Woodward 9907-1200 CPC-II Current-to-Pressure Converter

Woodward 9907-1200 CPC-II Current-to-Pressure Converter

The Woodward 9907-1200 is a precision-engineered Current-to-Pressure Converter (CPC-II) designed for demanding steam turbine control applications. This industrial-grade electro-pneumatic transducer converts 4-20 mA DC electrical signals into proportional pneumatic output pressure ranging from 3 to 15 psi (0.2 to 1.0 bar), delivering exceptional accuracy and reliability in critical process control environments.

Technical Specifications

• Input Signal: 4-20 mA DC
• Output Pressure: 3-15 psi (0.2-1.0 bar)
• Accuracy: ±0.5% of span
• Supply Pressure: 20-30 psi (1.4-2.1 bar)
• Air Consumption: 0.5 SCFM at mid-range
• Response Time: Less than 1 second to 90% of step change
• Operating Temperature: -40°F to 185°F (-40°C to 85°C)
• Enclosure Rating: NEMA 4X / IP66

Application Scenarios

The 9907-1200 excels in steam turbine governor systems where precise valve positioning is critical for load control and speed regulation. Common applications include power generation facilities, petrochemical plants, industrial cogeneration systems, and marine propulsion turbines. This converter interfaces seamlessly with Woodward 505 digital governors and legacy analog control systems, making it ideal for both new installations and retrofit projects.

Key Features & Solutions

• High Precision Control: Maintains tight tolerance for critical valve servo positioning
• Rugged Construction: Corrosion-resistant materials withstand harsh industrial environments
• Fast Response: Sub-second reaction time ensures stable turbine operation
• Universal Compatibility: Works with standard 4-20 mA control signals from any manufacturer
• Field-Proven Reliability: Decades of proven performance in mission-critical applications

Common Questions

Q: Is the 9907-1200 compatible with digital control systems?
A: Yes, it accepts standard 4-20 mA signals from any digital or analog controller, including Woodward 505, 723, and microprocessor-based systems.

Q: What air quality is required?
A: Clean, dry instrument air per ISA-S7.0.01 standard. A 40-micron filter and air dryer are recommended.

Q: Can it be used in hazardous locations?
A: The standard unit is suitable for general industrial use. For hazardous area applications, consult factory for explosion-proof options.

Q: What maintenance is required?
A: Minimal maintenance required. Inspect air filter quarterly and verify calibration annually or per plant procedures.

Warranty & Support

All Woodward 9907-1200 units include a comprehensive 12-month manufacturer warranty covering defects in materials and workmanship. Our technical support team provides installation guidance, troubleshooting assistance, and calibration procedures to ensure optimal performance throughout the product lifecycle.

Related Products

Enhance your turbine control system with these compatible components:

• Woodward 8901-457 CPC-II Converter - Alternative model for similar applications
• Woodward 9907-1197 CPC-II Converter - Higher pressure range variant
• Woodward 9907-1199 Steam Turbine Control - Enhanced model with advanced features

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