Foxboro positioners mainly include the following types:

Pneumatic valve positioner: It is mainly used in pneumatic control valves to accurately locate the valve travel position after receiving the control signal. It and the pneumatic actuator together constitute the self-control unit, suitable for high regulation quality requirements of the system, large differential pressure occasions, viscous fluids or media containing suspended solids, large-diameter control valves and long-distance signaling and other scenarios.

Intelligent valve positioner: such as SRD991 valve positioner, with IP65 level of shell protection, can work stably in a wide temperature range of -40 ~ 80 ℃. It supports HART protocol, Profibus PA and FF digital signal, which is powerful and flexible.

Technical Specifications and Application Scenarios

Foxboro positioners have the following technical specifications and application scenarios:

Technical specifications: Enclosure protection class IP65, explosion-proof standards in accordance with ATEX, FM, and CSA intrinsically safe standards, and the use of ambient temperature of -40 ℃ - +80 ℃. Electromagnetic protection class in accordance with CE standards. Signal range is 4-20mA, straight travel range is 8mm-100mm, and angle travel range is 30-120°.

Application Scenarios: Suitable for high regulation quality requirements of the system, large differential pressure occasions, viscous fluids or media containing suspended solids, large-diameter regulating valves and long-distance signaling and other scenarios. The smart valve positioner also supports a variety of communication protocols, such as HART, FOUNDATION Fieldbus H1 and FoxCom.

Commissioning and Maintenance

The commissioning and maintenance of Foxboro positioner is relatively simple, the main steps include:

Zero debugging: Input 4mA signal, adjust the zero knob so that the cam pressure is at 0 scale and the pressure gauge pointer is around 5kg.

Stroke debugging: input 20mA signal, adjust the stroke adjustment nut, so that the cam reaches 90 degrees scale, the valve is fully open.

Through these commissioning steps, you can ensure the stable operation and efficient control of Foxboro positioners in different industrial applications.

· Many products are not yet on the shelves please contact us for more products.

· If there is inconsistency between the product model and the display picture, the model shall prevail, please contact us for specific product pictures, we will arrange to take pictures in the warehouse to confirm!

Technical Team Service Hotline：csyili980622@gmail.com  +86 13306931261