carbon monoxide detectors best price image
wHoSaIdThA
What is the price to install and the price per month?
Answer
My suggestion would be to ask around locally. Try to find a company that is small enough to care but with enough track history to prove their ability. The average install rate for a full house is anywhere from 1200 upwards. Depening on the scope of protection, if you want smoke detectors, carbon monoxide, motion, glassbreak, number of keypads, number of contact, difficulty of installation etc.
Window screens are a good idea, I haven't really seen them around for a number of years and I do remember there being the occasional issue with wire tears, they can be fairly delicate.
Typically monitoring rates around here (Canada) tend to be around the $25 per month range. There are a few companies that will go lower to build up a sellable acount base but from customer feedback, their service tends to be fairly lacklustre.
I have written a number of articles on security systems and home security in general, they can be found on my website at http://www.keepsafesystems.ca. Some articles of interest might be protection101, false alarm info and there is an article on the truth about wireless "security systems" in the archive. Wireless systems are definately something to avoid at all costs. a qualified alarm installer should be able to hardwire almost anything.
Good Luck
My suggestion would be to ask around locally. Try to find a company that is small enough to care but with enough track history to prove their ability. The average install rate for a full house is anywhere from 1200 upwards. Depening on the scope of protection, if you want smoke detectors, carbon monoxide, motion, glassbreak, number of keypads, number of contact, difficulty of installation etc.
Window screens are a good idea, I haven't really seen them around for a number of years and I do remember there being the occasional issue with wire tears, they can be fairly delicate.
Typically monitoring rates around here (Canada) tend to be around the $25 per month range. There are a few companies that will go lower to build up a sellable acount base but from customer feedback, their service tends to be fairly lacklustre.
I have written a number of articles on security systems and home security in general, they can be found on my website at http://www.keepsafesystems.ca. Some articles of interest might be protection101, false alarm info and there is an article on the truth about wireless "security systems" in the archive. Wireless systems are definately something to avoid at all costs. a qualified alarm installer should be able to hardwire almost anything.
Good Luck
What can i do in order to measure gasses in a container?
Sky
I'm doing a science fair project and i need to know how to measure simple gasses in a container such as oxygen and carbon. Does anyone know of a machine or a way i could use to measure this and could you give me an option that is not so expensive or that i could just go to a lab and they would help me please?
Answer
It depends on the details. You need to be much more specific. Telling the difference between 100% O2 vs 100% CO2 is fairly easy. Telling the difference between air that has 21% O2 and air that has 20% O2 is much more difficult.
There are certainly machines that can analyze composition of gases. All of these machines are rather expensive and rather complicated (such that, even if you knew someone who had one, it is probably impractical to borrow it for the science fair).
If you have a local university with a chemistry department, they probably have some of these types of instruements. Universities should certainly be interested in education, so, if you ask politely and explain why you are asking, you might find a professor who would help a potential future chemistry student.
There are also commercial labs which have such machines and who perform chemical analysis for hire. If you have one of these laboratories in your town, it might be possible to arrange some analyses but you have to be very specific about what you are analyzing and how you will get your samples to the lab, etc. If you are going to pay for the analysis, it might be ~ $100 per sample.
Even if there is not one locally, you could probably talk (again politely) to a chemist at one of the commercial labs who might be interested in helping a promising young chemist with some free advice. Google "chemical analysis laboratory oxygen carbon gas".
If you provide more details on exactly what you plan to do, there may be other options. For example, if your experiment involves creating CO (carbon monoxide), you can buy household CO monitors (look like a smoke detectors) which will sound an alarm if the CO concentration increases above a certain level. These are available at your local hardware store and the prices are reasonable, roughly $30. If your experiment involves creating CO2 and, for example, it would consume all the O2 inside your vessel, leaving ~80% N2 and ~ 20% CO2, then things will burn in the presence of O2 but will not burn if there is no O2 available.
Good luck
It depends on the details. You need to be much more specific. Telling the difference between 100% O2 vs 100% CO2 is fairly easy. Telling the difference between air that has 21% O2 and air that has 20% O2 is much more difficult.
There are certainly machines that can analyze composition of gases. All of these machines are rather expensive and rather complicated (such that, even if you knew someone who had one, it is probably impractical to borrow it for the science fair).
If you have a local university with a chemistry department, they probably have some of these types of instruements. Universities should certainly be interested in education, so, if you ask politely and explain why you are asking, you might find a professor who would help a potential future chemistry student.
There are also commercial labs which have such machines and who perform chemical analysis for hire. If you have one of these laboratories in your town, it might be possible to arrange some analyses but you have to be very specific about what you are analyzing and how you will get your samples to the lab, etc. If you are going to pay for the analysis, it might be ~ $100 per sample.
Even if there is not one locally, you could probably talk (again politely) to a chemist at one of the commercial labs who might be interested in helping a promising young chemist with some free advice. Google "chemical analysis laboratory oxygen carbon gas".
If you provide more details on exactly what you plan to do, there may be other options. For example, if your experiment involves creating CO (carbon monoxide), you can buy household CO monitors (look like a smoke detectors) which will sound an alarm if the CO concentration increases above a certain level. These are available at your local hardware store and the prices are reasonable, roughly $30. If your experiment involves creating CO2 and, for example, it would consume all the O2 inside your vessel, leaving ~80% N2 and ~ 20% CO2, then things will burn in the presence of O2 but will not burn if there is no O2 available.
Good luck
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