Original and New Samson 3730-3 Electropneumatic Positioner with Enhanced Control Features

• Customized: Customized
• Certification: CE
• Power: Pneumatic
• Model NO.: Samson 3730-3
• Pressure: High Pressure
• Brand: Samson
• Work Temperature: High Temperature
• Material: Stainless Steel
• Place of Origin: Germany
• Brand Name: Samson
• Model Number: 3730-3
• Warranty: 1 Year
• Product Name: Valve Positioner
• Motor Type: AC, DC
• Structure: Control
• Temperature of Media: Medium Temperature
• Input Signal: 4–20 Ma with Hart
• Supply Pressure: 1.4–7 Bar (20–100 Psi)
• Output Pressure: 0–100% of Supply Pressure
• Air Consumption: ≤0.12 Kg/H (at 1.4 Bar)
• Ambient Temperature: -40°c to +80°c (-40°f to +176°f)
• Certifications: ATEX, Iecex, FM
• MOQ: 1PC
• Transport Package: Original
• Specification: 30cm*20cm*30cm
• Trademark: Samson
• Origin: Germany
• HS Code: 9032810000
• Production Capacity: 10000pieces/Year

Product Description

Samson 3730-3 Electropneumatic Positioner

The Samson 3730-3 Electropneumatic Positioner is a precision control device designed for automated valve actuation in industrial process systems. Developed by Samson AG, a globally recognized leader in automation and valve technology, this positioner integrates advanced electropneumatic control with digital communication capabilities to optimize valve performance across industries such as oil and gas, chemical processing, power generation, and water treatment. The 3730-3 represents a refinement of Samson's decades-long expertise in valve positioning, combining reliability with adaptability to meet the evolving demands of modern process automation. Its development aligns with industry trends toward smart instrumentation, energy efficiency, and seamless integration into digital control architectures, making it a critical component for industries prioritizing process accuracy and operational safety.

Engineered for high-precision control, the Samson 3730-3 leverages microprocessor technology to convert electrical control signals into precise pneumatic outputs, ensuring accurate valve positioning even under dynamic process conditions. Key innovations include adaptive control algorithms that automatically compensate for valve hysteresis and friction, as well as a robust IP66/NEMA 4X housing for durability in harsh environments. The device supports multiple communication protocols, such as HART, PROFIBUS, and Foundation Fieldbus, enabling real-time diagnostics and integration with distributed control systems (DCS) or IoT platforms. Its user-friendly interface, featuring a local LCD display and push-button controls, simplifies configuration and troubleshooting, while optional SIL 2/3 certification underscores its suitability for safety-critical applications. These features reflect Samson's commitment to balancing technical sophistication with operational practicality.

In the market, the 3730-3 positions itself as a versatile solution for both linear and rotary valves, addressing challenges like stem vibration, temperature extremes, and variable supply pressures. Its modular design allows customization with accessories like solenoid valves or position transmitters, catering to diverse industrial scenarios. The product's competitive edge lies in its low air consumption, reduced maintenance requirements, and compliance with international standards such as IEC 61508 and NAMUR NE 107. Case studies in refinery flow control and wastewater treatment highlight its ability to minimize downtime and enhance process repeatability. By aligning with Industry 4.0 principles, the 3730-3 not only improves valve performance but also contributes to energy savings and predictive maintenance strategies, reinforcing Samson's reputation as an innovator in sustainable automation solutions.

Specification

Applications

1.Chemical Processing

2.Oil and Gas Production/Refining

3.Power Generation (Thermal, Nuclear)
4.Water/Wastewater Treatment
5.Pharmaceutical Manufacturing

6.Food and Beverage Industry

7.Pulp and Paper Production

8.HVAC Systems

9.Petrochemical Plants

10.Marine/Shipbuilding Applications

11.Iron and Steel Industry

12.Automotive Manufacturing Processes

Key Attributes

Model: 3730-3

Type: Electropneumatic Positioner
Input Signal: 4–20 mA with HART
Supply Pressure: 1.4–7 bar (20–100 psi)
Output Pressure: 0–100% of supply pressure

Air Consumption:≤0.12 kg/h (at 1.4 bar)

Ambient Temperature:-40°C to +80°C (-40°F to +176°F)

Housing Material:Aluminum (painted)

Technical Specifications

(Custom configurations available upon request.)

Model	3730-3
Input Signal	4-20 mA
Supply Pressure	1.4 to 7 bar
Air Consumption	0.3 kg/h (at 1.4 bar)
Connection Nominal Size	1/2" NPT
Operating Temperature	-20 to +80 °C
Accuracy	±0.5%
Repeatability	±0.2%
Pressure Range	0.2 to 6 bar
Enclosure Rating	IP66/IP67
Material Housing	Aluminum
Weight	2.5 kg
Certifications	ATEX, IECEx, CE

After Sales Service

1. Technical Support: 24/7 global assistance via phone for troubleshooting, configuration, and operational guidance.

2. On-site Service: Qualified technician dispatch for calibration, repair, or maintenance within 48 hours (subject to regional availability).

3. Warranty Coverage: 12-month limited warranty including free replacement of defective components, excluding wear parts and improper use cases.

Company Profile

KeRui (weifang) Automation Equipment Co., Ltd.

KeRui (weifang) Automation Equipment Co., Ltd. specializes in industrial automation instrument development, production and sales, technical services, and supportingequipment supply of specialized companies. The main products are flow meters, level meters, temperature meters, pressure meters, electrical meters, thermal intelligent meters, programmable controllers (PLC), DCS distributed control systems,and eight series of more than 1,000 specifications. Its products and technologies are widely used in electric power, metallurgy, petrochemicals, environmental textile, dyeing, and other fields.protection, plastics, food, printing, tobacco,textile, dyeing, and other fields.

Why Choose Us?

Other Products

OEM/ODM capabilities
Competitive pricing & bulk discounts
Fast shipping & customs clearance support

Transmitter
Flowmeter
Level meter
Pressure Gauge
Field Communicator

FAQ

Q: How long will you give me the reply?

A: We will reply to you as soon as we see the information

 

Q: What is the delivery time?

A:The products in stock will be shipped after receiving the payment, and the products that

need to be ordered are subject to the factory time.

 

Q: How about your package?

A: Do not worry about the package, we have rich experience in packing.

 

Q: How about the payment terms?

A:You can choose T/T.

 

Q: What is the MOQ?

A:1PC.

 

Q: Can l get a lower price if l order large quantities?

A: Yes, cheaper prices with more bigger size orders.

 

Q:After sales and warranty?

A: We provide one year warranty lifetime technical support services.