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Please see the technical note under "Downloads"


Electronic level sensor


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Technische Details
Product characteristics
Number of inputs and outputs Number of digital outputs: 1; Number of analogue outputs: 1
Factory setting hydrous coolants; water; media similar to water
Probe length L [mm] 264
Media hydrous coolants; oils; oil-based media; water; media similar to water
Dielectric constant of the medium > 2
Cannot be used for extremely conductive media; adhering media; granulates; bulk material; acids; alkali; food and electroplating industry
Maximum speed of the change of level [mm/s] 100
Tank pressure [bar] 0.5; (when mounting with mounting accessories: E43001 - E43007, E43019)
Medium temperature [°C] 0...35; (with climatic tube E43100: 35...65 °C)
Medium temperature [°C] 0...70
Medium temperature short time [°C] 0...90; (< 1 h)
Medium temperature [°C] 0...35; (with climatic tube E43100: 35...65 °C)
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] 200
Number of analogue outputs 1
Analogue current output [mA] 4...20, invertible
Max. load [Ω] 500
Analogue voltage output [V] 0...10, invertible
Min. load resistance [Ω] 2000
Short-circuit protection yes
Type of short-circuit protection thermal, pulsed
Overload protection yes
Measuring/setting range
Factory setting hydrous coolants; water; media similar to water
Probe length L [mm] 264
Active range A [mm] 195
Inactive range I1 / I2 [mm] 53 / 16
Setting range
Set point SP [mm] 25...200
Reset point rP [mm] 20...195
In steps of [mm] 5
Reference point OP [mm] 69 - 82 - 94 - 106 - 118 - 130 - 143 - 155 - 167 - 179 - 191 - 204 - OFF
Hysteresis, OP [mm] 2
Accuracy / deviations
Measuring error [% of the final value] ± 5
Repeatability ± 2
Resolution [mm] 5
Zero signal (voltage) [V] 0
Zero signal (current) [mA] 4.0
Full signal (voltage) [V] 10
Full signal (current) [mA] 20
Software / programming
Parameter setting options hysteresis / window; normally open / normally closed; switching logic; current/voltage output; SP/rP position; adjustment OP; medium selection; offset setting; switch-on/switch-off delay
Communication interface IO-Link
Transmission type COM2 (38,4 kBaud)
IO-Link revision 1.1
SDCI standard IEC 61131-9
IO-Link device ID 0x000289
Profiles Smart Sensor: Process Data Variable; Device Identification, Device Diagnosis
SIO mode yes
Required master port type A
Process data analogue 2
Process data binary 1
Min. process cycle time [ms] 3.2
Operating conditions
Ambient temperature [°C] 0...60
Storage temperature [°C] -25...80
Protection IP 67
Tests / approvals
DIN EN 61000-6-4
DIN EN 61000-6-2
Shock resistance
DIN EN 60068-2-29 15 g (11 ms)
Vibration resistance
DIN EN 60068-2-6 5 g (10...2000 Hz)
MTTF [years] 224
Mechanical data
Weight [g] 359.5
Dimensions [mm] Ø 16
Materials stainless steel (1.4301 / 304); stainless steel (1.4404 / 316L); FKM; NBR; PBT; PC; PA; PP; TPV
Materials (wetted parts) PP
Displays / operating elements
display unit / status 2 x LED, green (cm, inch)
switching status 1 x LED, yellow
measured values alphanumeric display, 4-digit
parameter setting alphanumeric display, 4-digit
Notes Please see the technical note under "Downloads"
Pack quantity 1 pcs.
Electrical connection
Connection Connector: 1 x M12; Contacts: gold-plated
ifm electronic gmbh • Friedrichstraße 1 • 45128 Essen — We reserve the right to make technical alterations without prior notice. — EN-GB — LK3122-03 — 21.04.2016 —