Instruction d'utilisation Omega PSW-850

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User’s Guide
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PSW-850 SERIES
Pressure Switches

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® OMEGAnet On-Line Service Internet e-mail www.omega.com info@omega.com Servicing North America: USA: One Omega Drive, P.O. Box 4047 ISO 9001 Certified Stamford CT 06907-0047 TEL: (203) 359-1660 FAX: (203) 359-7700 e-mail: info@omega.com Canada: 976 Bergar Laval (Quebec) H7L 5A1 TEL: (514) 856-6928 FAX: (514) 856-6886 e-mail: info@omega.ca For immediate technical or application assistance: ® USA and Canada: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA ® Customer Service: 1-800-622-2378 / 1-800

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Pressure Controls Part Numbers: PSW-852, 853, 855, 856 Series Please read all instructional literature carefully and thoroughly before starting. WIRING GENERAL DISCONNECT ALL SUPPLY CIRCUITS BEFORE WIRING. Pressure variations are sensed by a bellows, diaphragm or piston sensor which either actuates or de-actuates one, two or three snap- ELECTRICAL RATINGS STATED IN LITERATURE AND ON acting switches at a pre-determined set point(s). Set point(s) is NAMEPLATE SHOULD NEVER BE EXCEEDED. OVER-LOAD a

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Special Instructions For Vacuum Ranges PSW-855, 856 On vacuum ranges, the C-NO circuit is closed at sea level Controls are factory calibrated for maximum accuracy at the conditions. Therefore, increasing vacuum will cause the C- dial midpoint. Switches may be set together or apart up to NC circuit to close while decreasing vacuum will cause the 100% of the range scale. On dual switch models either C-NO circuit to close. Please make a note of this and switch may be set high. On triple switch mode

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Dimensions Dimension A Models Inches mm NPT Pressure PSW-852CH, 852CG, 852CJ, 852CL, 855CM & PSW-856CH, 856CJ, 856CL, 856CM & PSW-853CH, 853CJ, 853CL, 853CM 5.81 146.84 1/4 PSW-852AA, 852AB, 852AC, 852AD, 852AE, 852AF 8.25 209.6 1/2 PSW-852BI, 852BK, 852BL 4.56 115.8 1/4 PSW-852DN, 855DN, 856DN 5.5 139.70 1/4 PSW-852EO, 852EP 6.44 163.58 1/4 Pressure 6 (152.4 mm) ” PSW-852DN, 855DN, 853D, 856DN PSW-852CH, 852CG, 852CJ, 852CL, 855CM PSW-856CH, 856CJ, 856CL, 856CM PSW-852AA, 852AB, 852AC, PSW-853C

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WARRANTY/DISCLAIMER OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace period to the normal one (1) year product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum coverage on each product. If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service Department w

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Where Do I Find Everything I Need for Process Measurement and Control? OMEGA…Of Course! Shop on line at www.omega.com TEMPERATURE   Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies   Wire: Thermocouple, RTD & Thermistor   Calibrators & Ice Point References   Recorders, Controllers & Process Monitors   Infrared Pyrometers PRESSURE, STRAIN AND FORCE   Transducers & Strain Gages   Load Cells & Pressure Gages   Displacement Transducers   Instrumentation & Ac