The infrared thermometer measures temperature at a distance, without contact.
In the car repair shop, this is a quick tool for diagnosing overheating in engines or other components.
In this article, learn how to use this tool, what accuracy to expect, where to buy it, and how much it costs.
What Is An Infrared Thermometer?
An infrared thermometer, also known as a digital thermometer, is an instrument that measures temperature from a distance, without physical contact.
It uses optical sensors to capture the thermal radiation emitted by a surface and shows the value on a digital display.
Many current models of infrared digital thermometers are compact, accurate and easy to use, ideal for technical environments such as auto repair shops.
What Is An Infrared Thermometer Used For?
An infrared thermometer allows you to:
- Detect overheating;
- Monitor the temperature of the braking system;
- Check the uniformity of the cooling system;
- Measure the temperature of bearings or oil.
How Does An Infrared Thermometer Work In A Car Repair Shop?
In a workshop, this instrument allows you to point the laser beam at the surface to be measured. The sensor then instantly captures the temperature.
It is ideal for identifying, for example, hot spots in the engine, cooling system, and brake discs.
What Are The Main Applications Of This Type Of Thermometer In Automotive Mechanics?
In an auto repair shop, an infrared thermometer allows you to:
- Monitor the temperature of the engine block and exhaust;
- Detect faults in the radiator or thermostat;
- Inspect electric motors and bearings;
- Assess the heat generated in discs and drums.
How To Measure Engine Temperature With An Infrared Thermometer?
To perform the tasks accurately, you need to:
- Start the engine and let it reach operating temperature;
- Point to the desired area (e.g., covers or manifolds);
- Hold the thermometer about 20 cm from the area to be measured;
- Read the value on the display;
- Compare with normal values (e.g., the normal manifold temperature is approximately 200°C).
Is The Infrared Thermometer Reliable?
Yes, if used correctly. You must pay attention to the indicated distance and the adjusted emissivity to obtain reliable results.
In addition, you should clean the lens regularly and avoid measuring through glass or plastic.
Are Infrared Thermometers Accurate?
The accuracy of an infrared thermometer varies between ±1°C and ±3°C, depending on the model and emissivity.
Some professional models guarantee up to ±1°C.
Is It Necessary To Calibrate The Infrared Thermometer?
Yes, because calibration ensures reliable readings.
This is done using reference blocks with a known temperature or a certified contact thermometer.
Where Can I Buy A Certified Infrared Digital Thermometer?
To ensure accurate temperature measurement, you should only buy certified and properly calibrated thermometers. You can purchase infrared thermometers from one of KROFTools’ official retailers.
Infrared Thermometer Available In The Kroftools Catalog
Yes, KROFtools offers a thermometer with wide ranges, high accuracy and specialized technical support.
The Infrared Thermometer Aa Battery 50~550 Celsius (ref. 9630) is equipped with a color LCD screen and uses a 12-point targeting system, which helps to accurately identify the measurement area.
The emissivity is adjustable between 0.10 and 1.00, allowing you to adapt the reading to the type of surface.
In addition, the thermometer offers a fast response (less than 0.5 seconds) and includes useful functions such as data storage, automatic shutdown and low battery alert.
It is therefore a practical and efficient tool for temperature measurements in automotive or industrial contexts.
How Much Does A Professional Digital Infrared Thermometer Cost?
The prices of infrared thermometers vary depending on their accuracy, measurement range and features.
On average, prices range from tens to hundreds of dollars.
How To Choose The Best Infrared Thermometer For My Car Repair Shop?
Choosing the best model depends on the type of work performed in the car repair shop and the frequency of use.
These are the main factors to consider:
1. Measurement Range
Ensure that the thermometer covers typical engine, brake and exhaust temperatures (up to 600°C is ideal).
2. Accuracy
Models with a margin of error of less than ±1.5°C are more reliable in technical environments.
3. Adjustable Emissivity
This is an essential requirement for measuring metal surfaces with greater accuracy.
4. Fast Response Time
It should show results in less than 1 second.
5. Robustness And Ergonomics
Choose models with rubber protection, a clear display and a comfortable trigger for continuous use.
6. Certification And Warranty
Give priority to digital infrared thermometers with certification and technical support.
What Care Should I Take With My Infrared Thermometer?
Although they are robust devices, infrared thermometers require some care to maintain accuracy and durability, such as:
- Store the device in a dry place, away from dust and moisture (e.g., in a tool cabinet);
- Avoid drops, impacts or exposure to extreme temperatures;
- Clean the lens regularly to ensure reliable readings;
- Use new batteries and make sure the display is legible;
- Do not point the beam at the eyes or mirrored surfaces:
- Follow the manufacturer’s instructions, especially regarding measurement distance and emissivity;
- Calibrate the equipment whenever possible, or if you suspect variations in measurements.
With these precautions, your thermometer will last longer and be more accurate in the car repair shop environment.
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