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<br />@ POTTER <br /> <br />" <br /> <br />OSYS-B . <br />OUTSIDE SCREW AND YOKE <br />VALVE SUPERVISORY SWITCH <br /> <br />Potter Electric Signal Company <br />2081 Craig Rd.,/P.O. Box 28480 <br />St. Louis, MO 63146 <br />(314)878-43211 (800) 325-3936 <br /> <br />Potter Electric Signal & Mfg. L TO <br />1967 Leslie Street <br />Don Mills, Ontario, Canada M3B2M3 <br />(416) 441-1833 <br /> <br /> <br />UL AND FM APPROVED <br /> <br />STK. NO.1 01 0003 <br /> <br />Dimensions: 6.5"H x 8.63"W x 2.94"D <br />(16.51cm.H x 21.9cm.W x 7.46cm.D) <br /> <br />Weight: 21b. (.9 kg.) <br /> <br />Enclosure: Cast Aluminum <br />Finished: Red Spatter Enamel <br />All parts non-ferrous metal to resist corrosion <br /> <br />Cover Tamper:Mechanically Activated by Cover Removal <br /> <br />Contact Ratings: One set of S.P.D.T. (Form C) <br />15 Amp. @ 125/250V. AC <br />0.50 Amp. @ 125V. DC <br />0.25 Amp. @ 250V. DC <br />2.50 Amp. @ 0-30V. DC Resistive <br /> <br />Environmental Limitations: Temp. -40oFI + 1400F <br /> <br />The model OSYS-B is used to monitor the open position of <br />an OS& Y (outside screw and yoke) type gate valve. This <br /> <br />switch mounts conveniently on most valves ranging in size <br />from 5" thru 12". This tamper switch contains one set of <br />Form C (S.P.D.T.) contacts. <br /> <br />Service Use: <br />Central Station <br />Local <br />Auxiliary <br /> <br />NFPA-71 Remote Station NFPA-72C <br />NFPA-72A Proprietary NFPA-72D <br />NFPA-72B <br /> <br />The model OSYS-UA (Stk. no. 1010002) is available for <br />valves smaller than 5". See Bulletin 724 for additional <br />information. <br /> <br />FIG. 1 <br />TYPICAL ELECTRICAL CONNECllOHS <br /> <br />TYPICAL SWITCH ACTION <br /> <br />lOCAl CIReLlI <br /> <br />~ ~~~~ <br />0lI-...nurt' Iil.C C1E'\oIC( <br /> <br />()P[JrI WlL~ POSl"Tl:>>l <br /> <br />a:k~~ <br />.. .' <br />_Co <br /> <br />a.0$U) -"'0'{ POSITI:ltril <br /> <br />kEo. <br />.. .' <br />~ <br /> <br />["D-C<' - uN[ R[S,STOR =T[... <br /> <br />T()",~ <br />0.1_ COo.1'aC\, <br /> <br />~~~~ <br />OLL - <br />- <br /> <br />PRINTED IN USA <br /> <br />BULLEnN 518 PAGE 1 OF 2 <br /> <br />OWG.. S4OO51&-15 <br /> <br />REV B <br />