Extech Infrared Thermometer With Type K Input 13:1 (42515)

In stock

Measures up to 1472F (800C). With a field of view of 13:1 and laser for accurate temperature measurement. Includes Type K bead wire probe for accurate high heat contact measurements.

Extech Infrared Thermometer With Type K Input 13:1 (42515)


  • Displays non-contact temperature readings up to 1472F (800C).
  • Fast and accurate measurements with 13:1 field of view
  • Large LCD display with bright backlight
  • MAX/MIN/AVG/DIF feature displays highest, lowest, average, and MAX minus Min values
  • Built-in laser pointer improves aim and measurement accuracy
  • Automatic emissivity increases measurement accuracy for different surfaces
  • Adjustable High/Low set points with audible alarm alerts user when temperature exceeds the programmed set points
  • Complete with 9V battery, Type K bead wire probe and carrying case
  • Memory with recall for up to 20 readings

The Extech Model 42515 IR Thermometer measures and displays non-contact temperature readings up to 1472F (800C) and Type K bead wire probes up to 2498F (1370). The laser pointer ensures accurate targeting and temperature measurement. The adjustable high/low set points with an audible alarm will alert the user when the temperature exceeds the programmed set points. The automatic emissivity feature allows the IR thermometer to measure the temperature of virtually any surface. Proper use and care of this meter will provide years of reliable service.

The meter has a distance to target ratio of 13:1. The spot size at this distance has a 1” diameter. The closer to the meter the smaller spot size for measurement you will have. Complete with 9V battery, Type K bead wire probe and carrying case

Measuring Leaf Temperature

Infrared Thermometers are useful tools for so many applications where the surface temperature of something is important. One of the most important uses of an IR Thermometer in agriculture is to measure the temperature of your leaves. Measuring the difference between leaf temperature and ambient air temperature has been discovered to be one of the best indications of plant stress from heat, light and especially lack of water. High temperature differentials between leaf temperature and ambient air temperature has been found to lead to reduced yields so monitoring this is extremely important.

Distance : Spot Ratio

The infrared thermometers have a ratio such as 13:1  which is the distance to spot ratio. This means that the beam diameter cast on the leaf will be 1/13th of the distance from the sensor to the object. For example if you stood at 13 inches away from the leaf, the beam of light cast on the leaf would measure 1 inch in diameter, in other words the closer you are to the leaf the more concentrated the area will be that you measure. The higher the distance:spot ratio, the better quality the thermometer and you can also take accurate measurements from further away from the target.


  • IR Range -58 to 1472°F (-50 to 800°C)
  • Type K Range -58 to 2498°F (-50 to 1370°C)
  • Repeatability ±0.5% or 1.8°F/1°C
  • Basic Accuracy IR: ±2% or ±4°F/2°C Type K: ±1.5% +2°F/1°C
  • Max resolution 0.1°F/°C
  • Power 9V Battery
  • Emissivity 0.10 to 1.00 Adjustable
  • Field of View (Distance to Target) 13:1
  • Dimensions 3.2x1.6x6.3" (82x42x160mm)
  • 3 Year Warranty

Unit ship weight: 2 Lbs

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