The LVU-201A 2-wire ultrasonic level transmitter is the compact solution for non-contact continuous level measurement in process vessels, storage tanks, and open channels. This loop-powered device provides accurate level measurement up to 5.5 m (18') and is the ideal choice for more challenging coating or scaling liquids, including sodium hydroxide, wastewater, resin, wax, liquor, and bleach.
An ultrasonic sound wave is pulsed 2 times per second from the base of the transducer. The sound wave reflects against the process medium below and returns to the transducer. The microprocessor-based electronics measure the time of flight between the sound generation and receipt, and translates this figure into the distance between the transmitter and process medium below.
SPECIFICATIONS Range: 0.2 to 5.5 m (0.5 to 18') Accuracy: ±0.25% of span Resolution: 3 mm (0.125") Frequency: 50 kHz Pulse Rate: 2 pulses/second Beam Width: 8° conical Blocking Distance: 15.2 m (6") minimum Display Type: 4-segment LCD Display Units: In/cm Supply Voltage: 12 to 32 Vdc Max Loop Resistance: 600 ? @ 24 Vdc Signal Output: 4 to 20 mA Signal Invert: 4 to 20 mA/20 to 4 mA Calibration: Pushbutton Mountable Gasket: FKM Conduit Entrance: Single, 1.2 NPT CE Compliance: EN61326 EMC Failsafe Diagnostic: Reverts to 4 mA or 22 mA Temperature Rating: -20 to 60°C (-4 to 140°F) Temperature Compensation: Automatic over entire range Pressure Rating: 30 psi @ 25°C, derated @1.667 psi per °C above 25°C Enclosure Rating: NEMA 4X (IP66) Enclosure Material: Polypropylene Transducer Material: Polyvinylidene fluoride Mounting threads: 2 NPT