For measuring the depth to water in wells, boreholes, standpipes, and tanks, Model 101 Water Level Meters are the industry standard for portable hand operated meters. They are sturdy, easy to use and read accurately to 1/100 ft. or each millimeter.
The Model 101 P7
Water Level Meter features a pressure-proof probe rated to 500 psi
and laser marked PVDF tape. The Model 101 P2 Water Level Meter features
an easy-to-repair probe and heat embossed polyethylene tape.
Operating Principles
Model 101 Water Level Meters use corrosion proof stainless steel
probes attached to permanently marked flat tape, fitted on a
well-balanced reel. They are powered by a standard 9 volt battery.
The probes incorporate an insulating gap between electrodes. When
contact is made with water, the circuit is completed, activating a loud
buzzer and a light. The water level is then determined by taking a
reading directly from the tape at the top of the well casing or
borehole.
A sensitivity control allows the buzzer to be turned off while in
cascading water, and ensures a clear signal in both high and low
conductivity conditions.
Reels
With a stand-alone design, convenient carrying handle, and sturdy probe holder, the standard reels are ergonomically
designed for ease of use. They are robust and smooth running.
The battery is housed in a convenient drawer in the front of the reel, allowing quick replacement.
P7 Probe
The P7 Probe is submersible up to 1000 ft. (300 m), ideal for measuring total well depth. The sensor at the tip of the
probe provides consistent measurements with almost zero displacement.
PVDF Laser Marked Tape
The Model 101 P7 Water Level Meter uses extremely durable, PVDF flat tape, traceable to NIST and EU measurement
standards. Each tape conductor contains 13 strands of stainless
steel, and 6 strands of copper-coated steel, making the tape non-stretch
and high in tensile strength and electrical efficiency.
P2 Probe
The P2 Probe is shielded in design to reduce or eliminate false
readings in cascading water. The probe consists of a stainless steel
body with a neoprene heat shrink seal. It is not suitable for
submergence to any significant depth. Its simple design makes it easy to
repair.
Polyethylene Tape
The Model 101 P2 Water Level Meter uses high quality polyethylene
tape that reels smoothly, remains flexible and hangs straight in the
well. Heat embossed marking each millimeter or 1/100 ft. allow accurate
readings. The 3/8" (10 mm) wide tapes come in lengths up to 1000 ft.
(300 m).
M3 Meters and centimeters: with markings every mm.
Tape Guide/Datum
A tape guide is provided with each Meter. It protects the tape from
damage on rough edges of well casing and ensures easy, consistent
measurements, regardless of who takes the readings. It can also provide
support on the casing, for
small reels.
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