Endress+Hauser Inc., Greenwood, IN, offers an instrumentation package for wastewater aeration control. The instruments measure dissolved oxygen, nitrate, ammonium, pH, suspended solids, temperature, airflow rates, air pressures, and water levels in aeration basins to provide enhanced and reliable control of a process. Sensors connect to a PLC or SCADA system via 4–20 mA with HART, Profibus, or other digital interfaces. Instruments include Liquiline CM442 transmitters and CAS40D sensors that measure ammonium and nitrates while also providing pH, temperature, chloride, and potassium measurements; Oxymax dissolved oxygen sensors; a T-Mass 65I thermal mass insertion flowmeter for the blower air line; a Cerabar S pressure transmitter for air line pressure; and a Prosonic FMU90 ultrasonic or Waterpilot FMX21 hydrostatic instrument to measure level.
Wastewater Instrumentation from Endress+Hauser