WL500WATER LEVEL SOUNDER
WaterDetection Unit and Measuring Tape Reel
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GlobalWater’s WL500 Well Level Sounder sets a new precision standard for well waterlevel measurement. The Water Level Sounder meets or exceeds federalspecification US GGG-T-106E (USA) or EEC CLASS II (Europe) for a guaranteedaccuracy of 0.008%. The Water Level Sounder uses a full depth-ratedstainless steel and PTFE probe that is 5/8-inch (16 mm) in diameter. Thewater level sounder’s sensor electronics are encapsulated in a water and dustproof housing. The water level sounder’s electronics module can be removedso that the entire reel and tape can be cleaned and decontaminated. Theflat spring steel core ensures that the level sounder will hang perfectlystraight in large and small diameter wells. This provides unparalleledaccuracy when compared to the flat white tapes, where kinks in the tapeintroduce slight errors, in addition to the displacement of water changing thestatic level.
The water level sounder uses a shrouded probe with a unique design to preventbridging and detect the bottom of the well. Bridging is often encounteredduring pump tests with similar water level sounders. All WL500 Well LevelSounders carry a sensitivity adjustment for different water qualities. This sensitivity control prevents false readings in wells containing very purewater or very conductive water and is ideal for pump and draw down tests. When the water level sounder’s probe assembly makes contact with the surface ofthe water, a bright LED glows and a beeper sounds on the reel. The waterlevel sounder detects the bottom of the well using a specially engineered tipthat causes the sounder’s audio alarm to cease when the bottom of the well isreached.
The WL500, Water Level Sounder, has a rugged alumnium bearing.
The well level sounder consists of a strong NTS-certified polyethylene jacketedmeasuring tape that will accurately read to 0.01 foot or 1 mm. The tapereels are built of resistant polycarbonate (or, for units with over 400 ftcable, of lighter aluminum). Our clients almost universally preferaluminum reels for the improved durability, ease of cranking, and betterergonomics. Most plastic reels have much smaller hubs and that makescranking much tougher. All load bearing components on the WL500 well levelsounders are made of aluminum.
The depth sounder is battery operated, thus there is no danger of shock from anoutside power supply. Two conductors make a separate ground connectionunnecessary, so the instrument will function equally well in uncased test holesor in uncased wells in rock. Water entering the well from casing leaks orperforations about the water level will not affect the depth gauge’smeasurements.
Tape Graduation: 1 ft and 0.01 ft intervals or 1m and 1mm intervals
Tape Material: Polyethylene
Probe Diameter: 5/8″ (16mm)
Signal: Audible buzzer and light
Battery: 9 V battery
Shipping Weight: 300 ft (100m) tape: 9 lbs (4 kg)
Shipping Size: 12″ x 14.5″ x 8.5″ (31 x 37 x 22 cm)