TPI 665L - Dual Input Differential Manometer

TPI 665L Dual Input Differential Manometer with Data Logging

The Test Products International (TPI) 665L Dual Input Differential Manometer is a professional-grade pressure measurement tool engineered for precision diagnostics across hydraulic, pneumatic, and fuel systems. Built for aviation maintenance technicians and industrial professionals alike, the 665L delivers reliable differential pressure readings with advanced data logging capabilities — making it an indispensable instrument for troubleshooting system anomalies, optimizing equipment performance, and preventing costly failures before they occur.

With dual input channels and a wide measurement range, the 665L allows technicians to simultaneously monitor two pressure sources and calculate the differential in real time. Whether you're verifying hydraulic actuator performance, checking pneumatic line integrity, or conducting fuel system diagnostics, the 665L provides the accuracy and functionality needed to get the job done right the first time.

The instrument's data logging feature allows readings to be captured over time and transferred to a PC via an optional IR to USB interface and compatible application software — streamlining documentation, simplifying trend analysis, and supporting compliance recordkeeping. Additional features such as one-touch zero, min/max capture, and trim mode further enhance workflow efficiency in demanding maintenance environments.

Ruggedly constructed to handle the rigors of professional use, the TPI 665L is a smart investment for any aviation maintenance operation or industrial service team that demands accuracy, durability, and versatility from their test equipment.

Key Specifications

• Measurement Range: -100 to +100 psi differential
• Resolution: 0.01 psi
• Dual input channels for simultaneous pressure monitoring
• Data logging with min/max recording
• One-touch zero function
• Trim mode for fine measurement adjustments
• Optional IR to USB interface for PC connectivity
• Compatible with TPI PC application software for data transfer and analysis
• Suitable for hydraulic, pneumatic, and fuel system applications
• Durable construction designed for professional maintenance environments

Applications

• Aircraft hydraulic system diagnostics
• Pneumatic line pressure verification
• Fuel system performance testing
• HVAC and industrial pressure differential measurement
• Preventive maintenance and system optimization audits

Why Choose the TPI 665L?

The TPI 665L goes beyond basic pressure measurement by combining high-resolution accuracy with smart data management tools. Its dual input design eliminates the need for multiple instruments, while the built-in data logger ensures that every reading is captured and available for review. For aviation professionals working toward operational safety and regulatory compliance, the 665L delivers the performance and reliability needed to maintain mission-ready equipment.