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Xiangjing (Shanghai) M&E Technology Co., Ltd

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China ASCO Solenoid Valves Foxboro SRD991 Smart Digital Valve Controller Valve
China ASCO Solenoid Valves Foxboro SRD991 Smart Digital Valve Controller Valve

  1. China ASCO Solenoid Valves Foxboro SRD991 Smart Digital Valve Controller Valve
  2. China ASCO Solenoid Valves Foxboro SRD991 Smart Digital Valve Controller Valve
  3. China ASCO Solenoid Valves Foxboro SRD991 Smart Digital Valve Controller Valve
  4. China ASCO Solenoid Valves Foxboro SRD991 Smart Digital Valve Controller Valve

ASCO Solenoid Valves Foxboro SRD991 Smart Digital Valve Controller Valve

  1. MOQ: 5
  2. Price: 1900 dollars
  3. Get Latest Price
Payment Terms T/T
Supply Ability 600 units per year
Delivery Time 75 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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  1. Product Details
  2. Company Details

Product Specification

Payment Terms T/T Supply Ability 600 units per year
Delivery Time 75 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 ASCO solenoid valves industrial processFoxboro SRD991 digital valve controllersmart valve positioner pneumatic control
Product Overview

Schneider Electric's SRD991 is an advanced intelligent positioner that enhances pneumatic valve actuator performance through precise signal processing and feedback. It integrates seamlessly with control systems via HART, PROFIBUS-PA, or FOUNDATION Fieldbus protocols, offering diagnostics for stroke analysis and fault prevention. Designed for both linear and rotary actuators, it features intrinsically safe options for explosive atmospheres and a robust build for industrial reliability.

Key Features
  • Diagnostics and Configuration: Built-in tools for data analysis, configurable via DTM or LCD interface.
  • Pneumatic Connections: G1/4 or NPT threads; single/double acting with closed unused ports.
  • Electrical Terminals: Setpoint input (4-20 mA), option boards for binary I/O, 4-20 mA feedback, inductive switches.
  • Mounting Options: Direct or NAMUR for linear (up to 260 mm travel), rotary with clearance for thermal expansion.
  • Safety Features: Grounding screws, warnings for pressure limits and finger safety during air connection.
  • Communication Flexibility: Supports PC-based configuration; multilingual full-text LCD.
  • Explosion Protection: Ex ia certified, suitable for hazardous areas.
Technical Specifications
Parameter Details
Input Current Min. 3.6 mA (HART), bus 10.5 mA (FF/PA)
Pneumatic Output 0-6 bar, air capacity up to 13 m³/h at 6 bar
Linearity <0.4%
Resolution <0.05%
Influence of Vibration <1% up to 10g/2000 Hz
Weight Approx. 1.7 kg (aluminum housing)
Materials Aluminum or stainless steel housing
Binary Contacts Switching voltage up to 30 V DC, NAMUR compliant
Limit Switches Inductive (SJ2-SN or similar), micro switches optional
Certifications ATEX, IECEx, FM, CSA
Applications

Engineered for valve control in petrochemical, pharmaceutical, and power generation sectors. Excels in applications requiring high precision, such as flow control in pipelines or pressure regulation in tanks. The RCV variant is tailored for research control valves with integrated actuators.

Frequently Asked Questions
  • How to connect for HART communication? Use terminals 11/12 for 4-20 mA input; ensure min. 250 Ω loop resistance.
  • What causes long Autostart duration? Mechanical backlash; verify original feedback lever and tight mounting.
  • Can it be used without communication? Yes, basic version (SRD991-xD) for standard 4-20 mA control.
  • How to adjust for rotary actuators? Ensure 1 mm clearance with washers on spindle; do not tighten grub screw against thread.
  • What air quality is required? ISO 8573-1 Class 3: free of oil, dust, water; particle class 2, oil class 3.
Contact Us

Phone/WeChat/WhatsApp: +8613916209596

Email: svetama@gbsxj.com

Related Products
  • SRD960: Explosion-proof intelligent positioner.
  • SRI986: Basic electropneumatic positioner.
  • Type 766 Actuator: Compatible pneumatic actuator for research control valves.
  • Foxboro I/A Series: Control systems for integration.
  • SRD991 RCV: Top-mounted variant for small actuators.

Company Details

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 from Quality China Factory
  • 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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  • Xiangjing (Shanghai) M&E Technology Co., Ltd
  • No.6 Building,No.98 Lane, No.1 Fulian Road, Baoshan District, Shanghai, China
  • https://www.shgongboshi.com/

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