Sonic Water Level Meter Product Description
Global Water's WL650 Sonic Water Level Meter is a self-contained, battery operated meter that uses sound waves to measure well water level. Fast, accurate measurements are possible in the field or anywhere without the use of down-hole water level meters. The Sonic Water Level Meters are lightweight, compact, versatile, and easy to operate.
The water level meter allows you to measure crooked wells, wells with cascading water, partially cased rock wells, wells with submersible pumps, capped or uncapped wells, wells with pipes and wires inside, in fact you can even measure the length of coiled pipe with the water level meter. As long as the obstructions take up no more than half of the bore area the meter will not suffer any loss of accuracy. The sonic water level meter should only be used on wells under 10 inches in diameter as the accuracy decreases with larger diameter wells.
Sonic Water Level Meter Operation
The WL650 Sonic Water Level Meter is simple to operate. Select either the NORMAL (10-500 feet) or DEEP (200 to 1,200 feet) setting on the DEPTH switch. Then, to measure a capped well, simply insert the duct into the 5/8 inch wide access port and push the power-on switch. In a few seconds the water level will appear on the water level meter's digital display. In the NORMAL setting, the sonic water level meter stays activated for 5 seconds or 5 pings. Using the DEEP mode, the water level meter emits 4 pings in 16 seconds. For more measuring time, hold the sonic water level meter's switch down as long as necessary.
Ignore distance feature
For uncapped wells, use the provided cover plate, which slips onto the measuring duct and provides a seal for up to 6-inch diameter casings. Cover plates for larger diameters can be easily fabricated from plastic or metal sheet.
Gain/Sensitivity - "Which Gain Setting to Use, Fixed or Variable?"
The Variable gain mode is somewhat more susceptible to interference from pump noise or other sources of high ambient noise. Also, in some specific configurations it is possible for the unit to favor a secondary return over the primary one and give a reading that is twice the actual water level.
The Fixed mode is less susceptible to interference from ambient noise and the secondary return problem. This mode can be used to advantage in such cases. Some sensitivity is sacrificed so the unit might not read the deepest water levels in this mode.
The correct temperature setting can be determined by using the TEMPERATURE MAP TABLE provided with the water level meter for the state where the meter will be used (temperature settings are provided for all states in the United States). Alternatively, the reverse side of the map table has a LOOK-UP TABLE giving the setting if the well water and average monthly surface temperatures are known.
Please note: The outside or ambient air temperature does not affect the water level meter operation, provided the meter and its components remain within the operating temperature range.
Sonic Water Level Meter Specifications
Measurement range: Normal 10-500 ft (3-152 m), Deep 200-1200
ft (61-366 m)
* Under certain conditions, accuracy may exceed this limit; when the well casing is discontinuous; when the well casing is highly corroded or rough; when large obstructions e.g. pipe joints or wiring exceed half the area of the well casing; if the well casing is less than 2 inches (5 cm) or greater than 10 inches (25.4 cm) in diameter.
Sonic Water Level Meter Options
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