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Submersible Level Transducer LFT3000

With over 25 years of experience, LEFOO company offers some of the most reliable, rugged, highly corrosion-resistant designs in water level pressure sensors for both analog and digital outputs. This submersible water level transducer adopts is optimal for precise level measurement in lift stations, pond level, weir, sewage, and tank level control ), capable for water/wastewater level measurement.  It is widely used for water level or liquid level measurement and control in the fields of petroleum, chemical industry, power plant, urban water supply, and hydrological exploration.


*Oil filled Silicon Sensor

*Protection level IP68

*Available for Water tank, reservoir, pool

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Specification of Submersible Pressure Transducer LFT3000

Submersible Level Transducer
Note: the transducer is optimal for water, a solution with a constant low concentration
Measurement Range0~200mH2O (Gauge Pressure)
Overload Pressure1.5 times full scales
Burst Pressure3.0 times full scales
Accuracy±0.5%F.S / ±0.25%F.S
Working Temperature-20~+85℃/-40~+120℃(Customized)
Storage Temperature-40~+100℃
Medium CompatibilityAll corrosive medium compatible with stainless steel
Output ModeTwo-wiredThree-wiredFour-wired
Output Signal4~20mA0-4.5V0-5V0-10VRS-485
Power Supply10~30VDC5VDC12~30VDC
Electrical ConnectionM12 Waterproof outlet
Protection GradeIP68
Pressure ConnectionM20*1.5/ Throw-in Type
Pressure FormGauge Pressure
CertificationSafety explosion-proof type E, RoHS, EU electrical safety standards CE

Model Select Table
LEFOO Model Select Table LFT3000

Code and Description



Submersible Water Level Sensor




Measurement range


A4 = 4~20mA(Two-wired)

Output mode


V05 = 0.5~4.5V(Three-wired)


V0 = 0~5V(Three-wired )


V10 = 0~10V(Three-wired )


RS = RS-485







0.5 = 0.5%F.S

Accuracy class


M = M12(M12 waterproof outlet)

Electrical connection

M=M20 (M20*1.5 submersible)

Pressure connection


1.0 = 1m

Cable length


2.0 = 2m


3.0 = 3m









Model selection example

Description of Submersible Pressure Transducer LFT3000

  • Adopt diffusion oil-filled silicon core

  • High accuracy and high overload capacity

  • Excellent anti-corrosion and anti-wear performance

  • Built-in temperature compensation, support Modbus-485 communication protocol (intelligent type)

  • The top stainless steel cap can be removable to prevent accidental damage of the contact diaphragm and easy to clean

Application of Water Tank Sensor

Industrial Water Tank

Municipal water supply project

Desalination treatment

wastewater processing

To make wastewater useable again or to discharge it into the environment, it has to be clean in a multistage process of a wastewater treatment plant. There are three major cleaning steps, located between the inlet and outlet of a plant: mechanical cleaning, biological cleaning, chemical cleaning. An additional part is the treatment of the sludge, which is produced during the cleaning. In all areas, process monitoring is required to take corrective action if needed. This monitoring can be ensured by measuring the respective parameters. The level measuring can be critical for proper monitoring.

Ultrasonic technology and Radar technology and are often viewed as the "best" method of level measurement, but this is not always true in the water industry. Although they offer high performance and accuracy, in many water and wastewater applications submersible level measurement is an ideal choice because of its lower cost and anti-interference-and long-term stability.

Level measurements

Continuous level measurements and limit-level detection are needed in water and wastewater treatment plants from a process engineering, water management, and safety perspective. Level monitoring and control are key factors in optimizing operation between influent flow to the plant and treatment processes and for calculating and controlling costs.

Because no single-level technology exists that is suitable for all processes, each technology has its place depending on the process material, process conditions, and environmental conditions. Installation options are also a consideration when selecting the technology that is the best fit. In many processes, multiple-level technologies may perform equally well, leaving cost as a key consideration. Selecting the appropriate level technology for an application is critical for successful measurement, controlling the initial costs of the instruments, and eliminating costs that may be associated with maintaining a less than ideal technology.

LEFOO Application of Water Tank Sensor

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