How to Use Non Contact Infrared Thermometer

Do you know the How to Use Non Contact Infrared Thermometer. A non-contact infrared thermometer is a thermometer that uses infrared technology to measure an object or person’s thermal radiation without the need for any physical contact to be made.

This is incredibly useful when measuring the temperature of mechanical and electrical equipment or when dealing with sick patients.

How to Use Non Contact Infrared Thermometer

Using a non-contact thermometer is an effective and convenient way to read the external temperature of an object or person from a distance.

These types of thermometers use infrared energy to detect thermal radiation coming from the surface of an object or person, making them non-invasive tools that are easy to use if you know what you’re doing.

In this article, we have provided an ultimate guide for non-contact infrared thermometers to help you understand their benefits and how to use them properly. Keep reading to learn more!

How to Use Non Contact Infrared Thermometer?


Non-contact infrared thermometers are incredibly simple to use when accounting for nearby objects and a particular material’s emissivity. Here is a step by step guide for how to operate a non-contact thermometer effectively for an accurate temperature reading:

1. Clean the thermometer with a soft, damp cloth and 70% alcohol

2. Place the thermometer at least three inches away from the person or object you are measuring

3. Point the thermometer at the center of the person or object you are measuring

4. Press the power button to turn the temperature on, and wait for the temperature reading to appear

5. Once the temperature reading appears, you can record it or compare it to a reference temperature

6. When you are finished, turn off the thermometer and clean it again with a soft, damp cloth and 70% alcohol

Advantages of Non Contact Infrared Thermometer Over Contact Thermometer

Contact and non-contact thermometers read temperatures differently and both have their uses.

Advantages of Non-Contact Infrared Thermometer

The main difference is that a contact thermometer requires physical contact because it uses conduction to measure an object or person’s internal temperature.

Alternatively, a non-contact thermometer using infrared technology to measure the thermal energy emitted from an object or person’s surface, reading the external temperature.

There are several advantages to using a non-contact thermometer over a contact thermometer, including:

1. The ability to use the thermometer from a distance, without having to make physical contact with the person or object

2. The ability to measure an object that is in motion or that has moving parts

3. There is never a risk of contamination of the thermometer because it does not touch the person or object

4. The ability to measure the temperature of an object that is physically inaccessible

5. The ability to measure temperature accurately and quickly without any wait time

We hope that this ultimate guide for non-contact infrared thermometers helped you better understand the benefits of using these tools and how to use them in a way that is accurate, safe, and incredibly simple.

How Accurate Are Non Contact Infrared Thermometers?

Infrared thermometers are extremely accurate when being used correctly. Emissivity is measured on a scale from 0.00 – 1.00.

When accounting for emissivity and being aware of the nearby object that might interfere with a temperature reading, you can rely on the accuracy of a non-contact thermometer’s temperature reading.


Thermometers that feature adjustable emissivity rather than fixed emissivity, such as the ThermoPro TP30 Digital Infrared Thermometer Gun, are the most accurate and dependable option.

This feature allows the user to adjust the emissivity to account for whatever type of material they are trying to measure the temperature of. You will be able to use an adjustable thermometer on just about any surface material and know that your reading is precise.

How Does a Non Contact Infrared Thermometer Work?

The non-contact thermometer is simply pointed in the direction of the person or object from a distance, and a laser emitted from the thermometer helps the user find a precise target to measure.

Then, the thermometer measures the thermal radiation coming off of the object it is pointed at and displays a temperature reading on the screen. It’s as simple as that!

Because a non-contact thermometer reads thermal radiation, it measures the object’s surface temperature rather than the internal temperature. It does not penetrate the surface, but rather gathers information by sensing the heat coming off of the object itself.

How Does a Non Contact Infrared Thermometer Work?

The non-contact thermometer is simply pointed in the direction of the person or object from a distance, and a laser emitted from the thermometer helps the user find a precise target to measure.

Benefits of NCITs

The non-contact approach may reduce the risk of spreading disease between people being evaluated

Easy to use

Easy to clean and disinfect

Measures temperature and displays a reading rapidly

Provides the ability to retake a temperature quickly

Limitations of NCITs

How and where the NCIT is used may affect the measurement.

Proper Use of NCITs

The person using the device should strictly follow the manufacturer’s guidelines and instructions for use for the specific NCIT being used.

The manufacturer’s instructions for use typically include the following information and recommendations for proper use:

Preparing the Environment and NCIT

The use environment may impact the performance of the NCIT. Instructions will typically include recommendations for optimal use, such as the following:

Use in a draft-free space and out of the direct sun or near radiant heat sources.

Determine if conditions are optimal for use. Typically, the environmental temperature should be between 60.8-104 ºF (16-40 ºC) and relative humidity below 85 percent.

Cleaning Between Uses

For cleaning NCITs between uses, follow the instructions in the Cleaning and Disinfecting section of the product instructions.

Preparing the Person being Evaluated

In preparation for taking a temperature measurement with an NCIT, the person using the NCIT should typically ensure that.

The test area of the forehead is clean, dry, and not blocked during measurement.

Using the NCIT

In particular, the following are typical instructions for NCIT usage.

Hold the NCIT sensing area perpendicular to the forehead and instruct the person to remain stationary during measurement(s).

The distance between the NCIT and forehead is specific to each NCIT. Consult the manufacturer’s instructions for correct measurement distances.

Do not touch the sensing area of the NCIT and keep the sensor clean and dry.

We also have a detailed review on Best Axillary Thermometer in case if you want to check that out! and other articles.

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