OMEGA欧米茄LVU41-RS232_LVU41-RS485超声波液位测量传感器
Available with RS232 or RS485 Communications
Programmable
Push-Button Calibration
Elimination of Unwanted Echoes
Temperature Compensated
Field/Bench Calibration
Self-Cleaning Sensor Face
Non-Volatile Memory (Batteries not Required)
The LVU40 series ultrasonic transmitters are advanced ultrasonic level measurement sensors for liquids. These products continue to meet demanding applications.
The microprocessor-based circuits provide a temperaturecompensated signal for improved accuracy. All models have the ability to filter false echoes produced by peripheral obstructions.
Continuous level measurement can be provided in a range of 0.3 to 18.3 m (1.0 to 60') with several power and programmability options. Point level can also be obtained using a PLC (Industrial Programmable Controller) or one of OMEGA’s CNI process controllers.
SPECIFICATIONS
Accuracy: ±0.25% of max range (in air)
Range: 0.3 to 18.3 m (1 to 60')
Resolution: 6.9 mm (0.270")
Frequency: 45 kHz
Dead Zone Range: 0.3 m (1')
Operating Temperature Range: -40 to 60°C (-40 to 140°F)
Pressure: 1 bar (15 psig max)
Mounting: 3 NPT
Beam Angle: 6 to 12° at -3 dB (model dependent)
Loss of Echo Hold: 30 seconds, 22 mA output
Power Options:
AC: 115 Vac, 60 Hz or 230 Vac, 50 Hz (±20%) 1.7 VA
DC: 12 to 30 Vdc @ 0.07 A, @ 24 Vdc R load = (Vs – 6)/24 mA
Output: 4 to 20 mA or 20 to 4 mA, 6.1 μA resolution; 750 Ω (isolated on 4-wire models only)
Optional: RS232 or RS485 communications port
Fuse: 0.125 A/250 V type
Temperature Compensation: Onboard the sensor
Calibration: Pushbutton or optional programmable
Diagnostics (Echo Profile): Via optional programmable port
Approval: Entela, CE
Conduit Entry: ? NPT hole (PVC only)
Enclosure: Aluminum with PVC antenna ingress protection [NEMA 4X (IP66)]
Housing Dimensions: 101.6 x 226.1 m (4 x 8.9")
Sensor Diameter: 76.2 mm (3")
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