The field display of the mass flow meter can detect temperature and density; can these values be shown on the central control system as well?
Thread Content
The on-site display of the mass flow meter can show the temperature and density of the material being measured. Can the temperature and density detected by the meter’s display be shown on the central control system without having to reconnect the instrument cables?
Typically, the mass flow meters chosen do not have communication capabilities; they provide a 4-20MA current output. A multi-core shielded cable is required for power supply, and if three signals need to be transmitted, a 6-core cable is necessary.
Hart or Modbus protocol; the AI channel with Hart protocol allows direct reading
It can be read from the DCS via the HART protocol; it does not participate in interlock control or similar functions, so no hard wiring is required!
You also need a HART-enabled input module for this.
Communication is possible. I don’t know what communication protocol your mass flow meter uses? And does your acquisition module have the corresponding communication functions?
I know that Gaon and E+H can provide density output in analog form
Check whether communication is available; for example, Hart communication can be converted to Modbus using a module in the control unit, allowing four variables to be outputted