Xiangjing (Shanghai) M&E Technology Co., Ltd
| Payment Terms | T/T |
| Supply Ability | 600 units per year |
| Delivery Time | 70 days |
| Packaging Details | Carton + Wooden crate + Protective packaging |
| Communication port protocol | HART, 4...20 mA Profibus FOUNDATION fieldbus |
| Pneumatic connection type | 0.25 inch 18 NPT G 1/4 |
| Input pressure | 1.4...6 bar |
| Stroke range | 8...260 mm |
| Maximum hysteresis | 0.3 % |
| Linearity | < 0.4 % of the travel span |
| Ambient Air Temperature | -40...176 °F (-40...80 °C) |
| Brand Name | Foxboro |
| Model Number | SRD991 |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T | Supply Ability | 600 units per year |
| Delivery Time | 70 days | Packaging Details | Carton + Wooden crate + Protective packaging |
| Communication port protocol | HART, 4...20 mA Profibus FOUNDATION fieldbus | Pneumatic connection type | 0.25 inch 18 NPT G 1/4 |
| Input pressure | 1.4...6 bar | Stroke range | 8...260 mm |
| Maximum hysteresis | 0.3 % | Linearity | < 0.4 % of the travel span |
| Ambient Air Temperature | -40...176 °F (-40...80 °C) | Brand Name | Foxboro |
| Model Number | SRD991 | Place of Origin | China |
| High Light | Foxboro SRD991 valve positioner ，digital valve controller industrial ，pneumatic control valve positioner | ||
The SRD991 Intelligent Positioner from Schneider Electric (Foxboro) is a high-performance electropneumatic device designed to precisely control pneumatic valve actuators in industrial processes. It operates by receiving control signals from systems like the Foxboro I/A Series or other controllers, ensuring accurate valve positioning for linear or rotary actuators. Featuring advanced communication protocols such as HART, PROFIBUS-PA, or FOUNDATION Fieldbus, it includes a multilingual graphical LCD display for easy monitoring and configuration. Intrinsically safe (Ex ia) versions are available for hazardous environments, making it suitable for demanding applications where reliability and safety are paramount.
| Parameter | Details |
|---|---|
| Travel Range | Linear: 8-260 mm (standard lever); Rotary: Up to 90° |
| Supply Pressure | 1.4 to 6 bar (20 to 90 psi), ISO 8573-1 Class 3 |
| Input Signal | 4-20 mA (HART), bus voltage 9-32 V DC (PROFIBUS/FF) |
| Output | Pneumatic: y1/y2 for single/double acting; Electrical: 4-20 mA feedback, binary outputs |
| Ambient Temperature | -40°C to +80°C (-40°F to +176°F) |
| Protection Class | IP66, NEMA 4X |
| Hysteresis | <0.3% |
| Air Consumption | <0.03 kg/h (steady state) |
| Communication | HART (4-20 mA), PROFIBUS-PA, FOUNDATION Fieldbus H1 |
| Display | Multilingual graphical LCD |
| Explosion Protection | Ex ia IIC T6 (ATEX, IECEx) |
Ideal for process industries such as oil & gas, chemical, and water treatment, where precise valve control is essential. Used with pneumatic actuators for throttling valves, on/off applications, or integrated with control systems for automated flow regulation. The top-mounted version suits small actuators without yokes, while diagnostics support predictive maintenance in harsh environments.
Phone/WeChat/WhatsApp: +8613916209596
Email: svetama@gbsxj.com
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Agent,Importer,Exporter,Trading Company,Seller,Other
Year Established:
2015
Total Annual:
30,000,000-50,000,000
Employee Number:
200~300
Ecer Certification：
Verified Supplier
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