Tronair HC-2268-01 Pyrometer Gauge for Select Mineral-Based HPUs

The Tronair HC-2268-01 Pyrometer Gauge measures the temperature of hydraulic fluid in the return line of a hydraulic power unit (HPU). It provides a clear analog display that allows technicians to monitor system performance and identify potential overheating conditions. Maintaining proper fluid temperature is essential for protecting aircraft hydraulic systems and ensuring efficient operation.

The HC-2268-01 includes a preset warning indicator at 160°F (71°C) that alerts technicians when temperatures reach potentially unsafe levels. Operating beyond this range can degrade hydraulic fluid, damage seals, and reduce the efficiency of aircraft hydraulic systems. By providing an early warning, the pyrometer helps prevent overheating-related damage and costly maintenance.

The HC-2268-01 Pyrometer Gauge is designed as an optional add-on (Option K) for the Tronair 5411, 5421, 5J11, and 5J21 Series HPUs. These units are commonly used to service hydraulic systems across a wide range of general aviation and commercial aircraft. Compatibility ensures seamless installation and accurate temperature readings for either MIL-PRF-5606 or MIL-PRF-83282 hydraulic fluids.

Yes. However, Tronair does not provide certificates of calibration for pyrometers unless requested at the time of order. The HC-2268-01 is classified as a reference indicator, meaning it’s intended for monitoring rather than precision laboratory measurements. For calibration documentation, customers should specify the requirement before purchase to ensure compliance with internal quality standards.

A reference indicator provides reliable, approximate readings for operational awareness but is not certified for precision measurement. The Tronair HC-2268-01 is designed to help technicians monitor hydraulic fluid temperature trends rather than conduct calibration-critical tests. This approach ensures consistent performance for ground servicing tasks while maintaining simplicity and cost-effectiveness.

Yes. The pyrometer can be retrofitted onto compatible Tronair hydraulic power units that support Option K. Installation typically requires connecting the gauge to the fluid return line and integrating the temperature probe according to the manufacturer’s guidelines. For safety and accuracy, retrofits should be performed by trained maintenance personnel familiar with hydraulic systems.

Technicians use the pyrometer’s analog dial to monitor real-time return fluid temperatures during aircraft servicing. A reading near or above 160°F (71°C) indicates that hydraulic fluid is operating outside of ideal conditions and may need to be cooled or replaced. Regular monitoring helps identify early signs of fluid breakdown or component wear before it affects performance.

Routine maintenance is minimal. Technicians should periodically inspect the gauge face for clarity, verify the probe connection, and check for any signs of corrosion or hydraulic fluid residue. If calibration accuracy becomes a concern, the gauge can be tested and recalibrated by a qualified instrumentation service provider, especially in precision-critical maintenance environments.

Using a pyrometer provides an additional layer of system monitoring and protection for aircraft hydraulic systems. It helps ensure that hydraulic fluid remains within optimal temperature limits, preserving its viscosity and preventing premature component wear. By integrating the HC-2268-01 into an HPU, maintenance teams can maintain consistent servicing standards and enhance equipment reliability.

The HC-2268-01 enhances maintenance safety by enabling technicians to detect overheating conditions early, thereby reducing the risk of hydraulic system damage or fluid ignition. Maintaining proper fluid temperature also minimizes pressure fluctuations, ensuring smooth and predictable system performance. This preventative monitoring supports both personnel safety and operational compliance during ground servicing.

Yes. When configuring a new Tronair 5411, 5421, 5J11, or 5J21 Series HPU, customers can request Option K to include the pyrometer gauge at the time of purchase. Combining multiple options – such as filtration upgrades or fluid monitoring systems – ensures a complete and efficient hydraulic service setup tailored to your operation’s needs.