TPI 381A - Combination Non-Contact/Contact Thermometer
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The Test Products International (TPI) 381A Combination Non-Contact/Contact Thermometer is indispensable for ensuring optimal aircraft performance and safety. It helps maintain aircraft systems at optimal operating conditions, prevent equipment failures, and ensure passenger safety by providing precise temperature measurement and versatile functionality.
Key Features
- Uses K-type thermocouples with sub-mini connectors for contact measurements
- Contact and non-contact thermometer
- Maintain reading on display
- Laser sighting
- Backlit display
- 9:1 distance-to-spot ratio
- 0.1-degree resolution
- 0.95 fixed emissivity
- 3-year limited warranty
| General Information | |
|---|---|
| Part # | 381A |
| Manufacturer | Test Products International |
| Shipping Information | |
|---|---|
| Product Weight | 0.7 lbs. |
| Product Dimensions | 10 x 8 x 6 in. |
| Schedule B | 9025198080 |
| Specifications | |
|---|---|
| °F or °C | Selectable (slide switch in handle) |
| Battery Type | 9V |
| Contact Accuracy | +(0.5% of reading + 3.5°F (2°C) |
| Contact or Non-contact | Selectable (slide switch in handle) |
| Display Hold | Yes |
| Distance to Spot Ratio | 9:1 |
| Emissivity | 0.95 Fixed |
| IR Accuracy @ 23°C and 0.95 emissivity | ° 5°F (3°C) below 32°F (0°C), 32°F to 572°F (0°C to 300°C) ° 2% of rdg, or ° 3.5°F (2°C) whichever is greater |
| Laser Sighting | Output <1mW, Wavelength 645-660nm, Class II Laser |
| Operating Temperature | 32°F to 120°F (0°C to 50°C) |
| Response Time | 500mS |
| Spectral Response | 7 to 14um |
| Temperature Range | Non-contact: -4° to 572°F (-20° to 300°C), Contact: * -148° to 2192°F (-100° to 1200°C) |
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AIRCRAFT COMPATIBILITY
This item is for use on all aircraft.
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QUESTIONS & ANSWERS
The laser spot needs to be showing inside the target area. An 8:1 distance-to-spot ratio means you are measuring a 1" diameter area at a distance of 8".
Distance is unlimited. The size of the target area sets the limit on distance for accurate measurements. For example, if the area you wish to measure is 1 foot in diameter, then you will need to be within 8 feet to record an accurate temperature.
Approximately one-half inch in diameter.
Emissivity is the ratio of an object's infrared emission compared to a theoretical black body considered 1. Emissivity is always less than 1.
Adjustable emissivity allows your non-contact thermometer to be adjusted to the surface you are checking to ensure more accurate readings.
