SICK LFP0025-A4NMB Guided Wave Radar Level Sensor

USD 716.42

Guided wave radar level sensor without probe. G 3/4 A connection, 12-30 VDC supply, triple PNP/NPN and 4-20mA/0-10V outputs, IO-Link 1.1, and IP67 protection.

SKU SICK-1060171 Category
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SICK LFP0025-A4NMB Guided Wave Radar Level Sensor

Model Identifier LFP0025-A4NMB
Official Part Number 1060171
GTIN Standard 4047084247835

Technical Overview

Guided wave radar level sensor without probe. G 3/4 A connection, 12-30 VDC supply, triple PNP/NPN and 4-20mA/0-10V outputs, IO-Link 1.1, and IP67 protection.

Key Features

  • Uses advanced Time Domain Reflectometry (TDR) technology for highly precise level sensing [1.1.7].
  • Modular amplifier design without pre-installed probe allows maximum flexibility with cut-to-length rod or cable probes.
  • Rugged IP67-rated polybutylene terephthalate (PBT) housing with stainless steel 316L/1.4404 wetted parts.
  • Dual digital switching outputs (1 x PNP + 1 x PNP/NPN) combined with one analog current/voltage output (4-20 mA / 0-10 V).
  • On-board LCD display with 4 programming buttons for instant local parameterization and process value viewing.
  • Equipped with IO-Link 1.1 communication interface for smart integration, remote diagnostic capabilities, and parameter backup.
  • High immunity to foaming, surface agitation, and deposit-forming media, reducing maintenance requirements.
  • Withstands process pressures from -1 bar up to 10 bar and process temperatures up to 100 °C.

12 V DC ... 30 V DC supply voltage (24 V DC nominal), current consumption ≤ 100 mA at 24 V DC without load

Technical Specification Matrix

ParameterValue
Measurement PrincipleTDR (Time Domain Reflectometry) Guided Wave Radar
MediumFluids / Liquids
Measurement TypeContinuous and point level measurement
Probe TypeWithout probe (compatible with interchangeable mono rod or rope probes)
Process ConnectionG 3/4 A threaded
Process Pressure-1 bar ... 10 bar
Process Temperature-20 °C ... +100 °C
Accuracy of Sensor Element± 5 mm
Repeatability≤ 2 mm
Resolution< 2 mm
Response Time400 ms
Supply Voltage12 V DC ... 30 V DC
Current Consumption≤ 100 mA at 24 V DC without output load
Initialization Time≤ 5 s
Output Signal1 x PNP + 1 x PNP/NPN + 4 mA ... 20 mA / 0 V ... 10 V (automatic load switching)
Enclosure RatingIP67 (EN 60529)
Communication InterfaceIO-Link 1.1
Housing MaterialPlastic PBT
Wetted MaterialsStainless steel 1.4404 / 316L, PTFE, FKM
Ambient Operating Temperature-20 °C ... +60 °C
Maximum Probe Load≤ 6 Nm
Physical Weight (kg)0.57
Dimensions L x W x H (cm)5 x 4.3 x 10.4

Industrial Applications

1. CNC Coolant Level Monitoring in Metalworking

Monitors coolant reservoir levels in CNC machining centers where emulsified cooling lubricants create foam, spray, and sticky residues.

Problem Solved

Standard level switches or ultrasonic sensors yield erratic readings due to heavy foam build-up. The LFP Cubic's TDR guided wave radar offers full foam immunity and reliable dual continuous-and-point-level outputs to prevent machine tools from running dry.

TDR Guided WaveFoam ImmunityPoint LevelContinuous LevelCoolant Monitoring

2. Industrial Hydraulic Power Unit Reservoir Control

Continuous telemetry of hydraulic fluid level and low-level limit alarms inside hydraulic oil reservoirs of heavy equipment.

Problem Solved

Ensures the system operates safely under varying pressures (-1 to 10 bar) and fluid temperatures up to 100 °C. The sensor provides continuous high-resolution analog level data and a safety-critical digital output that warns of air ingestion risks before damage occurs.

Hydraulic OilAnalog OutputProcess Temperature 100CPoint Level AlarmReservoir Level

3. Chemical Mixing and Batch Tank Telemetry

Continuous measurement of aqueous solutions, chemicals, or cleaning fluids in buffer vessels where liquid types change periodically.

Problem Solved

Capacitive and hydrostatic sensors require recalibration whenever the fluid's dielectric constant or density changes. The LFP Cubic relies strictly on microwave propagation time-of-flight, maintaining ±5 mm measurement accuracy without recalibration for any fluid with a dielectric constant ≥ 5.

Dielectric ConstantNo Recalibration±5 mm AccuracyBatch ProcessingChemical Level
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