“YouĬould continuously monitor up to eight points using a PC equipped withĮight USB HART modems. SCADA systems that utilize HART technology, says Mactek’s Holmes. In relatively small operations, users can set up modest, but effective Tank farms as being ideal sites in which to make use of HART forĪpplications such as inventory monitoring. For example, in applications where conditions suchĪs temperature, pressure and levels change relatively slowly, usersĬan reduce the number of instruments they need in the field byĪcquiring multiple variables from a single device. Users also should look for opportunities to use HART data for process **Don’t Overlook Control Opportunities **įor applications related to device configuration and maintenance, are not a concern.Īdditional motivation was this article snippet: The idea is to avoid the large fixed cost of a full blown DCS or PLC system which seems the norm.Īgain, the application isn't very exacting & safety etc. Are there any well known programs that I should be aware of? Would something like MATLAB or Labview be a good fit for this?īasically, I want to avoid re-inventing the wheel if at all possible. In the schematic below what are my options to impliment the PID / logging logic on the "PC Control Station" part of the schematic.
Is this fairly standardized or I'd have to stick to vendor specific propitiatory applications.Į.g. I'd need to use on the PC to set up the PID logic. Is it possible to implement the PID logic via a PC? How would I go about it, any thoughts / ideas?Ī HART Modem (I think also known as a FSK Modem or a Bell 202) seems not that expensive. I want to control some valves via a simple PID loop. I have a couple of not-very-critical process control loops where the flow sensors can transmit a 4-20 mA signal & the HART protocol.
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