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Bettis EHO Electro-Hydraulic Operator (Smart)
Opérateur électrohydraulique Bettis (Smart)
Bettis EHO Electro-Hydraulic Operator (Smart)
DCM link EHO
The Bettis Smart Electro-Hydraulic Operator(EHO) is a self-contained electro-hydraulic actuator designed to actuate quarter-turn valves.
It is designed to provide fail-safe actuation for Emergency Shut Down(ESD) valves. The Bettis Smart EHO has advanced diagnostic capability and can be connected to DCMlink for remote monitoring.

Electro Hydraulic Operator Bettis EHO Schematic Overview

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Electro Hydraulic Operator Bettis EHO Setup and Startup Procedures

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Bettis EHO Electro-Hydraulic Operator (Smart)

Specs

Certifications
FM, ATEX, IECEx, PESO, CCOE, CSA, SIL 3
Operating Pressure
up to 3,000 psi
Operating Temperature
Standard -20°F to +140°F (-29°C to +60°C). Optional temperature -40°F to +140°F (-40°C to +60°C).
Power Source
Electro-Hydraulic
Product Type
Electro-Hydraulic Actuator
Torque/Thrust
1,264 to 707,696 in-lbs
Valve Type
Ball, Butterfly, Plug, Triple Offset

Features

  • Equipped with a full‑color LCD (TFT) Local Display Module that shows valve position, alarms, configuration menus, temperature, and live diagnostics.
  • Provides real‑time performance insights, including valve torque curves, PST curve, operating data, alarms, and full data‑logger records through DCMlink.
  • Offers over 25 built‑in alerts and alarms, complete with troubleshooting guidance displayed directly on the HMI.
  • Supports Modbus, HART (HART7), and FOUNDATION Fieldbus, ensuring compatibility with plant‑wide control and asset‑management systems.
  • Certified for ATEX Ex d IIB T4, IECEx Ex d IIB T4, CSA, and FM hazardous environments.
  • Achieves SIL 3 (Smart EHO, spring‑return) and SIL 2 (standard EHO) safety levels per IEC 61508 / IEC 61511.
  • Designed for low power consumption, enabling reliable operation at remote sites, with optional solar‑power capability.
  • Optional accumulator provides stored hydraulic energy, enabling multiple actuator operation during power loss and supporting modulating control when required
  • Utilizes a dependable spring-return actuator for the fail-safe stroke combined with an integral hydraulic power pack and electronic control module
  • Designed as an emergency shutdown actuation solution to stop process flow upon the detection of a command signal or loss of power, protecting personnel, equipment, and the environment
  • Consistently operates in challenging environments, hostile environments, and when power is challenged
  • Environmental Protection: Control enclosure: IP68, Hydraulic actuator: IP67M, Motor: IP68