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level transmitter

Dear sir,

Rosemount model (3051CD3A22A1AM5B4C6Q8) pressure transmitter used for measuring  level of heat exchanger (shell and tube)(wet leg type) with serial (1677827) but the problem that after increasing the capacity, there is sludge built up and transmitter need to drain daily. I want to solve this problem by replacing this transmitter by one of this option(from my point of view):

1- Radar type.

2-Remote seal diaphragm.

i want to guide me for the right choice.

1-if the remote seal is the right choice,

the installed flanged is 2" CL300 RF and i have already a new transmitter but the flange is small(approx. 1") so can i use increaser for this case.

2- if the radar is the right choice,

what recommended type that i use,non contact or guided.

regards,

hashem ali
  • Ingemar Serneby

    In reply to Nathan Stokes:

    In addition to Nathan's thorough reply, I would like to make the following clarifications regarding radar: Guided wave radar are generally very simple to install and even though a bridle generally will make a good fit for a guided wave radar, it will fit top mounted nozzles as well - and in some cases also side mounted nozzles by using a bent probe - if the vessel wall is flat and unobstructed on the inside.
    If you forsee obstacles inside the tank in the close proximity to the guided wave radar probe, I would propose a coaxial probe. The coaxial probe is totally insensitive to disturbances in its close proximity as the radar signal is confined within the probe. The coaxial probe is however more sensitive to build-up inside, which may result in disturbing echoes.
    My best probe recommendation is the single lead probe as it is extremely resistant against build-up. The single lead probe does however need some clearance around it (typically 10cm clearance to a smooth metallic tank wall and 50cm clearance to disturbing objects).
    The configuration of a guided wave radar is, as Natan stated, really easy and is guided step-by-step by the RadarMaster software.
    I would propose a 5301 with a single lead probe (if space permit) and a High Temperature / High Pressure process seal that will resist the maximum temperature and pressure in this application (the standard seal cover up to 40bar pressure and 150degC, which is not sufficient according to the figures given in your previous email).

    Kind regards/Ingemar
  • hashem ali

    In reply to Nathan Stokes:

    Thnx for ur great effort
  • hashem ali
    Dear eng.rachelle,
    I'm very glad to talk with you,
    simply,my aplication that i have heat exchanger (shell and tube) as shown at attached mechanical drawing (the related flanges of transmitter LIT1,2).And DPT is used to measure level(wet leg configuration).After capacity was increased, Sludge built up and as a consequence FWM and transmitter were blocked and need to drain daily.so i need answer clearly for the following questions:
    1-What is suitable action taken to solve this problem?
    2-what is the suitable supersede transmitter that we can use?
    3-why eng.leirbag need to increase the coupling flange?
    finally my company is worked at oil and gas field and located at egypt.
    regards,


    On Wednesday, June 1, 2016 7:36 PM, Rachelle McWright <bounce-Rachelle_McWright@emersonexchange365.com> wrote:


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    		Rachelle McWright
    Hi , can you please tell us more about your application and your general location? Great input coming in here from . , etc. Looks like the community can better help you pinpoint what solutions will work best for you if you are able to supply this info. Thanks!
     
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