Samson 3731

The Samson Type 3731 Electro-Pneumatic Positioner Series is a highly advanced digital instrument specifically engineered for industrial applications demanding Explosion-Proof (Ex d) devices. This series delivers premier control performance and diagnostic functionality standard, making it the superior choice for hazardous environments.
The Samson 3731 series includes variants for major industrial communication protocols: HART (3731-3) and Foundation Fieldbus (3731-5). These positioners set the industry standard through innovative details, including safe and fast integral attachment, simplifying installation on both linear and rotary actuators.

The Samson 3731 combines robust safety features with high-tech usability:
1. Safety, Compatibility & Efficiency
Explosion-Proof Enclosure: The robust Ex d housing allows for local configuration and operation even within the hazardous environment, eliminating the need for hot work permits or specialized field devices.
Universal Actuator Fit: Attaches seamlessly to both linear and rotary actuators, regardless of fail-safe action or moving direction.
Low Air Consumption: Features exceptionally low steady-state air consumption (less than 0.06 scfm across all supply pressures), contributing significantly to reduced operating costs.
Versatile Application: Capable of handling both Modulating Control and On/Off applications with a single device.

2. Simplified Operation & Parameterization
Convenient One-Knob Operation: Features intuitive one-knob operation for quick, simple navigation and configuration in the field.
Automatic Setup: Provides automatic start-up and tuning of parameters, drastically reducing commissioning time and minimizing potential human error.
Full Function Parameterization: Allows comprehensive characterization, including setting the reference variable, travel range, and process characteristics (e.g., linear and equal percentage), along with tuning PID control coefficients.
3. Industry-Leading Diagnostic Capabilities
The Samson 3731 offers extensive diagnostic functions critical for predictive maintenance and asset management:
Advanced Testing: Supports full-function diagnostics including Static Characteristic Testing, Partial Stroke Testing (PST), and Full Stroke Testing.
Data Logging: Features continuous status message logging and data logging, including travel setpoint deviation and cycle counter histograms.
Performance Monitoring: Provides detailed insights through trending of end positions and analysis of drive signals (steady and hysteresis).

• Competitive pricing backed by multi-source supply channels
• Short lead times with guaranteed on-time delivery
• One-year warranty on all products
• Professional engineering support for selection and troubleshooting
• Multiple logistics choices: express, air, sea, and consolidated shipping
• Secure, reinforced packaging for safe transportation
• Years of experience supplying domestic and international clients, including other distributors

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