- Automation & ControlView all 1,652 products
- AC Drives
- Industrial Communications
- PLC & I/O Cards
- Vibration Monitoring
- Automation Accessories
- Controllers & Data Acquisition
- CCTV & Security
- Safety Switches & Guard Locking
- Encoders
- Industrial Computers
- Servo Drives
- Isolator & Barrier
- Motor Soft Starters
- HMI Displays
- Pneumatic Cylinders
- Automation Software
- Machine Vision
- Robotics
Brand: Foxboro
Foxboro SRI990 Analog Pneumatic Positioner – SRI990-BIMS7ZZZR
Description
Product Overview
The Foxboro SRI990 analog positioner is a well established pneumatic valve positioner manufactured by Foxboro (now part of Schneider Electric). It converts a standard 4-20 mA control signal into a pneumatic output that positions the valve actuator accurately according to the control demand.
The order code SRI990-BIMS7ZZZR identifies a specific configuration of the SRI990 positioner family. The positioner is available in single acting and double acting versions, with ATEX certification for installation in potentially explosive atmospheres, making it suitable for use in oil and gas and chemical process plants.
Key Features
- Analog pneumatic valve positioner with 4-20 mA two-wire input
- Available in single acting and double acting versions
- ATEX certified for hazardous area installation
- Simple mechanical design with reliable, repeatable positioning
- Direct and reverse acting configurations supported
- Compact and robust construction for industrial environments
- Easy calibration and maintenance in the field
Technical Specifications
| Model | Foxboro SRI990 (order code SRI990-BIMS7ZZZR) |
|---|---|
| Input signal | 4-20 mA DC, two-wire |
| Output | pneumatic signal to single or double acting actuator |
| Certification | ATEX for hazardous areas (Ex version) |
| Operation | direct or reverse acting |
| Manufacturer | Foxboro / Schneider Electric |
| Application | control valves, dampers and pneumatic actuators |
Applications
The SRI990 positioner is used on control valves in refining, petrochemical, oil and gas production, power and water treatment plants. It provides reliable valve positioning for flow, pressure, level and temperature control loops, including applications in classified hazardous areas.
Ordering and Selection
When selecting the Foxboro positioner, confirm the input signal, actuation type and hazardous area certification, because each Foxboro SRI990 positioner is configured for a specific control valve. The SRI990 is a pneumatic valve positioner with 4-20 mA input, and the selected Foxboro positioner must be matched to the valve actuator and fail-safe action. Our team can help you confirm that the Foxboro SRI990 you select is correct for your valve.
Maintenance and Support
The Foxboro positioner should be checked periodically for correct calibration and air supply cleanliness. Genuine Foxboro positioner spares and complete replacement units are available through Seven Star LLC. Contact our team for assistance with the Foxboro SRI990, and we will confirm availability and lead time for your project.
Industry Applications and Custom Support
The Foxboro positioner is trusted by operations and maintenance teams across process plants in Oman, the GCC and the wider Middle East region. Our customers select the SRI990 positioner for reliability, genuine quality and dependable supply. Seven Star LLC provides custom support including technical selection, quotation and after-sales assistance, and we regularly supply this positioner as part of preventive maintenance programs and shutdown packages. Whether you need a single unit or a complete set for a project, our team supports procurement and inspection.
The SRI990 analog positioner converts the pneumatic input signal to the valve stem position, and the positioner with the BIMS7ZZZR model code covers the standard spring range configuration for the control valve.
The positioner is mounted on the actuator yoke, and the cam adjustment matches the valve characteristic to the controller output.
The Foxboro positioner is used for the pneumatic control valves, and the SRI990 provides the stable positioning with the force balance principle for the process control.
The gauge connection on the cover shows the supply and the output pressure.
The lever set covers the standard operating ranges, and the zero adjustment is accessible on the cover. The positioner is prepared for the gauge connection and the supply regulation of the pneumatic circuit.
The Foxboro SRI990 analog positioner is the pneumatic valve positioner of the SRI series, and the Foxboro SRI990 analog positioner is mounted on the Foxboro control valves for the stable positioning.
The Foxboro SRI990 analog positioner is verified with the actuator, and the SRI990 positioner is adjusted for the valve stroke of the loop.
Why Seven Star LLC?
Seven Star LLC supplies genuine Foxboro and Schneider Electric positioners and instrumentation spares across the GCC. We verify order codes and certifications, ensuring the correct positioner configuration for your control valves.
Our engineers help you verify the exact model and revision before ordering, avoiding costly mismatches.
Request a Quote for Foxboro SRI990 Analog Pneumatic Positioner – SRI990-BIMS7ZZZR
For the Foxboro positioner or any related control and instrumentation requirement, contact the Seven Star LLC team. Submit a formal inquiry through our RFQ page with your valve size, actuation and process data, and our specialists will respond with a detailed commercial proposal and the official Foxboro documentation.
Mounting and Calibrating the SRI990
Most positioning problems come from the mechanical linkage, not the positioner. Mount the unit with the kit that suits the actuator type – linear or rotary – and make sure the feedback lever is at right angles to the stem at mid-travel, so the feedback is linear over the full stroke.
- Supply clean, dry, oil-free instrument air through a filter regulator set within the positioner’s rated supply range.
- Confirm the required action (direct or reverse) and the valve’s fail position before setting up.
- Set zero at 4 mA and span at 20 mA, then repeat, as the two adjustments interact.
- Stroke the valve at 0, 25, 50, 75 and 100 percent and check the travel against the signal in both directions.
- In hazardous areas, check that cable glands, barriers and wiring comply with the certificate on the nameplate.
Troubleshooting
- Valve does not move: no air supply, no input signal, or wrong polarity on the 4-20 mA loop.
- Hunting or oscillation: excess friction in the valve packing, loose linkage or an undersized actuator.
- Offset from set point: zero or span drift, worn linkage, or a supply pressure that is too low.
- High air consumption: leaking tubing fittings, a damaged actuator diaphragm or contaminated air affecting the pneumatic relay.
Water or oil in the air supply is the main enemy of pneumatic positioners; drain filters regularly and check the dryer.
Identifying a Replacement
Quote the full model code from the nameplate (for example SRI990-BIMS7ZZZR), because characters in the code define the certification, action and options. Note the actuator type and the mounting kit, which may need to be ordered separately.
Applications in Oman and the GCC
Analog positioners like the SRI990 remain installed on control valves in oil and gas production stations, gas plants, refineries and power and desalination plants in Oman. Many operators keep like-for-like spares so maintenance teams can exchange a unit without changing the loop design or the hazardous-area documentation.
Related Products
Reviews (0)
About brand
Foxboro is an American brand of process control instruments and systems, founded in 1908 in Foxborough, Massachusetts. It became known for transmitters, positioners and later the I/A Series distributed control system. Foxboro was part of Invensys and has been part of Schneider Electric since 2014.
Seven Star LLC lists Foxboro control processors, transmitters and valve positioners, and supplies Foxboro instruments and DCS spare modules to plants in Oman as an independent supplier. We check every model code against the manufacturer's documentation before we quote.
Foxboro company profile
| Founded | 1908, Foxborough, Massachusetts |
|---|---|
| Ownership | Schneider Electric, since 2014 |
| Former parent | Invensys |
| Systems | Foxboro DCS (formerly I/A Series) |
| Product families | IMV30 multivariable transmitters, IAP and IDP pressure transmitters, FCP280 controllers, SRI990 positioners |
Milestones
- 1908: Foxboro is founded in Massachusetts.
- 2014: Schneider Electric acquires Invensys and Foxboro.
Foxboro products listed here
Three product lines are represented. The FCP280 is the field control processor of the Foxboro DCS, known to long-time users as I/A Series. The IMV30 is a multivariable transmitter that measures differential pressure and absolute pressure, takes process temperature from a separate sensor, and calculates flow. The SRI990 is an analog positioner for pneumatic actuators, driven by a 4-20 mA signal. Positioner nameplates may read Foxboro Eckardt, and newer documents carry the Schneider Electric name.
Foxboro products we list
| Family | Examples |
|---|---|
| Pressure Instrumentation | IMV30 Multivariable Transmitter |
| Valve Positioners | SRI990 Analog Pneumatic Positioner |
| Controllers & Data Acquisition | Schneider Electric Foxboro FCP280 Field… |
Ordering Foxboro parts: what we need
Foxboro uses long model codes in which each group selects an option, for example SRI990-BIMS7ZZZR. Send the code complete with the serial number from the data plate. For DCS modules we need the part number and hardware revision. For transmitters add range, process connection, wetted materials and the approval needed at your GCC site.
Facts checked against Schneider Electric's Foxboro pages, October 2026.
Browse Foxboro products by category: Pressure Instrumentation, Valve Positioner, Controllers & Data Acquisition.
FAQ
Questions about the Foxboro SRI990 Analog Pneumatic Positioner
Answers from our engineering team on installation, compatibility and integration.
01What is the Foxboro SRI990 positioner?
It is an analog pneumatic valve positioner that converts a 4-20 mA control signal into a pneumatic output for valve actuators.
02Is the SRI990 available in double acting version?
Yes, the SRI990 is available in both single acting and double acting versions, and the order code specifies the configuration.
03Is the SRI990 certified for hazardous areas?
Yes, the positioner is available with ATEX certification for installation in explosive atmospheres.
04What input signal does the positioner accept?
It accepts a standard 4-20 mA DC two-wire control signal.
05What details should I include in my inquiry for the Foxboro SRI990 analog positioner?
Send the part number, your system details and the required quantity through the RFQ page. Seven Star LLC confirms the exact configuration, the matching accessories and the commercial terms for your project.
Reviews
There are no reviews yet.