The global population of beluga whales stands at just under 100,000, and the Association of Zoos and Aquariums has classified their dwindling population as near threatened, and made their preservation and rehabilitation a top priority. This exhibit display tank holds 530,000 gallons of saltwater that’s supplied from two brine make up tanks behind the exhibit. The aquarium pH and salinity are monitored and adjusted through subtle changes in the make up tank composition. Here, an EchoPod ultrasonic level transmitter is mounted in a stand-pipe, located behind the scenes, at the back of the exhibit tank. The non-contact sensor provides continuous level measurement data to the PLC, which in turn, periodically refills the exhibit with fresh make up water. The sensor’s internal relays actuate independent high and low level alarms for the aquarium. EchoPod is reliable aquarium exhibit tank level measurement.