Basic Info.
Adjusted Form
Switching Type
Working Type
Straight Trip
Work Temperature
Normal Temperature
Acting Type
Double Acting
Product Name
Samson 3730-3 Hart Valve Positioner
Product Type
Valve Positioner
Communication Protocol
Hart 7 / Hart 03
Material Options
Cast Aluminum / Stainless Steel (AISI 316L)
Safety Certification
Sil 2/3 Compliant
Industry Standards
IEC 60534-6, Vdi/VDE 3845/3847
Diagnostics Function
Expertplus Valve Diagnostics
Mounting Orientation
Any Position (360° Adjustable)
Output Pressure Range
0.2-7 Bar
Ambient Temperature
-40°c to +80°c
Specification
24*16*12cm, 1.5kg
Product Description
Product Description
Samson 3730-3 Valve Positioner Product Overview
The Samson 3730-3 is a high-performance smart electropneumatic valve positioner designed for precise control of pneumatic actuators in industrial automation systems. Combining advanced diagnostics, rugged construction, and flexible communication protocols, it ensures reliability in critical applications such as oil & gas, chemical processing, and power generation.
Core Features
Smart Diagnostics & Communication
- HART 7/03 Protocol integration enables seamless digital communication with control systems, supporting remote configuration and real-time diagnostics.
- EXPERTplus Diagnostics monitors valve performance, detects wear, and provides predictive maintenance alerts via NAMUR NE 107-compliant status messages.
Robust Design
- Material Options: Available in cast aluminum (standard) or stainless steel (AISI 316L) for corrosion resistance in harsh environments.
- IP66 Protection: Dust-tight and water-resistant housing ensures durability in outdoor or high-humidity installations.
Non-Contact Position Sensing
- Eliminates mechanical wear with magnetic angle measurement, ensuring long-term accuracy (±0.5% linearity).
Flexible Actuator Compatibility
- Supports single/double-acting actuators via Type 3710 Reversing Amplifier.
- Adjustable output pressure range (0.2-7 bar) adapts to various actuator sizes.
User-Friendly Operation
- Rotary Pushbutton Interface simplifies parameter configuration and manual valve control.
- 360° Adjustable LCD with selectable viewing direction for readability in any mounting orientation.
Detailed Photos
Product Parameters
| Product Name | Rosemount 644 Temperature Transmitter |
| Product Type | Valve Positioner |
| Model Number | 3730-3 |
| Brand | Samson |
| Communication Protocol | HART 7 / HART 03 |
| Protection Class | IP66 |
| Material Options | Cast Aluminum / Stainless Steel (AISI 316L) |
| Input Signal | 4-20mA DC |
| Energy Type | Electropneumatic |
Packaging & Shipping
Company Profile
KeRui (WeiFang) Automation Equipment Co., Ltd. is specialized in industrial automation instrument development, production and sales, technical services and supporting equipment supply of specialized companies. The main products are flow meters, level meters, temperature meters, pressure meters, electrical meters, thermal meters, programmable controller (PLC), DCS distributed control system, eight series of more than 1,000 specifications. Its products and technologies are widely used in electric power, metallurgy, petrochemical, environ- mental protection, plastics, food,I printing, tobacco, textile, dyeing and other fields.
Our Advantages
Company Advantages of KeRui (WeiFang) Automation Equipment Co., Ltd.
KeRui (WeiFang) Automation Equipment Co., Ltd. is a leading manufacturer and innovator in industrial automation solutions, specializing in pressure transmitters, flowmeters, handheld communicators, valve positioners, and related instrumentation. With decades of expertise and a global reputation for quality, we are committed to delivering cutting-edge products tailored to meet diverse industrial demands. Below are our core competitive advantages:
1. Advanced Technology & Precision Engineering
High-Accuracy Pressure Transmitters: Our pressure transmitters achieve ±0.075% reference accuracy (digital) and ±0.1% (analog), ensuring reliable measurements even in extreme conditions (-40°C to 150°C). Leveraging 18-bit ADC technology, they minimize environmental temperature drift for long-term stability. Smart Flowmeters: Our variable area flowmeters (e.g., ZYZZ series) feature geomagnetic compensation, LCDs, and Exd II CT6 explosion-proof certification, suitable for hazardous environments like oil & gas and chemical plants.Valve Positioners with Auto-Calibration: Equipped with Foundation Fieldbus protocol compatibility, our valve positioners enable automatic zero/span adjustment and reduce commissioning time by 50%, ensuring optimal control loop performance
2. Robust Quality Control & Certifications
ISO 9001 & API Compliance: Adhering to ISO 9001:2015 and API standards, we implement rigorous quality checks from raw material selection to final testing. Durable Construction: Products feature 316L stainless steel, PTFE/PFA coatings, and IP67/IP68 protection, ensuring corrosion resistance and longevity in harsh environments. Global Certifications: Our devices meet ATEX/IECEx, SIL 2/3, and NAMUR NE 21/43 standards, making them compatible with international safety and regulatory requirements
3. Customization & Versatility
Tailored Solutions: We offer custom sensor matching (e.g., RTD, thermocouple) and output signal customization (4-20mA, HART, PROFIBUS) to align with specific application needs Wide Application Coverage: Products are designed for industries including oil & gas, water treatment, chemical processing, and HVAC systems, with flowmeters supporting flow rates from 20Nm³/h to 5000Nm³/h Multi-Function Handheld Communators: Our handheld devices provide intuitive configuration, real-time diagnostics, and PID control integration, streamlining field operations.
4. Innovation & R&D Excellence
In-House R&D Team: With 6+ dedicated engineers, we continuously innovate in materials (e.g., H-alloy sensors) and software (e.g., predictive maintenance algorithms).Smart Features: Products integrate self-diagnostic alerts (e.g., sensor drift detection) and IoT readiness, enabling seamless integration into Industry 4.0 systems.
5. Efficient Production & Global Service
Large-Scale Manufacturing: Operating 7 production bases with 5,000+ annual capacity, we ensure fast delivery and cost-effectiveness Comprehensive Support: Our 51% localized overseas teams provide 24/7 technical assistance, onsite training, and spare parts supply Warranty & Traceability: All products come with a 1-year warranty and full lifecycle traceability, backed by digital documentation for easy maintenance.
6. Sustainable & User-Centric Design
Energy Efficiency: Devices like low-power flowmeters (3.6V lithium battery option) reduce operational costs
Ergonomic Interfaces: Features like dual-indication displays (LCD + analog) and WAGO spring-clamp terminals simplify installation and reduce downtime.
After Sales Service
Q: How long will you to 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's time.
Q: How about your package?
A: Do not worry about the package; we have a lot of experience packing.
Q: How about the payment terms?
A: You can choose T/T.
Q: What is the MOQ?
A: 1 PC.
Q: Can I get a lower price if I order large quantities?
A: Yes, cheaper prices with larger orders.
Q: After sales and warranty?
A: We provide a one-year warranty and lifetime technical support services
