Submersible Level Transmitter: Industrial-Grade Tool for High-Precision Water Level Monitoring

Intelligent Connection to Water Conservancy: Technological Innovation of NiuBoL Submersible Level Transmitter

In the fields of smart water affairs, modern irrigation, and industrial automation control, precise measurement of liquid level is the cornerstone to ensure production safety and optimal allocation of resources. NiuBoL submersible level transmitter, with its excellent physical protection performance and advanced digital signal processing technology, has become a trustworthy level monitoring terminal in the industry.

The transmitter is based on static pressure measurement principle, converting liquid level depth into precise electrical signal. Its core adopts imported diffused silicon piezoresistive core, paired with low-power ADI professional integrated circuit, not only ensuring extremely high measurement accuracy, but also excellent long-term stability.

Core Structure and Defense System of Submersible Level Transmitter

1. Deep Waterproof and Anti-Corrosion Packaging
   NiuBoL submersible level transmitter has a compact appearance with outer diameter only Φ26.8mm. The shell is made of high-quality anti-corrosion stainless steel material, sealing connections adopt multi-layer protection structure design, protection level reaches IP68 highest standard, ensuring long-term stable operation in deep water high-pressure environment.

2. Unique Liquid Guide and Protection Design
   Front-end protection cap: Both protects the core sensor diaphragm from hard object collision, and its pore distribution is precisely calculated to guide smooth liquid contact with diaphragm, ensuring undistorted pressure transmission.
   Sloped liquid guide holes: Innovative sloped design, not only has anti-impact function, but also effectively prevents silt and impurities from adhering and blocking the probe, reducing maintenance frequency.

3. Atmospheric Compensation and Anti-Condensation System
   The transmitter cable internally integrates a dedicated vent tube, connecting the sensor internal chamber with external atmosphere, automatically compensating errors caused by ambient atmospheric pressure changes. At the same time, the internal structure adopts professional anti-condensation design, even in mine shafts or geothermal wells with drastic temperature differences, it can prevent internal water accumulation leading to circuit failure.

Intelligent Technology Advantages of Submersible Level Transmitter

Digital Signal Processing
HM series transmitter has built-in micro signal processing circuit, adopting core automatic calibration algorithm. In dynamic environments such as river level fluctuations and industrial tank stirring, the algorithm can automatically smooth values, eliminate instantaneous interference fluctuations, and output the most authentic level data.

Industrial-Grade Protection Circuit
Bidirectional protection: With reverse polarity protection, instantaneous overcurrent and overvoltage protection, fully complying with EMI protection requirements.

Remote Transmission
Supports RS485 communication interface (standard Modbus-RTU protocol), signal transmission distance up to 2000 meters, greatly facilitating networking of large-scale distributed monitoring systems.

Widely Used Application Scenarios of Submersible Level Transmitter

1. Urban Infrastructure and Smart Water Affairs
   Water plants and water supply systems: Monitoring high-rise water tanks and end storage water levels of urban water supply pipe networks.
   Sewage treatment: Real-time monitoring of liquid levels in highly corrosive sewage tanks and biochemical tanks, assisting automatic start-stop of water pumps.

2. Hydraulic Engineering and Natural Resource Monitoring
   Hydrogeological measurement: Widely used for dynamic monitoring of rivers, lakes, reservoirs, and ocean water levels, providing data support for flood control and drought relief.
   Water wells and geothermal wells: 26.8mm slim diameter design makes it easy to penetrate deep wells and mine shafts for groundwater level measurement.

3. Industrial and Agricultural Production
   Petroleum and chemical industry: Suitable for monitoring stainless steel non-corrosive oil tanks and liquid level tanks.
   Smart irrigation: Real-time monitoring of irrigation storage tank water levels in agricultural IoT systems, achieving automated water-saving irrigation.

Main Technical Parameter Table of Submersible Level Transmitter

Installation and Maintenance Precautions for Submersible Level Transmitter

To ensure long-term accuracy and service life of NiuBoL submersible level transmitter, please strictly follow the following guidelines during installation:

Wiring Compliance: Please strictly connect according to the wiring diagram provided by NiuBoL. Incorrect wiring can easily damage the built-in amplifier circuit. This product supports wide voltage input, recommended to use regulated power supply.

Probe Fixing: In places with large medium fluctuations such as rivers and storage tanks, fixing measures should be taken (such as pipe installation or adding counterweight pendant) to prevent transmitter from wear due to shaking or excessive cable tension.

Avoid Impurities: Installation position should ensure avoidance of silt deposition layers. If installed in environment with much silt, recommend hanging the transmitter more than 20cm above the silt layer.

Cable Protection: Vent cable is the "respiratory system" of the transmitter. Strictly prohibit overly tight locking or sharp bending of cable to avoid crushing vent tube. Vent tube outlet should always be installed downward to prevent rainwater and dust from entering and causing blockage.

No Disassembly: This transmitter is precision integrated structure, strictly prohibit unauthorized disassembly or poking sensitive diaphragm with sharp objects. Once diaphragm is damaged, the sensor will be permanently invalid.

FAQ:

Q1: Why does submersible level transmitter need vent cable?
A: This is to achieve atmospheric compensation. The diaphragm at the bottom of the transmitter feels the sum of "water pressure + atmospheric pressure". To obtain only the static pressure generated by liquid level, vent tube must introduce ambient atmospheric pressure into the back of the core for cancellation, thus ensuring absolute measurement accuracy.

Q2: Can NiuBoL submersible level transmitter measure strong acid and alkali liquids?
A: Standard model adopts 304/316L stainless steel, suitable for water, oil, and other media non-corrosive to stainless steel. If your measurement medium has strong corrosiveness, please contact NiuBoL for custom special anti-corrosion material or Teflon coating model.

Q3: Signal transmission distance reaches 2000 meters, will data have delay or attenuation?
A: Transmitter adopts RS485 digital communication, compared to analog current signal (4-20mA), its anti-interference ability is extremely strong with no transmission accuracy loss. Within 2000 meters, as long as qualified shielded twisted pair is used, data can still maintain high-frequency update and stability.

Q4: Can the original cable be cut short or extended during installation?
A: It is recommended to confirm required length when ordering, preferably configured by original factory. If self-extension is needed, must ensure joint is absolutely waterproof and vent tube connection is unobstructed. Improper joint handling will cause internal water ingress or huge measurement error.

Q5: What is the usual reason for fluctuating displayed values?
A: First check if cable vent port is blocked by rainwater or foreign objects. Secondly check if probe is directly impacted by water flow, recommend installation in gentle flow area or adding wave-proof tube. NiuBoL transmitter built-in calibration algorithm can handle most minor fluctuations.

Conclusion: Trustworthy Liquid Level Monitoring Partner

NiuBoL submersible level transmitter, with its precise craftsmanship, intelligent algorithms, and industrial-grade reliability, solves the pain points of liquid level monitoring in complex environments. Whether deep well exploration or smart factory management, we are committed to providing you with the most accurate data for every millimeter.

Technical Specifications and Terminology Summary:

Communication Protocol: RS485 (Modbus-RTU)
Core Sensor: Diffused silicon piezoresistive type
Signal Processing: ADI-grade operational amplifier + microprocessor
Protection Level: IP68
Measurement Accuracy: Typical 0.2%FS / 0.5%FS
Operating Voltage: 10-30V DC
Material: 304/316L stainless steel (shell), polyurethane/shielded vent cable (cable)

Are you looking for liquid level monitoring solutions for specific working conditions? Contact NiuBoL, our engineers will provide you with 1-on-1 technical selection support!