Digital Positioners - Logix 3800

Compatible with linear and rotary valves and actuators, Logix 3800 digital positioner delivers high reliability in tough environments. It provides unparalleled modularity and versatility within a single unit. Its ability to handle double- or single-acting, linear and rotary applications reduces inventory and operating costs. Installation is simplified with an innovative, one-button quick calibration feature.

Product Highlights

Industries

General Industry
Chemicals
Water
Oil & Gas
Power

Industry Sectors

Pulp & Paper
Mining
Steel & Primary Metals
Food & Beverage
Other Industries
Basic (Organic & Inorganic)
Specialty (Fine & Consumer)
Biofuels
Pharmaceutical
Water
Waste Water
Upstream Exploration & Production
Midstream Transportation
Downstream Processing
Conventional Steam
Geothermal
Combined Cycle
Concentrated Solar Power (CSP)

Standards

SIL 3 Capable
ATEX/IECEx

Operating Parameters

Air Cap: 30.6 Nm3/h @ 4.1 bar (18 SCFM @ 60 psi)

Air Con: 0.082 to 0.637 Nm3/h @ 4.1 bar (0.048 to 0.375 SCFM @ 60 psi)

Repeatability: ≤0.25%

Temp: -52°C to 85°C (-61.6°F to 185°F)

Design Range

Materials: Copper free Aluminum, Stainless Steel

Features and Benefits

Robust and reliable
Trouble-free performance in demanding applications is ensured by the shielded, dual-element, non-contact, magneto-resistive position sensor and temperature- compensated, dual-poppet pneumatic relay. The rugged, modular design provides protection from dirt and water ingress (IP-66), impact and vibration.

Easy configuration and calibration
Innovative quick calibration feature greatly simplifies commissioning. One-button setup automatically configures the zero, span and gain of the positioner for most valves in less than 60 seconds.

Predictive diagnostics
Powered by ValveSight DTM, the Logix 3800 has five on-board pressure sensors that enable operators to identify and assess the severity of developing problems so action can be taken before a critical event.

Application versatility
Broad application versatility with industry-leading communication technologies, including analog, HART, Foundation Fieldbus, 4-20 or discrete I/O signals. Optional module to remotely locate the positioner from the control valve. Compatible with a variety of valve and actuation configurations

Increased safety
Intrinsically safe, non-incendive and explosion-proof design from -52°C to 185°C (-62°F to 365°F) ensures safe, reliable operation in hazardous conditions. Certified for use in explosion-proof Exd IIC hazardous locations.

Greater air capacity
Up to 80% more air capacity with minimal air consumption is made possible by the double-poppet technology.

Video

Logix™ 3800 — Maximize Production and Reduce Operating Costs

Logix™ 3800 Positioner Quick Calibration

This video walks you through the quick and easy steps to calibrate the Logix 3800 positioner. One-button setup automatically configures the zero, span and gain of the positioner for most valves in less than 60 seconds.

Logix™ 3800 Positioner DIP Switch Setup

This video reviews the settings for the 8 DIP switches on the Logix 3800 positioner.

How to Mount a Logix™ 3800 Positioner to a Valtek^® Mark One™ Linear Valve

This video shows you how easy it is to mount a Logix 3800 digital positioner to a Valtek Mark One linear control valve. It also shows how easy it is to retrofit valves fitted with older Logix 3000-model positioners with the new Logix 3800 positioner by using an adapter bracket that enables use of the existing mounting bracket.

How to Mount a Logix™ 3800 Positioner to a Standard Valtek® Rotary Valve

In this video, you will learn how to mount a Logix 3800 digital positioner to a Valtek rotary valve that is configured with a Valtek VR actuator.

How to mount a Logix™ 3800 Positioner to an Automax™ Rack and Pinion Actuator

This video shows you how easy it is to mount a Logix 3800 digital positioner to an Automax rotary actuator using the Namur standard mounting configuration.

How to mount a Logix™ 3800 Positioner to a Flowserve® FlowAct® actuator

This video shows you how easy it is to mount a Logix 3800 digital positioner to a Flowserve Flowact single-acting, pneumatic diaphragm actuator. It explains the mounting differences between air-to-open and air-to-close configurations using a direct mount block.