Reverse Osmosis Water Liquid Level Control

chemical-feed

chemical-feed

Ultrapure water is required in many industries such as the food, microelectronic, pharmaceutical, medical and energy markets to name a few. In these applications, contaminants negatively affect the quality of the product or the equipment used to produce it. Reverse osmosis (RO) is a water purification technology that uses a semipermeable membrane to remove larger particles from water. Potable city or feed water is pumped through the membrane system, and ultrapure water, which represents 80% or more of the original feed water, comes out the other side where it’s stored for use in a process. Here, an EchoSwitch ultrasonic level controller is installed on a RO storage tank. The non-contact sensor provides continuous level data to the PLC, which in turn, actuates the RO system to refill the tank when depleted. The sensor’s internal relays actuate independent high and low level alarms for the tank. EchoSwitch is reliable RO storage tank level measurement.