switch - DC current Micro switch with gold alloy contacts Hermetically sealed micro switch Hermetically sealed micro switch with silver plated contacts Hermetically sealed micro switch with gold plated contacts Hermetically sealed micro switch Proximity switch - type SJ 3.5 SN Mercury switch Mercury switch Pneumatic bleed type (open air) Pneumatic non bleed type (closed circuit) ➀ ➁ ➂ ➃ max 120 °C (250 °F) max 230 °C (450 °F) max 120 °C (250 °F) max 120 °C (250 °F) max 290 °C (550 °F) max 230 °C (450 °F) max 230 °C (450 °F) max 400 °C (750 °F) max 100 °C (210 °F) max 290 °C (550 °F) max 400 °C (750 °F) max 200 °C (400 °F) max 200 °C (400 °F) 6 10 10 1 5 3 0,5 4 NA 10 10 NA NA 15 15 – – 5 1 0,5 – NA 6,5 6,5 NA NA 15 15 10 1 5 1 0,5 2,5 NA 13 13 NA NA Code B C D U HS ➃ W X F V A 3 J K 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. Type B, C, D & U Type HS Type F, W & X Type V Type A & 3 Type J & K AVA I L A B L E H O U S I N G S • • • • • 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 (one plugged) Standard blue anti corrosive coating • ATEX II 2G EEx d II C T6 • ATEX II 1G EEx ia II C T6 • • • • For Exd use IP 66 Cast Iron One entry (2 entries at request) • Standard blue anti corrosive coating • CENELEC EEx d II C T6 • • • • For pneumatic switches IP 53 (NEMA 3R) IP 55 optional at request Alu base / cold rolled steel cover • Standard blue anti corrosive coating • • • • • For Exd use IP 66 (NEMA 7/9) Die cast Aluminium 2 Entries (one plugged) Standard blue anti corrosive coating • FM, Class I, Div. 1, Groups C & D • FM, Class II, Div. 1, Groups E, F & G 3 F L O AT S E L E C T I O N A N D M A X A C T U AT I N G L E V E L T20 models - float sizes ø 76 x 127 mm ø 102 mm ø 114 mm Specific Gravity (4") (4 1/2") (3" x 5") 0.60 140 (5.5) (see page 7 for more details) T21 models - float sizes ➀ ø 76 x 127 mm ø 102 mm ø 114 mm Specific Gravity (4") (4 1/2") (3" x 5") 0.70 711 (28) 0.70 - - 914 (36) 0.80 - 305 (12) 1219 (48) 0.80 - 254 (10) 1219 (48) 0.90 406 (16) 660 (26) 1219 (48) 0.90 432 (17) 813 (32) 1219 (48) 1.00 711 (28) 1016 (40) 1219 (48) 1.00 889 (35) 1219 (48) 1219 (48) ➀ Max actuating levels as per lowest float EXPEDITE SHIP PLAN (ESP) Several mechanical switches are available for quick shipment, within max. 3 weeks after factory receipt of purchase order, through the Expedite Ship Plan (ESP). Models covered by ESP service are conveniently grey coded in the selection data charts. To take advantage of ESP, simply match the grey coded model number codes (standard dimensions apply). ESP service may not apply to orders of ten units or more. Contact your local representative for lead times on larger volume orders, as well as other products and options. S E L E C T I O N D ATA A complete measuring system consists of: 1. Order code for top mounted models (each unit can be factory calibrated when specific level differentials are specified separately – specify actuating level(s) for either rising or falling level and operating S.G.) 2. Order code for modified models or adders: put an "X" in front of the closest matching order code and specify the modifications/adders separately eg. XT20-AB2A-AAP X = with material certification EN 10204 / DIN 50049-3.1.B 1. Order code for top mounting liquid float level switches BASIC MODEL NUMBER1 T 2 0 T 2 1 single float tandem float - top mounted liquid float level switch - top mounted liquid float level switch MATERIALS OF CONSTRUCTION Code Process connection material A 316 SST (1.4401) 316 (1.4401) D Magnetic sleeve 400 series SST Carbon steel B Float and trim 316 SST (1.4401) PROCESS CONNECTION 1" 4" 5" 6" DN 100 DN 150 Float sizes ø 102 mm (4") ø 114 mm (4 1/2") ø 76 x 127 mm (3" x 5") Threaded NPT connection - for T20 models only B2A B2B B2C ANSI Flanges - for all models 300 lbs RF 150 lbs RF 150 lbs RF 300 lbs RF 150 lbs RF 300 lbs RF H3A H4A J3A J3B J3C K3A K4A K3B K4B K4C K3C DIN flanges form to DIN 2526 - for all models PN 16 PN 25/40 PN 16 PN 25/40 PN 16 PN 25/40 Form C Form C Form C Form C Form C Form C 8FA 8GA 9FA 9GA 9FB 9GB 9FC 9GC SWITCH MECHANISM & ENCLOSURE (see page 5) complete order code for top mounted models 4 Select electric switch mechanism & enclosure for models T20 (see page 3 for switch ratings) All models with material code A Weather proof (IP 66) qty and switch type A 3 B C D F HS U V W X cast Aluminium All models with material codes B & D ATEX (IP 66) CENELEC (IP 66) FM (IP 66) II 2G EEx d IIC T6 II 1G EEx ia II C T6 EEx d IIC T6 NEMA 7/9 Weather proof (IP 66) cast Iron cast Alu. cast Aluminium M20 x 1,5 3/4" NPT cast Aluminium cast Aluminium ATEX (IP 66) CENELEC (IP 66) II 2G EEx d IIC T6 II 1G EEx ia II C T6 EEx d IIC T6 NEMA 7/9 cast Iron cast Alu. M20 x 1,5 3/4" NPT 1" NPT cast Aluminium cast Aluminium FM (IP 66) M20 x 1,5 1" NPT M20 x 1,5 1" NPT M20 x 1,5 1" NPT 1" NPT M20 x 1,5 1" NPT M20 x 1,5 1" NPT M20 x 1,5 1" NPT 1 x SPDT A2P AAP AHC AAC - - AK7 AU7 AKP A2Q AAQ AH9 AA9 - - AK5 AU5 AKQ 1 x DPDT A8P ADP AJC ABC - - AD7 AW7 ANP A8Q ADQ AJ9 AB9 - - AD5 AW5 ANQ 1 x SPDT 32P 3AP 3HC 3AC - - 3K7 3U7 3KP 32Q 3AQ 3H9 3A9 - - 3K5 3U5 3KQ 1 x DPDT 38P 3DP 3JC 3BC - - 3D7 3W7 3NP 38Q 3DQ 3J9 3B9 - - 3D5 3W5 3NQ 1 x SPDT B2P BAP BHC BAC - - BK7 BU7 BKP B2Q BAQ BH9 BA9 - - BK5 BU5 BKQ 1 x DPDT B8P BDP BJC BBC - - BD7 BW7 BNP B8Q BDQ BJ9 BB9 - - BD5 BW5 BNQ 1 x SPDT C2P CAP CHC CAC C2L CAL CK7 CU7 CKP C2Q CAQ CH9 CA9 C2S CAS CK5 CU5 CKQ 1 x DPDT C8P CDP CJC CBC C8L CDL CD7 CW7 CNP C8Q CDQ CJ9 CB9 C8S CDS CD5 CW5 CNQ 1 x SPDT - - - - - - - - - D2Q DAQ DH9 DA9 - - DK5 DU5 DKQ 1 x DPDT - - - - - - - - - D8Q DDQ DJ9 DB9 - - DD5 DW5 DNQ 1 x SPDT F2P FAP FHC FAC - - FK7 FU7 FKP F2Q FAQ FH9 FA9 - - FK5 FU5 FKQ 1 x DPDT F8P FDP FJC FBC - - FD7 FW7 FNP F8Q FDQ FJ9 FB9 - - FD5 FW5 FNQ 1 x SPDT - - - - - - - - - H7A HM2 HFC HA9 - - HB3 HB4 HM3 1 x DPDT - - - - - - - - - H7C HM6 HGC HB9 - - HB7 HB8 HM7 1 x SPDT U2P UAP UHC UAC U2L UAL UK7 UU7 UKP U2Q UAQ UH9 UA9 U2S UAS UK5 UU5 UKQ 1 x DPDT U8P UDP UJC UBC U8L UDL UD7 UW7 UNP U8Q UDQ UJ9 UB9 U8S UDS UD5 UW5 UNQ - - - - - VFS VHS - - - - - - - V5S VBS - - - 1 x SPDT W2P WAP WHC WAC W2L WAL WK7 WU7 WKP W2Q WAQ WH9 WA9 W2S WAS WK5 WU5 WKQ WNQ 1 x DPDT - - - - - - - - - W8Q WDQ WJ9 WB9 W8S WDS WD5 WW5 1 x SPDT X2P XAP XHC XAC X2L XAL XK7 XU7 XKP X2Q XAQ XH9 XA9 X2S XAS XK5 XU5 XKQ 1 x DPDT - - - - - - - - - X8Q XDQ XJ9 XB9 X8S XDS XD5 XW5 XNQ Select pneumatic switch mechanism & enclosure - for models T20 only Pneumatic switch type NEMA 3R (IP 53) Max supply pressure bar (psi) Max liquid temperature °C (°F) Bleed orifice Ø mm (inches) Material code A Material codes B &D 6,9 (100) 200 (400) 1,60 (0.063) JDG JDE 4,1 (60) 200 (400) 2,39 (0.094) JEG JEE 4,1 (60) 370 (700) 1,40 (0.055) JFG JFE 6,9 (100) 200 (400) – KOE KOE 2,8 (40) 200 (400) – KOG – Series J (open air) Series K (closed circuit) Select electric switch mechanism & enclosure for models T21 (see page 3 for switch ratings) All models with material code A qty and switch type A 3 B C D F U W X Weather proof (IP 66) cast Aluminium All models with material codes B & D ATEX (IP 66) CENELEC (IP 66) FM (IP 66) II 2G EEx d II C T6 II 1G EEx ia II C T6 EEx d II C T6 NEMA 7/9 cast Iron cast Alu. M20 x 1,5 3/4" NPT 1" NPT M20 x 1,5 1" NPT M20 x 1,5 1" NPT M20 x 1,5 1" NPT cast Aluminium cast Aluminium Weather proof (IP 66) cast Aluminium ATEX (IP 66) CENELEC (IP 66) FM (IP 66) II 2G EEx d II C T6 II 1G EEx ia II C T6 EEx d II C T6 NEMA 7/9 cast Iron cast Alu. M20 x 1,5 3/4" NPT 1" NPT cast Aluminium cast Aluminium M20 x 1,5 1" NPT M20 x 1,5 1" NPT M20 x 1,5 1" NPT 2 x SPDT A4A ABA ALC ADC - - AL7 AV7 ALA A4B ABB AL9 AD9 - - AL5 AV5 ALB 2 x DPDT A1A AEA APC AGC - - AO7 AY7 AOA A1B AEB AP9 AG9 - - AO5 AY5 AOB 2 x SPDT 34E 3BA 39E 3DE - - 3L7 3V7 3LE 34B 3BB 3L9 3D9 - - 3L5 3V5 3LB 2 x DPDT 31A 3EA 3PC 3GC - - 3O7 3Y7 3OA 31B 3EB 3P9 3G9 - - 3O5 3Y5 3OB 2 x SPDT B4A BBA BLC BDC - - BL7 BV7 BLA B4B BBB BL9 BD9 - - BL5 BV5 BLB 2 x DPDT B1A BEA BPC BGC - - BO7 BY7 BOA B1B BEB BP9 BG9 - - BO5 BY5 BOB 2 x SPDT C4A CBA CLC CDC C4X CBX CL7 CV7 CLA C4B CBB CL9 CD9 C4T CBT CL5 CV5 CLB 2 x DPDT C1A CEA CPC CGC C1X CEX CO7 CY7 COA C1B CEB CP9 CG9 C1T CET CO5 CY5 COB 2 x SPDT D4B DBB DL9 DD9 - - DL5 DV5 DLB D4B DBB DL9 DD9 - - DL5 DV5 DLB 2 x DPDT D1B DEB DP9 DG9 - - DO5 DY5 DOB D1B DEB DP9 DG9 - - DO5 DY5 DOB 2 x SPDT FFA FBA FLC FDC - - FL7 FV7 FLA FFB FBB FL9 FD9 - - FL5 FV5 FLB 2 x DPDT FHA FEA FPC FGC - - FO7 FY7 FOA FHB FEB FP9 FG9 - - FO5 FY5 FOB 2 x SPDT U4A UBA ULC UDC U4X UBX UL7 UV7 ULA U4B UBB UL9 UD9 U4T UBT UL5 UV5 ULB 2 x DPDT U1A UEA UPC UGC U1X UEX UO7 UY7 UOA U1B UEB UP9 UG9 U1T UET UO5 UY5 UOB 2 x SPDT W4A WBA WLC WDC W4X WBX WL7 WV7 WLA W4B WBB WL9 WD9 W4T WBT WL5 WV5 WLB 2 x DPDT W1B WEB WP9 WG9 W1T WET WO5 WY5 WOB W1B WEB WP9 WG9 W1T WET WO5 WY5 WOB 2 x SPDT X4A XBA XLC XDC X4X XBX XL7 XV7 XLA X4B XBB XL9 XD9 X4T XBT XL5 XV5 XLB 2 x DPDT X1B XEB XP9 XG9 X1T XET XO5 XY5 XOB X1B XEB XP9 XG9 X1T XET XO5 XY5 XOB 5 P H Y S I C A L S P E C I F I C AT I O N S Description Specification Measured variable Liquid level / interface level Physical range Process temperature Process pressure (for higher ratings consult factory) Standard models: min S.G. 0,60 (T20) – 0,70 (T21) ø 76 x 127 mm (3" x 5") float Up to 34,5 bar (500 psi) @ 40 °C (100 °F) Up to 400 °C (750 °F) @ 20,7 bar (300 psi) ø 102 mm (4") float Up to 41,3 bar (600 psi) @ 40 °C (100 °F) Up to 400 °C (750 °F) @ 27,6 bar (400 psi) ø 114 mm (4 1/2") float Up to 34,5 bar (500 psi) @ 40 °C (100 °F) Up to 400 °C (750 °F) @ 23,4 bar (340 psi) Process connection material Wetted materials carbon steel or stainless steel (others at request) Float and trim 316 SST (1.4401) Magnetic sleeve 316 SST (1.4401) or 400 series SST E L E C T R I C A L S P E C I F I C AT I O N S Description Specification 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 or dual SPDT or DPDT contacts (dual contacts for T21 models only) or single pneumatic Switch Types (see table on page 3) Dry contact with standard or gold alloy contacts, Mercury, Hermetically sealed, Hermetically sealed with gold or silver plated contacts, Proximity switch, or single pneumatic bleed and non bleed Approvals (see table on page 1) ATEX II 2G EEx d II C T6, explosion proof ATEX II 1G EEx ia II C T6, intrinsically safe CENELEC EEx d II C T6, explosion proof FM/CSA/SAA, explosion proof LRS, Lloyds Register of Shipment (marine applications) GOST/GOSGORTECHNADZOR, Russian Authorisation standards Other approvals are available, consult factory. Cable entries M20 x 1,5 ISO, 1" NPT and 3/4" NPT (or others at request) ELECTRICAL CONNECTION Hazardous area Safe area Relay Power Hazardous area Safe area I.S. 6 Power DIMENSIONS IN mm (inches) Y X Y X Z V Z V W W 46 (1.81) Ref. 62 (2.44) 1" NPT Distance to actuating level min 102 (4) Distance to actuating level min 102 (4) Actuating level Actuating level Model T20 with 1" NPT Model T20 with flange Y X V Z W 46 (1.81) Ref. Distance to upper actuating level min 102 (4) Actuating level Distance to lower actuating level Distance to Maximum Minimum Upper level 1016 mm (40") 102 (4") Lower level 1219 mm (48") 305 (12") min 204 (8) Note: On model T21, the lower float actuates the upper switch mechanism. The upper float actuates the lower switch mechanism. Actuating level Model T21 with flange V W Housing type Models WeatherproofFM (NEMA 7/9) ATEX (Cast Alu) T21 and T20 with HS-switch T20 excl. HS-switch 202 7.94 CENELEC (Cast Iron) All 249 All 165 Pneumatics Switch Module J Pneumatics Switch Module K mm inches 257 10.12 øX Y Z mm inches mm inches mm inches 42 1.66 151 5.93 109 4.29 M20 x 1,5 (*) or 1" NPT (2 entries - 1 plugged) (*) not for FM (NEMA 7/9) 9.80 45 1.77 143 5.63 110 4.33 M20 x 1,5 or 3/4" NPT (single entry - 2 entries at request) 110 4.33 6.50 39 1.54 118 4.65 130 5.12 1/4" NPT Allow 200 mm (7.87") overhead clearance / All housings are 360 ° rotatable 7 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 THE DATE OF ORIGINAL FACTORY SHIPMENT. IF RETURNED WITHIN THE WARRANTY PERIOD; AND, UPON FACTORY INSPECTION OF THE CONTROL, THE CAUSE OF THE CLAIM IS DETERMINED TO BE COVERED UNDER THE WARRANTY; THEN, MAGNETROL INTERNATIONAL WILL REPAIR OR REPLACE THE CONTROL AT NO COST TO THE PURCHASER (OR OWNER) OTHER THAN TRANSPORTATION. MAGNETROL SHALL NOT BE LIABLE FOR MISAPPLICATION, LABOR CLAIMS, DIRECT OR CONSEQUENTIAL DAMAGE OR EXPENSE ARISING FROM THE INSTALLATION OR USE OF THE EQUIPMENT. THERE ARE NO OTHER WARRANTIES EXPRESSED OR IMPLIED, EXCEPT, SPECIAL WRITTEN WARRANTIES COVERING SOME MAGNETROL PRODUCTS. BULLETIN N°: EFFECTIVE: SUPERSEDES: UNDER RESERVE OF MODIFICATIONS Heikensstraat 6, 9240 Zele, België Tel. +32 (0)52.45.11.11 • Fax. +32 (0)52.45.09.93 • E-Mail: [email protected] DEUTSCHLAND Schloßstraße 76, D-51429 Bergisch Gladbach-Bensberg Tel. 02204 / 9536-0 • Fax. 02204 / 9536-53 • E-Mail: [email protected] FRANCE Le Vinci 6 - Parc d’activités de Mitry Compans, 1, rue Becquerel, 77290 Mitry Mory Tél. 01.60.93.99.50 • Fax. 01.60.93.99.51 • E-Mail: [email protected] ITALIA Via Arese 12, I-20159 Milano Tel. (02) 607.22.98 (R.A.) • Fax. (02) 668.66.52 • E-Mail: [email protected] UNITED KINGDOM Unit 1 Regent Business Centre, Jubilee Road Burgess Hill West Sussex RH 15 9TL Tel. (01444) 871313 • Fax (01444) 871317 • E-Mail: [email protected] INDIA B4/115 Safdurjung Enclave, New Delhi 110 029 Tel. 91 (11) 6186211 • Fax 91 (11) 6186418 • E-Mail: [email protected] www.magnetrol.com BENELUX OUR NEAREST REPRESENTATIVE BE 44-117.6 MARCH 2002 January 1996