Good Morning,
I am going to build a device to detect the physical state of water. I came up with an idea, that the easiest solution is to measure the intensity of the reflected wave, which length is 4150nm. According to http://www.nature.com/nature/journal/v439/n7073/fig_tab/nature04415_F1.html there is a significant difference in absorption of liquid and solid water. The device is created for ordinary applications, so it doesn’t need to be as sensitive as ones for laboratory use. I found that there is a possibility to buy a thermopile with 4.3 μm band-pass filter, but there is a lack of 3050nm detectors. The device should also have the second reference detector, but I don’t know which wavelength will be the most desirable. Another point is selection of IR emitter that will match the detectors, I am not sure which one should I buy.
Or maybe there is a completely different solution that is easier/better than presented above?
I thought about opto elements below:
http://www.hamamatsu.com/jp/en/L13201-0430C.html
http://www.hamamatsu.com/jp/en/product/category/3100/4007/4219/T11361-01/index.html
http://www.hamamatsu.com/jp/en/product/category/3100/4007/4219/T11361-05/index.html
Do you think it will work?
Best regards,
Krystian
I am going to build a device to detect the physical state of water. I came up with an idea, that the easiest solution is to measure the intensity of the reflected wave, which length is 4150nm. According to http://www.nature.com/nature/journal/v439/n7073/fig_tab/nature04415_F1.html there is a significant difference in absorption of liquid and solid water. The device is created for ordinary applications, so it doesn’t need to be as sensitive as ones for laboratory use. I found that there is a possibility to buy a thermopile with 4.3 μm band-pass filter, but there is a lack of 3050nm detectors. The device should also have the second reference detector, but I don’t know which wavelength will be the most desirable. Another point is selection of IR emitter that will match the detectors, I am not sure which one should I buy.
Or maybe there is a completely different solution that is easier/better than presented above?
I thought about opto elements below:
http://www.hamamatsu.com/jp/en/L13201-0430C.html
http://www.hamamatsu.com/jp/en/product/category/3100/4007/4219/T11361-01/index.html
http://www.hamamatsu.com/jp/en/product/category/3100/4007/4219/T11361-05/index.html
Do you think it will work?
Best regards,
Krystian