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.
| 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 |
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.
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.
Phone/WeChat/WhatsApp: +8613916209596
Email: svetama@gbsxj.com
Flowserve Valtek control valves, Logix 3200/3400 series positioners, and complementary Flowserve actuators and seals.
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