LVU-201A
Two-Wire Ultrasonic Level Transmitter
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Non-Contact Level Transmitter with 4 to 20 mA Output
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Accurate and Reliable Level Measurement from 0.2 to 5.5 m (0.5 to 18')
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Automatic Temperature Compensation
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8° Beam Allows Application in Restricted Environments
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All-Plastic Construction
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Pushbutton Calibration with Display
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Microprocessor Logic Filtration Eliminates False Echo Signal Returns
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Failsafe Intelligence Provides Echo Signal Loss Safety
产品描述
The LVU-201A has been replaced by LVU706 that performs the same function.
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 Ω @ 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
