The Solinst Model 104 Sonic Water Level Meter is an advanced, handheld, acoustic ranging instrument that provides rapid, accurate water level readings without lowering any equipment into the well, piezometer, sounding tube, or closed pipe. Utilizing sound wave technology, the Sonic meter measures the time it takes for a pulse to reflect off the water surface, delivering reliable static water level data in seconds, even in narrow, crooked, or otherwise difficult access installations. 

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Note: If you require metric-marked cable, please contact us prior to ordering.

Key Features

• Non-intrusive sonic measurement - no need to lower probes into the well, reducing decontamination and cross-contamination.
• Rapid water level readings - updated readings in ~1 sec at moderate depths. 
• Wide operating range - measures down to 600 m (2,000 ft) with both metric and English units.
• Temperature-compensated accuracy - built-in temperature sensor automatically adjusts readings.
• Customizable measurement settings - adjust minimum/maximum range and account for well/drop tube diameters or obstructions for improved precision.
• Works in straight and crooked pipes or wells - ideal for situations where traditional down-hole meters cannot reach. 
• Portable and rugged - includes field bag and plastic well cover for larger openings, with up to 500 hours battery life and power-save mode.

Applications

• The Model 104 Sonic meter supports a wide range of environmental and groundwater field applications, including:
• Groundwater static water level measurement in wells, piezometers, and sounding tubes where instrument deployment is impractical.
• Monitoring wells with narrow or obstructed access - sonic readings eliminate the need for probes or tapes. 
• Field programs requiring rapid, repeatable water level data - ideal for large monitoring networks or frequent sampling campaigns. 
• Contaminated or corrosive environments where lowering equipment into the well is undesirable or costly.
• Closed pipe or drop tube installations, including angled or crooked configurations where traditional meters struggle.
• Pre-installation and site characterization surveys - fast depth to water measurement helps plan subsequent sampling or instrumentation.