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  1. mbellow

    The Black wire should be negative DC return in 4-20mA loops

    Hello, in another forum I posted thread196-248328. I believe a discussion is also need here. John wrote that "It is common for 24 VDC 4-20 mA loops to use black and white pairs, typically with 24 VDC source on the black wire. Black and red is also used. I would like to say that in over 27...
  2. mbellow

    The Black wire should be negative DC return in 4-20mA loops

    thread196-100316 John wrote that "It is common for 24 VDC 4-20 mA loops to use black and white pairs, typically with 24 VDC source on the black wire. Black and red is also used. I would like to say that in over 27 years it has only been over the last few years that people have tried to promote...
  3. mbellow

    Incorrect use of FT for a PDT

    thread196-122680 Hello, I would like to point out that unless a differential pressure transmitter has a square-root output, it should not be designated as ‘FT’, it should be 'PDT'. I know, 'FT' is still widely used with a linear output, but that doesn’t make it correct… What do you think? Mike
  4. mbellow

    Identification Letters for a multiple function device (MV) transmitter

    I’ve yet to see a logical multiple function device (MV) transmitter identification written anywhere. I propose the following for transmitters NOT doing flow calculations: UT-xxxx for a MV utilizing HART communications. UIT-xxxx for a MVT utilizing HART communications with a LCD readout...

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