Tronair HC-2239 Replacement Pressure Gauge, 0 to 600 PSI
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The Tronair HC-2239 is a replacement pressure gauge for the Tronair 18-4208-0010 Towable 4-Bottle Nitrogen Cart. Other applications may also be possible. The gauge has a pressure range of 0 to 600 PSI (41 bar).
| General Information | |
|---|---|
| Part # | HC-2239 |
| Manufacturer | Tronair |
| Shipping Information | |
|---|---|
| Product Weight | 0.5 lbs. |
| Product Dimensions | 3.5 x 3.8 x 3 in. |
| Schedule B | 9032200000 |
| ECCN | EAR99 |
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AIRCRAFT COMPATIBILITY
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QUESTIONS & ANSWERS
The HC-2239 features a compact dial suitable for panel mounting, as well as a stainless steel case and bezel construction designed to withstand field conditions. Its bezel is designed to protect the glass face from impacts.
This gauge employs a 1/4″ NPT center-back connection for pressure input, which aligns with many fluid and gas line standards in aviation ground support equipment. The orientation helps maintain neat hose routing in compact cart or panel layouts.
The manufacturer lists the HC-2239 gauge as rated for ambient temperatures from -30°F to 180°F (approximately -34°C to 82°C) for reliable operation in extreme environments. This allows it to function in both cold hangars and hot ramp conditions.
Replacement gauges are often delivered pre-calibrated to factory tolerances, ready for installation. While the exact accuracy specification is not broadly published, operators should confirm calibration status and traceability to ensure compliance.
Its construction utilizes stainless steel for both the case and bezel, providing robust resistance to corrosion and mechanical stress. The protective bezel helps absorb impacts, shielding the glass face from bumps or drops.
Like most precision pressure gauges, the HC-2239 should undergo a visual inspection before each use and a full accuracy calibration at regular intervals (e.g., annually or as per shop policy). Even though it may arrive pre-calibrated, oscillations in usage, vibration, or knock events can shift reading accuracy over time.
Exceeding the gauge’s calibrated range can permanently damage internal components, such as the Bourdon tube or linkages, rendering the gauge inaccurate or inoperative. There’s no published “burst rating” for the HC-2239, so it’s critical to avoid exceeding 600 PSI.
