Hobart/ITW GSE 400642-003 DC Voltmeter, 0 to 50V
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The Hobart/ITW GSE 400642-003 is a 0–50V DC voltmeter designed as a direct replacement for use on Hobart 400 and 600 ground power units and JetEx generator sets. Installed on the front or control panel, this voltmeter provides accurate monitoring of the DC output voltage to help ensure stable, reliable aircraft ground power operations.
| General Information | |
|---|---|
| Part # | 400642-003 |
| Manufacturer | ITW GSE/Hobart |
| Shipping Information | |
|---|---|
| Product Weight | 0.4 lbs. |
| Product Dimensions | 3.8 x 3.8 x 2.5 in. |
| Schedule B | 9030890100 |
| ECCN | EAR99 |
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AIRCRAFT COMPATIBILITY
| Compatible Aircraft* |
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QUESTIONS & ANSWERS
The Hobart/ITW GSE 400642-003 DC voltmeter measures and displays the DC output voltage of a ground power unit. It provides operators with real-time voltage readings to ensure proper system performance. Accurate voltage monitoring is essential for safe aircraft servicing. This helps prevent issues caused by incorrect voltage levels.
This voltmeter has a measurement range of 0 to 50 volts DC. It is specifically designed for 28.5V DC ground power systems commonly used in aviation. The scale allows operators to easily verify output within normal operating limits. This ensures the reliable performance of connected aircraft systems.
The 400642-003 voltmeter is compatible with Hobart GPU-400 and GPU-600 models, as well as multiple JetEx generator sets, including 4D, 5D, 6D, and 7 series units. It is used across various front panel and control panel assemblies. These systems typically operate at 28.5V DC. Always confirm compatibility with your specific unit and series.
This voltmeter is typically installed on the front panel or control panel assembly of the GPU or generator set. It may also be located on the control box exterior or interior panels, depending on the model. Its placement allows operators to easily monitor voltage output. Proper installation ensures clear visibility and accurate readings.
The voltmeter measures DC output voltage across the main filter capacitors of the generator system. It provides a direct indication of the GPU’s electrical output. This measurement is critical for maintaining proper voltage levels. Accurate readings help ensure safe and efficient operation.
Yes, the 400642-003 is a direct replacement DC voltmeter that meets OEM specifications. It installs easily into compatible Hobart GPU and JetEx systems without modification. This ensures proper fit and reliable performance. Using direct replacement parts helps maintain system integrity.
Voltage monitoring ensures that aircraft receive consistent and correct electrical power during ground operations. Incorrect voltage can damage avionics and onboard systems. The voltmeter allows operators to quickly identify and correct issues. This improves safety and operational efficiency.
The voltmeter should be checked for accuracy every 6 months or every 1,200 hours of operation, whichever comes first. Regular inspection helps ensure reliable readings. Inaccurate measurements can lead to improper system adjustments. Routine maintenance supports long-term performance.
Signs include inaccurate readings, a non-responsive needle or display, or inconsistent voltage indications. Operators may also notice discrepancies between expected and displayed values. A faulty voltmeter can lead to improper system monitoring. Replacement is recommended if issues are detected.
The voltmeter provides real-time feedback on GPU output voltage, which is critical for safe aircraft servicing. It helps ensure that the power supplied to the aircraft is within acceptable limits. This supports maintenance, testing, and pre-flight operations. Reliable voltage monitoring contributes to efficient and safe ground support.
