Halton Sentinel air filtration units are high-capacity UVGI and MERV filter devices that can be used in any indoor space where there is a risk of virus spread. Halton Sentinel reduces the risk of airborne infections while creating a clean and safe indoor environment for students, teachers, and staff.
The device has highly efficient UV resistant air filters with a rating of MERV 13. Behind these filters are safe UV-C bulbs that do not produce any respiratory irritant ozone. These particular UV-C bulbs operate at the 254-nanometer wavelength. This wavelength is critical for its germicidal properties.
Although the UV-C bulbs are 99% efficient in neutralizing viruses, this doesn’t mean that by deploying one of these units, 99% of pathogens present will be destroyed. What is important to understand is that Halton can calculate the unit’s clean air delivery rate (CADR) and the probable reduction in the airborne infections by using a Wells-Riley mathematical model associated with the airborne transmission of respiratory diseases. Halton’s salespeople can go into greater detail on what the equation is all about, but in its most basic terms, it takes into account the number of people in the room, the intensity of the UV-C bulbs in the device, and the time the air is exposed to the bulbs.
For example, a typical classroom of 25 students has a ventilation rate of 250 CFM (118 l/s), which is 10 CFM (4.7 l/s) of outside air per student. Adding 1000 CFM (472 l/s) of clean disinfected air reduces the probability of airborne infection by 4.4 times. Fewer people or more Halton Sentinel units in the room would decrease the probability of airborne infection even more. Other infection probability rates can be calculated by application and occupancy.
Halton Sentinel consists of a touch screen controller that provides indicator lights to show the unit’s fan operation and speed. There are three fan speeds. Halton Sentinel is rated at 55 dB when operating at its medium airflow setting, which is about the loudness of everyday conversation. The unit is available with all international voltage ranges (100-130V, 200-240V, 50/60 Hz). It also comes complete with a 120/1 6’ cord and plug set.
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