How fast do remote monitors update vs SCADA?

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SCADA often polls on seconds-to-minutes timescales and supports control loops. Light remote monitors commonly report on intervals—for example, up to about every 15 minutes (up to 4 readings per hour) on some oilfield cellular units such as iWell Remote. That cadence is usually enough for tank, haul, and pressure exception management, not for high-speed process control.