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Continuous level sensor (guided wave radar)


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  • For the reliable level control in tanks and containers
  • Suitable for water, oils and coolants
  • Clearly visible 4-digit LED display
  • Modular system consisting of evaluation unit and probe
  • Adaptation to different container heights through shortening of the probe
  • ce
  • eac
  • cul
  • iolink
  • crn
Technische Details
Product characteristics
Number of inputs and outputs Number of digital outputs: 1; Number of analogue outputs: 1
Probe length L [mm] 150...2000
Process connection G 3/4 external thread
Special feature Gold-plated contacts
Media Liquids; oil-based media; hydrous media
Dielectric constant of the medium ≥ 1,8; (for media with a dielectric constant of 1.8...5 (e.g. oils), a coaxial pipe is needed for operation)
Recommended media water; hydrous media; oils; oil-based media
Medium temperature [°C] -20...100
Tank pressure [bar] -1...16
MAWP (for applications according to CRN) [bar] 16
Electrical data
Operating voltage [V] 18...30 DC
Current consumption [mA] < 50
Protection class III
Reverse polarity protection yes
Power-on delay time [s] < 3
Inputs / outputs
Number of inputs and outputs Number of digital outputs: 1; Number of analogue outputs: 1
Total number of outputs 2
Output signal switching signal; analogue signal; IO-Link
Electrical design PNP/NPN
Number of digital outputs 1
Output function normally open / normally closed; (parameterisable)
Max. voltage drop switching output DC [V] 2.5
Permanent current rating of switching output DC [mA] 150; (200 (...60 °C))
Number of analogue outputs 1
Analogue current output [mA] 4...20, invertible; (scalable)
Max. load [Ω] 500
Short-circuit protection yes
Type of short-circuit protection pulsed
Overload protection yes
Measuring/setting range
Probe length L [mm] 150...2000
Active range A [mm] L-40 (L-60); (when set to oil and oil based media)
Inactive range I1 / I2 [mm] 30 / 10 (30); (when set to oil and oil based media)
Sampling rate [Hz] 4
Setting range
Set point SP [mm] ≥ 15 (35) / ≤ L-30
Note on setpoint SP
when set to oil and oil based media
Reset point rP [mm] ≥ 10 (30) / ≤ L-35
Note on reset point rP
when set to oil and oil based media
In steps of [mm] 1
Hysteresis [mm] > 5
Accuracy / deviations
Measuring error [mm] ± 7
Offset error [mm] 5
Resolution [mm] 1
Zero signal (current) [mA] 4.0
Full signal (current) [mA] 20
Temperature drift per 10 K ± 0.2 %
Communication interface IO-Link
Transmission type COM2 (38,4 kBaud)
IO-Link revision 1.1
SDCI standard IEC 61131-9
Profiles Smart Sensor: Process Data Variable; Device Identification, Device Diagnosis
SIO mode yes
Required master port type A
Process data analogue 1
Process data binary 2
Min. process cycle time [ms] 2.3
Supported DeviceIDs
Type of operation DeviceID
Default 479
Operating conditions
Ambient temperature [°C] -40...80
Storage temperature [°C] -40...100
Protection IP 68; IP 69K
Tests / approvals
DIN EN 61000-6-2
DIN EN 61000-6-3 : in a metal tank
DIN EN 61000-6-4 : in a plastic tank
Shock resistance
DIN EN 60068-2-27 50 g (11 ms) / 20 g (6 ms) with reference rod 0.5 m
Vibration resistance
DIN EN 60068-2-6 20 g (10...2000 Hz) / 1 g (5...200 Hz) with reference rod 0.5 m
MTTF [years] 216
Mechanical data
Weight [g] 447.5
Materials stainless steel (1.4404 / 316L); PEI; PFA; PBT; FKM
Materials (wetted parts) stainless steel (1.4404 / 316L); stainless steel (1.4435 / 316L); PTFE; FKM
Process connection G 3/4 external thread
Displays / operating elements
Display unit 3 x LED, green
switching status 2 x LED, yellow
level alphanumeric display, 4-digit
parameter setting alphanumeric display, 4-digit
Pack quantity 1 pcs.
Electrical connection
Connection Connector: 1 x M12; Contacts: gold-plated
Diagrams and graphs
Measurement deviation D at the limits of the active rod range
ifm electronic gmbh • Friedrichstraße 1 • 45128 Essen — We reserve the right to make technical alterations without prior notice. — EN-GB — LR2050-01 — 11.05.2017 —