Woodward 9907-1199 CPC-II Current-to-Pressure Converter for Steam Turbine Control
Woodward 9907-1199 CPC-II Current-to-Pressure Converter for Steam Turbine Control
Manufacturer: Woodward
Product No.: 9907-1199
Condition:1000 in stock
Product Type: Current-to-Pressure Converter
Product Origin: 9907119900013
Payment: T/T, Western Union
Weight: 4000g
Shipping port: Xiamen
Warranty: 12 months
- 24/7 Support
- 30-Day Returns
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Woodward 9907-1199 CPC-II Current-to-Pressure Converter Overview
The Woodward 9907-1199 represents a precision-engineered Current-to-Pressure Converter (CPC-II) designed specifically for steam turbine valve servo positioning applications. This industrial-grade electro-pneumatic transducer converts standardized electrical current signals (4-20 mA) into proportional pneumatic pressure outputs, enabling accurate control of turbine valve actuators in power generation and industrial process environments.
Technical Specifications
- Input Signal: 4-20 mA DC current loop
- Output Pressure Range: 3-27 psi (0.2-1.86 bar) proportional
- Supply Pressure: 35-150 psi (2.4-10.3 bar) clean, dry instrument air
- Accuracy: ±0.5% of span typical
- Response Time: Less than 100 milliseconds to 90% output
- Operating Temperature: -40°F to +185°F (-40°C to +85°C)
- Electrical Connection: Screw terminals for field wiring
- Pneumatic Connections: 1/4" NPT supply and output ports
- Housing: Rugged aluminum alloy with corrosion-resistant coating
Application Scenarios
The 9907-1199 CPC-II excels in demanding turbine control applications where precise valve positioning is critical. Common deployment scenarios include:
- Steam turbine governor valve actuation in utility power plants
- Combined cycle gas turbine (CCGT) steam section control
- Industrial cogeneration facility turbine management
- Retrofit upgrades replacing obsolete pneumatic positioners
- Integration with modern DCS systems requiring I/P conversion
Solution Architecture
This converter serves as the critical interface between electronic control systems and pneumatic valve actuators. The device receives command signals from turbine governors or distributed control systems, then generates proportional pneumatic pressure to position steam admission valves with exceptional repeatability. Its fail-safe design ensures controlled shutdown behavior during electrical supply interruption, while the integral pressure regulator maintains stable output independent of supply pressure fluctuations.
Installation and Integration
Mount the unit in a vibration-isolated location near the valve actuator to minimize pneumatic lag. Ensure instrument air supply meets ISO 8573-1 Class 3 cleanliness standards. Wire the 4-20 mA loop using shielded twisted-pair cable with proper grounding to prevent electromagnetic interference. Calibration procedures involve zero and span adjustments accessible via external potentiometers, allowing field technicians to match output characteristics to specific actuator requirements.
Frequently Asked Questions
Q: Is the 9907-1199 compatible with legacy Woodward governors?
A: Yes, this CPC-II model maintains backward compatibility with 2301A, TG-13, and 505 series governors, making it ideal for system upgrades without complete control replacement.
Q: What maintenance intervals are recommended?
A: Inspect air filter elements quarterly and verify calibration annually. The solid-state electronics require no routine maintenance beyond connection integrity checks.
Q: Can this unit operate in hazardous area classifications?
A: The standard 9907-1199 is suitable for general industrial environments. For Class I Division 2 applications, consult factory documentation regarding intrinsic safety barriers.
Q: What is the typical lifespan?
A: With proper air filtration and environmental protection, expect 15-20 years of reliable service. The absence of moving electronic components enhances long-term durability.
Warranty and Support
All units include a comprehensive 12-month manufacturer warranty covering defects in materials and workmanship. Technical support resources include installation guides, calibration procedures, and troubleshooting assistance from certified industrial automation specialists.
Related Products
Enhance your turbine control system with these complementary components:
| Product | Description | Link |
|---|---|---|
| Woodward 9907-1200 | Alternative CPC-II model with extended temperature range | View Product |
| Woodward 9905-864 | 505 Digital Turbine Control for integrated governor solutions | View Product |
| Woodward 8901-457 | CPC-II variant optimized for high-vibration environments | View Product |
© 2025 INDUSTRIAL CONTROL HUB. All rights reserved.
Original Source: https://www.indctrlhub.com
Contact: sales@indctrlhub.com | +0086 18359243191
Product Description
Woodward 9907-1199 CPC-II Current-to-Pressure Converter Overview
The Woodward 9907-1199 represents a precision-engineered Current-to-Pressure Converter (CPC-II) designed specifically for steam turbine valve servo positioning applications. This industrial-grade electro-pneumatic transducer converts standardized electrical current signals (4-20 mA) into proportional pneumatic pressure outputs, enabling accurate control of turbine valve actuators in power generation and industrial process environments.
Technical Specifications
- Input Signal: 4-20 mA DC current loop
- Output Pressure Range: 3-27 psi (0.2-1.86 bar) proportional
- Supply Pressure: 35-150 psi (2.4-10.3 bar) clean, dry instrument air
- Accuracy: ±0.5% of span typical
- Response Time: Less than 100 milliseconds to 90% output
- Operating Temperature: -40°F to +185°F (-40°C to +85°C)
- Electrical Connection: Screw terminals for field wiring
- Pneumatic Connections: 1/4" NPT supply and output ports
- Housing: Rugged aluminum alloy with corrosion-resistant coating
Application Scenarios
The 9907-1199 CPC-II excels in demanding turbine control applications where precise valve positioning is critical. Common deployment scenarios include:
- Steam turbine governor valve actuation in utility power plants
- Combined cycle gas turbine (CCGT) steam section control
- Industrial cogeneration facility turbine management
- Retrofit upgrades replacing obsolete pneumatic positioners
- Integration with modern DCS systems requiring I/P conversion
Solution Architecture
This converter serves as the critical interface between electronic control systems and pneumatic valve actuators. The device receives command signals from turbine governors or distributed control systems, then generates proportional pneumatic pressure to position steam admission valves with exceptional repeatability. Its fail-safe design ensures controlled shutdown behavior during electrical supply interruption, while the integral pressure regulator maintains stable output independent of supply pressure fluctuations.
Installation and Integration
Mount the unit in a vibration-isolated location near the valve actuator to minimize pneumatic lag. Ensure instrument air supply meets ISO 8573-1 Class 3 cleanliness standards. Wire the 4-20 mA loop using shielded twisted-pair cable with proper grounding to prevent electromagnetic interference. Calibration procedures involve zero and span adjustments accessible via external potentiometers, allowing field technicians to match output characteristics to specific actuator requirements.
Frequently Asked Questions
Q: Is the 9907-1199 compatible with legacy Woodward governors?
A: Yes, this CPC-II model maintains backward compatibility with 2301A, TG-13, and 505 series governors, making it ideal for system upgrades without complete control replacement.
Q: What maintenance intervals are recommended?
A: Inspect air filter elements quarterly and verify calibration annually. The solid-state electronics require no routine maintenance beyond connection integrity checks.
Q: Can this unit operate in hazardous area classifications?
A: The standard 9907-1199 is suitable for general industrial environments. For Class I Division 2 applications, consult factory documentation regarding intrinsic safety barriers.
Q: What is the typical lifespan?
A: With proper air filtration and environmental protection, expect 15-20 years of reliable service. The absence of moving electronic components enhances long-term durability.
Warranty and Support
All units include a comprehensive 12-month manufacturer warranty covering defects in materials and workmanship. Technical support resources include installation guides, calibration procedures, and troubleshooting assistance from certified industrial automation specialists.
Related Products
Enhance your turbine control system with these complementary components:
| Product | Description | Link |
|---|---|---|
| Woodward 9907-1200 | Alternative CPC-II model with extended temperature range | View Product |
| Woodward 9905-864 | 505 Digital Turbine Control for integrated governor solutions | View Product |
| Woodward 8901-457 | CPC-II variant optimized for high-vibration environments | View Product |
© 2025 INDUSTRIAL CONTROL HUB. All rights reserved.
Original Source: https://www.indctrlhub.com
Contact: sales@indctrlhub.com | +0086 18359243191