DESCRIPTION
The U002 is a compact, 24 VDC loop-powered switch that uses ultrasonic technology for liquid level measurements. The U002 features a stainless steel tip-sensitive transducer for use in high or low level applications.

The compact electronics are integral to the transducer and are housed in a 4” long section. With a 1” transducer, the entire switch weighs just a pound and is 5.25” long. This makes the U002 an excellent choice for applications where there are height or clearance restrictions.

In operation a high frequency, ultrasonic signal is transmitted across the sensor gap. When it is filled with liquid, this signal is detected by the internal circuit that establishes a loop current draw of 16 mA. The ultrasonic signal is attenuated by the air, when the sensor is dry, and the circuit switches the loop current to 8 mA. The switch output can be field configured as a relay or current output.

SPECIFICATIONS
Input Voltage: 16-36 VDC
Max. Loop Resistance: 675 ohms at 24 VDC
Power Consumption: 1 watt maximum
Process Temperature: -40°F to +250°F (-40°C to +121°C)
Operating/Non Operating Pressure: 800/1500 PSIG
      (55/103 Bar)
Crystal Frequency: 2 MHz, continuous wave
Response Time: 0.1 second typical
Repeatability: ±0.078” (2mm)
Output:  Relay or current outputs (field configured)
Current Output:
Dry Sensor: 8 mA ±2 mA
Wet Sensor: 16 mA ±2 mA
Relay: SPDT 0.5A @ 125 VAC, 1A @ 30 VDC