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Submersible

Submersible (IP68,NEMA 6X) InstrumentationThis submersible sensor & instrument selection guide will help you discover the most appropriate product for installations where the instrumentation will be completely submerged in water or other type of liquid.

In addition you will find information to help you with the terminology and specification parameters used to define IP68 rated submersible measurement instrumentation.

Contents

  • Products
    • Freshwater
    • Wastewater
    • Seawater
    • Chemical Resistant
    • Shallow Depth
    • High Temperature
    • Intrinsically Safe
    • Marine Approved
    • Small Diameter
    • OEM Design
    • Temperature Measurement
  • Application Description
  • Help Guides

Products

Measurement instrumentation for permanent immersion in boreholes, reservoirs, rivers, coastal waters, ocean and liquid storage tanks.

  • Underwater Pressure Sensors - Pressure sensors for installing underwater which are constructed to prevent water entering sensitive components and causing damage to the sensor.
  • IP68 Submersible Protected Voltage Output Signal Pressure Transducers - Voltage signal out pressure transducers protected to IP 68 ingress protection rating for immersing in water or other compatible liquids.
  • Submersible Hydrostatic Level Sensors & Probes - Level sensors for submerging permanently in liquid to determine the level or depth of fluid by measuring the hydrostatic pressure.
  • Submersible Liquid Level Sensors - Devices protected from liquid ingress when completely immersed in a fluid for measuring liquid level and converting it to an electrical signal to send to other instrumentation.
  • Submersible Diesel Tank Level Sensors - Diesel fuel oil storage tank device for measuring liquid level and converting it to an electrical signal to send to other instrumentation protected from diesel ingress when completely immersed in the fuel oil.
  • Waterproof Absolute Pressure Sensors - Waterproof absolute pressure sensors with absolute reference ranges for monitoring underwater pipe pressures or water depth/level in applications where it is not possible or less practical to provide a vented reference for atmospheric pressure compensation.
  • Sea, Brackish or Salt Water Submersible IP68 Depth & Level Sensors - IP68 rated transmitters and transducers suitable for use with tidal and coastal salt water.
  • Digital Submersible Liquid Level Sensors - Digital communications protocol interface sensors protected from sustained immersion in liquid to prevent damage to internal sensor components, for measuring liquid level and converting it to a reading which can be transmitted using a digital communication link to other instrumentation.
  • Submersible Leachate Level Transmitters - Sensing transmitter devices protected from liquid ingress when completely immersed in a leachate for measuring leachate level and converting it to a 4-20mA current output signal to send to other instrumentation.
  • Landfill Site Submersible Leachate Level Transmitters - Sensing transmitter devices protected from liquid ingress when completely immersed in a leachate for measuring leachate level and converting it to a 4-20mA current output signal to send to other instrumentation on a landfill site used to bury waste material.
  • Marine Approved Submersible Liquid Level Sensors - Marine approval certification for use on ships. Protected from liquid ingress when completely immersed in a fluid. Device for measuring liquid level and converting it to an electrical signal to send to other instrumentation.
  • Plastic Submersible 4-20mA Liquid Level Sensors - Plastic based chemical resistant casing material, protected from liquid immersion, 4 to 20 mA current output signal liquid level sensor.
  • Submersible Pressure Transmitters - Select a 4-20mA current loop output sensor for submerging underwater to measure liquid level, water depth or pressure of submerged equipment.
  • Water Resistant Pressure Sensors with Strain Gauge Output - Water resistant strain gauge output pressure sensor for measuring hydrostatic liquid level or underwater system pressures.

Freshwater

Fresh water sensors & instruments for submersible use in environmental monitoring, water utilities, boreholes, reservoirs and other applications involving the submersion into to clean potable drinking water.

  • LMP305 Borehole Level Transmitter
  • STT-26 Submersible Temperature Probe and Transmitter
  • DCL 531 Modbus RTU RS 485 Submersible Stainless Steel Liquid Level Sensor
  • S12S SDI-12 Coms IP68 Pressure and Temperature Sensor
  • LMP307 Submersible Level Transmitter
  • DCL 571 RS485 Modbus RTU Submersible 22mm dia Groundwater & Wastewater Level Probe
  • IMSTL IP68 Water Temperature and Depth Transmitter
  • IWSL Potable Water Submersible Level Sensor
  • IMSL IP68 Stainless Steel 316L Hydrostatic Pressure Sensor
  • LMP 308 Removable Waterproof Cable Connection Water Level Sensor

Wastewater

Wastewater submersible sensors & instruments for installing in sewage treatment systems, landfill sites and other industrial waste management sites.

  • DCL 551 RS485 Modbus RTU Submersible Low Range Fuel, Oil & Wastewater Level Probe
  • LMK387 Cleanable Sewage and Sludge Pressure/Level Sensor
  • LMK809 Plastic Submersible Low Level Transmitter
  • LMK382 Low Range IP68 Waste Water Level Transmitter
  • DCL 571 RS485 Modbus RTU Submersible 22mm dia Groundwater & Wastewater Level Probe
  • LMK307 Submersible Waste Water Level Sensor
  • LMK807 Plastic Submersible Level Transmitter
  • LMK 806 Plastic 21mm diameter Submersible Level Probe

Seawater

Water tight sensors & instruments made from materials that have a high corrosion resistance to sea water.

  • DMK457 Marine Approved Pressure Transmitter
  • ATM/N Titanium Submersible Hydrostatic Pressure Transmitter
  • STT-26 Submersible Temperature Probe and Transmitter
  • LMK458 Marine Approved Hydrostatic Level Transmitter
  • LMK 487 Submersible Ballast Tank and Draught Level Pressure Transmitter
  • MTM3000 10mm diameter submersible miniature pressure transducer
  • LMK 806 Plastic 21mm diameter Submersible Level Probe
  • IMCTL Submersible Liquid Level and Temperature Transmitter
  • SWL Marine Bronze Submersible Level Sensor
  • S12C SDI-12 Seawater Pressure & Temperature Transducer

Chemical Resistant

Chemical resistant submersible sensors & instruments for use with caustic chemicals such as acid & alkaline solutions.

  • LMK809 Plastic Submersible Low Level Transmitter
  • LMK807 Plastic Submersible Level Transmitter
  • LMK 806 Plastic 21mm diameter Submersible Level Probe

Shallow Depth

Low range level measurement probes & instruments for measuring depth of rivers, stream and liquid level in small storage tanks.

  • DCL 551 RS485 Modbus RTU Submersible Low Range Fuel, Oil & Wastewater Level Probe
  • S12S SDI-12 Coms IP68 Pressure and Temperature Sensor
  • LMP307 Submersible Level Transmitter
  • LMK809 Plastic Submersible Low Level Transmitter
  • LMK458 Marine Approved Hydrostatic Level Transmitter
  • LMK382 Low Range IP68 Waste Water Level Transmitter
  • LMP 308 Removable Waterproof Cable Connection Water Level Sensor

High Temperature

High temperature protected submersible probes and instrumentation with electronics, housing and cable designed to be immersed in hot liquids.

  • LMK458 Marine Approved Hydrostatic Level Transmitter
  • LMK382 Low Range IP68 Waste Water Level Transmitter

Intrinsically Safe

Intrinsically safe approved IP68/NEMA 6X sensors for immersing in tanks on sites where instrumentation must be certified for use in hazardous areas contain volatile substances such as oil refineries, fuel depots, landfill sites and sewage treatment works.

  • LMP307 Submersible Level Transmitter
  • LMK458 Marine Approved Hydrostatic Level Transmitter
  • LMK 487 Submersible Ballast Tank and Draught Level Pressure Transmitter
  • LMK382 Low Range IP68 Waste Water Level Transmitter
  • LMK307 Submersible Waste Water Level Sensor
  • LMP 308 Removable Waterproof Cable Connection Water Level Sensor
  • DMP457 Marine Approved Pressure Transmitter

Marine Approved

Marine approved & certified sensors & instruments for submerging in marine vessel liquid storage tanks.

  • DMK457 Marine Approved Pressure Transmitter
  • LMK458 Marine Approved Hydrostatic Level Transmitter
  • LMK 487 Submersible Ballast Tank and Draught Level Pressure Transmitter
  • DMP457 Marine Approved Pressure Transmitter

Small Diameter

Small diameter submersible probes for use in narrow boreholes for applications such as hydro-logical site surveys & groundwater testing.

  • LMP305 Borehole Level Transmitter
  • LMK306 Ground Water Level Transmitter
  • MTM3000 10mm diameter submersible miniature pressure transducer
  • LMK 806 Plastic 21mm diameter Submersible Level Probe

OEM Design

Customisable low cost submersible probes for OEM design applications.

  • 18.605 G Low Cost Submersible Diesel Fuel and Water Tank Level Sensor
  • IMCL Low Cost Submersible Pressure Sensor
  • IMSTL IP68 Water Temperature and Depth Transmitter
  • IWSL Potable Water Submersible Level Sensor
  • IMSL IP68 Stainless Steel 316L Hydrostatic Pressure Sensor
  • IMTG Low Cost OEM Submersible Tank Gauging Level Sensor
  • IMCTL Submersible Liquid Level and Temperature Transmitter
  • SWL Marine Bronze Submersible Level Sensor

Temperature Measurement

Temperature measurement submersible probes for measuring liquid temperature.

  • STT-26 Submersible Temperature Probe and Transmitter
  • S12S SDI-12 Coms IP68 Pressure and Temperature Sensor
  • LMP307 Submersible Level Transmitter
  • LMK458 Marine Approved Hydrostatic Level Transmitter
  • LMK382 Low Range IP68 Waste Water Level Transmitter
  • IMSTL IP68 Water Temperature and Depth Transmitter
  • IMCTL Submersible Liquid Level and Temperature Transmitter
  • S12C SDI-12 Seawater Pressure & Temperature Transducer

Application Description

A submersible device can be installed in liquid without causing any damage as long as the installation instructions are adhered to, and the specified depth and time duration limits for submersion are not exceeded.

Assembled devices are vulnerable to liquid ingress, which can enter the device through seals and joints or permeate through components that incorporate thin membranes or porous materials.

To achieve a long lasting submersible construction, the device is constructed from materials which will not easily corrode when exposed to a fluid. Corrosion may cause the material to fail and allow liquid to enter the device, or interfere with the seal joining the corroded material to another component.

The seals used to join device components together are pressure leak tight, resilient to the expected temperature variations and resist corrosion from the surrounding fluid.

All components and seals are designed to withstand the pressure expected at the maximum required liquid depth, and this may involve a series of seals and backfilling with a potting compound or other fill material to improve longevity and reliability at greater depths.

Help Guides

Articles with more information on using and selecting submersible measurement instrumentation.

  • Using Hydrostatic Pressure Transducers for Measuring Fluid Level
  • Using absolute pressure sensors to measure hydrostatic level
  • Hydrostatic Liquid Level Sensors
  • Are all IP68 Water Resistant Protection Ratings the same
  • Choosing PVC, PUR, FEP and TPE cable types
  • Using a screw-in or waterproof pressure transmitter to measure liquid level
  • How to reduce submersible pressure sensor failures caused by moisture ingress
  • Improve the electrical termination of vented submersible pressure sensors
  • Considerations for monitoring Landfill Water Level
  • Why are Submersible applications so demanding of Pressure Transducers?
  • Problem with zero drift when installing submersible pressure sensor
  • IP Ratings
  • Determining the Signal Cable Length of a Suspended Liquid Level Transducer

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