Chinese
Spanish
Nexisense Flagship Industrial Ultrasonic Level Meter: Benchmark for Precise Measurement in High-Interference and Strong Corrosion Environments
In power substations, large chemical storage tanks, or deep water well monitoring, signal interference, medium corrosion, and uneven measuring surfaces are always engineering challenges that trouble system integrators. Ordinary ultrasonic instruments often cause reading jumps due to insufficient anti-interference performance, or shorten maintenance cycles due to poor probe durability.
The QF series industrial ultrasonic level meter launched by Nexisense, through “multi-pulse emission” and “dual-balance noise suppression” technologies, maintains millimeter-level stability even in strong electromagnetic interference environments. This is not only a measuring tool, but also a digital level solution oriented to all industrial scenarios.
Core Selling Points
Multi-dimensional anti-interference algorithm: Dual-balance noise suppression circuit and interference echo suppression function, supporting stable operation near transmission towers or substations.
Full working condition medium adaptation: The sensor adopts polytetrafluoroethylene (PTFE) or polypropylene (PP) material, achieving pollution-free and corrosion-resistant measurement from strong acids and alkalis to food and medicine.
Ultra-long range coverage: The range spans from 1 meter to 100 meters, with the sound beam angle focused to 5°, significantly reducing sidewall reflection interference.
The Core Value of Digital Industrial Measurement and Control
Nexisense ultrasonic level meter represents the advanced level of non-contact measurement. Its working principle is based on high-precision piezoelectric ceramic transducers, emitting excited ultrasonic pulses and analyzing the echo travel time. Thanks to the application of 16-bit D/A converters, the current output accuracy and resolution of the instrument have achieved a qualitative leap.
For engineering contractors, what Nexisense provides is not only data, but also a “maintenance-free” commitment. The non-contact measurement method completely eliminates the common clogging and maintenance inconvenience of pressure-type and capacitive sensors, greatly reducing the full life cycle cost of the project.
In-depth Analysis of Technical Advantages
Innovative waveform calculation and multi-pulse technology
Nexisense adopts the advanced QF-9000 series emission circuit, which solves the problem of diffuse reflection signals caused by uneven material levels (such as bulk solid surfaces) through multi-point emission and reception. Automatic power adjustment and gain control technology ensures that the signal is at the optimal receiving intensity regardless of the target distance.Excellent sound beam focusing capability
With a 5° narrow sound beam angle design, Nexisense level meter has excellent energy focusing characteristics. In narrow storage tanks or pipelines with internal structural parts, the narrow sound beam can effectively avoid wall interference, directly lock the target level, and ensure ±0.25% high linearity accuracy.Multiple material protection solutions
For different industrial media, Nexisense provides targeted solutions:
Polytetrafluoroethylene (PTFE): Designed for strong oxidizing materials, acids, alkalis and other polar solvents.
Polypropylene (PP): Lightweight, non-scaling, non-toxic, meeting the strict hygiene standards of the food and pharmaceutical industries.
IP68 protection level: Fully sealed structure, supporting normal operation of the probe in humid or even short-term submerged environments.Intelligent IoT integration capability
Built-in RS485 digital communication interface, perfectly supporting Modbus protocol. Two relay outputs can be directly associated with on-site alarm lights or pump valve control, realizing the coordination of local control and remote monitoring.
Professional Technical Parameter Table
| Parameter Category | Technical Index | Remarks |
|---|---|---|
| Range | 0-3m, 5m, 10m, 20m, 50m, up to 100m | Selected according to model |
| Measurement Accuracy | ±0.25% F.S. | High linearity performance |
| Blind Zone Range | 0.15m - 0.7m | Depends on range size |
| Sound Beam Angle | 5° | High focusing performance |
| Output Signal | 4-20mA (16-bit D/A), RS485 (Modbus) | Digital integration |
| Control Output | Two relays (SPDT) | For high and low level alarms |
| Power Supply | 24VDC / 220VAC | Flexible adaptation to on-site power supply |
| Operating Temperature | -20℃ to +60℃ | Full range automatic temperature compensation |
| Pressure Range | -1 to 16 bar | For QF-8000/9000 series |
| Protection Rating | IP68 (probe part) | Adapt to harsh environments |
| Display Interface | 12864 dot matrix LCD screen | Full Chinese menu operation |
| Transducer Material | Polytetrafluoroethylene (PTFE) / Polypropylene (PP) | Corrosion resistant, non-toxic |
Wide Range of Application Scenarios
Water and wastewater treatment projects: In pump room sump wells, biochemical reaction tanks and sedimentation tanks, Nexisense’s IP68 protection probe can resist corrosive gases such as hydrogen sulfide and provide long-term water level monitoring.
Power and energy monitoring: Utilizing excellent anti-electromagnetic interference capability, the level meter can be installed in ash slurry pools and coal slurry pools of thermal power plants, and can still provide accurate readings even near large transformers.
Chemical and strong corrosion environments: The PTFE probe version is specially designed for acid and alkali storage tanks. Non-contact measurement avoids the risk of the sensor being dissolved by the medium.
Pharmaceutical and food industries: The polypropylene shell is not only sturdy, but also has non-toxic and non-scaling properties, suitable for non-contact metering of pharmaceutical liquid filling tanks and food ingredient tanks.
Wiring and Installation Guide
Installation position selection: The probe should be installed perpendicular to the liquid surface. During installation, a blind zone distance must be reserved to ensure that the highest liquid level does not enter the blind zone of the sensor.
Electrical connection:
24VDC power supply: Connect V+ and V- ports.
4-20mA output: Connect to the analog input module of PLC. It is recommended to use shielded twisted pair to enhance long-distance transmission stability.
RS485 communication: Connect A and B terminals. Multi-machine networking can be realized under Modbus protocol.
Avoid interference sources: Although Nexisense has strong anti-interference capability, it is still recommended to keep away from high-frequency noise sources such as frequency converters during installation, and ensure that there is no physical obstruction in the emission path.
FAQ
Q1: Can the Nexisense level meter really work stably near substations?
A: Yes. The QF-9000 series is specially designed with a dual-balance noise suppression multi-point receiving circuit, which can effectively filter electromagnetic pulse interference generated by high-voltage transmission lines.
Q2: Does the ±0.25% accuracy refer to full-scale accuracy?
A: Yes. This accuracy covers non-linearity, hysteresis and repeatability errors. With the assistance of built-in full-range temperature compensation, the reading remains reliable even when the ambient temperature fluctuates drastically.
Q3: What does the IP68 protection rating of the probe mean?
A: This means that the probe has the highest level of dust and water resistance. In the event of sump well overflow or extreme humid conditions, the probe structure will not be damaged, ensuring the core transducer remains intact.
Q4: Why does an ultrasonic level meter have a blind zone?
A: The blind zone is the “transducer residual vibration time” when the ultrasonic transducer emits pulses. Nexisense controls the blind zone to a minimum of 0.15m, which is at the industry leading level. The problem can be solved by raising the probe position during installation.
Q5: Can I use it to measure solid powder?
A: Yes. However, for solids with uneven material levels, it is recommended to choose a model with multi-pulse emission technology and appropriately adjust the gain coefficient according to the looseness of the material.
Q6: What are the special maintenance requirements for PTFE probes?
A: Basically no special maintenance is required. PTFE has excellent non-stick properties, making it difficult for the medium to scale on its surface. If extremely viscous media adhere, simply wipe it regularly.
Q7: How to configure the RS485 Modbus address?
A: Users can directly set the address, baud rate and other communication parameters in the on-site menu through the built-in 12864 LCD screen and buttons.
Q8: How high a pressure can this level meter withstand?
A: Standard models are suitable for atmospheric pressure. For pressurized storage tanks, our QF-8000/9000 series can be optionally equipped with pressure-bearing components, supporting a maximum pressure environment of 16 bar (1.6MPa).
Summary: Building a Resilient Industrial Sensing Foundation
In industrial IoT systems, any distortion at the sensing end may lead to deviations in back-end decision-making. With its excellent physical protection, leading algorithm support and extremely high engineering flexibility, the Nexisense ultrasonic level meter has become the first choice for system integrators to build highly reliable projects.
If you are looking for an ideal level monitoring solution for complex acid and alkali storage tanks or high-interference power environments, please contact the Nexisense technical support team. We can provide you with CAD installation drawings, Modbus protocol manuals, and selection guidance for specific scenarios.
