The Well Watch 670 is a simple to use self-contained acoustic ranging instrument
designed specifically to find the distance through a closed pipe (well casing or
sounding tube as small as 1/2”) from one closed end to the to the other. The Well
Watch works by sending a low frequency sound pulse into the pipe, then measuring
the time it takes for the echo to return from the opposite end, which could be a plug or
water surface. The distance is calculated using the sound speed and the time. The low
frequency sound can follow the pipe around corners and in any direction up/down or
horizontally. It can be used to measure any closed pipe, straight or crooked with a
The Well Watch 670 consists of a control unit and a probe which are connected by a
latching hinge. The control unit contains the driver electronics, processor, display, and
keypad, while the probe contains a speaker, a microphone and a threaded spout to
connect to the test pipe.
When the unit powers, it immediately begins sending sound pulses into the well and
attempts to characterize the well. After a few seconds, the depth is calculated and
output for the user. The data will also be sent in a variety of formats through the
several outputs provided.
The Well Watch is also available in the 660 model which is the base model to the 670.
It is a simple display only unit with a keypad, LCD display and RF module for
communications with the 310 Remote Display.
Both models require 7-16vdc external power. A power adapter is supplied with the unit
to supply the dc power from a standard ac power outlet, but a battery pack or solar
panel could also be used
Built-in display allows for view of real-time data and control of settings
Data logger stores up to 25 million time/date stamped log points