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  1. MaratA

    Flame detectors for Floating roof tank

    Hi, Are there any requirements in the NFPA for equipping a floating roof tank with flame detectors?
  2. MaratA

    voltage drop & high alarm

    What size of cable, mm2? What is model of the detector and type of sensor head(infrared, catalytic or chemical)? What gas is measured, flammable or toxic, H2S? If H2S, then it could be poisoned.
  3. MaratA

    voltage drop & high alarm

    helpyou, What size of cable? Does it have screen? Is it twisted? How many cores connected to detector? Is there junction box between detector and PLC?
  4. MaratA

    voltage drop & high alarm

    What kind of output signal of gas detector?
  5. MaratA

    EX d Vs EX e

    Hi helpyou, As usually Ex e is used for junction boxes, as it's based on using of equipment that is less possible to induce sparks or high temperature. So all equipment installed inside the enclosure has to be Ex e certified. Also it's usually placed in Zone 2. Ex e is allowed for Zone 1 in...

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