42265 - Thermometer Extech - Free user manual and instructions
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| Product Type | Digital Thermometer |
| Manufacturer | Extech Instruments |
| Model | 42265 |
| Measurement Type | Type K/J Thermocouple |
| Temperature Range (Type K) | -200°C to 1372°C (-328°F to 2501°F) |
| Temperature Range (Type J) | -200°C to 1000°C (-328°F to 1832°F) |
| Accuracy | ±0.1% of reading ±0.6°C (1.1°F) |
| Resolution | 0.1°C/0.1°F up to 999.9°, then 1°C/1°F |
| Input Channels | Dual (T1, T2, T1-T2) |
| Display | Large backlit LCD |
| Data Hold | Yes |
| Min/Max/Average | Yes |
| Auto Power Off | Yes (adjustable) |
| Battery Type | 9V battery (1 supplied) |
| Battery Life | Approximately 100 hours |
| Dimensions | 7.8 x 5.4 x 2.0 in (198 x 137 x 50 mm) |
| Weight | 15.5 oz (440 g) |
| Included Accessories | Battery, dual Type K beaded wire probes, carrying case, manual |
| Certification | CE, RoHS |
Frequently Asked Questions - 42265 Extech
What type of battery does the Extech 42265 use?
It uses a standard 9V battery. The battery compartment is located at the back of the unit.
How do I switch between Celsius and Fahrenheit?
Press the °C/°F button on the front panel to toggle between units.
Can I use Type J thermocouples?
Yes, the Extech 42265 accepts both Type K and Type J thermocouples. Use the selector switch to choose the correct type.
What is the maximum temperature range?
For Type K thermocouples, the range is -200°C to 1372°C (-328°F to 2501°F). For Type J, it is -200°C to 1000°C.
How do I calibrate the thermometer?
The instrument has a zero offset adjustment (TRIM pot) accessible via a small hole on the front panel. Use a small screwdriver to adjust if needed.
Does it have a backlight?
Yes, it features a backlit LCD display for easy reading in low-light conditions. Press the backlight button to activate.
Can I record min/max values?
Yes, press the MIN/MAX button to enter recording mode. It will capture the minimum and maximum readings.
What is the accuracy specification?
Accuracy is ±0.1% of reading ±0.6°C (1.1°F) for Type K and Type J measurements.
Is the thermometer waterproof or splash-proof?
No, it is not waterproof but has a rugged housing for general industrial use. Avoid immersion.
How do I replace the probe?
Probes connect via standard miniature thermocouple connectors (flat-pin type). Simply unplug the old probe and plug in a new one.
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