• Instrumentation

  Fire & Gas Detectors Recommendations

  Posted by Chaitanya E on July 17, 2020 at 8:41 am

  Sensors shall be unaffected by ambient conditions.

  Fire and Gas detectors may be of the smart/addressable (e.g. field bus) type.

  Detectors should have a self test system. This system should be automatically operated.

  Smoke Detectors

  Detectors shall not be sensitive to water vapour.

  The application shall determine the detection principle to be used.

  Detectors shall have local alarm indicators to visually indicate when detectors are in alarm mode.

  Very early smoke detection system may be used for cabinets in LER’s.

  Heat Detectors

  Heat detectors shall not be installed unless no other detection principle can be utilised.

  Heat detectors and settings shall be selected in accordance with NFPA 72E 3-3 Temperature classification.

  Flame Detectors

  Detector shall be of the IR or combination IR/UV type.

  The application shall determine the type to be used.

  Sensors shall not be susceptible to spectral response variation when subjected to continuous operation.

  Gas Detectors

  Line detectors (open path) shall be evaluated in combination with point detection.

  IR detectors should be used.

  Application shall determine if catalytic detectors should be used.

  Chaitanya E replied 3 years, 9 months ago 1 Member · 0 Replies
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