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Air disinfection with an efficiency of 99.9% is guaranteed by the operation of all eight UV lamps, electric sensors of the operating current of UV lamps and an integrated microprocessor that continuously monitors the serviceability of all systems. In case of a malfunction, an audible and visual notification is made.

Bactericidal recirculators DESAR-7 and DESAR-5 provide the highest degree of disinfection (99.9%) and meet the highest requirements for the air condition in operating rooms, burn rooms, maternity wards, i.e. where complete sterility is required. The capacity is 100±10 m3/h. The mobile model (DESAR-7) and the wall model (DESAR-5) are made in the same housing, have the same technical and biomedical characteristics.

The principle of operation of the device The principle of operation of the irradiator is based on the conversion of DC electrical energy into a normalized flow of ultraviolet radiation in the optical wavelength range of 350 ... 400 nm with a maximum at a wavelength of 365 nm. Design features and advantages The irradiator is a lantern consisting of an ultraviolet diode placed behind the focusing system, connected to a DC voltage converter, which supports the optimal mode of starting and functioning of the LED. Structurally, the irradiator is made in a lightweight duralumin housing, in the front of which there is a focusing system with an ultraviolet LED. The housing is equipped with a carrying strap. There is also a power on/off button on the case. As the power source of the irradiator, a lithium-ion battery of type 18650 with a nominal voltage of 3.7 V or 3 AA batteries with a voltage of 1.5V. are used. An ultraviolet LED is used as a source of ultraviolet (UV) radiation. The use of an LED distinguishes the UFO-3-20F irradiator from similar devices using UV lamps, it provides: high reliability and durability; variable diameter of the UV radiation zone; low current consumption and long continuous operation time; instant readiness for the first and subsequent turn-on; low weight, compact; high radiation intensity; stability of the characteristics of the irradiator, both during operation and throughout its entire life; wide operating temperature range. Scope of application The UV-3-20F irradiator (lantern) is used for ultraviolet irradiation of the surface of various parts, assemblies and mechanisms during flaw detection by fluorescent methods of non-destructive testing at machine-building enterprises, chemical and petrochemical industries, railway, automobile, water and aviation transport, during the laying and operation of pipelines, in construction, agriculture. The device can be used to check the quality of welds and internal surfaces of closed tanks. The luminescent method makes it possible to ensure high brightness and contrast of the indicator pattern, and, consequently, high sensitivity, especially on parts and products with a dark surface. Technical specifications The range of radiated wavelengths, nm 350...400 Ultraviolet irradiation at a distance of 300 mm, W/m2, not less than 20000 with a diameter of the irradiated area of 100 mm not less than 2000 Power supply from a lithium-ion battery type 18650 voltage of 3.7 V, or 3 AA batteries with a voltage of 1.5V Continuous operation time without recharging the battery, h, at least 4 Maximum irradiance at the wavelength, 365 nm Dimensions (diameter x length) 40 x 150 Weight (without batteries), kg, not more than 0.2