water level sensors
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I found an article which covers the method I was looking for, and I'm
suggesting it for use in a none contact method of measuring the level
of liquid in a tank. The article is by Scott Edwards and was in the
May 1997 issue. This method uses very little in the way of hardware,
it uses in additon to the Basic Stamp, (Scott used on of his
"Counterfit Stamps") a 4060 cmos Chip, 2 resisitors, 1 capacitor, a
LCD display, and 2 lengths of adhisive back metal foil. Scott used
aluminum foil as it is available from a hardware store to repair
storm/rain gutters. He Mentions that Digikey stocks adhisive backed
copper foil. I've found in the past some craft stores that support
"Stained Glass" will have copper foil also. Now the great part Nuts
and Volts Has the article avialable for download in PDF format on
their site. The Link is on their FTP tab, under "Stamp Applications"
scroll down unil you find the May 1977 listing. It's in PDF format,
and I'm putting 1 together for some applications I nedd it for.
Bill HIgdon
suggesting it for use in a none contact method of measuring the level
of liquid in a tank. The article is by Scott Edwards and was in the
May 1997 issue. This method uses very little in the way of hardware,
it uses in additon to the Basic Stamp, (Scott used on of his
"Counterfit Stamps") a 4060 cmos Chip, 2 resisitors, 1 capacitor, a
LCD display, and 2 lengths of adhisive back metal foil. Scott used
aluminum foil as it is available from a hardware store to repair
storm/rain gutters. He Mentions that Digikey stocks adhisive backed
copper foil. I've found in the past some craft stores that support
"Stained Glass" will have copper foil also. Now the great part Nuts
and Volts Has the article avialable for download in PDF format on
their site. The Link is on their FTP tab, under "Stamp Applications"
scroll down unil you find the May 1977 listing. It's in PDF format,
and I'm putting 1 together for some applications I nedd it for.
Bill HIgdon
Comments
watertanks is ultrasound. The device is mounted on top, and measures
the time it takes the ultrasound to reflect back from the water
level. Very much like these cheap "tapeless" tapemeasures or car
parking distance warning devices. The device I saw was about the size
of a cigarette box, an option was an RF transmitter for wireless
level data transmission. Seems an ideal stamp application to me.
Chris
tank levels for our public swimming pools.
Here's the webpage
http://www.inotek.com/Catalog/flowline1pfl.html
They also talk about capacitive sensors - which is why I'm investigating the
aluminium foil gizmo from nuts & volts - sounds interesting.
Original Message
From: "cba_melbourne" <chris.banninger@o...>
To: <basicstamps@yahoogroups.com>
Sent: Saturday, July 12, 2003 2:09 AM
Subject: [noparse][[/noparse]basicstamps] Re: water level sensors
> Another method used commercially to measure levels in large
> watertanks is ultrasound. The device is mounted on top, and measures
> the time it takes the ultrasound to reflect back from the water
> level. Very much like these cheap "tapeless" tapemeasures or car
> parking distance warning devices. The device I saw was about the size
> of a cigarette box, an option was an RF transmitter for wireless
> level data transmission. Seems an ideal stamp application to me.
> Chris
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