External Cage Liquid Level Switches for the Power Generation Industry DESCRIPTION The models included in this bulletin are sealed external cage liquid level switches selected specifically for use in power generation plants. All models are float-activated and provide highly reliable control in critical applications. Finned cooling extensions and a selection of dry contact switches are available for use in installations with process temperatures as high as +1200° F (+649° C). Magnetrol float level switches are designed to ensure a long service life with little required maintenance. Model B73 FEATURES • Process pressures up to 3300 psi (228 bar) • Process temperatures up to +1000° F (+538° C) with standard models • Finned temperature extensions for applications to +1200° F (+649° C) Model B75 • Specific gravity ratings as low as 0.59 • Numerous snap switches to choose from • Gold contact switch options available • Carbon steel, stainless steel, and chrome-moly float chambers • All stainless steel floats & trim parts APPLICATIONS • Drip legs • Hot wells • Deaerators • Feedwater heaters • Steam drums • Flash tanks Model B40 MODEL NUMBER MODEL NUMBER CODE Pressure Ratings – psi (bar) Model Minimum S.G. +100° F (+38° C) +450° F (+232° C) B73-1B30 0.59 400 (28) 275 (19) B72-1B20 0.76 500 (34) 465 (32) 435 (30) 400 (28) B75-1B20 0.67 1000 (69) 930 (64) 870 (60) 716 (49) 357 (25) 138 (10) V75-1B20 0.74 2240 (154) 1980 (137) 1913 (132) 1455 (100) 728 (50) n/a Z75-1B20 0.68 2193 (151) 1980 (137) 1913 (132) 1425 (98) 713 (49) n/a B40-5C20 0.65 2085 (144) 1845 (127) 1794 (124) 1350 (93) 665 (46) 165 (11) B40-1B60 0.65 2067 (143) 1793 (124) 1751 (121) 1670 (115) 1268 (87) 651 (45) B40-4C40 0.65 3300 (228) 3221 (222) 3132 (216) 2956 (204) 2824 (195) 2735 (189) +900° F (+482° C) +750° F (+399° C) +550° F (+288° C) +1000° F (+538° C) n/a n/a Chamber Float Trim Process Connections B73-1B30 Carbon steel 316/L SS 300 & 400 Series SS 1" NPT/SW, side/bottom B72-1B20 Carbon steel 316/L SS 300 & 400 Series SS 1" NPT/SW, side/bottom B75-1B20 Carbon steel 316/L SS 300 & 400 Series SS 1" NPT/SW, side/bottom V75-1B20 Carbon steel 17–7 ph SS 300 & 400 Series SS 1" NPT/SW, side/bottom Z75-1B20 Carbon steel 17–7 ph SS 300 & 400 Series SS 1" NPT/SW, side/bottom B40-5C20 Carbon steel 321/347 SS 300 & 400 Series SS 1" SW, top/bottom B40-1B60 Chrome-moly 321/347 SS 300 & 400 Series SS 1" SW, top/bottom B40-4C40 316 SS 321/347 SS 300 & 400 Series SS 11⁄2" SW, top/bottom Model Minimum S.G. ELECTRIC SWITCH MECHANISM AND ENCLOSURE Switch Description Models Model B73 & B72 only B75 only Process Temp. Contacts Range °F (°C) Nema ATEX Nema ATEX 4X IP66 4X IP66 Models V75 Model B40-1 Model B40-5 and Z75 only and B40-4 only only Nema 4X ATEX IP66 Nema 4X Series B Snap Switch -40 to +250 (-40 to +121) SPDT BAR BAC BAD BCC BAM BC9 DPDT BDR BBC BDD BFC BDM BF9 Series C Snap Switch -40 to +450 (-40 to +232) SPDT CAR CAC CAD CCC CAM CC9 DPDT CDR CBC CDD CFC CDM CF9 SPDT FAR FAC FAD FCC FAM FC9 FAM DPDT FDR FBC FDD FFC FDM FF9 FDM SPDT HS2 HA9 HS2 HA9 HS2 HA9 DPDT HS6 HB9 HS6 HB9 HS6 HB9 R1M RC9 R1M RC9 Series F Hermetically Sealed Snap Switch -50 to +750 (-46 to +399) Series HS Herm. Sealed 5 amp Snap Switch w/Terminal Block -50 to +400 (-46 to +208) Series R High Temperature Snap Switch -40 to +1000 (-40 to +538) Series S High Temperature Snap Switch -40 to +550 (-40 to +288) SPDT DPDT n/a SPDT DPDT Nema 4X CAM CC9 CDM CF9 FC9 FAM FC9 FF9 FDM FF9 HS2 HA9 n/a n/a R5M HB6 RW5 R1M n/a SAM SA9 SDM SB9 Use caution when specifying carbon and stainless steels for temperature greater than +800° F (+427° C), as it becomes sensitized. Other types and sizes of process connections available. Consult factory. Standard contacts are silver. Gold contacts available. Consult Factory. The ATEX housing provided with codes RW5 and RU5 is cast iron. All other ATEX codes specify cast aluminum enclosures. CONSTRUCTION OPTIONS • Most models available designed, built and certified to ASME B31.1 power piping code. Consult factory. • Model B40-1B60 is available in high pressure design rated for 2533 psi @ +100° F (175 bar @ +38° C) or 1200 psi @ +1000° F (83 bar @ +538° C). Consult factory. • Other process connection types and sizes available. Consult factory. • Series B, F and HS switch available with gold contacts. Consult factory. • Second switch mechanism available on models B75, V75, and Z75. Consult factory. 2 ATEX IP66 n/a n/a n/a ATEX IP66 HB9 RU5 n/a PROCESS TEMPERATURE RATING OF SWITCH Number of Finned Extensions Required Switch Series 0 1 2 3 4 B +250° F (+121° C) n/a n/a n/a n/a C +450° F (+232° C) +500° F (+260° C) +550° F (+288° C) +600° F (+316° C) +650° F (+343° C) F +750° F (+399° C) +850° F (+454° C) +950° F (+510° C) +1050° F (+566° C) +1150° F (+621° C) HS +400° F (+204° C) n/a n/a R +1000° F (+538° C) +1150° F (+621° C) +1200° F (+649° C) S +550° F (+288° C) +600° F (+316° C) +700° F (+371° C) n/a n/a n/a n/a +750° F (+399° C) +800° F (+427° C) For model B40s with one standard finned extension, the number of required extensions is in addition to the one standard finned extension Applies to the S Series switch for AC Applications only (codes SA, SD, SK, and SN). SWITCH Finned Heat Extensions ENCLOSURES • NEMA 4X blue polymer coated carbon steel, weather resistant for non-hazardous areas • ATEX, IP66, NEMA 4X/7/9 blue polymer coated aluminum and cast iron enclosures ATEX, IP66, NEMA 4X/7/9 Aluminum Enclosure BASIC NEMA 4X Carbon Steel Enclosure ELECTRICAL ATEX, IP66, NEMA 4X/7/9 Cast Iron Enclosure RATINGS Switch Series and Non-inductive Ampere Rating Voltage B Gold B C F Gold F HS Gold HS R S 3 120 VAC 15.00 1.00 15.00 2.50 — 5.00 1.00 1.00 15.00 13.00 240 VAC 15.00 — 15.00 — — 5.00 — 1.00 15.00 6.50 24 VDC 6.00 1.00 10.00 4.00 1.00 5.00 1.00 1.00 — 10.00 120 VDC 0.50 — 1.00 0.30 — 0.50 — 0.40 1.00 10.00 240 VDC 0.25 — 0.50 — — 0.25 — — 0.50 5.00 3 AGENCY APPROVALS AGENCY MODEL APPROVED APPROVAL CLASSES FM All with an electric switch mechanism and a housing listed as NEMA 4X Non-hazardous NEMA 4X CSA All with an electric switch mechanism and a housing listed as NEMA 4X/7/9 Non-hazardous CSA Type 4X ATEX All with an electric switch mechanism and an ATEX housing ATEX II 2 G EEx d IIC T6 94/9/EC IP66 CE All models Installation Category II Pollution Degree 2 Low Voltage Directives 2006/95/EC per Harmonized Standard EN 61010-1/1993 & Amendment No. 1 QUALITY The quality assurance system in place at Magnetrol guarantees the highest level of quality throughout the company. Magnetrol is committed to providing full customer satisfaction both in quality products and quality service. The Magnetrol quality assurance system is registered to ISO 9001 affirming its commitment to known international quality standards providing the strongest assurance of product/service quality available. WARRANTY All Magnetrol mechanical level and flow controls are warranted free of defects in materials or 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 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 equipment. There are no other warranties expressed or implied, except special written warranties covering some Magnetrol products. 5300 Belmont Road • Downers Grove, Illinois 60515-4499 • 630-969-4000 • Fax 630-969-9489 • www.magnetrol.com 145 Jardin Drive, Units 1 & 2 • Concord, Ontario Canada L4K 1X7 • 905-738-9600 • Fax 905-738-1306 Heikensstraat 6 • B 9240 Zele, Belgium • 052 45.11.11 • Fax 052 45.09.93 Regent Business Ctr., Jubilee Rd. • Burgess Hill, Sussex RH15 9TL U.K. • 01444-871313 • Fax 01444-871317 Copyright © 2011 Magnetrol International, Incorporated. All rights reserved. Printed in the USA. Performance specifications are effective with date of issue and are subject to change without notice. BULLETIN: 46-160.1 EFFECTIVE: August 2010 SUPERSEDES: June 2004