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Working principle and use of infrared thermometer

Jun 26, 2024

Working principle and use of infrared thermometer

 

The infrared thermometer consists of an optical system, a photodetector, a signal amplifier, signal processing, display output, and other components. The optical system gathers the infrared radiation energy of the target in its field of view, and the infrared energy is focused on the photodetector and converted into the corresponding electrical signal. This signal is then converted into the temperature value of the measured target.


The characteristics of using an infrared thermometer:
1. The infrared thermometer can quickly provide temperature measurement. Within the time of reading a leakage connection point with a thermocouple, the infrared thermometer can almost read the temperature of all connection points. Additionally, due to the solid and lightweight nature of the infrared thermometer (All lighter than 10 ounces), and easy to put in a leather case when not in use. So you can carry it with you when watching in the factory and conducting daily inspection work.


Another advantage of infrared thermometers is that their accuracy is usually within 1 degree. This performance is particularly important when you perform preventive maintenance, such as monitoring harsh production conditions and special events that may cause equipment damage or shutdown, which is equivalent to reducing revenue. To prevent such losses, scan all on-site electronic devices - circuit breakers, transformers, fuses, switches, buses, and distribution boards - to find hotspots. The use of an infrared thermometer can quickly detect small changes in operating temperature, solve problems at their inception, and reduce expenses and maintenance scope caused by equipment failures.


3. Safety is an important benefit of using an infrared thermometer. Unlike contact thermometers, infrared thermometers can safely read target temperatures that are difficult to access or unreachable. You can read the target temperature within the allowable range of the instrument. Non contact temperature measurement can also be carried out in areas that are unsafe or difficult to measure, such as near steam valves or heating furnaces, without the risk of accidentally burning fingers during contact temperature measurement. Measuring the temperature of the supply/return air outlet 25 feet above the head is as easy as measuring it at hand. Raytek infrared thermometers all have laser aiming for easy identification of target areas. With it, your work has become much easier.


How to measure temperature with an infrared thermometer? The following are three temperature measurement techniques for non-contact thermometers:
Point measurement: Measuring the overall surface temperature of an object, such as an engine or other equipment


Temperature difference measurement: Comparing the measured temperatures of two individual points, such as connectors or circuit breakers


Scanning measurement: detecting changes in targets over a wide or continuous area. Like refrigeration pipelines or distribution rooms.


The main applications of infrared thermometers in various fields
Infrared thermometers have been proven to be effective tools for detecting and diagnosing electronic device faults. It can save a lot of expenses. With an infrared thermometer, you can continuously diagnose electronic connection problems and detect the functional status of the uninterruptible power supply (UPS) by searching for hotspots at the output filter connection on the DC battery. You can inspect the battery components and power distribution panel wiring terminals, switch gears or fuse connections to prevent energy consumption; Due to the heat generated by loose connectors and combinations, infrared thermometers can help identify insulation faults in circuit breakers or monitor electronic compressors; Daily scanning of transformer hotspots can detect cracked windings and wiring terminals.

 

5 digital infrared thermometer

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