Regarding the square-root issue in flow measurement of EJA 110A series differential pressure transmitters
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I recently replaced my gauge with a new one. When configuring it using HART, I wasn’t sure whether to enable the square root function, so I didn’t do it. After installation, the main controller displayed normal readings. Could it be that the transmitter already has the square root function enabled by default? ? Solve or……………………
It’s not necessary to perform the square root calculation on the on-site instrument; it can also be done on the DCS. In your case, the calculation is likely being done on the DCS. By default, such instruments provide linear output at the time of manufacture, unless special requirements are specified
Take a look at the DCS configuration; it seems that the square root of DCS has been applied
All those I’ve used have the square root function implemented in DCS
We also use DCS for square root calculations, but some DCS systems cannot perform such calculations and thus require square root operations to be carried out on the field instruments.
For the differential pressure transmitters of type EJA that we use to measure flow rate, the square root function is enabled on the transmitters themselves; I’m not sure if it’s also enabled in the DCS. I’ll ask my supervisor tomorrow
Flow differential pressure transmitters generally do not have the square root function enabled at the time of manufacture; for flow rates, either the transmitter can be used to apply the square root function or this function can be activated in the DCS, with the same result