Data Center HVAC Liquid Level Sensor

chemical-feed

chemical-feed

Cooling towers return waste heat to the atmosphere through the evaporative process of cooling a water stream. Cooled water is then returned back to process where its reused and ultimately sent back to the tower in a closed loop. Through continual evaporation, water must be replenished back into the system. Level is monitored in the cooling tower sump and a water fill valve is periodically actuated to raise the water level, while anti-scaling treatment chemicals are metered into the water. From a level perspective, there is a corrosion resistant, level measurement and control requirement. Here, an EchoPod ultrasonic level transmitter is installed in the cooling tooling sump of a Midwest computer data center. Temperature within the computer storage rooms are maintained at a comfortable 68º year round. The non-contact sensor provides continuous level measurement data to the PLC. The sensor’s integral relays also provide independent high and low level sump alarms.