[RE-wrenches] Water level testing
Drake
drake.chamberlin at redwoodalliance.org
Tue Apr 28 15:34:39 PDT 2015
I was wondering if anyone had a source for 24 or 48 VDC "depth
gauges" that could be used in a cistern or shallow well. A SCUBA
depth gauge on the wrist is fairly accurate. It would seem like a
signal could be sent electronically though a wire and be read outside
the tank. I've never heard of one, however. Does such a device exist?
Thanks,
Drake
At 08:30 PM 4/25/2015, you wrote:
>I agree with Windy and this article, the electric sounders can be
>finicky. I've never tried the airline method, but some well folks
>from Texas taught me to use an inverted plumbing fitting on a
>string. When it hits the water you can feel it on the line,
>because the small pocket of trapped air causes the weight to stall
>momentarily. You can confirm by repeatedly raising it and
>"popping" it at the water surface. If its quiet, you can hear it
>too. The bottom of the well can be sounded just like with any
>weighted line: raise and lower repeatedly, finding the spot that the
>line goes slack. I've used this as deep as 800 ft.
>For shallower wells we just attach this fitting straight to our 300
>ft measuring tape; if it's deeper, we tape the string to mark the
>water level and Total depth, then measure the string after.
>
>R.Ray Walters
>CTO, Solarray, Inc
>Nabcep Certified PV Installer,
>Licensed Master Electrician
>Solar Design Engineer
>303 505-8760On 4/25/2015 2:36 PM, Allan Sindelar wrote:
>>For those Wrenches that work with deep-well water pumping
>>installations, the attached guide is useful to file away for later
>>use. Windy sent it to me, and it has three options for determining
>>the depth of water in a well.
>>I taped a 1/4" plastic irrigation tube to the
>>hand-installation-method bundle of flexible pipe, wire, signal wire
>>and safety rope in an installation yesterday. Easy rough-in for
>>testing water table drop and pump submergence over years.
>>
>>The guide was published in 2000 by the Oregon State University
>>Extension Service.
>>Allan
>>
>>Allan Sindelar
>><mailto:allan at sindelarsolar.com>allan at sindelarsolar.com
>>NABCEP Certified PV Installation Professional
>>NABCEP Certified Technical Sales Professional
>>New Mexico EE98J Journeyman Electrician
>>Founder (Retired), Positive Energy, Inc.
>>505 780-2738 cell
>>
>>
>>-------- Forwarded Message --------
>>Subject: air tube for water level testing
>>Date: Wed, 22 Apr 2015 19:07:37 -0600
>>From: Windy Dankoff
>>To: Allan Sindelar
>>
>>
>>Following is a very cheap means of testing depth to water, pump
>>running or not.
>>
>>Allan - Get 230 feet of 1/4" irrigation tube to put down the well.
>>It will be used to make pressure test at any time, using a bicycle pump.
>>
>>Instructions attached. This will be for use of the "Air Line"
>>method shown on this doc. Tape the tubing to the pipe, along with
>>the level probe
>>cable. The bottom of tube can be where the probe is - just above
>>the check valve.
>>
>>
>>
>>
>>
>>
>>
>>
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