The WLT-704 can be provided with a Digital Display of the water level. This display can be loop powered (4-20 ma application) or it can be powered with an external supply.

The output from the WLT-704 can be used as a controller input, such as the Series 900 Gate Controller. It can also be used to drive a recorder.

The WLT-704 is designed in a cast aluminum housing that is NEMA-4 rated. This housing has an O-ring gasket to seal the cover. This cover can easily be removed to access the internal electronics by the removal of 4 screws.

The WLT-704 Water Level Transducer is Designed for installation in a stilling well or similar structure. The transducer is to be mounted on a flat surface directly over the water. It must be level and securely fastened to the surface with 1/4-20 bolts.

The transducer utilizes a float-tape-counter system and a precision tape wheel to produce an accurate rotational shaft input. The rotation of the shaft is converted into an electrical signal with a precision potentiometer. This combination of components results in an accurate electronic measurement of the absolute elevation of the water level.

The float is made from a low density polyethylene which stays in a stationary position in the water. A stainless steel tape is physically connected to the float and a stainless steel counterweight that provides a constant tension on the tape. The tape is accurately punched each 0.500 ft with a small hole to fit into pins on the wheel, thus preventing any slippage. When the tape is draped over the wheel, a fixed mechanical linkage is developed between the water surface and the precision potentiometer. Therefore, the accuracy of the water surface measurement is extremely high. Errors in the float system and electronic measurement are less than 0.01 ft for most ranges.

AC powered units: 120 vac 60 hz standard

Optional DC powered: 110 to 165 vdc 24 or 48 vdc

Housing: NEMA 4X Aluminum 9”L X 9”W X 4”H

Overall size: 9.6”L x 9”W x 7”H

Tape Wheel size: 6” DIA X 0.5”W
1.500 ft Circumference
0.500 ft pin spacing
0.375” tape width
0.250” shaft diameter

Display: 0.00 to 1999

Output: 0 to 10 vdc (option V)
0 to 1 ma (option I)
4 to 20 ma (option I)
0 TO 5K ohm (option P)