The Outside Air Temperature (OAT) probe has an outside aluminum shield which is used to both hold the probe in place and shield it from radiated heat. When installing the OAT probe, shield the sensor from direct sunlight and engine heat. The OAT probe is installed in the airframe manufactures recommended location, if this information is not available, we recommend installing the probe in clean airflow such as in a cabin air scoop or below the underside of the wing away from engine heat or exhaust heat.
| NPT - National Pipe Thread Taper | |||
|---|---|---|---|
| Note! Pipe thread sizes do not refer to any physical dimensions. The outside diameter of a pipe or fitting must be measured and referenced to a table for size identification. | |||
| Note! Inserting a NPT tapered fitting into a port tapped for a straight thread fitting and tightening it can break or severely damage the item the fitting is being installed in. | |||
| Pipe Size (inch) | Thread Pitch TPI | Fitting O.D. (inch) | NPT Specifications |
| 1/16" | 27 | 0.313" |
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| 1/8" | 27 | 0.405" | |
| 1/4" | 18 | 0.540" | |
| 3/8" | 18 | 0.675" | |
| 1/2" | 14 | 0.840" | |
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