NBL-L-SMP4601 Split-Type Level Transmitter with Real-Time Level Display Output 4-20mA

NBL-L-SMP4601 Split-Type Level Transmitter: The Excellent Choice for Precise Level Measurement

In the field of modern industrial automation and IoT monitoring, the accuracy of level measurement directly affects production safety and resource allocation efficiency. The NBL-L-SMP4601 series general-purpose split-type level transmitter launched by NiuBoL is specifically designed to meet the demand for real-time level monitoring under complex working conditions. Combining diffused silicon pressure sensing technology with a robust split-type structure, this product provides users with stable, reliable, and intuitive level data support.

Technical Core: Diffused Silicon Sensor and Signal Conversion

The core of NBL-L-SMP4601 lies in its integrated high-performance diffused silicon pressure sensor. According to the hydrostatic principle, liquid depth is proportional to the generated hydrostatic pressure. The transmitter captures pressure fluctuations at the bottom of the liquid through a precision sensor and converts them into a standard 4mA-20mA DC two-wire current signal via built-in signal conditioning circuitry.

This conversion not only ensures lossless signal transmission over long distances but also, through the split-type header design, achieves a user-friendly layout where the sensor is immersed in the liquid while the display is installed in an easily observable area, completely solving the pain point of traditional integrated devices being inconvenient to read in deep wells or sealed containers.

Significant Product Features and Technical Advantages

Unique Split-Type Structural Design

Unlike traditional integrated submersible level gauges, NBL-L-SMP4601 adopts a split-type architecture. The sensor portion extends deep into the medium at the bottom, while the electronic circuitry and display module are located in a protected cast aluminum housing. This design not only facilitates on-site wiring but also effectively extends the service life of the circuit system, with particularly obvious advantages in high-temperature or fluctuating medium environments.

Real-Time Level Display and On-Site Commissioning

The device header integrates a high-brightness real-time level display function, allowing operators to directly grasp the liquid level height without external instruments. In addition, the product reserves convenient zero and full-scale debugging interfaces, greatly reducing calibration difficulty during long-term maintenance and ensuring the measurement remains in optimal accuracy state.

Explosion-Proof Certification for Harsh Environments

For high-risk industries such as petroleum and chemical, NiuBoL has reinforced safety performance in all aspects. This product features dual explosion-proof certifications:
Flameproof mark: Ex d ⅡB T6 Gb
Intrinsically safe mark: Ex ia ⅡC T6 Ga
The high-level explosion-proof design ensures absolute safety of the equipment in flammable and explosive gas environments, complying with stringent industrial production standards.

Excellent Anti-Interference and Stability

The circuit system has been optimized with extremely strong electromagnetic compatibility (EMC). Whether in large pump rooms or factory workshops with severe electrical interference, the 4-20mA signal output maintains linear stability, with long-term stability deviation controlled within ±0.3%FS/year, significantly reducing users' later maintenance costs.

NBL-L-SMP4601 Split-Type Level Transmitter Core Technical Parameters Detailed Table

To facilitate engineering selection, the detailed specification parameters of NBL-L-SMP4601 are listed below:

NBL-L-SMP4601 Split-Type Level Transmitter Wide Application Fields and Industry Solutions

With its extremely high media compatibility (applicable to liquids non-corrosive to 316L stainless steel), NiuBoL NBL-L-SMP4601 has been successfully applied in multiple key industries:

• Urban water supply and wastewater treatment: Used in urban tap water networks, underground reservoirs, and sewage treatment plants to monitor water level changes in real time and cooperate with PLC systems for automatic pump start/stop.

• Petroleum and chemical production: Monitoring levels in oil storage tanks and reactors. Relying on its explosion-proof characteristics, it plays an important role in refineries and fine chemical production lines.

• Hydrological exploration and hydraulic engineering: Used for level monitoring in rivers, lakes, reservoirs, and dams. Its stable compensation temperature (-10℃ to 80℃) ensures measurement consistency across different seasonal climates.

• Industrial equipment supporting: Paired with large hydraulic systems, cooling towers, and lubricating oil tanks to provide precise level data feedback and prevent equipment dry-running risks.

FAQ:

Q1: What is the main significance of the split-type structure?
A: The split-type design allows separation of the sensor from the display/control circuit. This prevents the circuit board from directly contacting complex liquid environments or high-temperature environments. At the same time, the display header can be installed at a more ergonomic height, allowing workers to read real-time levels without approaching hazardous sources.

Q2: How to choose the appropriate range?
A: It is recommended to select the range based on the actual maximum liquid level height, with the optimal working range between 30% and 80% of full scale. For example, for a pool with a depth of 8 meters, a 0-10m H₂O range specification is recommended.

Q3: What are the requirements for the measured medium?
A: The measuring end of NBL-L-SMP4601 uses 316L stainless steel and fluororubber seals. As long as the medium has no strong corrosiveness to these two materials (such as clean water, ordinary crude oil, some weak acid and alkali liquids), it can be used stably for a long time.

Q4: Can the cable length be customized during installation?
A: Yes, NiuBoL provides customized cable services. Due to the adoption of 4-20mA signal output, this signal has extremely strong long-line transmission capability, and even if the cable is extended to hundreds of meters, it will not affect measurement accuracy.

Installation and Maintenance Recommendations

To ensure long-term efficient operation of NBL-L-SMP4601, please follow the following recommendations during installation:

• Sensor position: The sensor should be installed in a location where liquid flow is relatively stable, avoiding installation near water inlets or agitators. If installation in a highly turbulent area is necessary, it is recommended to add a protective sleeve.

• Lightning protection: When used in outdoor open-air environments, it is recommended to install lightning protection devices at the signal input end to cope with transient overvoltages caused by thunderstorms.

• Cable protection: Although the dedicated polyethylene cable is sturdy, it should be protected with conduit when passing through walls or sharp metal edges to prevent damage to the cable sheath causing water ingress into the internal vent tube.

• Regular cleaning: If the medium contains a lot of impurities or crystalline substances, regularly check the pressure-sensing diaphragm at the sensor end, rinse with clean water, and do not use hard objects to scrape.

Summary

The NiuBoL NBL-L-SMP4601 split-type level transmitter combines the sensitivity of diffused silicon sensors with the durability of industrial-grade explosion-proof housings. It not only provides precise 4-20mA analog signals for control system scheduling but also offers an intuitive observation interface through on-site real-time display. Whether addressing the stringent explosion-proof requirements of petrochemicals or basic monitoring needs of urban water resources, NBL-L-SMP4601 is a mature solution with excellent cost-effectiveness and leading technology.

Do you need customized selection recommendations for specific working conditions (such as high temperature, corrosive media)? You can tell me the specific measurement environment, and I will provide you with more detailed technical support.