Raven 200U Sonic Well Water Level Sounder 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 Raven 200U Sonic Well Level Sounder 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

The factory distance default values for the sonic water level meter are 10 ft ( 3 meters) in Normal mode and 200 ft (60 meters) in Deep mode. If problems occur due to reflections from liners that don't come all the way to the top of the casing or unwanted signal returns from such things as pitless adaptors and such that interfere with getting a proper reading the water level meter's default values can be increased so that returns within that distance are ignored. Also, if you are making draw-down measurements that require the use of the sonic water level meter's deep mode but you wish to be able to measure to less than 200 ft (60 meters) you can reduce the minimum distance accordingly so that you don't have to switch modes during the test.

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.