High Quality Flowserve Logix 520MD Digital Valve Positioner HART 4-20mA Input Precise Control

The Flowserve Logix™ 520MD+ is a next-generation two-wire 4-20 mA digital valve positioner with full HART® 7 communication. It delivers precise stem positioning for both single- and double-acting linear or rotary actuators while providing powerful ValveSight™ diagnostics, modular expansion cards, and local LCD push-button operation — all powered directly by the control signal.

• Full HART 7 communication with ValveSight DTM for advanced diagnostics
• Large LCD display and 4-button local interface for quick setup
• One-button QUICK-CAL stroke calibration (typically < 60 seconds)
• Modular Multi-Function Card (AO + DO + DI) and optional V-to-I or limit switch cards
• High-flow spool or poppet pilot relay (up to 30.6 Nm³/h @ 4.1 bar)
• Live manual gain tuning and customizable 21-point characterization
• Intrinsically safe, explosion-proof, and SIL-capable designs

Ideal for oil & gas, petrochemical, power generation, refining, and any facility requiring HART diagnostics, partial-stroke testing, or SIL-rated safety loops.

Q: How fast is QUICK-CAL?
A: Typically completes full stroke calibration in under 60 seconds with one button press.

Q: Can I run ValveSight diagnostics remotely?
A: Yes — full HART 7 access via DTM, handheld, or host system.

Q: What is the warranty?
A: Standard Flowserve 3-year warranty (extended options available).

Phone/WeChat/WhatsApp: +8613916209596

Email: svetama@gbsxj.com

• Logix 510+ (non-HART version)
• ValveSight DTM Software Suite
• Multi-Function Card (AO/DO/DI)
• Remote Mount Kit (up to 100 ft)