The Samson 3730 and 3731 are high-performance electro-pneumatic valve positioners designed for precise control of linear and part-turn actuators in industrial process systems. These devices convert 4-20 mA electrical input signals into proportional pneumatic output pressure to accurately position control valves. They deliver reliable performance in demanding environments, with robust construction and advanced diagnostic capabilities.
The 3730 model is optimized for linear actuators, while the 3731 is engineered for part-turn valves like ball, butterfly, and plug valves. Both integrate seamlessly with HART communication for remote monitoring and configuration.
| Parameter | Details |
|---|---|
| Input Signal | 4-20 mA DC, HART 7 compatible |
| Supply Pressure | 0.2 to 0.7 MPa (2 to 7 bar) |
| Output Pressure Range | 0.02 to 0.6 MPa (0.2 to 6 bar) |
| Positioning Accuracy | ±0.25% of full scale |
| Enclosure Protection | IP66 / IP67 |
| Ambient Temperature | -40°C to +85°C (-40°F to +185°F) |
| Communication Protocol | HART 7 |
| Mounting Standard | IEC 60534-6-1 / VDI/VDE 3845 |
| Certification | ATEX, IECEx, CSA, FM (hazardous area approval) |
The Samson 3730 and 3731 positioners are ideal for critical process control in industries requiring high reliability:
A: The 3730 is designed for linear actuators (globe, control valves), while the 3731 is optimized for part-turn actuators (ball, butterfly, plug valves).
A: Yes, both models are ATEX, IECEx, and CSA certified for use in Zone 1/21 and Zone 2/22 hazardous locations.
A: With automatic calibration, routine calibration is typically only needed every 2–3 years or after maintenance.
A: No, the positioners operate with a basic 4-20mA signal, but HART unlocks remote configuration and diagnostic capabilities.
For inquiries, technical support, or to request a quote, reach out to us directly:
wechat/what's app/phone number:+8613472860702
Our team of industrial automation experts is ready to assist with product selection, configuration, and after-sales support.
Peringkat Keseluruhan
Cuplikan Peringkat
Berikut adalah distribusi dari semua peringkatSemua Ulasan