Emerson Launched Magnetic Flow Sensor for Data Centers
The new Rosemount 8795 sensor enables precise cooling loop flow monitoring in space-constrained facility layouts.
Updated on Oct. 9, 2026 in Data Centers
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Emerson has released the Rosemount 8795 magnetic flow sensor specifically for data center hydronic cooling systems. The hardware is designed to maintain accuracy in tight spaces that lack sufficient straight pipe runs.
Why it matters
As data centers pack more high-density computing hardware into smaller physical footprints, existing cooling infrastructure often lacks the straight piping required for traditional flow sensors. This launch simplifies commissioning in these high-density, space-constrained environments.
The Rosemount 8795 provides 0.5% accuracy at zero pipe diameters and 0.2% accuracy at 5U/2D runs, with 0.1% repeatability. It supports pipe diameters from 2 to 18 inches and requires a minimum fluid conductivity of 5µS/cm.
The players
Emerson
An industrial automation company specializing in measurement instrumentation, control systems, and data center cooling infrastructure.
The details
The sensor employs a polytetrafluoroethylene (PTFE) liner—a synthetic fluoropolymer resistant to chemical degradation—and stainless-steel electrodes to measure liquid flow. It uses proprietary software to interpret signal data, allowing for accurate readings in installations where standard piping configurations are impossible. The unit integrates with Rosemount Magnetic Flow Transmitters to output diagnostics and flow metrics for facility management systems.
Timeline
October 8, 2026: Emerson launched the Rosemount 8795 flow sensor.
The Tech Race
This development follows a trend of miniaturizing industrial diagnostic tools to fit the evolving physical layout of high-density data centers. It directly addresses the challenge of traditional flow conditioning requirements that typically mandate significant straight-pipe distances.
Data center operators can now retrofit cooling loops in tighter spaces without needing to redesign piping layouts to accommodate long straight runs. The system requires connectivity to existing Rosemount Magnetic Flow Transmitters to function within a facility's monitoring network.
The takeaway
This sensor removes a mechanical barrier to cooling efficiency in densely packed server facilities. Operators should watch for future technical documentation regarding specific fluid compatibility across varying water-glycol cooling mixtures.
Further reading
For more on the hardware maintaining current global infrastructure, see our latest coverage on Data Centers.
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Do you trust that new data centre technology will effectively improve reliability and cooling performance?
