ITY & QUAL LESS D E T R ASSU ICE COS V R E S 01 ® ISO SERIES B73 90 B73 instruments are float operated liquid level controls designed for external float cage mounting. These instruments are ideally used for off-on liquid level control, alarm and safety shut-down service in a wide variety of applications including large steam-electric generating stations, oil refineries and chemical processing operations. The B73 is available with either a carbon steel or stainless steel float cage and is suitable for service pressure ratings up to 20.7 bar (300 PSIG) and specific gravity ratings down to 0.60. Liquid float Level switches B73 offer standard design as an economical answer to a wide variety of applications. FEATURES Magnetrol’s B73 level control offers cost effective quality built liquid level control with the reliability of magnetic switching. SEALED FLOAT CAGES – the welded float cage design allows high pressure ratings and leak proof operation. CHOICE OF SWITCH MECHANISM – models are available with mercury switches, dry contact switches for vibration applications, and pneumatic pilot switches. CHOICE OF SWITCH HOUSING – electric switch mechanisms are housed in a choice of moisture proof (IP 65) NEMA 4X, explosion proof NEMA 7/9 (CSA/FM), BASEEFA or CENELEC enclosures. Pneumatic switches are equipped with standard housing rated as NEMA 3R. STAINLESS STEEL CONSTRUCTION – for corrosive service applications a series of models is available constructed completely of type 316 stainless steel. STANDARD PRODUCT CONSTRUCTION Standard B73 controls incorporate the following construction details: FLOAT CAGE – seamless carbon steel sections welded together with float totally enclosed (SST available). TANK CONNECTIONS – 1" NPT standard; socket weld and flanged connections available. FLOAT – Type 316 SST. INTERNAL TRIM – Types 300 and 400 series SST. SWITCH & ENCLOSURE – See SELECTION DATA on p. 3. SPECIFIC GRAVITY & PRESSURE RATING Min specific gravity B73 0,60 Pressure rating Bar @ °C PSIG @ °F 40°C 230°C 100°F 450°F 20,7 19,0 300 275 APPROVALS Agency Approval ➀ CENELEC EEx d IIC T6, explosion proof EEx ia IIC T6, intrinsically safe➁ BASEEFA Ex d IIC T6 CSA ➀ Class I, Div. 1, Groups C & D Class II, Div. 1, Groups E, F & G Class I, Div. 1, Groups B, C & D Class II, Div. 1, Groups E, F & G FM ➀ OPERATING PRINCIPLE A permanent magnet is attached to a pivoted switch mechanism. As the float rises following the liquid level, it raises the magnet attractor into the field of the magnet, which in turn snaps against the non-magnetic barrier tube, tilting the switch mechanism. The barrier tube provides a static seal between the switch mechanism and the float. Non-Hazardous CSA Type 4X Class I, Div. 2, Groups B, C & D Non-Hazardous NEMA 4X Class I, Div. 1, Groups C & D Class II, Div. 1, Groups E, F & G Class I, Div. 1, Groups B, C & D, Class II, Div. 1, Groups E, F & G SAA ➀ Ex d IIC T6 (IP65) ➀ Not available with all switches; Consult factory for proper model numbers. ➁ Consult factory for proper model numbers. Worldwide level and flow solutions AVAILABLE SWITCH MECHANISMS AND APPLICATION DATA B73 controls are available with several different switch mechanisms – each designed for specific service conditions. Brief descriptions of the individual switch mechanisms and their application are given below. Mercury switches – Series A & E Hermetically sealed switches – Series F, HS, W & X Mercury switches offer the advantage of quick visual inspection of contact conditions. Series A switches are heavy duty units with high load carrying capability. Series E switches are specifically designed to provide greater vibration resistance. Hermetically sealed switches are for use in special applications where hermetically sealed contacts are required. The Series F switch is well suited for use in applications where the process temperature does not exceed 400°C (750°F). The Series HS switch features a positively pressurized capsule for the entire swicht mechanism including contacts. It is suited for use in applications where the process temperature does not exceed 290°C (550°F). It is available with easy access terminals. These switches are ideal where salt and other corrosive atmospheres are found. Series W have silverplated and Series X have goldplated contacts; both suitable for liquid temperatures up to 230°C (450°F). Mercury Series HS with terminal block Dry contact switches – Series B, C, D & U These switches are specified in applications where mercury must be avoided – such as in nuclear power plant installations. Series B and C switches are general purpose units with electrical ratings dependent upon maximum liquid temperature. Series D switches are designed for high DC current applications. Series U have gold alloy contacts. Series W & X Pneumatic Switches – Series J & K Pneumatic switches are employed in process industry applications where electrical power is not available or to satisfy safety requirements. The Series J bleed-type switch is intended for general purpose applications. Series K units are specially designed to provide non-bleed operation with a high degree of vibration resistance. Dry contact Pneumatic AVAILABLE SWITCH ENCLOSURES Electric switches – non hazardous area = IP 65/NEMA 4X weather resistant. Electric switches – hazardous area = CENELEC - BASEEFA (IP 66)/NEMA 7/9 (IP 65) explosion proof. Pneumatic switches = NEMA 3R (IP 53) weather resistant. Consult the factory for drain/heater options. All housings are standard available with anti corrosive coating. IP 65 NEMA 4X enclosure NEMA 7/9 enclosure BASEEFA enclosure EXPEDITE SHIP PLAN (ESP) Magnetrol has implemented a quick delivery programme ‘ESP’, for the most popular units and options. The colour coded selections represent those that benefit from the shortest lead times. CENELEC enclosure SELECTION DATA A complete B73 switch, consists of 1 order code: MATERIALS OF CONSTRUCTION 1 2 4 Carbon steel cage with 316 SST float and 400 SST magnetic sleeve. Carbon steel cage with 316 SST float, magnetic sleeve with 316 SST jacket. 316 SST cage and trim and float. SIZE AND TYPE OF PROCESS CONNECTION B B 2 0 3 0 1" NPT threaded connection upper side/bottom 1" NPT socket weld connection upper side/bottom N30 S30 NW 25 DIN FORM C (DIN 2526) ND 16 (DIN 2533) ND 25 (DIN 2534) ▼ FLANGE TYPE & SIZE ▼ MOUNTING STYLE ▼ 1" ANSI type 150 lbs 300 lbs N40 1FA 1GA flanged connection upper side/bottom S40 1FB 1GB flanged connection side/side Switch mechanism and enclosure, refer to table below for pneumatic switch mechanisms and for electric switch mechanisms. complete order code for B73 liquid float level switch B 7 3 SELECT PNEUMATIC SWITCH MECHANISM & ENCLOSURE Pneumatic switch Max. supply pressure Max. liquid temperature Bleed orifice Ø bar (PSIG) °C (°F) mm (inches) mat'l. code 1 mat'l. code 2, 4 description Series J bleed type Series K non bleed type Code (NEMA 3R encl.) 6.9 bar (100 PSIG) 200°C (400°F) 1.60 mm (0.063") JDG JDE 4.1 bar (160 PSIG) 200°C (400°F) 2.39 mm (0.094") JEG JEE 4.1 bar (160 PSIG) 230°C (450°F) 1.40 mm (0.055") JFG JFE 6.9 bar (100 PSIG) 200°C (400°F) — — KOE 2.8 bar (140 PSIG) 200°C (400°F) — KOG — SELECT ELECTRIC SWITCH MECHANISM & ENCLOSURE ➁ All models with material of construction code 1 Switch Description Series A – Max. process temp. °C (°F) ③ Cont. one per encl. 230°C NEMA 4X cast aluminium NEMA 7/9 cast iron 1" NPT M 20 x 1.5 PG 16 1" NPT BASEEFA cast iron M20 x 1.5 3/4" NPT All models with material of construction codes 2 and 4 CENELEC cast iron M20 x 1.5 NEMA 4X cast aluminium 3/4" NPT 1" NPT M 20 x 1.5 PG 16 NEMA 7/9 cast iron 1" NPT BASEEFA cast iron M20 x 1.5 3/4" NPT CENELEC cast iron M20 x 1.5 3/4" NPT SPDT AAP A2P A3P AKR AK8 AU8 AK7 AU7 AAQ A2Q A3Q AKY AK6 AU6 AK5 AU5 (450°F) DPDT ADP A8P A9P ANR AN8 AX8 AD7 AW7 ADQ A8Q A9Q ANY AN6 AX6 AD5 AW5 Series B – 120°C SPDT BAP B2P B3P BKR BK8 BU8 BK7 BU7 BAQ B2Q B3Q BKY BK6 BU6 BK5 BU5 Snap switch (250°F) DPDT BDP B8P B9P BNR BN8 BX8 BD7 BW7 BDQ B8Q B9Q BNY BN6 BX6 BD5 BW5 Mercury switch Series C – 230°C SPDT CAP C2P C3P CKR CK8 CU8 CK7 CU7 CAQ C2Q C3Q CKY CK6 CU6 CK5 CU5 Snap switch (450°F) DPDT CDP C8P C9P CNR CN8 CX8 CD7 CW7 CDQ C8Q C9Q CNY CN6 CX6 CD5 CW5 Series D – Snap switch for DC current appl. 120°C (250°F) SPDT – – – – – – – – DAQ D2Q D3Q DKY DK6 DU6 DK5 DU5 DPDT – – – – – – – – DDQ D8Q D9Q DNY DN6 DX6 DD5 DW5 Series E – Vibration resistant mercury switch 230°C (450°F) SPDT EAP E2P E3P EKR EK8 EU8 EK7 EU7 EAQ E2Q E3Q EKY EK6 EU6 EK5 EU5 DPDT EDP E8P E9P ENR EN8 EX8 ED7 EW7 EDQ E8Q E9Q ENY EN6 EX6 ED5 EW5 Series F – Snap switch hermetically sealed 230°C (450°F) SPDT DPDT FAP FDP F2P F8P F3P F9P FKR FNR FK8 FN8 FU8 FX8 FK7 FD7 FU7 FW7 FAQ FDQ F2Q F8Q F3Q F9Q FKY FNY FK6 FN6 FU6 FX6 FK5 FD5 FU5 FW5 Series HS – Snap switch hermetically sealed with terminal block 230°C (450°F) SPDT – – – – – – – – HM2 H7A H6A HS3 HB1 HB2 HB3 HB4 DPDT – – – – – – – – HM6 H7C H6C HS7 HB5 HB6 HB7 HB8 ➁ Series U – 120°C SPDT UAP U2P U3P UKR UK8 UU8 UK7 UU7 UAQ U2Q U3Q UKY UK6 UU6 UK5 UU5 Snap switch (250°F) DPDT UDP U8P U9P UNR UN8 UX8 UD7 UW7 UDQ U8Q U9Q UNY UN6 UX6 UD5 UW5 Series W – Snap switch hermetically sealed 230°C (450°F) SPDT WAP W2P W3P WKR WK8 WU8 WK7 WU7 WAQ W2Q W3Q WKY WK6 WU6 WK5 WU5 DPDT – – – – – – – – WDQ W8Q W9Q WNY WN6 WX6 WD5 WW5 Series X – Snap switch hermetically sealed 230°C (450°F) SPDT XAP X2P X3P XKR XK8 XU8 XK7 XU7 XAQ X2Q X3Q XKY XK6 XU6 XK5 XU5 DPDT – – – – – – – – XDQ X8Q X9Q XNY XN6 XX6 XD5 XW5 Housing heater and drain available in option. Consult factory for proper model numbers. ③ Max. Process temperatures are based on 38°C (100°F) ambient temperature. OUTLINE DIMENSIONS IN mm (inches) Housing max D ➃ A B Entry C IP 65 (NEMA 4x) 151 (5.93) 109 (4.29) 1" NPT, M20 x 1.5 or PG16 (2 entries - 1 plugged) 459 (18.07) NEMA 7/9 (IP 65) 143 (5.63) 100 (3.94) 1" NPT - 1 entry 453 (17.83) CENELEC/BASEEFA (IP 66) 143 (5.63) 110 (4.33) 3/4" NPT OR M20 x 1.5 - 2 entries 507 (19.80) NEMA 3R (IP 53) Pneumatic K 118 (4.64) 130 (5.12) 1/4" NPT - 2 entries 423 (16.65) NEMA 3R Pneumatic J 118 (4.64) 110 (4.33) 1/4" NPT - 1 entry 423 (16.65) ➃ Allow ± 3 (0.12) tollerances on dimensions and allows 203 (8.00) overhead clearance for cover removal ACTUATING LEVEL DIMENSIONS VS. SPECIFIC GRAVITY – mm (inches) Dimensions Specific gravity 0.60 0.80 1.00 1.20 HL 30 (1.22) 43 (1.69) 49 (1.93) 54 (2.13) LL 53 (2.10) 60 (2.36) 65 (2.56) 68 (2.68) A A A B B B C C C C C D D HL LL 159 ± 2 (6.26 ± 0.08) for material code 1 & 2 163 ± 2 (6.42 ± 0.08) for material code 4 D 250 ± 2 (9.84 ± 0.08) 250 ± 2 (9.84 ± 0.08) 83 ± 2 (3.27 ± 0.08) 160 ± 2 (6.30 ± 0.08) 160 ± 2 (6.30 ± 0.08) Threaded & Socket weld Flanged Flanged upper side/bottom upper side/bottom side/side 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. UNDER RESERVE OF MODIFICATIONS BELGIUM DEUTSCHLAND FRANCE ITALIA UNITED KINGDOM INDIA Heikensstraat 6, 9240 Zele Tel. (052) 45.11.11 Fax. (052) 45.09.93 Schloßstraße 76, D-51429 Bergisch Gladbach-Bensberg Tel. (02204) 9536-0 Fax. (02204) 9536-53 11, Rue A. Einstein, Espace Descartes, 77420 Champs-sur-Marne adresse postale: 77436 Marne-la-Vallée Cédex 2 Tel. (0) 164.68.58.28 Fax. (0) 164.68.58.27 Via Arese 12, I-20159 Milano Tel. (02) 607.22.98 (R.A.) Fax. (02) 668.66.52 Unit 1 Regent Business Centre Jubilee Road Burgess Hill West Sussex RH 15 9TL Tel. (01444) 871313 Fax (01444) 871317 B4/115 Safdurjung Enclave, New Delhi 110 029 Tel. 91 (11) 6186211 Fax 91 (11) 6186418 BULLETIN N°: EFFECTIVE: SUPERSEDES: OUR NEAREST REPRESENTATIVE BE 46-119.6 JANUARY 1996 November 1992