Series UT Ultrasonic Level Transmitters provide reliable, noncontact measurement for liquid level control in tanks and other vessels. Integral electronics generate an ultrasonic pulse which is transmitted through the air space in the tank. The pulse is reflected back to the sensor at the liquid/air interface. From the received echo, the time of flight can be calculated which is directly proportional to the distance of the liquid surface to the sensor. A continuous 4 to 20 mA output signal is generated and updated every half second. Units feature a fully adjustable zero and span, height and distance mode adjustment, lost echo LED indication, and reverse polarity protection.

SPECIFICATIONS
Range: 10 ft (3 m).
Service: Liquids.
Wetted Materials: UT125: CPVC; UT1264: PVDF.
Accuracy: ±0.25% full scale.
Repeatability: 1/8" (3.2 mm) typical.
Temperature Limits: Sensor: -20 to 160°F (-29 to 71°C), Electronics: -10 to 170°F (-23 to 77°C) compensated over full range of sensor.
Pressure Limits: 100 psig (6.9 bar).
Blind Zone: 6" (15 cm).
Beam Angle: Conicle 12°.
Power Requirements: 16 to 30 VDC.
Output Signal: 4 to 20 mA DC (isolated), 4-wire.
Zero and Span Adjustments: Zero: 6" to 114" (15 to 290 cm), Span: 1" to 120" (2.5 to 305 cm).
Process Connection: 3/4" male NPT.
Enclosure Rating: UT125: NEMA 7, cast aluminum; UT1264: NEMA 4X (IP67), ABS plastic.
Mounting Orientation: Vertical.
Weight: UT125: 5 lb (2.3 kg); UT1264: 2.0 lb (0.91 kg).