Coldbreak Brewing Giveaway - Open to All!

Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Ultrasonic liquid level scored off eBay!
Reply
 
Thread Tools
Old 02-20-2011, 10:46 PM   #1
TheFlyingBeer
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2007
Location: Catonsville, MD
Posts: 425
Liked 16 Times on 15 Posts
Likes Given: 3

Default Ultrasonic liquid level scored off eBay!

Check out the new toy I purchased for only $0.99 + $10s/h on ebay (retailed for $300+).



This sensor is supposed to be used to monitor fuel/water/waste tanks in yachts. I am going to use it to measure the liquid level of my new HLT.



The bottom of the unit has the ultrasonic head which sends out a series of pulses then listens for the pulses to return after bouncing off the liquid. It measures the time between the pulses to determine distance, and therefore liquid level. The sensor performs all the math and temperature correction.



The wood block is a simple test fixture I put together to see if the sensor actually functions... I found it works perfectly!!

As the liquid rises from empty to full the sensor outputs current from 4 to 20mA. I put a 250ohm resistor in series with the output and measure the voltage across it. When my HLT is empty it measures 1V and when it is full I measure 5V. Couldn't be easier to interface to a microcontroller. I plan to mount it to a pot lid that I haven't purchased yet. Best $11 ever.


__________________

Primaries: Air
Secondaries: Lakefront India Brown Ale

On Tap 1: Rootbeer, On Tap 2: NB White ouse Honey Ale, On Tap 3: Nitrogen, On Tap 4: Air, On Tap 5: Air
On Deck: DIPA, Imp Stout, Porter, Wheat, Black IPA

"No sense having empty carboys around when full ones take up just as much space. " - Me
TheFlyingBeer is offline
 
Reply With Quote
Old 02-20-2011, 11:51 PM   #2
badmajon
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2010
Location: Augusta, GA
Posts: 837
Liked 9 Times on 9 Posts
Likes Given: 11

Default

interesting...


badmajon is online now
 
Reply With Quote
Old 02-21-2011, 12:29 AM   #3
TheFlyingBeer
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2007
Location: Catonsville, MD
Posts: 425
Liked 16 Times on 15 Posts
Likes Given: 3

Default

I had originally planned on making my own sensor using a bare-bones transducer module (basically the guts from a car's backup sensor head):



However, the amount of work to actually make the sensor useful was extremely large. The complete unit I purchased took all of 5 minutes to calibrate and use.
__________________

Primaries: Air
Secondaries: Lakefront India Brown Ale

On Tap 1: Rootbeer, On Tap 2: NB White ouse Honey Ale, On Tap 3: Nitrogen, On Tap 4: Air, On Tap 5: Air
On Deck: DIPA, Imp Stout, Porter, Wheat, Black IPA

"No sense having empty carboys around when full ones take up just as much space. " - Me
TheFlyingBeer is offline
 
Reply With Quote
Old 02-01-2012, 07:34 PM   #4
konky
Feedback Score: 0 reviews
Recipes 
 
Join Date: Apr 2011
Location: Madison, WI
Posts: 2
Default

Is there company and model info on that thing?

edit:
nevermind that

have you been able to test how accurate that is?

konky is offline
 
Reply With Quote
Old 02-01-2012, 07:38 PM   #5
motobrewer
I'm no atheist scientist, but...
HBT_SUPPORTER.png
Feedback Score: 1 reviews
Recipes 
 
Join Date: Oct 2009
Location: Thiensville, Wisconsin
Posts: 7,469
Liked 353 Times on 286 Posts
Likes Given: 475

Default

ha! i had one of those exact things at my desk about 4 years ago. when i moved to a new desk I binned it....

i used a really nice ultrasonic sensor from endress+hauser for a project once. unfortunately it was only on loan...


__________________
Quote:
The man who intoxicates himself on bad whisky is sometimes moved to kill his wife and set his house on fire, but the victim of applejack is capable of blowing up a whole town with dynamite and of reciting original poetry to every surviving inhabitant.

"A Wicked Beverage," New York Times, April 10, 1894
motobrewer is offline
 
Reply With Quote
Reply


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Scored toddrod Equipment/Sanitation 12 11-04-2008 08:16 AM
SWMBO scored... BuffaloSabresBrewer Equipment/Sanitation 3 10-19-2008 02:34 AM
I scored! foppa78 Equipment/Sanitation 3 09-21-2007 03:43 PM
Scored at Cabelas! God Emporer BillyBrew Equipment/Sanitation 1 06-10-2007 03:35 AM
Scored a keg! God Emporer BillyBrew Equipment/Sanitation 17 10-26-2006 03:11 AM


Forum Jump

Newest Threads

LATEST SPONSOR DEALS