Supplier Foxboro SRD991 Intelligent Valve Positioner HART Protocol Pneumatic Control Valve Price
Price:
US $1620.00 - 1820.00/ Set
MOQ:
1
Delivery Time:
6-8 weeks
Brand:
Foxboro
Product Description
Product Overview
The Foxboro SRD991 is an intelligent electro-pneumatic valve positioner designed for precise control of pneumatic linear and rotary valve actuators. It supports 4–20 mA input with HART communication (and other protocols in different versions) and features auto-start with self-calibration, self-diagnostics, and easy local configuration via push buttons and a graphical LCD. Known for its low air consumption and robust performance, it is a reliable choice for process industries requiring accurate valve positioning with diagnostic capabilities.
Technical Specifications
| Parameter | Specification |
|---|---|
| Input Signal | 4–20 mA DC + HART |
| Communication | HART (standard), PROFIBUS-PA, FOUNDATION Fieldbus H1 available |
| Supply Air Pressure | 1.4 – 6 bar (20 – 90 psig), up to 7 bar with spool valve |
| Stroke Range | 8 – 260 mm (0.3 – 10.2 in) with standard lever |
| Rotary Angle | Up to 95° (up to 300° optional) |
| Linearity | < 0.4% of travel span |
| Hysteresis | < 0.3% of travel span |
| Repeatability / Sensitivity | < 0.1% of travel span |
| Operating Temperature | –40 °C to +80 °C (model dependent) |
| Enclosure Rating | IP65 / NEMA 4X |
| Action | Single or double-acting |
Application Industry
- Chemical and petrochemical plants
- Oil & gas processing
- Power generation
- Refineries
- General process control valves
Common Problems & Solutions
- Problem: Difficult calibration in the field → Solution: Auto-start with self-calibration and local push-button setup
- Problem: High air consumption → Solution: Optimized low air consumption design
- Problem: Vibration affecting performance → Solution: Low sensitivity to vibration in all directions
Replacement Models
- Older Foxboro / Eckardt positioner models
- Foxboro SRD960 (simpler version)
Why Buy From Us
- Genuine Foxboro SRD991 with full factory support
- Competitive pricing and warranty
- Local technical assistance for configuration and commissioning
- Reliable spare parts availability
Stock & Delivery Time
- Standard HART models: 6–12 weeks typical
- Special configurations or certifications: 8–16 weeks
RFQ Form
Please provide:
- Actuator type (linear or rotary) and stroke/angle
- Required communication protocol (HART, etc.)
- Supply air pressure available
- Hazardous area classification needs
- Quantity & target delivery date
Similar Products
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Xiangjing (Shanghai) M&E Technology Co., Ltd
Location
Building 6, 98 Fulianyi Road, Yanghang Town, Baoshan District
Contact Person
Edward Zhao