When a Southern California zoo needed reliable level measurement of their seal exhibit pools, they turned to Flowline. Weighing up to 300 pounds, harbor seals are large, inquisitive mammals that tend to locate, play with and destroy accessible instrumentation. Their peak activity generates wave heights up to 6″ with splashing and water loss, that requires level monitoring and frequent replenishment. The process engineer was also concerned with salt water corrosion resistance, and the deployment of an animal friendly level sensing technology. For this reason, Flowline suggested the use of our non-contact ultrasonic level sensor, mounted in a stand pipe to dampen the effects of significant turbulence.
EchoPod® UG06 & UG12 Reflective Ultrasonic Liquid Level Transmitter
The general purpose reflective ultrasonic level transmitter provides continuous level measurement up to 39.3’ (12m) with a 4-20 mA analog signal output, and is configured via its integral push button display module or WebCal software. The non-contact liquid level sensor features our proprietary Reflective Technology™ that delivers reliable level measurement in condensing environments. Select this sensor for bulk tanks with non-foaming or highly vaporous media such as chemicals, water, wastewater and oil. Typical applications include bulk storage, neutralization tank, clarifier and waste sumps.
- Offered in 6m (19.6’) and 12m (39.3’) measurement ranges
- Reflective Technology™ measures reliably with condensation
- Corrosion resistant PVDF transducer with IP68 PP enclosure
- Fail-safe diagnostics with selectable signal fail-safe outputs
- LCD display indicates level in inches, meters or percent of span
- Narrow 3” (7.6cm) beam width for applications with limited space
- Windowed enclosure cap provides liquid tight level indication
- Configuration via push button display or WebCal software
- Automatic temperature compensation from -40º to 80º C.
Condensation is the most common variable in liquid level applications. Condensation attenuates the acoustic signal of ultrasonic sensors with horizontal transducers, weakening their signal strength and signal to noise ratio by up to 50%, and substantially reducing their measurement reliability. At the core of Reflective Technology™ is a simple fact. Unlike flat horizontal surfaces, significant water droplets cannot adhere to smooth vertical surfaces. By orienting the transducer vertically, condensation runs off the transducer and does not affect sensor performance. The unimpeded transmit and receive signals are redirected to and from the liquid off a 45º reflector, delivering reliable level measurement. Thanks gravity.