The Infrared Thermal Imager is a high-precision thermal imaging, which can measure the temp of target object online in real time, output thermal image video and check the over-temp condition. Going with different matching platform software, it can be suitable for different usage modes (such as power device temp measurement, fire alarm, human body temp measurement and screening). This document only introduces the usage modes for human body temp measurement and screening.
The imager employs a USB supply power and transmits through one USB line, realizing convenient and rapid deployment. Based on on-site deployment of clients, the imager can carry out temp compensation varying with environment changes voluntarily without continuous blackbody calibration and control the error within the range of ±0.3°C (±0.54°F).
- When the temp exceeds the threshold, the area temp measuring box will turn red to give an alarm.
- Blackbody included for accurate measurement
Benefits of Thermal Imaging Systems
- The person who handles the thermal imaging system is not required to be physically close to the person being evaluated. In fact, the person who handles the thermal imaging system could be in a different area or room.
- The thermal imaging system may measure surface skin temperature faster than the typical forehead or oral (mouth) thermometer that requires a close distance or physical contact with the person being evaluated.
- Scientific studies show that, when used correctly, thermal imaging systems generally measure surface skin temperature accurately.
Proper Use of Thermal Imaging Systems
The person who handles the system should follow all manufacturer instructions to make sure the system is set up properly and located where it can measure surface skin temperature accurately.
The person who handles the system should be trained to properly prepare both the location where the system will be used, and the person being evaluated, to increase accuracy. For details, see the standards and scientific papers listed under References below.
Q: Are thermal imaging systems effective for screening people for fevers in places like nursing homes, airports, and hospital emergency rooms?
A: When using a thermal imaging system, it is important to assess whether the system will provide the intended results in high throughput areas. We understand that these devices are being used for initial temperature assessment and triage of individuals for elevated temperatures in medical and non-medical environments. They should not be used for measuring temperatures of many people at the same time in crowded areas, in other words “mass fever screening” is not recommended.
Based on where the system will be used, there may be more appropriate methods to initially assess and triage people, especially if there is a risk that infected people would not be identified right away. For example:
- In airports, workplaces, grocery stores, concert venues, or other areas where you are trying to screen large groups of people for mass fever screening, diagnostic testing may be too difficult because of the time and costs needed to screen and get results. These systems will likely miss most individuals with COVID-19 who are contagious. Thermal imaging systems could be considered as one method for initial temperature assessment in these types of settings when used as part of a larger approach to risk management.
- In a hospital emergency room, a thermal imaging system may help to quickly assess temperature and triage patients to determine who needs more evaluation or isolation.
Below image shows the principle of solution deployment, the blackbody to the thermal camera is the measurement line, the people cannot cross the measurement line and go close to the thermal camera, or the measurement value will be higher than the real temperature (visa vera).
Why do we need a blackbody?
- To make sure you get the most accurate reading as possible. You don’t want to be cutting short on equipment to maximize the accuracy of screening.
- Most thermal camera accuracy is +/-2°C, If you use a blackbody, it can increase the accuracy to +/- 0.3°C. Click here to read more.
According to the needs of infrared radiation thermometer, forehead thermometer and thermal imager calibration, we developed the B01 blackbody. The integrated structure of the furnace body and the temperature control instrument is used, and the appearance design is novel. The heating body is isolated from the casing. Even if the black body works at 50°C, the casing is not affected. In order to prolong the service life of the blackbody furnace, the software voltage
limiting method is adopted, and no high-power transformer is needed.
The black body radiation source is composed of three parts:
• Radiation surface and cavity are made of special materials. The radiating surface is flat type, there is a temperature measuring hole at the bottom of the cavity, a Class A PT100 platinum resistance sensor is placed, and a high emissivity coating is applied on the surface of the cavity. The temperature control sensor is placed in the heating body. If the PID is selected properly, the temperature rise speed is fast and the temperature stability is good; there is an insulation layer and a protective shell outside the cavity.
• Radiation box includes radiator and automatic temperature dissipation device.
• Intelligent temperature control and temperature measurement device, one instrument
can control temperature and measure temperature.