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    Home  /  Applications  /  Actuator Feedback Systems
    APP-02

    Actuator Feedback Systems

    Actuator feedback systems provide closed-loop confirmation that a valve actuation has occurred — detecting end-of-travel position for both open and closed states, and supporting partial stroke test...

    Overview

    What This Application Involves

    Actuator feedback systems provide closed-loop confirmation that a valve actuation has occurred — detecting end-of-travel position for both open and closed states, and supporting partial stroke testing requirements for safety-critical valves. Without reliable feedback, operators cannot confirm that a command has been executed subsea. DepthLink engineers position sensors, switch assemblies, and connector interfaces specifically for hydraulic actuator applications — from single-acting spring-return actuators to dual-acting configurations on larger bore valves.
    Key Challenges

    What Engineers Face in This Environment

    01 / CHALLENGE
    End-of-Travel Detection Accuracy

    Actuator feedback requires sensors that reliably distinguish between fully open, fully closed, and intermediate positions — under operating conditions that include hydrostatic pressure, vibration from flow, and thermal cycling. DepthLink's reed switch and Hall-effect sensor assemblies are specified with the actuation travel profile to ensure consistent switching at the correct position.

    02 / CHALLENGE
    Partial Stroke Test Compatibility

    Safety-critical valves on production systems are increasingly required to demonstrate partial stroke capability without interrupting production. Feedback systems must resolve valve position to within a defined percentage of full travel. DepthLink can supply sensor assemblies with the resolution and linearity required to support partial stroke test regimes.

    03 / CHALLENGE
    Interface Compatibility with Control Systems

    Actuator feedback signals must integrate cleanly with the subsea control module or surface SCADA system. DepthLink reviews the interface requirements — signal type, voltage levels, connector standard, and cable specification — before specifying, to ensure the delivered assembly connects without modification at either end.

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