FREQUENTLY ASKED QUESTIONS
Q:
Can I use the Well Watch on an open well?
A:
The Well Watch was designed to work on a closed well. A simple piece of rigid card
board or plastic held tight against the opening is enough to meet this requirement. In
many cases it will work on the open well but may be off by a couple feet.
Q:
Does the Well Watch work on wells with the pump installed?
A:
Yes. The sound pulse used for measuring is not disturbed by the presence on pump
wiring or piping.
Q:
What if there are guard rings or torque arresters on the pump line?
A:
The Well Watch will read past most guard rings and torque arresters with little signal
attenuation. Some torque arresters may block more than 90% of the well opening and
may cause problems.
Q:
Will the Well Watch work with the pump running?
A:
Generally, yes. If however the pump is exceptionally noisy and or the water level is
near or below the pump, it is possible that the noise from the pump could interfere with
the depth measurement.
Q:
Does the Well Watch work on larger diameter wells?
A:
The Well Watch, with the standard probe, works on wells up to 18” in diameter.
However, as the well diameter increases, the signal strength weakens and becomes
more susceptible to pump noise and imperfections in the well.
Q:
How deep will the Well Watch measure?
A:
The maximum range is 7000 feet. This may not be achievable on all wells however.
On a good 6” well with tight clean casing all the way down to the water and little or no
obstructions along the way, maximum range can be achieved. On uncased wells drilled
through porous stone or with irregular walls, or any obstructions such as spacer rings
or couplings the range will be reduced.
Q:
Does the Well Watch work in wells with perforated casing?
A:
If the perforations are exposed (above the water line) and the exterior of the casing
is very porous like crushed stone, then the perforations will dampen the sound pulse
and there will be no reflection for the Well Watch to detect. In this case, the Well Watch
will track the descending water level until it gets to the perforations and then stick at the
start of the exposed perforations as the water level continues to descend.
Eno Scientific Well Watch 700
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