IFM LDL400
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Quick facts
| Availability | Confirmed on request |
| Category | Conductivity sensors |
| Warranty | 12-month (new) · 3-month (used/refurbished) |
Shipping & availability
When can LDL400 be shipped?
LDL400 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.
Can I pick up LDL400 in person?
Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.
Is express delivery available?
Yes — mention it when you request a quote for LDL400 and we'll include express shipping options in our reply.
My factory is down and I need this urgently — can you help?
For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for LDL400, subject to availability and destination.
Resistant to salt and other aggressive media Detects conductivity using the tried-and-tested inductive measuring principle Compact design facilitating installation where space is limited User-friendly communication and parameterisation via IO-Link
Specifications
Product characteristics
| Number of inputs and outputs | Number of analogue outputs: 1 |
| Process connection | threaded connection G 1 1/2 internal thread |
Application
| Special feature | Gold-plated contacts |
| Media | conductive liquids |
| Note on media | water |
| Cannot be used for | See the operating instructions, chapter "Function and features". |
| Medium temperature[°C] [°C] | -5...60 |
| Pressure rating | 10 bar; 1 MPa |
| 10 bar | 1 MPa |
| Note on pressure rating | at medium temperature 20°C |
| Vacuum resistance | -1000 mbar; -0.1 MPa |
| -1000 mbar | -0.1 MPa |
Electrical data
| Operating voltage[V] [V] | 18...30 DC |
| Current consumption[mA] [mA] | < 100 |
| Protection class | III |
| Reverse polarity protection | yes |
| Power-on delay time[s] [s] | 2 |
| Measuring principle | inductive |
Inputs / outputs
| Number of inputs and outputs | Number of analogue outputs: 1 |
Outputs
| Total number of outputs | 1 |
| Output signal | analogue signal; IO-Link |
| Output function | selectable conductivity / temperature / NaCl concentration |
| Number of analogue outputs | 1 |
| Analogue current output[mA] [mA] | 4...20; (scalable) |
| Max. load[Ω] [Ω] | 500 |
Measuring/setting range
| Measuring range[%] [%] | 0...25; (Medium temperature: 20...50 °C) |
| Measuring range[µS/cm] [µS/cm] | 100...2000000 |
| Resolution[µS/cm] [µS/cm] | 0...10.000; 1; 10.000...100.000; 10; 100.000...2.000.000; 100 |
| 0...10.000 | 1 |
| 10.000...100.000 | 10 |
| 100.000...2.000.000 | 100 |
| Measuring range[°C] [°C] | -25...100 |
Accuracy / deviations
| Accuracy[%] [%] | (0...4 %) pure water; 0,1; (4...14 %) pure water; 0,4; (14...25 %) pure water; 1; (0...12 %) water with conductivity 1000 µS/cm; 0,4 |
| (0...4 %) pure water | 0,1 |
| (4...14 %) pure water | 0,4 |
| (14...25 %) pure water | 1 |
| (0...12 %) water with conductivity 1000 µS/cm | 0,4 |
| Resolution[%] [%] | 0,1 |
| Accuracy (in the measuring range) | 2 % MW ± 25 µS/cm |
| Drift[%/K] [%/K] | 0,1 %/K MW |
| Repeatability | 1 % MW ± 25 µS/cm |
| Long-term stability | 0,5 % MW ± 25 µS/cm |
| Accuracy[K] [K] | 20...50 °C (Medium temperature ); < ± 0,5 K; -25...100 °C (Medium temperature ); < ± 1,5 K |
| 20...50 °C (Medium temperature ) | < ± 0,5 K |
| -25...100 °C (Medium temperature ) | < ± 1,5 K |
| Repeatability[K] [K] | 0,2 |
| Resolution[K] [K] | 0.1 |
Response times
| Response time[s] [s] | < 120; (T09) |
Interfaces
| Communication interface | IO-Link |
| Transmission type | COM2 (38,4 kBaud) |
| IO-Link revision | 1.1 |
| SDCI standard | IEC 61131-9 |
| Profiles | Smart Sensor - SSP 4.3.2; Measuring and Switching Sensor, floating point, 2 channel; Common - I&D; Identification and Diagnosis; Extension; Quantity detection, switches when value exceeds the setpoint; Function; ProductURI |
| Smart Sensor - SSP 4.3.2 | Measuring and Switching Sensor, floating point, 2 channel |
| Common - I&D | Identification and Diagnosis |
| Extension | Quantity detection, switches when value exceeds the setpoint |
| Function | ProductURI |
| SIO mode | no |
| Required master port type | A |
| Process data analogue | 1 |
| Min. process cycle time[ms] [ms] | 6.4 |
| IO-Link process data (cyclical) | conductivity; 32; temperature; 32; status; 4; binary switching information; 4 |
| conductivity | 32 |
| temperature | 32 |
| status | 4 |
| binary switching information | 4 |
| IO-Link functions (acyclical) | NaCl concentration; memory; operating hours counter; internal temperature; simulation function |
| Supported DeviceIDs | default; 1593 |
| default | 1593 |
Operating conditions
| Ambient temperature[°C] [°C] | -25...50 |
| Storage temperature[°C] [°C] | -25...75 |
| Protection | IP 68; IP 69K; (7 days / 3 m water depth / 0.3 bar: IP 68) |
Tests / approvals
| EMC | DIN EN 61326-1; group 1: class B |
| DIN EN 61326-1 | group 1: class B |
| Shock resistance | DIN EN 60068-2-27; 50 g (11 ms) |
| DIN EN 60068-2-27 | 50 g (11 ms) |
| Vibration resistance | DIN EN 60068-2-6; 20 g (10...2000 Hz) |
| DIN EN 60068-2-6 | 20 g (10...2000 Hz) |
| MTTF[years] [years] | 127 |
| UL approval | File number UL; E364788 |
| File number UL | E364788 |
Mechanical data
| Weight[g] [g] | 404.4 |
| Materials | housing: PP reinforced fibre; Lock nut: PP reinforced fibre |
| Materials (wetted parts) | housing: PP reinforced fibre; Lock nut: PP reinforced fibre; O-ring: EPDM |
| Process connection | threaded connection G 1 1/2 internal thread |
| Surface characteristics Ra/Rz of the wetted parts | Ra < 0.8 µm |
Remarks
| Remarks | MW = measured value |
| Pack quantity | 1 pcs. |
Electrical connection
| Connector | 1 x M12 (EN 61067-2-101); coding: A; Contacts: gold-plated |









