The Flowserve Logix 3200MD is a two-wire, 4-20 mA digital valve positioner that provides precise stem positioning for both double-acting and single-acting actuators in linear or rotary configurations. Fully powered by the input signal, it supports HART protocol for bidirectional communication and is configurable via the local interface, ValveSight software, or HART handheld communicators. It employs a two-stage control algorithm (inner-loop spool control and outer-loop stem position control) with electronic characterization, eliminating mechanical cams.
| Parameter | Value |
|---|---|
| Power Supply | Two-wire, 4-20 mA, 10.0–30.0 VDC |
| Compliance Voltage | 10.0 VDC @ 20 mA |
| Minimum Operating Current | 3.6 mA (without AO); 3.85 mA (with AO) |
| Deadband / Repeatability | <0.1% / <0.05% full scale |
| Linearity | <0.5% (rotary); <0.8% (sliding stem) |
| Air Consumption / Capacity | <0.3 SCFM / 12 SCFM @ 60 psi (4 bar g) |
| Operating Temperature | –40 to 176 °F (–40 to 80 °C) |
| Housing | Cast powder-painted aluminum or stainless steel |
| Weight | 8.3 lb (3.9 kg) aluminum; 20.5 lb (9.3 kg) SS |
| Communications | HART Protocol |
Control of linear Mark One valves, standard and optional Valtek rotary valves, and NAMUR-compatible rotary actuators in process industries requiring precise positioning, diagnostic capability, and hazardous-area compliance.
How is calibration performed?
Use the local QUICK-CAL button (Auto or Jog mode) or ValveSight/HART 375.
What air quality is required?
ISA 7.0.01 (dew point ≥18 °F below ambient, particles ≤5 µm, oil ≤1 ppm).
Can it operate in digital command mode?
Yes; the 4-20 mA signal can be ignored in favor of HART digital setpoint.
What is the fail-safe behavior?
Determined by actuator tubing and spring; positioner diagnostics monitor ability to reach fail-safe.
Phone/WeChat/WhatsApp: +8613916209596
Email: svetama@gbsxj.com
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