Home / Products / Level Sensors / SX-LMNB Series
Skip to product information
SX-LMNB Series

SX-LMNB Series

The SensorsX SX-LMNB Series is a magnetostrictive level transmitter designed for precise and reliable liquid-level measurement in storage tanks, process vessels, interface applications, and similar industrial systems. A magnetic float follows the liquid surface, while the internal sensing element determines the float position from the transit time of a torsional pulse. The series supports rigid, flexible, and corrosion-resistant probe configurations, single- or dual-position measurement, and multiple analog and digital output options.

  • Measurement Type: Single Level / Dual Level / Level and Temperature
  • Rigid Probe Range: 50–5000 mm
  • Flexible Probe Range: 4000–20000 mm
  • Non-Linearity: <±0.05% F.S.; maximum error 150 μm for ranges below 300 mm
  • Repeatability: <±0.002% F.S.
  • Hysteresis: <0.002% F.S.
  • Output Signal: 4–20 mA / 0–5 VDC / 0–10 VDC / −5 to +5 VDC / −10 to +10 VDC / RS485 Modbus / HART / Profibus
  • Power Supply: +24 VDC ±10% or ±15 VDC ±10%
  • Probe Configurations: Rigid / Flexible / Corrosion-Resistant
  • Probe Materials: 304 Stainless Steel / 316L Stainless Steel / PP / PVDF
  • Ingress Protection: IP65 standard; IP67 / IP68 available on request
  • Operating Temperature: −40°C to +85°C / −40°C to +120°C / −40°C to +200°C
  • Explosion Protection: Flameproof Ex d IIB T5 option
  • Electrical Connection: Direct Cable / Circular Connector / Terminal
Ordering Code
$1,125.00

Product Overview

The SensorsX SX-LMNB Series is a magnetostrictive level transmitter designed for precise and reliable liquid-level measurement in storage tanks, process vessels, interface applications, and similar industrial systems. A magnetic float follows the liquid surface, while the internal magnetostrictive sensing element determines the float position from the transit time of a torsional return pulse. Rigid, flexible, and corrosion-resistant probe configurations are available, with support for single or dual-position measurement and multiple analog and digital output signals.

Main Features

  • Single- or Dual-Position Level Measurement
  • Rigid Probe Range: 50–5000 mm
  • Flexible Probe Range: 4000–20000 mm
  • Multiple Output Options: 4–20 mA / 0–5 V / 0–10 V / ±5 V / ±10 V / RS485 / HART / Profibus
  • Non-Linearity < ±0.05% F.S.
  • Repeatability < ±0.002% F.S.
  • 16-Bit D/A Conversion
  • Update Time up to 20 ms
  • Operating-Temperature Versions up to 200°C
  • Rigid / Flexible / Corrosion-Resistant Probe Configurations
  • 304 SS / 316L SS / PP / PVDF Probe Materials
  • Flameproof Ex d IIB T5 Version Available
  • IP65 Standard; IP67 / IP68 Available on Request
  • Direct Cable / Circular Connector / Terminal Electrical Connections

Product Application

Industries Served

Bulk Storage & Process Tanks
Oil & Water Interface
Hazardous & High-Temperature
Chemical storage tank level
Oil-water separator interface
Flameproof-area installations
Process vessel interface / level control
Tank bottom-water detection
High-temperature process vessels
Fuel and petroleum tank gauging
Hydrocarbon / water interface monitoring
Dual-level measurement applications

Technical Data

Measurement
Product Type Magnetostrictive Level Transmitter
Measurement Principle Magnetostrictive torsional-pulse position measurement using a magnetic float
Measured Positions 1 to 2 positions
Effective Range Rigid: 50–5000 mm / Flexible: 4000–20000 mm; custom ranges available
Measurement Type Single Level / Dual Level / Level and Temperature
Power & Output
Supply Voltage +24 VDC ±10% or ±15 VDC ±10%
Output Signal 4–20 mA / 0–5 VDC / 0–10 VDC / −5 to +5 VDC / −10 to +10 VDC / RS485 Modbus / HART / Profibus
Load — Current Output Maximum 600 Ω
Load — Voltage Output Maximum 2 mA
Operating Current <70 mA
Mechanical & Materials
Probe Construction Rigid Probe / Flexible Probe / Corrosion-Resistant Probe
Probe Material 304 Stainless Steel / 316L Stainless Steel / PP / PVDF
Pressure Rating Determined by selected float
Electronics Housing Material Stainless Steel / Aluminum
Electronics Enclosure Type A Stainless Steel / Type B Aluminum Alloy / Type C PP / Type D PVDF
Installation Interface Threaded Connection
Electrical Connection Direct Cable / Circular Connector / Terminal
Performance
Non-Linearity < ±0.05% F.S.; maximum error 150 μm for range below 300 mm
Repeatability < ±0.002% F.S.
Hysteresis <0.002% F.S.
Temperature Effect <0.007% F.S./°C
Zero Adjustment Range 100% F.S.
Update Time  Range-dependent; ≤20 ms
Environmental Conditions
Operating Temperature −40 to +85°C / −40 to +120°C / −40 to +200°C
Storage Temperature −40 to +100°C
Ingress Protection IP65 standard; IP67 / IP68 available on request
Installation & Options
Installation Threaded top or side mounting
Explosion Protection Without / Flameproof Ex d IIB T5
Measurement Configuration Single Level / Dual Level / Level + Temperature


Related Products

Ready to upgrade your sensing infrastructure?

You can directly input your requirements and the AI ​​will automatically match the most suitable model.