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YEX-HY-LLT-01 Inputting Type Liquid Level Transmitter
Submersible liquid level transmitter for reliable tank, reservoir and water treatment level data.
YexSensor YEX-HY-LLT-01 is an inputting type liquid level transmitter designed for continuous liquid level monitoring. It uses a stainless steel structure, waterproof cable and digital RS485 communication to support reliable integration in water supply, sewage, reservoir and industrial liquid level systems.
Core Technical Advantages
Diffused silicon sensing element provides stable pressure-to-level conversion for continuous monitoring.
Stainless steel probe and IP68 submersible design support long-term use in water level environments.
Low-power circuit design with RS485 Modbus RTU output is suitable for distributed monitoring cabinets.
Built-in protection design helps improve resistance to reverse polarity, overcurrent and field interference.
Application Scenarios
Water plant and clean-water tank level monitoring
Sewage treatment basin level measurement
Reservoir, well and river level monitoring
Urban water supply and drainage projects
Industrial tank level automation
Technical Performance Parameters
| Brand / Model | YexSensor / YEX-HY-LLT-01 |
| Product Type | Inputting type liquid level transmitter |
| Power Supply | DC 10-30V, typical 24V |
| Maximum Power | 0.2W |
| Output | RS485 Modbus RTU |
| Sampling Time | <=1s |
| Long-Term Stability | +/-0.2%FS/year |
| Protection Grade | IP68 |
| Probe Diameter | Phi 26.8 mm |
| Overload Capacity | Less than 1.5 times range |
| Medium | Non-corrosive oil or water compatible with stainless steel |
| Medium Temperature | Long-term <=60 deg C |
| Communication Distance | Up to 2000 m under proper RS485 cabling conditions |
Installation and Wiring Guide
Lower the transmitter vertically into the measured liquid and avoid direct impact from inlet water, stirring blades or sediment accumulation. Fix the cable so the probe remains at a stable measuring point.
Wiring note: Typical wiring: power positive, power negative, RS485 A and RS485 B. Keep the vented cable path unobstructed when using gauge-pressure structures.
Maintenance and Commissioning Guide
Inspect cable strain relief, sealing and probe cleanliness regularly. Avoid pulling the transmitter by the cable during installation or maintenance.
Frequently Asked Questions
Q1: Is this product submersible?
A1: Yes. The transmitter is designed for submerged liquid level measurement with IP68 protection.
Q2: What output does it support?
A2: It supports RS485 Modbus RTU for digital monitoring systems.
Q3: Can it be used in sewage treatment?
A3: Yes, provided the medium is compatible with the probe material and the installation avoids heavy sediment burial.
Q4: How is the range selected?
A4: The measuring range should match tank depth, reservoir depth or project design requirements.
Q5: What should be avoided during installation?
A5: Avoid strong impact, cable tension, blocked venting and placing the probe in heavy sludge.
Q6: Can it work with PLC systems?
A6: Yes. Modbus RTU allows straightforward PLC or RTU communication.
Q7: Does it need regular cleaning?
A7: Cleaning frequency depends on water quality. Sediment or biofilm should be removed during routine checks.
Q8: What causes abnormal level readings?
A8: Check power supply, wiring polarity, blocked pressure port, damaged cable or incorrect range configuration.
Summary
YEX-HY-LLT-01 provides a durable submersible level measurement solution for water infrastructure and industrial automation projects that need stable digital level data.
