Ultra long wave infrared detectorThere are various requirements for the environment, including temperature, humidity, weather conditions, background radiation, electromagnetic field, wind speed, etc., as follows:

Temperature conditions:Ultra long wave infrared detectorEspecially for photovoltaic detectors based on narrow bandgap semiconductor materials such as HgCdTe, the dark current is high at room temperature, making it difficult to effectively identify signals. Therefore, it is usually necessary to work in low-temperature environments, such as -200 ℃ and below, to effectively control dark current and improve detection performance. However, there are also some ultra long wave infrared detectors that use uncooled technology and can operate at room temperature, but their sensitivity may be relatively low.

Humidity conditions: High humidity environments may cause condensation of water droplets on the surface of the detector, affecting the transmission of infrared radiation and the performance of the detector. Therefore, it is advisable to avoid using ultra long wave infrared detectors in environments with excessive humidity, and generally require a relative humidity of no more than 85%.

Weather conditions: Severe weather conditions such as thunder, rain, fog, and snow may affect the transmission of infrared radiation and the performance of detectors. For example, fog and snow may increase the scattering and absorption of infrared radiation, reducing the sensitivity of the detector. Therefore, testing should be conducted as much as possible on cloudy days, at night, or 2 hours after sunset on sunny days.

Background radiation: There should be a balanced background radiation around the detected equipment to avoid interference from nearby thermal radiation sources as much as possible. When certain devices are detected, they should also avoid infrared radiation from human heat sources to ensure the accuracy of the detection results.

Electromagnetic field: Strong electromagnetic fields may affect the normal operation of detection equipment such as infrared thermal imagers, resulting in distorted detection results. Therefore, detection should avoid strong electromagnetic field environments.

Wind speed: Excessive wind speed may cause the heat of defective equipment to be rapidly dissipated by the wind, increasing the heat dissipation coefficient of exposed conductors and contacts, resulting in a decrease in the temperature of defective equipment and affecting the accuracy of detection results. Therefore, infrared detection work should not be carried out in environments with wind speeds exceeding 0.5m/s.