Condensation is the most common variable in liquid level applications, and it substantially degrades the measurement signal strength of ultrasonic sensors, until now.  New reflective-ultrasonic level sensors work in condensation.  By orienting the transducer vertically, condensation runs off the unimpeded transducer face to deliver reliable level measurement.  EchoTouch reflective-ultrasonic level transmitters are offered in small and bulk tank versions with optional push button display or software configuration and HART® communication.  For information, go to www.flowline.com/echotouch