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Summary of Contents for Hochiki IFD-E
- Page 1 IFD-E(IS) Intrinsically Safe Flame Detector User Manual...
- Page 2 Hochiki Europe (UK) Ltd General Description This Installation Guide gives information on the intrinsically safe (I.S.) version of the flame detectors that have been approved by BASEEFA (British Approvals Service for Electrical Equipment in Flammable Atmospheres). The requirements of the European Community Directive 94/9/EC, the ATmosphere EXplosives ATEX Directive have been met.
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Page 3: Equipment Markings
Hochiki Europe (UK) Ltd These flame detectors are designed to meet the requirements of Group II apparatus. For the type of protection “i” intrinsically safe, Group II is subdivided into Equipment Categories, Type of Explosive Atmosphere (Table 1), Type of Protection Code (Table 2), Temperature Class (Table 3) and Gas Group (Table 4). - Page 4 Hochiki Europe (UK) Ltd Temperature Class Maximum Surface Referred to Temperature ambient of -20°C to +40°C 85°C Type of Equipment Code Protection Category 100°C Code Intrinsic safety 135°C Intrinsic safety 200°C Flameproof 300°C These Flame Detectors are approved ia. Table 2 – Type of Protection Codes 450°C...
- Page 5 Hochiki Europe (UK) Ltd Intrinsically Safe Product Technical Data Mechanical Housing Material: Die Cast Zinc Alloy See Fig 1 Housing Colour: Blue (typical) Housing Height = 142mm Dimension: Width = 108mm (Excluding Mount) Depth = 82mm Cable Gland Entries: 2 X 20mm...
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Page 6: System Design
Hochiki Europe (UK) Ltd System Design Engineers familiar with codes of practice for hazardous area systems should only undertake the design of an intrinsically safe fire detection system. In Europe the standard is EN 50014, Electrical apparatus for potentially explosive atmospheres – General requirements. -
Page 7: Safety Earth
Hochiki Europe (UK) Ltd Galvanically isolated barriers are widely used with conventional flame detector systems. If the system is of an addressable type with signal pulses on the supply lines then the response time of most standard barriers will be too slow to allow their use. In these applications special galvanically isolated barriers are required that can freely transmit the required protocol pulses without introducing severe voltage drops. -
Page 8: Wiring And Cable Types
Hochiki Europe (UK) Ltd Wiring and Cable Types It is not permitted to connect more than one barrier circuit in the hazardous area to any other circuit. Both separate and twin cables may be used. A pair contained in a type ‘A’ or ‘B’ multicore cable (as defined in clause 5.3 of EN50 039) may also be used, provided that the peak voltage of any circuit... -
Page 9: Installation
Hochiki Europe (UK) Ltd Installation It is important that the IS detectors are installed in such a way that all terminals and connections are protected to at least IP20 with the detector cover fitted. The earth bonding terminals are provided for convenience where continuity of a cable sheath or similar is required Service &... - Page 10 Hochiki Europe (UK) Ltd IS System Drawing NOTE 1 Each Barrier fed circuit must be a separate circuit and must not be connected with any other electrical circuit. NOTE 2 The electrical circuit in the hazardous area must be capable of withstanding an AC test voltage of 500 volts RMS to earth or frame of the apparatus for one minute.
- Page 11 Web: www.hochikieurope.com Hochiki Europe (UK) Ltd. reserves the right to alter the specification of its products from time to time without notice. Although every effort has been made to ensure the accuracy of the information contained within this document it is not warranted or represented by Hochiki Europe (UK) Ltd.
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