Item Superseded
This item has been discontinued or is no longer available.
It has been replaced by Test Products International 505L (Qty 1)
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Key Features:
• Versatile Measurement: Accurately measure RPM from 0.5 to 30,000 for engines, propellers, APUs, and auxiliary power units.
• Contact and Non-Contact Options: Measure rotating and stationary components, including shafts, gears, and pulleys.
• Data Retention: Capture and analyze speed data with last, maximum, and minimum measurement storage.
• Durable Construction: Built to withstand the rigors of aviation maintenance environments.
• Efficient Operation: User-friendly design allows for quick and accurate measurements.
The Test Products International (TPI) 505 tachometer provides precise speed data, helping to diagnose engine and component issues, balance rotors, and optimize aircraft performance.
| General Information | |
|---|---|
| Part # | 505 |
| Manufacturer | Test Products International |
| Shipping Information | |
|---|---|
| Product Weight | 0.5 lbs. |
| Product Dimensions | 10 x 8 x 6 in. |
| Specifications | |
|---|---|
| Accuracy | +/-0.15% |
| Contact Tachometer Accuracy | ± 0.1% of FS + 1 digit |
| Contact Tachometer Range | 6 - 20,000 RPM |
| Display Type | 5 Digit LCD |
| Maximum Input | 10A DC |
| Maximum Resolution | 0.01μA DC |
| Operating Humidity | 80% Max. R.H |
| Operating Temperature | 32° to 122°F (0° to 50°C) |
| Photo Tachometer Accuracy | ± 0.1% of FS + 1 digit |
| Photo Tachometer Range | 6 - 30,000 RPM |
| Power Supply | AA Alkaline Batteries (2 each) |
| Range | 2.0 - 9,990 ft/min |
| Surface Speed Range | 0.9 - 3,046 m/min |
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AIRCRAFT COMPATIBILITY
This item is for use on all aircraft.
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QUESTIONS & ANSWERS
Question:
How can I test this tachometer to make sure it’s operating properly?
Answer:
Testing this tachometer is easy. Point the unit at the palm of your hand and press the “ON” button. You should see light on your hand from the lens of the unit. If you don’t, replace the batteries and test again. Point the tachometer at a fluorescent light (the closer to the light the better). Press the “ON” button. The displayed reading should be 7200 RPM +/- 10 RPM.
Asked October 3, 2024
Question:
My tachometer is reading higher than the RPM being measured. What could be the problem?
Answer:
Try replacing the batteries. As the batteries get weak, the reading will increase. The low-battery indicator (BAT) will display to indicate that the batteries require replacement.
Asked October 3, 2024
