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High Quality Samson 3730 3731 Series Valve Positioner Industrial Process Control System Price

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1750-2000$ per set
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High Quality Samson 3730 3731 Series Valve Positioner Industrial Process Control System Price
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Specificaties
Communicatieprotocol: HART 7 (3730-3/3731-3)
Explosiebestendig: 3730=Nee; 3731=Ja (ATEX/IECEx Ex d)
Ingangssignaal: 4-20 mA tweedraadssysteem (300 Ω elektrische belasting)SAMSON AG
Montage compatibiliteit: Lineaire/roterende regelkleppen (NAMUR/VDI/VDE)SAMSON AG
Beschermingsklasse: IP 56/66, NEMA 4 (aluminium behuizing)
Kenmerkende functie: Basis (10) / EXPERTplus (21) diagnose
Ventielfeedback: Optionele 4-20 mA positiefeedback (001-modellen)
Bedrijfstemperatuur: -40°C tot +80°C (groot temperatuurbereik)
Basis informatie
Merknaam: Samson
Modelnummer: 3730 3731
Betalen & Verzenden Algemene voorwaarden
Verpakking Details: kartonnen/houten kistverpakking
Levertijd: 6-8 weken
Betalingscondities: T/T
Levering vermogen: 800 reeksen per jaar
Productomschrijving
Samson 3730 & 3731 Valve Positioner Product Introduction
Product Overview

The Samson 3730 and 3731 are high-performance electro-pneumatic valve positioners designed for precise control of linear and part-turn actuators in industrial process systems. These devices convert 4-20 mA electrical input signals into proportional pneumatic output pressure to accurately position control valves. They deliver reliable performance in demanding environments, with robust construction and advanced diagnostic capabilities.

The 3730 model is optimized for linear actuators, while the 3731 is engineered for part-turn valves like ball, butterfly, and plug valves. Both integrate seamlessly with HART communication for remote monitoring and configuration.

Features
  • Dual Model Compatibility: 3730 for linear valves, 3731 for part-turn valves to suit diverse industrial applications.
  • HART Communication: Enables remote diagnostics, parameter adjustment, and performance monitoring for predictive maintenance.
  • High Positioning Accuracy: ±0.25% of full scale for precise valve control and stable process regulation.
  • Robust Environmental Rating: IP66/IP67 enclosure ensures reliable operation in harsh conditions, including dust, moisture, and extreme temperatures.
  • Automatic Calibration: One-button calibration simplifies setup and reduces installation time.
  • Advanced Diagnostics: Real-time data on valve performance, actuator health, and air supply status to prevent unplanned downtime.
  • Wide Operating Range: Works with supply pressures from 0.2 to 0.7 MPa (2 to 7 bar) and temperatures from -40°C to +85°C.
Technical Specifications
Parameter Details
Input Signal 4-20 mA DC, HART 7 compatible
Supply Pressure 0.2 to 0.7 MPa (2 to 7 bar)
Output Pressure Range 0.02 to 0.6 MPa (0.2 to 6 bar)
Positioning Accuracy ±0.25% of full scale
Enclosure Protection IP66 / IP67
Ambient Temperature -40°C to +85°C (-40°F to +185°F)
Communication Protocol HART 7
Mounting Standard IEC 60534-6-1 / VDI/VDE 3845
Certification ATEX, IECEx, CSA, FM (hazardous area approval)
Applications

The Samson 3730 and 3731 positioners are ideal for critical process control in industries requiring high reliability:

  • Oil & Gas: Refining, pipeline systems, and offshore production platforms
  • Petrochemical & Chemical: Polymer manufacturing, specialty chemical processing, and continuous production plants
  • Power Generation: Thermal power plants, combined-cycle facilities, and waste-to-energy systems
  • Pulp & Paper: Digester control, bleaching processes, and stock preparation
  • Water & Wastewater: Treatment plants, pumping stations, and distribution networks
  • Mining & Metals: Mineral processing, smelting operations, and material handling systems
FAQ
Q: What is the difference between Samson 3730 and 3731?

A: The 3730 is designed for linear actuators (globe, control valves), while the 3731 is optimized for part-turn actuators (ball, butterfly, plug valves).

Q: Can these positioners be used in hazardous areas?

A: Yes, both models are ATEX, IECEx, and CSA certified for use in Zone 1/21 and Zone 2/22 hazardous locations.

Q: How often do I need to calibrate the positioner?

A: With automatic calibration, routine calibration is typically only needed every 2–3 years or after maintenance.

Q: Is HART communication required for operation?

A: No, the positioners operate with a basic 4-20mA signal, but HART unlocks remote configuration and diagnostic capabilities.

Contact Us

For inquiries, technical support, or to request a quote, reach out to us directly:

wechat/what's app/phone number:+8613472860702

Our team of industrial automation experts is ready to assist with product selection, configuration, and after-sales support.

Related Products
  • Samson 3271 Control Valves
  • Samson 4763 Pneumatic Valves
  • Samson 3725 Electropneumatic Positioners
  • Samson Valve Positioner Accessories (Mounting Kits, Sensors)
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F
FLOWSERVE MARK ONE Linear Globe Angle Control Valve Spring Cylinder Valve Pneumatic Actuator
Switzerland Dec 1.2025
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