Intrinsic Safety Overview Rick Ales 8/20/2003 © Swagelok Company, 2003 Evolution of NeSSI End User Value Gen III Circa 200? Gen II Circa 2005 Micro Analytical (enabled by Technology Advances) By.
Download ReportTranscript Intrinsic Safety Overview Rick Ales 8/20/2003 © Swagelok Company, 2003 Evolution of NeSSI End User Value Gen III Circa 200? Gen II Circa 2005 Micro Analytical (enabled by Technology Advances) By.
Intrinsic Safety Overview Rick Ales 8/20/2003 © Swagelok Company, 2003 Evolution of NeSSI End User Value Gen III Circa 200? Gen II Circa 2005 Micro Analytical (enabled by Technology Advances) By Line (enabled by Intrinsic Safety) PnP Smart Devices (enabled by Communication Standard) We are Here Gen I Now Rick Ales 8/20/2003 Miniature/Modular (enabled by Mechanical Standard) © Swagelok Company, 2003 Plug-n-Play Top Hat Concept Presented at IFPAC 2002 by Rob Dubois, Dow Chemical. Rick Ales 8/20/2003 © Swagelok Company, 2003 Hazardous Area Protection Methods Purge Mount electric devices in a cabinet to keep explosive atmosphere out. Explosion Proof Mount electric devices in a cabinet to keep explosion in. Intrinsic Safety Rick Ales 8/20/2003 Prevent the explosion ignition by limiting electrical energy. © Swagelok Company, 2003 FISCO Power Budget • Fieldbus Intrinsically Safe COncept model • Developed by PTB1 in Braunschweig, Germany • Doubles the number of devices per segment. Max Voltage 17.8 Vdc Max Current IIC Group Gas 183 ma @ 14 Vdc Max Current IIB Group Gas 380 ma @ 14 Vdc Max Power 5.24 W Max Co / Lo 5 nF / 10 uH per Device 1. Physikalisch-Technische Bundesanstalt (PTB), http://www.ptb.de/en/index.html Johannsmeyer, "Investigation into the intrinsic safety of fieldbus systems (FISCO)". PTB, report W53, ISBN 3-89429-310-1. Physikalische Technische Bundesanstalt, "Investigations into the intrinsic safety of fieldbus systems". PTB 1994, ISBN 3-89429-512-0 Rick Ales 8/20/2003 © Swagelok Company, 2003 NeSSI Architecture Information - Level 2 LAN (Ethernet) OPC Gateway Field - Level 1 LAN (EtherNet) Control Room Enclosure Class 1 Zone 2 24 VDC CAN Master Circuit 0 Rick Ales 8/20/2003 IS Barrier Sensor Actuator Manager Field By-Line Sample Point Circuit 1 Circuit 2 Logical Segment Class 1 Zone 0/1 Sensor - Level 0 LAN DeviceNet <250 ft @14VDC P V A T Gas Analyzer NeSSI Device Sample System Wireless Handheld HMI © Swagelok Company, 2003