HI. I'm writing you from Italy. Can you share some tech indication about bulb (type, power), some dimensions (distance between bulb and grill) and the project for the UVC sensor? I would like to do something similar here in italy. Thanks in advance.
Paolo, the bulb is a 254nm 55W mercury vapor bulb. As you already have guessed, distance helps calculate flux. I think the bulb was ~ 15cm from the grill surface. As for the sensor, we used a UV-C specific sensor and hacked a Adafruit UVA/B sensor to get the sensitivity. Check this video for the math: th-cam.com/video/M34E6cs8RT0/w-d-xo.html We are trying to get vendors, parts, and code/assembly out to the maker community soon! But keep asking questions and I'll try to help as much as I can! Brad
Looks like a 55 Gallon, fiber Drum with a 24 inch lid, so the lamps look to be 6 inches from the grill. if you lookup Air or water sanitizing uv , those are usually the bulbs inside and often the replacement bulbs will come up in searches. If you get just the bulb, you will probably have to find the correct ballast and connector for that bulb. If it doesn't say no-ozone, you will need to find the correct size of quartz tube to place around the uv tube, or use it in a very well ventilated area. Make sure you are not exposing your skin or eyes to the light. The tubes will get hot, so don't leave it turned on if you aren't there.
The UVC sensors are like 600 dollars and up, if you find one cheaper, make sure it actually measures UvC (100 to 280 nanometer nm) between 220 and 280 are the areas that are shown to do the best, and these UVC tubes are 253.7 or they will say 254nm.
Aluminum is better at reflecting UV-C light. www.klaran.com/images/kb/application-notes/Using-UV-Reflective-Materials-to-Maximize-Disinfection---Application-Note---AN011.pdf I would suggest adding an on/off switch or even plug the lights into a power strip with a built-in timer. Additionally, I would add some material around the seam of the outer shell to block the UV-C light from getting out as this can be damaging to the eyes and skin.
Hello just a query does the uvc light pass through the wire mesh? Because items placed on the mesh are blocked by the mesh which is not directly coming in contact of the light Do we need to rotate the items to get full sterilization?
Use aluminum tape instead of white paint for better reflection efficiency...
since they use 2 lamps, the reflection isen't the problem.
I love it, I want one
HI. I'm writing you from Italy. Can you share some tech indication about bulb (type, power), some dimensions (distance between bulb and grill) and the project for the UVC sensor? I would like to do something similar here in italy. Thanks in advance.
Paolo, the bulb is a 254nm 55W mercury vapor bulb. As you already have guessed, distance helps calculate flux. I think the bulb was ~ 15cm from the grill surface. As for the sensor, we used a UV-C specific sensor and hacked a Adafruit UVA/B sensor to get the sensitivity. Check this video for the math: th-cam.com/video/M34E6cs8RT0/w-d-xo.html
We are trying to get vendors, parts, and code/assembly out to the maker community soon! But keep asking questions and I'll try to help as much as I can!
Brad
Looks like a 55 Gallon, fiber Drum with a 24 inch lid, so the lamps look to be 6 inches from the grill. if you lookup Air or water sanitizing uv , those are usually the bulbs inside and often the replacement bulbs will come up in searches. If you get just the bulb, you will probably have to find the correct ballast and connector for that bulb. If it doesn't say no-ozone, you will need to find the correct size of quartz tube to place around the uv tube, or use it in a very well ventilated area. Make sure you are not exposing your skin or eyes to the light. The tubes will get hot, so don't leave it turned on if you aren't there.
The UVC sensors are like 600 dollars and up, if you find one cheaper, make sure it actually measures UvC (100 to 280 nanometer nm) between 220 and 280 are the areas that are shown to do the best, and these UVC tubes are 253.7 or they will say 254nm.
I'd love some links to materials or part numbers. Please share 🤠
We are trying to find a consistent source to pass around. We had some luck mismatching vendors but as soon as I find a reliable source I'll share.
Aluminum is better at reflecting UV-C light. www.klaran.com/images/kb/application-notes/Using-UV-Reflective-Materials-to-Maximize-Disinfection---Application-Note---AN011.pdf
I would suggest adding an on/off switch or even plug the lights into a power strip with a built-in timer. Additionally, I would add some material around the seam of the outer shell to block the UV-C light from getting out as this can be damaging to the eyes and skin.
since they use 2 lamps, the reflection isen't the problem.
Hi! How many seconds was the flux or irradiance measured?
Hello just a query does the uvc light pass through the wire mesh? Because items placed on the mesh are blocked by the mesh which is not directly coming in contact of the light
Do we need to rotate the items to get full sterilization?
they need to rotate... but IDK if they know it :D
any Ozone gas from the Unit?
looks dangerous to use