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    • Home
    • Pressure Measurement
      • Analog pressure sensors
      • Digital pressure sensors
      • Digital pressure gauges
      • Analog pressure gauges
      • Atex sensors
      • Wireless Pressure Sensors
      • Marine Approved
    • Level measurement
      • Screw-in level
      • Submersible level
    • Temperature Measurement
      • Temperature Transmitters
      • Temperature Probes
    • Instrumentation
      • Dataloggers
      • Displays and indicators

  • Home
  • Pressure Measurement
    • Analog pressure sensors
    • Digital pressure sensors
    • Digital pressure gauges
    • Analog pressure gauges
    • Atex sensors
    • Wireless Pressure Sensors
    • Marine Approved
  • Level measurement
    • Screw-in level
    • Submersible level
  • Temperature Measurement
    • Temperature Transmitters
    • Temperature Probes
  • Instrumentation
    • Dataloggers
    • Displays and indicators

Submersible level sensors and level transmitters

SLS-LC Submersible level transmitter – Ceramic Sensor

SLS-LC Submersible level transmitter – Ceramic Sensor

 Introducing the SLS-LC Series of Submersible Level Sensors, a remarkable innovation in level measurement technology. These sensors are engineered with an advanced Ceramic (96% Aluminium Oxide Al2O3) piezo-resistive sensing element, skilfully encased in a sturdy stainless steel housing to ensure durability and resilience.

  • 0.35 up to 100m measurement
  • low powered millivolt, 4-20mA, 0-10V, or 0.5 to 4.5V output options
  • 10 bar external pressure tested
  • materials suitable for potable water applications

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SLS-D Digital submersible level transmitter – SDI-12

SLS-LC Submersible level transmitter – Ceramic Sensor

 Discover the SLS Series Submersible Level Transmitters, designed for precise environmental monitoring and flood defence systems. Housed in a robust stainless steel casing, these transmitters feature an isolated diaphragm silicon piezo-resistive sensing element for utmost accuracy. Operating continuously in liquids up to 100m depth, they convert analog output to SDI-12 digital communications using the eco-friendly SDI-12 version 1.4 protocol, providing serial level and temperature readings. Our powerful SDI-12 communications software enables sensor calibration, density correction, and connection of up to 9 sensors, streamlining data logging and diagnostics. The onboard 16-bit microprocessor ensures exceptional accuracy and stability. Plus, with the USB interface (USB-SDI12-PRO), configuring and logging data for up to 10x SDI-12 devices becomes a breeze. Trust the SLS Series for unparalleled performance and peace of mind in challenging applications. 

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SLS-A Submersible level transmitter – Analogue Output

 Discover the SLS Series Submersible Level Transmitters – cutting-edge devices designed for precise liquid level measurement. Encased in a durable stainless steel housing, these transmitters feature an isolated diaphragm silicon piezo-resistive sensing element, providing a permanent submersible capability in liquids up to 100m deep. Choose between a raw millivolt output for low-power applications or an integrated microprocessor option offering amplified outputs like 4-20mA, 0-10V, or 0.5 to 4.5V ratiometric signals. The onboard 16-bit microprocessor ensures exceptional linearisation, temperature compensation, and calibration, delivering unmatched accuracy, stability, and repeatability. Ideal for environmental monitoring, flood defense systems, and river, reservoir, or borehole measurements. Empower your applications with the precision and reliability of the SLS series.


  • Pressure Ranges: Level ranges from 0.5 mWG up to 100 mWG.
  • Output Signal: Various output configurations available, including low power consumption millivolt signal.
  • Accuracy: <±0.25%, <±0.15%, <±0.1%.
  • Electrical Connections: High integrity overmolded cable assembly.
  • Media Compatibility: 316 Stainless steel construction.
  • Special Features: Optional temperature output.

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LMK 307 Stainless Steel Level Transmitter

 LMK 307 Level Transmitter: Accurate, continuous level measurement for diverse applications including water, wastewater, fuel, and oil. Features a flush-mounted ceramic sensor for precision. Ideal for drinking water systems, groundwater monitoring, stormwater systems, wastewater treatment, water recycling, dumpsite monitoring, fuel storage, tank farms, and biogas plants. Ensures reliable and efficient monitoring across various fluid types.


  • Pressure Ranges: 0-4 mH2O to 0-250 mH2O
  • Output Signal: 2-wire 4-20 mA, 3-wire 0-20 mA/0-10 V
  • Accuracy: Good linearity and excellent long-term stability
  • Electrical Connections: Options for different cables and elastomers
  • Process Connections: 27 mm diameter, easy handling
  • Media Compatibility: Suitable for gas and dust, customer-specific versions available
  • Special Features: Intrinsically safe (Ex ia), SIL 2 compliant, customizable pressure ranges

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LMK 306 Stainless Steel Level Transmitter

 Introducing the LMK 306 Slimline Probe: Ideal for precise, compact level measurement. Designed for tight spaces, it provides accurate readings in various environments, including clean or slightly contaminated water. With multiple cable options, it suits diverse needs in applications like water level measurement, groundwater monitoring, and more. Choose the LMK 306 for reliable and efficient measurements.


  • Pressure Ranges: 0 … 6 mH2O to 0 … 200 mH2O
  • Output Signal: 2-wire: 4 … 20 mA, others on request
  • Accuracy: Excellent accuracy and long-term stability
  • Electrical Connections: Simple electrical connections
  • Process Connections: Suitable for hydrostatic level measurement in 3/4″ pipes
  • Media Compatibility: Suitable for various media
  • Special Features: Compact 17 mm diameter, customisable cable options

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LMK 806 Plastic Level Transmitter for Aggressive Media

 LMK 806: Advanced, compact 21 mm diameter probe for continuous level measurement in tight spaces. Features a flush-mounted ceramic sensor, ideal for confined environments with polluted and aggressive fluids. Offers easy cleaning and a choice of cable and elastomer materials for media compatibility. Delivers superior performance and versatility for various level measurement challenges.


  • Pressure Ranges: 0-6 mH2O to 0-200 mH2O
  • Output Signal: 2-wire 4-20 mA, other options available
  • Accuracy: Good linearity and long-term stability
  • Electrical Connections: Options for different cable materials
  • Process Connections: 21 mm diameter, ideal for 3/4″ pipes
  • Media Compatibility: Suitable for hydrostatic level measurement
  • Special Features: Customisable versions, including special pressure ranges available

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LMK 807 Plastic Level Transmitter for Aggressive Media

LMK 807 Plastic Level Transmitter for Aggressive Media

LMK 807 Plastic Level Transmitter for Aggressive Media

 LMK 807 Plastic Submersible Probe: Accurate, continuous level measurement in polluted and aggressive environments. Features a durable, flush-mounted ceramic sensor for easy cleaning of solid deposits. Offers a choice of cable and elastomer materials for media compatibility. Ideal for precise measurements and productivity in harsh conditions.


  • Pressure Ranges: Suitable for highly polluted and aggressive environments
  • Output Signal: Ensures accurate and uninterrupted level measurement
  • Accuracy: Flush-mounted ceramic sensor for precise measurements
  • Electrical Connections: Offers a range of cable materials for optimal compatibility
  • Process Connections: Easy cleaning, solid deposits slide off effortlessly
  • Media Compatibility: Range of elastomer materials available for various media
  • Special Features: Designed for durability and efficiency in harsh conditions

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LMK 809 Plastic Level Transmitter for Aggressive Media

LMK 807 Plastic Level Transmitter for Aggressive Media

LMK 807 Plastic Level Transmitter for Aggressive Media

 LMK 809 Plastic Submersible Probe: Reliable continuous level measurement in polluted and aggressive media. Features a capacitive ceramic sensor for accuracy in challenging conditions. Flush-mounted design for easy cleaning of solid deposits. Offers customisable cable and seal materials for media compatibility. Ideal for demanding environments, ensuring exceptional performance and durability.


  • Pressure Ranges: 0-0.4 mH2O to 0-100 mH2O
  • Output Signal: 2-wire 4-20 mA, 3-wire 0-10 V, others available
  • Accuracy: High precision, especially for tank level measurement
  • Electrical Connections: Various cables and elastomers, prepared for pipe mounting
  • Process Connections: 45 mm diameter
  • Media Compatibility: Chemical and overpressure resistance, ideal for viscous/aggressive media
  • Special Features: Diaphragm 99.9% AI2O3, housing in PP-HT or PVDF

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DCL 531 Stainless Steel Probe with RS485 Modbus RTU

LMK 807 Plastic Level Transmitter for Aggressive Media

DCL 531 Stainless Steel Probe with RS485 Modbus RTU

 Introducing the DCL 531 Stainless Steel Probe with RS485 Interface, a cutting-edge product designed for industrial applications. This innovative probe utilises the renowned Modbus RTU communication protocol, an open standard widely adopted in industrial communication. With its master-slave architecture, the DCL 531 enables seamless interaction between up to 247 slave devices and a master unit, ensuring efficient data transfer in binary format. At its core lies a top-of-the-line stainless steel sensor, meticulously crafted to meet stringent precision requirements and exhibit exceptional long-term stability. Experience superior measurement accuracy and reliability with the DCL 531 Stainless Steel Probe.

  • Range: from 1 mH2O up to 250 mH2O
  • Outputs: RS485 with Modbus RTU protocol
  • Main Features: pressure value, diameter 26.5 mm, small thermal effect, reset function

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Datasheets

SLS-LC-Submersible-level-sensor (pdf)Download
SLS-D-SDI-12-Submersible-level-sensor-Digital (pdf)Download
SLS-A-Submersible-level-sensor-Analogue (pdf)Download
LMP-307-Stainless-Steel-Probe (pdf)Download
LMK-306-Stainless-Steel-Probe (pdf)Download
LMK-806-Plastic-Probe-for-Aggressive-Media (pdf)Download
LMK-807-Plastic-Probe-for-Aggressive-Media (pdf)Download
LMK-809-Plastic-Probe-for-Aggressive-Media (pdf)Download
DCL-531-Stainless-Steel-Probe-with-RS485-Modbus-RTU (pdf)Download
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