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More information about how a Level sensor works in this link.
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,
waste water, resin, wax 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.
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
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
† Tutti gli importi indicati in EUR Nota: Comes complete with operator’s manual.
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