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Sewer Pump Station Well Level Sensors: Hydrostatic vs. Ultrasonic vs. Radar

  • 1.  Sewer Pump Station Well Level Sensors: Hydrostatic vs. Ultrasonic vs. Radar

    Posted 6 days ago
    ​Hello All,

    Curious to see which SPS well level instrument you prefer and why?

    I'm looking for input on what instrumentation we specify for our developers and SPS refurbishment program. The majority of ours are hydrostatic and they require regular cleaning or their readings get inaccurate and alarms result. We typically do not have stilling tubes. Have people used stilling tubes with success?

    Thanks,

    Chris


  • 2.  RE: Sewer Pump Station Well Level Sensors: Hydrostatic vs. Ultrasonic vs. Radar

    Posted 5 days ago
    ​Hi Chris,
    We always have 2 level sensors in a well to give us redundancy.
    We chose Multitrode probes for duty because they are robust and affordable (we use stilling tubes for them). They do still require weekly cleaning.
    Our backups are Vega units. They are pretty much set and forget in the backup role. They operate reliably irrelevant of the care of the maintenance personal.
    Along with triple redundancy in the control roles (Local controller, SCADA Packs and Smart Starters) we have had no issues.
    A far cry from when we had float controls!
    Cheers
    Shaun


  • 3.  RE: Sewer Pump Station Well Level Sensors: Hydrostatic vs. Ultrasonic vs. Radar

    Posted 2 days ago
    ​We use radar with float switch backup. We are trying to get all the multitrodes out for safety and cleaning burden reasons. We are looking at having two radars but that's quite experimental at this point. Would need a bit of scada logic to recognise inconsistencies and generate an alarm.
    Really though the only problem with float switches is that you can't tell when they have failed. Otherwise we are happy with them. Radar has been excellent.

    Chris