Re: Low cost sensors (gas sensors)?
- From: "Alex Gibson" <news@xxxxxxxx>
- Date: Tue, 31 Oct 2006 08:55:11 +1100
"Alex Gibson" <news@xxxxxxxx> wrote in message
news:4qikr8FmqearU1@xxxxxxxxxxxxxxxxx
Bit stuck trying to find some low/lower cost gas sensors
especially C02.
By lower cost for gas sensors I mean sub US$200 if possible.
For an existing application we are using the sensata/klixon (exTI)
4GS series but in small quantities are just way to expensive and to
large.
A C02 sensor with 5 - 12% accuracy would be fine.
Need to measure 0 - 2000ppm , 0 - 5000ppm and 0 - 10000ppm.
The 4GS when calibrated are 3.75% accurate below 1500ppm.
They can do 0 -2000 or 0 -5000.
Part of the problem is the low quantity we are using
(under 100 of each type per year) and some distributors(quite a lot)
don't have pricing or bother giving pricing for this small an amount.
Thats even though even a small order can be in the tens of thousands as
some of the senors cost up to US$1500 ea.
Mostly for air quality monitoring (indoor and outdoor) and water quality.
For temperature and relative humidity the sension sht1x series
are very good for the price.
Accelerometers - reasonable range at reasonable pricing
from analog and freescale and fairly easy to get in small quantities
for vibration monitoring.
And if you get stuck with a distributor , there is always sparkfun.com
Any suggestions for low cost sensors and where to buy them
in small quantities greatly appreciated.
Thank you
Alex Gibson
Great thank you to everyone that replied.
Given me a few good leads.
Thank you
Alex
.
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