Laser Marked Water Level Meter Model 102M

The Solinst Model 102M Water Level Meter is designed to measure groundwater levels, especially in small diameter tubes and piezometers, or where a flexible assembly is needed to get past down hole instrumentation.

Operating Principles

The Model 102M Water Level Meter uses a choice of two small diameter probe designs, attached to a narrow coaxial cable, fitted on a sturdy ergonomically designed reel. A standard  9 volt battery, housed in an easy-access battery drawer, powers the Water Level Meter.

When the probe enters water the electrical circuit is completed, sending a signal back to the reel where a light and clearly audible buzzer are activated. The water level is then determined by taking a reading directly from the cable at the top of the well casing or borehole.

A sensitivity control allows the buzzer to be scaled back or turned off while in cascading water, and ensures a clear signal in both high and low conductivity conditions.

Narrow Diameter Probes

Model 102M Probes are designed for flexibility. The probe tips use a recessed design to minimize false signals in cascading water. 

P10: 10 mm dia. x 70 mm long (3/8" x 2.75") stainless steel with 10 stainless steel weights, weighing 174 g (6.14 oz). This probe is ideal for the majority of water level measurement applications. The flexible weight assembly allows easy well access and keeps the cable hanging straight in monitoring wells.

P4: 4 mm dia. x 38 mm long (0.157" x 1.5") stainless steel weighing 10 g (0.35 oz), with no weights. It is ideal for shallow applications and for accessing very narrow diameters, especially the channels of the Solinst CMT System, DrivePoint Piezometers or narrow open tubes. 

Laser Marked Cable

The coaxial cable has a durable polyurethane jacket with permanent markings precisely laser etched on the cable every each millimeter or every 1/100 ft. The cable reels smoothly, remains flexible, and comes in lengths from 30 m – 300 m (100 ft – 1000 ft). A braided copper outer conductor gives flexibility and a stranded stainless steel central conductor gives strength. It is easy to repair and splice.

114861          102M Mk2 Mini Water Level Meter, P10/N3/80ft (Yellow)

114864          102M Mk2 Mini Water Level Meter, P10/N3/25m (Yellow)

114909          102M Mk2 Mini Water Level Meter, P4/N3/25m (Yellow)

114911          102M Mk2 Mini Water Level Meter, P4/N3/80ft (Yellow)

Water Level Meter Features

Low Cost       • Solinst quality at a low price

Narrow          • 4 mm (0.157") diameter probe (P4 Probe)

Long Life       • Rugged, corrosion resistant components

                      • Strong, flexible cable is easily spliced

                      • Replacement probes, cables and parts

Accurate        • Precise markings every mm or 1/100 ft

                      • Traceable to national standards

102M Mini Laser Marked Water Level Meter

The laser marked coaxial cable is mounted on a convenient small reel that is light-weight and fits easily into a mini carrying case or backpack. The accurate cable is marked each millimeter or every 1/100 ft.

The 102M Mini Water Level Meter is available in 25 m and  80 ft lengths. There is the choice of the P4 or P10 Probe.