The Type 3730 electro-pneumatic positioner series is a versatile option that is suitable for general industrial applications. SAMSON has designed this series to include several different model versions, ensuring that it can meet the needs of any end user or process requirement. Two basic control positioners that are available are the 3730-0 and 3730-1.
For those who require advanced functionality, the 3730-2 positioner model is an excellent choice. This model includes full function parameterization and advanced diagnostics. Beyond the 3730-2, SAMSON has introduced communication protocols such as HART (3730-3), Profibus (3730-4), and Foundation Fieldbus (3730-5). Full function parameterization allows users to fully characterize the reference variable, travel range, characteristic (i.e. linear and equal percentage), and performance characteristics (i.e. PID control coefficients).
The advanced diagnostics available in the Type 3730 electro-pneumatic positioner series include status message logging, data logging, histograms (travel setpoint deviation and cycle counter), drive signals (steady and hysteresis), end position trending, static characteristic testing, partial stroke testing, and full stroke testing. With these advanced features, users can gain a much deeper level of insight regarding the performance of their processes.
The Electropneumatic positioner with HART® communication is now available in the market as SAM DIGITAL READY. It comes with a die-cast aluminum or stainless steel housing, allowing attachment to linear actuators according to IEC 60534-6, VDI/VDE 3847, or SAMSON integral attachment, as well as attachment to rotary actuators according to VDI/VDE 3845. Additionally, attachment to double-acting actuators with Type 3710 Reversing Amplifier is also possible.
The positioner also features integrated EXPERTplus diagnostics for control valves and can be mounted in any desired position except for suspended. Simple one-knob, menu-driven operation allows for easy configuration, and the easy-to-read display can be rotated for easy reading in any mounting position. Moreover, it can be configured with a computer over the SSP interface using the TROVIS-VIEW software.
Variable automatic start-up thanks to four different initialization modes, and preset parameters mean that only values deviating from the standard need to be adjusted. The calibrated travel sensor without gears susceptible to wear is a valuable feature, just as the sub (substitution) initialization mode that allows the positioner to be started up in case of an emergency while the plant is running without having to change the valve position.
The Electropneumatic positioner with HART® communication is equipped with self-diagnostic features such as messages in a condensed state conforming to NAMUR Recommendation NE 107, issued over a fault alarm contact or optional analog position transmitter. Furthermore, it has an integrated temperature sensor and operating hours counter, as well as two standard programmable position alarms.
Save all parameters in non-volatile EEPROM and use it with a two-wire system having a small electrical load of 410 Ω. The adjustable output pressure limitation, tight-closing function, and automatic zero monitoring features make this an advanced piece of technology for control valve applications.
Moreover, a DTM file is available for integration into FDT frame applications according to specification 1.2.
| Model Number | 3730-3 Samson Valve Positioner |
| Temperature | ≤0.15 %/10 K |
| Degree of protection | IP 66/NEMA 4X |
| Static destruction limit | 100 MA |
| Signal range | 4 To 20 MA |
| Minimum current | 3.6 MA For Display 3.8 MA For Operation |
| Direction of action | Reversible |
| Sensitivity | ≤0.1 % |
| Media | Gas |
| Deviation | ≤1 % |
The Samson 3730-3 Electropneumatic Valve Positioner is a highly trusted and widely used advanced control system in industrial settings. As a leading Valve Positioner, it serves a number of essential applications, including:
The Samson 3730-3 Valve Positioner can be seamlessly integrated into control systems via digital communication, which provides remote monitoring and diagnostics. Thanks to its rugged construction and high precision, this system is perfect for harsh industrial environments, improving efficiency and reliability of any process.
The Control Valve Positioner is a critical component of any control valve system, ensuring accurate and reliable control of process variables. Our technical support and services for this product include:
- Installation guidance and support
- Troubleshooting assistance
- Regular maintenance and calibration services
- Repair and replacement services
- Training for operators and maintenance personnel
We are committed to providing comprehensive and high-quality support to ensure the optimal performance and longevity of your Control Valve Positioner.
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