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Submersible Level Transmitter: 0~1000m High-Precision Level Measurement and System Integration Solution
Product Overview
In scenarios such as petrochemical storage tank monitoring, urban water supply and drainage, sewage treatment plants, deep well water level measurement, metallurgical industry slurry level control, and power plant cooling water systems, level measurement is a key link to achieve process control, trade settlement, and equipment protection. Traditional float or ultrasonic level meters often lack reliability in highly corrosive, high-temperature and high-pressure, or strong stirring environments. The submersible level transmitter has become the mainstream choice for industrial level measurement due to its simple structure, convenient installation, and high long-term stability.
The Nexisense submersible level transmitter is composed of a fully sealed isolated diaphragm oil-filled level sensor and a dedicated instrument circuit. It has outstanding advantages such as high measurement accuracy, good stability, long service life, and convenient installation. The product uses a unique process sealing structure with excellent anti-leakage performance and can work reliably when submerged in liquid for a long time. According to the mathematical model relationship among the measured liquid pressure, density, and level, the level sensor measures the liquid depth pressure proportional to the level depth, which is converted by the amplification circuit into a standard 4-20mA current signal (or RS485 digital signal) to provide accurate level data for the upper control system.
The product diaphragm is made of 316L stainless steel, the housing is made of 304 stainless steel, with IP68 protection rating. It has strong corrosion resistance and waterproof performance, and is widely suitable for various measurement media such as water, oil, acid, alkali, and salt.
Core Technical Parameters
| Parameter | Specification |
|---|---|
| Measuring Range | 0~1000 meters (customizable) |
| Accuracy Grade | 0.1%FS, 0.25%FS, 0.5%FS |
| Output Signal | 4-20mA (two-wire), RS485 (optional) |
| Supply Voltage | 12V~36V DC (customizable 3.6-12V IoT version) |
| Medium Temperature | -30~80℃ |
| Ambient Temperature | -10~50℃ |
| Zero Temperature Coefficient | 0.03% span/°C |
| Thread Connection | M20×1.5, G1/2 or other customized connectors |
| Temperature Range | -35~75℃ (high precision temperature 15-25℃) |
| Load Characteristics | R=50×(U-12) Ω (U is supply voltage) |
| Protection Rating | IP68 |
In addition, Nexisense can provide product application customization according to customer environmental requirements (such as special media, explosion-proof requirements, IoT integration, etc.).
Product Performance and Features
The Nexisense submersible level transmitter demonstrates the following core advantages in engineering applications:
Fully Sealed Isolated Diaphragm Oil-Filled Structure: Stable and reliable performance, effectively isolates the medium from the sensor, excellent anti-leakage performance, suitable for long-term submersion in liquid;
High Measurement Accuracy and Stability: Optional 0.1%FS high-precision grade, perfect temperature compensation, small zero drift, good long-term stability;
Convenient Installation: Submersible design, no need for drilling or complex brackets, works by simply putting it into the liquid, short construction period;
Multiple Signal Outputs: Standard 4-20mA analog output, supports RS485 digital communication, easy to connect to PLC, DCS, SCADA or IoT edge modules;
Wide Medium Adaptability: 316L stainless steel diaphragm + 304 stainless steel housing, strong corrosion resistance, can measure water, oil, acid, alkali, salt and other media;
Strong Protection Capability: IP68 protection rating, can operate reliably for a long time in harsh industrial environments;
Strong Customization Capability: Supports personalized customization of range, output mode, connector specifications, power supply voltage, etc., to meet the needs of different engineering projects.
These features make the product particularly suitable for continuous production processes and automation control systems that require high reliability and long-life level measurement.
Typical Application Scenarios
Petrochemical Industry: Level monitoring and control of storage tanks, reaction kettles, and oil product delivery pipelines;
Water Treatment and Municipal Engineering: Real-time measurement of sewage treatment plants, water supply networks, deep well water levels, and river channel levels;
Power Industry: Monitoring of boiler feed water, cooling towers, and desulfurization tower slurry levels;
Metallurgy and Mining: Measurement of slurry ponds, molten metal levels, and tailings pond levels;
Food and Pharmaceutical: Hygienic level measurement of fermentation tanks, liquid storage tanks, etc. (optional full 316L stainless steel version);
System Integration Projects: Integration with PLC, DCS, SCADA or IoT platforms to achieve remote level monitoring and automatic control.
For system integrators and engineering companies, the standardized output interface and reliable long-term stability of this submersible level transmitter can significantly reduce on-site installation and commissioning difficulties and reduce maintenance costs.
Selection Guide and Integration Precautions
Selection Points:
Select the measuring range according to the actual maximum liquid level depth (it is recommended to leave 10%~20% margin);
For occasions with high accuracy requirements, prioritize the 0.1%FS grade;
For corrosive medium environments, 316L stainless steel diaphragm and housing are recommended;
For projects requiring remote communication, select the RS485 output model;
For special power supply environments, a customizable 3.6-12V low-power IoT version is available.
Integration Precautions:
During installation, ensure the sensor is fully submerged in the liquid to avoid interference from air bubbles or suspended matter;
It is recommended to use shielded cables for signal lines; signal attenuation should be considered for long transmission distances;
When integrating with PLC or DCS, it is recommended to use 4-20mA two-wire wiring to simplify cabling;
Regularly check cable sealing and clean the diaphragm surface to prevent scaling from affecting accuracy after long-term use;
When used in high-viscosity or crystallizing media, it is recommended to add protective sleeves or perform regular maintenance.
The Nexisense technical team can provide level calculation support, selection confirmation, and integration matching services with IoT edge modules.
FAQ
Q1. How deep a liquid level can the Nexisense submersible level transmitter measure at maximum?
The standard measuring range can reach 0~1000 meters and can be customized according to actual project needs, meeting high-level measurement applications such as deep wells, reservoirs, and large storage tanks.
Q2. What output signals does this level transmitter support? Is it convenient for system integration?
It supports standard 4-20mA current output and RS485 digital output, which can be directly connected to PLC, DCS, SCADA or IoT platforms. System integration is very convenient.
Q3. How to choose the product accuracy grade? What is the main difference between 0.1%FS and 0.5%FS?
0.1%FS is the high-precision version, suitable for precision metering occasions; 0.5%FS is conventional precision with high cost performance, suitable for general process control. It is recommended to choose according to process control accuracy requirements.
Q4. What is the medium temperature range? Can it be used for high-temperature or low-temperature liquids?
Medium temperature -30~80℃, which can meet most industrial liquid measurement needs. For special high-temperature or low-temperature applications, please contact Nexisense for customization.
Q5. Is the installation of the submersible level transmitter convenient? Does it require drilling?
The installation is very convenient. It only needs to be put directly into the liquid without drilling holes in the container wall or installing complex brackets. It is especially suitable for existing storage tank renovation projects.
Q6. What is the product protection rating and corrosion resistance performance?
Protection rating IP68, diaphragm material 316L stainless steel, housing 304 stainless steel, with extremely strong waterproof and corrosion resistance capabilities. It can work long-term submerged in corrosive media such as acid, alkali, and salt.
Q7. Does Nexisense support product customization? Such as special ranges, power supplies or interfaces?
Yes, it supports comprehensive customization, including range, output signal, power supply voltage, connector specifications, IoT low-power versions, etc. Personalized solutions can be provided according to the customer's specific environment and system requirements.
Q8. Compared with float level gauges or ultrasonic level gauges, what advantages does the submersible level transmitter have?
Simpler structure, no mechanical moving parts, longer service life, more convenient installation and maintenance, strong anti-interference ability, especially suitable for harsh working conditions with high corrosion, high viscosity or strong stirring.
Summary
The Nexisense submersible level transmitter provides a stable and reliable hardware solution for industrial level measurement with its fully sealed isolated diaphragm oil-filled structure, optional high-precision configuration, IP68 strong protection capability, and rich output interfaces. Its wide measuring range, convenient installation, and good long-term stability help system integrators, engineering companies, and project teams reduce implementation difficulty and improve the overall performance and data accuracy of automation control systems.
If your project involves level measurement needs such as storage tank level monitoring, sewage treatment, water resource management, or process control, please feel free to contact the Nexisense technical support team. We will provide detailed selection advice, engineering calculation support, and complete system integration solutions based on specific level ranges, medium characteristics, on-site working conditions, and system integration requirements, helping your project to be implemented efficiently and operate stably.
