Process Indicators & Control Units

Endress+Hauser Process Indicators & Control Units make process values easy to see, verify, and use. They indicate, evaluate, and calculate analog measurements with universal inputs for current, voltage, RTDs and thermocouples, and present them on large, high‑contrast displays. Loop‑powered models require no separate supply and drop minimal voltage for use in intrinsically safe circuits. Fieldbus indicators visualize variables already on FOUNDATION Fieldbus or PROFIBUS PA, and selected units display up to four HART® variables from a single device. Units with control functionality combine indication, transmitter/barrier capability, and relay logic to put reliable decisions at the edge.

Individually, the lineup spans loop‑powered field indicators RIA14 (Ex d) and RIA16 (Ex ia) with large LC displays, open‑collector alarm output, and HART transparency; the RIA15 for panel or field use that shows 4–20 mA or up to four HART variables with a very low ≤1 V loop drop; panel‑mount RIA45 and field‑mount RIA46 control indicators that accept up to two universal inputs, power two‑wire transmitters, and add math and limit monitoring with optional SIL; the DIN‑rail RMA42 universal process transmitter with control outputs; and RID14/RID16 fieldbus indicators that listen to up to eight channels on FF or PROFIBUS PA networks. For dedicated level/flow control, the FlexView FMA90 connects two sensors, provides eight digital outputs, and modernizes access with a glove‑operable touch display and built‑in Wi‑Fi in field, panel, or DIN‑rail housings.

E+H process indicators & control units offer faster commissioning, safer operation, and clearer decisions. Local displays and multicolor/alarm indications confirm what the PLC sees and add redundancy; integrated loop power simplifies wiring and powers remote two‑wire devices; and application packages (e.g., differential‑pressure) shorten setup. HART‑transparent indication lets technicians read multiple PVs without breaking the loop, while fieldbus indicators offer listener/function‑block modes to visualize networked values. FlexView’s Wi‑Fi and cybersecurity features enable remote checks at hard‑to‑reach points. Across the range you’ll find optional SIL, marine, and Ex approvals and WHG overfill functions where required—plus linearization, min/max memory, and relay outputs for pump/valve control or simple interlocks.

Typical applications include local readout and limit monitoring at tanks, skids, and pipe runs; front‑panel or cabinet indication in control rooms; and safe displays in Ex areas where the primary instrument’s screen is inaccessible. Plants use the RIA45/46/RMA42 family for signal conversion, linearization, and dP monitoring across filters, heat exchangers, and orifice plates; FlexView FMA90 adds open‑channel flow, storm‑water basins, pump and rake control—especially in water & wastewater utilities and remote sites. Fieldbus RID14/RID16 indicators enhance visibility on FF/PA segments in chemical, power, and marine units. One modular family covers local indication, simple control, and network visualization across industries.

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