Flowserve Logix 3800 Digital Positioner with ASCO Solenoid Valve Precision Control Package
Product Overview
The Flowserve Logix 3800 Digital Positioner is a high-precision, modular digital valve positioner engineered to maximize production while minimizing operating costs in demanding process industries. Compatible with both linear and rotary valves and actuators, it delivers simple configuration, powerful diagnostics, and long-lasting reliability in tough environments such as oil & gas and chemical applications. Its control-system-independent interface enables configuration, operation, and diagnosis from a single view.
Key Features
- One-button Quick-Cal setup that automatically configures zero, span, and gain in less than 60 seconds for most valves.
- Rugged SIL 3-capable modular design with IP66 protection, shielded dual-element non-contact magneto-resistive position sensor, and temperature-compensated dual-poppet pneumatic relay.
- Up to 80% greater air capacity with minimal consumption via double-poppet technology.
- Advanced predictive diagnostics using five pressure sensors (supply pressure, friction, pneumatic leak, fail-safe position error, and backlash warnings).
- Broad communication options: analog, HART, Foundation Fieldbus, plus optional discrete I/O and remote-mount capability.
- Intrinsically safe, non-incendive, and explosion-proof ratings for hazardous locations.
- Position-insensitive modular design allowing direct VDI/VDE mounting without external tubing.
Technical Specifications
| Parameter | Value |
|---|---|
| Resolution | < 0.25% |
| Linearity | ±1.25% |
| Repeatability | < 0.25% |
| Hysteresis | ≤ 1.0% |
| Deadband | < 0.25% |
| Sensitivity | < 0.25% |
| Stability | ≤ 0.4% |
| Long-Term Drift | < 0.5% |
| Supply Pressure Effect | < 0.5% |
| Output Air Capacity | 18 SCFM @ 60 psi (standard or low-bleed relay) |
| Air Consumption | 0.3 SCFM (standard) / 0.075 SCFM (low-bleed) @ 60 psi |
| Operating Temperature | –55 °C to 85 °C (–67 °F to 185 °F) |
| Safety Certifications | ATEX, IECEx, FM/CSA (explosion-proof, intrinsically safe, non-incendive), SIL 3 capable |
| Communications | HART, Foundation Fieldbus, analog |
Applications
Oil & gas production and refining, chemical processing, power generation, water treatment, and any severe-service control-valve application requiring high reliability, predictive diagnostics, and hazardous-area certification.
Frequently Asked Questions
Q: How long does calibration take?
A: Most valves complete Quick-Cal in under 60 seconds; the first calibration also performs a full signature.
Q: Can it be used with natural gas?
A: Yes, with the natural-gas model (sweet gas only) and proper venting to a safe location.
Q: Is remote mounting possible?
A: Yes, an optional remote-mount module is available.
Contact Us
Phone/WeChat/WhatsApp: +8613916209596
Email: svetama@gbsxj.com
Related Products
Flowserve Valtek control valves, Logix 3200/3400 series positioners, and complementary Flowserve actuators and seals.
Get in Touch
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