Section 1: Introduction; Scope; General Information - Emerson Bettis EHO Installation And Operation Manual

Installation and Operation Manual
Part Number: VA001-507-32, Rev. 1

Section 1: Introduction

1.1

Scope

This manual is offered as a guide to be used along with locally approved and safe
practices to install, operate, service and maintain the Bettis EHO Actuator. Carefully
follow the instructions in this manual and make sure you install the actuator correctly
and according to your requirements.
1.2

General Information

1.2.1
The Bettis EHO is a self-contained, quarter-turn, valve actuator that combines proven
technologies from Emerson's Actuation Technologies. The actuator has been designed
for
critical shutdown applications where reliability is crucial. The EHO utilizes a dependable
spring-return actuator for the Fail-safe stroke combined with an integral hydraulic power
pack and electronic control module.
The EHO accepts a wide range of single-phase, three-phase or DC power sources, also
solar panels are available for areas without electrical power. A hydraulic hand pump can
be used to stroke the actuator during commissioning or in the event of an emergency
power loss.
Electronic modules are contained within an explosion proof, IP68 enclosure and all
electronic components are isolated from the customer connection terminals.
The EHO provides a compact design with actuator and control components that have
been field proven for decades in critical service applications.
1.2.2
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Introduction
Overview
Product Attribute
Easy installation – Bettis™ EHO actuator is a totally self-contained system and
designed for compactness and adaptable to new or existing valves.
Bettis™ G-Series hydraulic double-acting or spring-return fail-safe actuator
Shafer™ hydraulic control technology
EIM™ electronics and communication technology
Multiple input power options with either AC or DC
Local lockable Remote/Local/Offline switch
Local open/close/stop switch
Partial stroke test
Fast speed of operation to Fail-safe position if required
Emergency shutdown – independent safety circuits and solenoid valve
Dual sealed Separate Terminal Chamber, allows installation wiring to be
performed or fuses to be replaced without exposing control components to
hostile environmental conditions.
Section 1: Introduction
August 2016
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