APPLICATION: water level detection

SUGGESTED SOLUTION: WS-2 water level sensors

The range of Waterra Water Level Sensors: closed reel, open reel and ReelCase


Waterra makes a high quality water level detection instrument called the Waterra WS Water Level Sensor. It consists of a reel mounted graduated tape attached to a stainless steel probe. When the probe encounters water it triggers a light and a buzzer informing the user that the probe is in water. The depth of the probe below the top of the well can be quickly determined by reading the measurement on the graduated tape. Waterra Water Level Sensor tapes are available in metric or imperial graduations and in lengths of up to 300 feet (100 m).


The Water Level Sensor is carried to the well and the stainless steel probe is removed from its holder. The probe is then lowered down the well by feeding the tape off of the reel. When the water table is reached, the conductivity of the water completes the electrical circuit in the probe triggering a light and a buzzer in the reel. Typically one feeds the tape down the well until the water level is reached and then one zeros in on the exact level by making small adjustments to the depth of the probe. Once the top of the water table is found, the exact depth is obtained by recording the reading on the marker tape that corresponds to the top of the casing or other suitable reference mark.