Flowserve Logix 3800 Digital Positioner
The NEXT GENERATION, Do It All Digital Positioner
You can have it all: simple configuration and calibration,
powerful diagnostics and reliable performance
This high-precision positioner simplifies installation through easy configuration and calibration. It also facilitates improvements in process up-time, reliability and process throughput. Advanced diagnostics not only identify developing problems in the control valve, but also help guide corrective actions to ensure reduced return-to operation times.
Compatible with linear and rotary valves and actuators, the Logix 3800 digital positioner offers embedded measurement, data reduction, and diagnostic functionalities. Its control system-independent user interface facilitates easy configuration, operation and system diagnostics with a single view
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See more information here at Flowserve.com. (Click to view factory product page)
Video – Logix 3800 Quick Cal Function
WatchVideo – Logix™ 3800 Positioner DIP Switch Setup
WatchVideo – How to mount a Logix™ 3800 Positioner to a Valtek® Mark One™ Linear Valve
WatchVideo – Troubleshooting a Flowserve Digital Positioner
WatchVideo – Logix™ 3800 — Maximize Production and Reduce Operating Costs
WatchTechnical specifications
Air Consumption
Standard relay 0.3 SCFM 60 psi
(Cv 0.008)
Low bleed relay 0.075 SCFM 60 psi
(Cv 0.002)
Output air capacity
Standard relay 18 SCFM 60 psi
(Cv 0.47)
Low bleed relay 18 SCFM 60 p
Temperature range
-67°F to 185°F
Performance Characteristics
Resolution ≤0.25%
Linearity ±0.80%
Repeatability ≤0.05%
Hysteresis ≤1.00%
Deadband ≤0.10%
Sensitivity ≤0.25%
Stability ≤0.40%
Long-term drift ≤0.50%
Supply pressure effect ≤0.20% per
10 psi (0.69 bar)
Safety Certifications
ATEX, IECEx and FM/CSA explosion-proof, intrinsically safe and non-incendive