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  1. icatwork

    2 wire 4-20mA connection power connections

    Is there a possibility of not using any DC source just connecting 2 wires to the analog input of PLC?
  2. icatwork

    2 wire 4-20mA connection power connections

    Hi, We have transmitters. These will be connected with "2 wire" connection according to project. The problem is about power connections. Do we need an external power connection for "2 wire" connections? If we connect the transmitter's 2 wire to the analog input of PLC is it OK? I need your...
  3. icatwork

    Exproof junction box in an explosive atmosphere

    Yes I need to talk to project manager about this issue. Thank you very much for your help ScottyUK.
  4. icatwork

    Exproof junction box in an explosive atmosphere

    In fact I am a site electrical engineer and I am not responsible for buying the boxes. I just organize the installation of them, so I don't have its certificate. I will try ask the engineer who bought it but they may already put it into its place on the site. This is really something painful. It...
  5. icatwork

    Exproof junction box in an explosive atmosphere

    Hi ScottyUK, The box is manufactured by a local workshop and I don't have a written document of certification. "Don't we have any other way to determine its safety?" Also the construction site we work is "Zone 2" which I think does not need such high certification. I am confused about this...
  6. icatwork

    Exproof junction box in an explosive atmosphere

    Hi all, We have a junction box to be used for a plant at a natural gas rafinary. The box originally was an ATEX certified one. But we needed to drill a hole for 10* cable. We will use ATEX-certified gland for cable entrance. The thing I wonder is; "Does the ATEX approved property of the box...

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