[PLUG-TALK] Rental air monitors?
Keith Lofstrom
keithl at gate.kl-ic.com
Fri May 18 04:55:10 UTC 2012
> "Keith" == Keith Lofstrom <keithl at gate.kl-ic.com> writes:
Keith> Are there any places near Portland that rent handheld indoor
Keith> air monitors by the hour or day? There's a place in Bellevue
Keith> WA that rents them by the week for $$$$, which is about two
Keith> more $ than I can afford.
On Thu, May 17, 2012 at 08:37:12PM -0700, Russell Senior wrote:
> Have you seen this?
>
> http://www.co2meter.com/products/c20-sensor-development-kit
Indeed I have, some people are hacking their sensors on Arduinos.
I do not have the money or the time, and I don't want to end up
owning something I cannot calibrate. Their most sensitive
sensor is "10,000ppm, 1%" which means 100 ppm sensitivity.
The commercial handhelds measuring indoor air quality are 10ppm,
typically measuring between 300 and 1000 ppm. Higher than that
can cause headaches and other vague problems.
One issue with these meters is making sure they compensate for
temperature and moisture. That makes them complicated, with
subsidiary sensors and a lot of tweaking and calibration.
I would definitely consider CO2meter.com for measuring soil CO₂.
If I had even more money and time. But right now I am busting
my ass working on Server Sky (with a payoff years out), and my
wife's office otherwise (with a payoff in love, money not so
much). Watching the nickles and the clock.
I avoid owning rarely used tools that I can rent from others
who will store and maintain and calibrate them for me. I've
got too much rarely used stuff in the basement already.
Keith
--
Keith Lofstrom keithl at keithl.com Voice (503)-520-1993
KLIC --- Keith Lofstrom Integrated Circuits --- "Your Ideas in Silicon"
Design Contracting in Bipolar and CMOS - Analog, Digital, and Scan ICs
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