General
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Manufacturer
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Siemens
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Supplier
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Siemens
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Product designation
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Ultrasonic level meter
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Brand name
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SITRANS Probe LU240
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Type designation
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SITRANS Probe LU240 Ultrasonic level transmitter ideal for level, volume, and volume flow measurements. It works with liquids, slurries, and bulk materials up to 12 m (40 ft).
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Article number
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7ML51101GD074AF3
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Net weight
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1.25 kg
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Slogan
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The ultrasonic level transmitter for all level, volume and volume flow demands and every challenging environment.
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Mode of operation and application
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Measuring principle
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ultrasonic
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Operating frequency of the sensor
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54 kHz
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Beam angle
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10 Degree
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Input
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Measurand
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Level
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Volume flow
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Volume
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Measuring range
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Measuring range
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0.2 m ... 12 m
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Measuring range
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-40 °C ... 85 °C
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Temperature compensation
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-40 °C ... 85 °C
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Output
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Current output
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Number of outputs
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1
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Signal range
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4 ... 20 mA
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Failure signal (minimum)
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3.55 mA
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Failure signal (maximum)
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22.8 mA
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Operating conditions
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Medium temperature
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-40 °C ... 85 °C
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Degree of pollution
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Pollution degree 4
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Standard for the degree of pollution
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IEC 61010-1
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Overvoltage class
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Installation category I
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Standard for the overvoltage class
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IEC 61010-1
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Pressure
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Operating pressure, relative
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-0.2 bar ... 0.5 bar
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Environmental conditions
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Ambient temperature during operation
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-40 °C ... 80 °C
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Ambient temperature during storage
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-40 °C ... 85 °C
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Ambient temperature during transport
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-40 °C ... 85 °C
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Installation altitude MSL (maximum)
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5,000 m
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Relative humidity during operation
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0 ... 100
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Degree of protection
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IP rating
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IP66
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IP68
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Electromagnetic compatibility EMC
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Standard for EMC
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IEC 61326-1
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EN 55011
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Structural Design
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Mechanical design
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Design of the device
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compact version, sensor integrated
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Process connection
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Design
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male thread
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Standard
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ANSI B1.20.1
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Nominal size
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2" NPT
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Material
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Process connection
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Material
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polyvinylidene-fluoride (PVDF)
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Enclosure
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Material
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Polycarbonate (PC)
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Polybutylene terephthalate (PBT)
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Material of the lid
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polycarbonate (PC)
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Polybutylene terephthalate (PBT)
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Sensor
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Material of the sensor
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polyvinylidene-fluoride (PVDF)
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Material of the active surface of the ultrasonic transmitter
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Polyvinylidene fluoride (PVDF)
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Cable entry & cable gland
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Material of the cable entry
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polyamide (PA)
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Electrical connections
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Connection technology
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2-wire technology
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Potential insulation
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galvanic
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Potential insulation
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to all inputs
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to all outputs
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to all supplies
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Number of cable entries
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2
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Design of the cable entry
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M20 x 1.5
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Number of conductors of the connection cable
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2
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Display and operating controls
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Display
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with display
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Design of the display
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LCD
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alphanumeric
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Number of digits of the display
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5
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Operating controls
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Pushbutton
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Number of controls
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4
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Power supply
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Electrical
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Type of power supply
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External
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Voltage type
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DC
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Nominal voltage, DC
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24 V
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Supply voltage, DC
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10.5 V ... 30 V
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Communication
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Protocol
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HART
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Protocol version
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Version 7
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Programming
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SIMATIC PDM Software
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Certificates and approvals
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Verification of suitability
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CE
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CSA us/c
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KC
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EAC
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RCM
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