WL600 SONIC WATER LEVEL METER
Polluted Well Level Meter & Depth Measuring Monitor

FEATURES:

Product Description

Global Water's WL600 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 instrumentation.  The water level meter is 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.

Operation

The WL600 Sonic Water Level Meter is simple to operate.  Select either the NORMAL (10-500 feet) or DEEP (up 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 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 switch down as long as necessary.

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.

Temperature Control

Obtaining an accurate measurement with the sonic water level meter requires that the temperature setting on the meter be equal to the average air temperature inside the well casing.  The temperature setting corrects for the variation of the velocity of sound with the air temperature in the well bore.  The temperature toggle switch adjusts the temperature setting for the variation of sound velocity in the well casing.  The value set shows on the display and is retained until changed.

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.

Specifications

Performance:

Measurement range: Normal 10-500' or Deep up to 1200'
Readout accuracy: +0.1'
Measurement accuracy: +0.2% of reading*
Operating temperature: 30-140° F
Power: 8 AA dry cell batteries
Dimensions: (excluding sonic measuring duct) Length: 7"; Height: 4"; Width: 5"
Sonic measuring duct diameter: 5/8"
Hole diameter must be at least large enough for 1/2 pipe thread.
Sonic measuring duct length: 2"
Weight: 3 1/2 lbs.

* 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 or greater than 10 inches in diameter.

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