484-Series Free-Standing Water Level Sensor
HOBBS 484-Series Free-Standing Water Level Sensor, used in conjunction with a U.L. recognized HOBBS 485-Series Monitor and an electronic solenoid-type fill valve, provides the safest, most advanced method of electronically maintaining the fountain water level and providing low-water cut-off protection for submersible underwater equipment and/or fountain pumps, as required by Article 680 of the National Electric Code. When the water level drops, the Water Level Sensor and Monitor will signal the solenoid valve to open and refill the pool to the required level. If the solenoid is not notified and/or the water level continues to drop, the Low-Water Cut-Off Sensor and Monitor will shut the electrical equipment off. Both functions automatically return the controlled items to “normal” operating mode upon restoration of the proper water level. The system utilizes solid state monitors and non-corrosive sensors with stainless steel probes, resulting in no moving parts that require adjustment or wear out. This sensor is ideally suited to replace old, nonfunctioning, electronic-type water level sensors or to add the now required low-water protection to existing pools lacking this feature.