Advanced Samson 3730-3 Electropneumatic Positioner with Hart Technology

• Customization: Available
• Customized: Customized
• Certification: CE
• Model NO.: Samson 3730-3
• Power: Pneumatic
• Pressure: High Pressure
• Brand: Samson
• Work Temperature: High Temperature
• Material: Stainless Steel
• Place of Origin: China
• Brand Name: Samson
• Model Number: 3730-3
• Warranty: 1 Year
• Product Name: Valve Positioner
• Input Signal: 4-20 Ma (2-Wire)
• Supply Pressure Range: 1.4 to 7 Bar
• Output Pressure Range: 0 to 100% of Supply Pressure
• Ambient Temperature Range: -40°c to +80°c
• Protection Class: IP66/NEMA 4X
• Housing Material: Aluminum Alloy with Polyurethane Coating
• Connection Type: G1/2" or NPT1/2"
• Air Consumption: ≤0.6 Kg/H at 5 Bar
• Mounting Orientation: Vertical or Horizontal
• Weight: 2.5 Kg
• Transport Package: Original
• Specification: 20cm*21cm*22cm
• Trademark: Samson
• Origin: China
• HS Code: 9032810000
• Production Capacity: 10000pieces/Year
• Package Size: 20.00cm * 21.00cm * 22.00cm
• Package Gross Weight: 2.500kg

Product Description

Product Overview

The Samson 3730-3 Electropneumatic Positioner is a high-precision control device designed to optimize the performance of pneumatic actuators in industrial automation systems. Engineered for reliability and adaptability, it converts electrical control signals from process controllers (e.g., 4–20 mA) into precise pneumatic output pressures, ensuring accurate valve positioning. The positioner is compatible with a wide range of linear and rotary actuators, making it suitable for applications in industries such as oil and gas, chemical processing, power generation, and water treatment. Its robust construction and advanced diagnostics capabilities enable seamless integration into both new installations and legacy systems, supporting process efficiency and operational safety.

Advanced Technology and Design

The 3730-3 incorporates cutting-edge features such as adaptive control algorithms, which automatically adjust to changing process conditions, minimizing overshoot and stabilizing control loops. Its non-contact, wear-free sensor technology ensures long-term accuracy and reduces maintenance needs. The device also supports HART® communication, allowing for real-time parameter configuration, remote monitoring, and integration with asset management systems. The modular design includes a user-friendly interface with a backlit display and intuitive menu navigation, simplifying setup and troubleshooting. Additionally, its IP66/IP67-rated enclosure provides exceptional resistance to dust, moisture, and extreme temperatures (-40°C to +80°C), ensuring reliable operation in harsh environments.

Key Performance Advantages

A standout advantage of the 3730-3 is its exceptional precision, achieving positioning accuracy of up to ±0.1% under steady-state conditions. This is complemented by its fast response time, which enhances control loop dynamics and reduces process variability. The positioner's low air consumption technology minimizes compressed air usage, lowering operational costs and energy consumption. Its adaptive tuning capability eliminates the need for manual adjustments, even when actuator characteristics change due to wear or load variations. Furthermore, the integrated diagnostics tools, such as stroke duration analysis and leak detection, enable predictive maintenance, reducing downtime and extending equipment lifespan.

Operational and Sustainability Benefits

The Samson 3730-3 is designed for sustainability and ease of use. Its energy-efficient operation aligns with global standards for reduced carbon footprints, while its compatibility with SIL 2/3 safety certifications ensures compliance with stringent industry regulations. The tool-free installation and "Auto Setup" feature allow for rapid commissioning, minimizing labor costs and human error. By optimizing valve performance and reducing air waste, the positioner supports long-term cost savings and environmental stewardship. Samson's global service network further enhances value, offering technical support, training, and lifecycle services to maximize system uptime and ROI. These features make the 3730-3 a future-proof solution for industries prioritizing precision, reliability, and sustainability.

Specification

Parameter	Specification
Input Signal	4-20 mA (3-wire)
Supply Pressure	1.4 - 7 bar (20 - 100 psi)
Ambient Temperature	-40°C to +80°C (-40°F to +176°F)
Enclosure Rating	IP66/NEMA 4X
Materials	Aluminum housing, stainless steel fittings
Mounting Position	Any orientation
Air Consumption	< 0.12 kg/h (0.26 lb/h) at steady state
Repeatability	±0.5% of span
Weight	Approx. 2.5 kg (5.5 lbs)
Certifications	ATEX, IECEx, SIL 2

Installation Tutorial

Step	Action	Tools/Notes
1	Prepare tools and materials	Screwdriver, wrench, mounting brackets, pneumatic tubing, electrical cables
2	Inspect positioner for damage	Check housing, connections, and internal components
3	Mount on actuator	Align shaft; tighten mounting bolts (5-7 Nm torque)
4	Connect electrical wiring	4-20 mA signal cables; 20-30 V DC power supply; polarity-aware connections
5	Install pneumatic connections	1/4" NPT fittings; 1.4-7 bar air supply; use clean/dry air source
6	Configure parameters	Set stroke range via adjustment screws; reference manual for calibration
7	Perform initial commissioning	Apply control signal; verify full stroke movement; adjust zero/span as needed
8	Check for leaks	Soap solution or leak detector applied to all pneumatic joints
9	Secure protective cover	Ensure IP65 rating maintained; fasten enclosure screws
10	Final functional test	Cycle through 0%, 50%, 100% positions; verify stable operation

Packing & Delivery

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.