Flow computers hold the numbers that determine who gets paid - custody-transfer volumes and flow rates. Collecting that data from dozens of remote meters reliably is essential for production and allocation reporting. This guide explains how to read flow computers into a cloud SCADA platform over the protocols they speak.
Short version: Most flow computers - Emerson ROC and FloBoss, ABB Totalflow, and others - expose data over Modbus or DNP3. Merobix reads those protocols, so volumes, flow rates, and alarms from remote meters map to tags in a cloud dashboard, over cellular, without an on-premise measurement host.
A flow computer calculates corrected volume and energy to AGA/API standards and exposes the results - volumes, flow rates, and alarms - typically over Modbus (RTU or TCP) and sometimes DNP3. Because those are open protocols, a SCADA platform can read the measurement data without proprietary software.
The hard part is reliability across many remote sites. Merobix reads Modbus and DNP3 flow computers over cellular - a gateway at each site polls the meter, buffers through outages, and connects outbound to the cloud - so today's volumes from every meter land in one dashboard for production and allocation reporting. Historical data is retained in the built-in historian for auditable measurement records.
Yes, over the protocols they expose - Modbus and, for some, DNP3, which Merobix supports. Volumes, flow rates, and alarms map to tags in a cloud dashboard. (Confirm your specific model's protocol during onboarding.)
A cellular gateway at each site polls the flow computer over Modbus or DNP3, buffers through outages, and connects outbound to the cloud - so volumes from every remote meter reach one dashboard without a fixed IP or on-premise host.
Yes. Merobix's built-in historian retains volumes and flow data over time, supporting production and allocation reporting and auditable measurement records.
This page references the standards, specifications, and official documentation published by the organizations below. Editions, product capabilities, and documentation change over time - confirm current requirements and specifications directly with the source.
Last reviewed: July 27, 2026. Merobix is not affiliated with, endorsed by, or sponsored by these organizations; their names are used only to identify the standards and products discussed.
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