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MASS FLOW METER CORE PROCESSOR OUTPUT

Hi all,

Can anyone clarify me what does the Core Processor communicates to transmitter via  RS-485 Communication and also does Mass flow meter core processor gives Mass flow rate as output to transmitter or totalizer pulses.

One more doubt what is the voltage/current pulse output level transmitted by transmitter and how much distance it can be transmitted without flow computer

chandu
  • Wayne Brinkman
    The core processor sends all measured variables and diagnostic values to the transmitter. The primary purpose of the transmitter is to condition power for the core processor, to be a display and configuration interface and to provide physical outputs ( 4-20 mA, pulse and digital communications) for DCS/PLC. The mA output can be transmitted several thousand feet - this is one of the benefits of using current vs voltage. The pulse output distance is dependent on the gauge of the wire and the capacitance of the cable used. If you let your Micro Motion contact know how far you need to transmit the signal we can make a recommendation for the cable to use.

    Wayne R. Brinkman- Sr. Sales Representative

    Emerson Flow

    Mobile 314-223-0112

  • Andrzej Czechowski

    In reply to Wayne Brinkman:

    Let me make a remark: Also for 4/20 mA mode the distance depends on the cable parameters. Voltage drop along the line is restricted, in case of IS circuit the cable L/C shall be restricted.
  • chandu

    In reply to Wayne Brinkman:

    Thank you for your valuable reply sir......I understood the things sir, but let me the following things
    1. If the output from core processor is mass flow rate then can i assume transmitter is converting it to standard output 4-20mA DC and transmitter is in turn giving mass flow pulse output by integrating the flow rate given by core processor ....
    2. Let me know the pulse output level generated at the transmitter end ... i mean pulse output levels of the transmitter ....
  • Wayne Brinkman

    In reply to chandu:

    The pulse output level varies from below 0.3 VDC to 15 VDC. the frequency level can be up to about 11500 Hz and up to 15000 Hz in a fault condition.

    Wayne R. Brinkman- Sr. Sales Representative

    Emerson Flow

    Mobile 314-223-0112

  • Rachelle McWright

    In reply to Wayne Brinkman:

    Very excited to welcome new EE365 member, to the (Missing Group). Your thoughtful responses over the past few weeks have been extremely valuable to this group. Thanks again for your insights and we look forward to seeing more from you in 2015. Cheers!

    Best Regards,

    Rachelle McWright: Business Development Manager, Dynamic Simulation: U.S. Gulf Coast

  • chandu

    In reply to Wayne Brinkman:

    Let me know the answer for my first question tooo

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