Submersible River & Flood Level Transmitter | L706
A heavy-duty submersible level transmitter specifically engineered for open-water hydrology, river staging, lake surveys, and automated flood warning networks.
The L706 solves the primary point of failure for outdoor environmental sensors: clogging from silt, mud, and sand. Armed with a highly porous built-in ceramic filter cap over its 316L stainless steel housing, it allows water pressure to pass through seamlessly while completely blocking abrasive particles from scratching or blocking the internal piezo-resistive silicon sensing element.
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Hydrology Optimization: Designed specifically for rivers, lakes, reservoirs, and natural open-water channels.
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Anti-Clogging Ceramic Shield: Integrated filter element prevents silt, sand, and environmental sediment from choking the sensor head.
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Telemetry Ready: Low-drift internal circuit boards output precise, stable signals compatible with standard outdoor RTUs and data loggers.
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Ruggedized Enclosure: Fully sealed IP68 housing with highly efficient lightning protection and RFI/EMI noise resistance.
Description
Built to Endure Changing Environmental Flows
Monitoring open surface water like rivers and streams presents a unique challenge: dynamic currents carry high concentrations of suspended solids, mud, and organic matter during heavy rainfall. Standard hydrostatic level probes easily become packed with debris, leading to zero-point drift or total sensor failure.
The L706 bypasses this entirely with its industrial-grade ceramic filter array. The protective head cap serves as a continuous physical barrier, eliminating the need to build expensive custom stilling wells or external filtration rigs in the field.
Key Environmental Telemetry Applications:
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River Gauging Stations: Delivers continuous, highly accurate streamflow and water-stage level data for environmental reporting.
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Early Flood Warning Networks: Fast $\le 10\text{ms}$ response times allow real-time edge triggers during sudden storm surges or flash flood events.
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Reservoir & Dam Management: Monitors lake and raw storage water levels even in deep locations subject to bottom-sediment movement.
Features
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Integrated Porous Ceramic Filter Cap: Features a high-porosity ceramic shield enclosing the sensing face. This specialized design acts as a continuous mechanical barrier, allowing water pressure to pass through seamlessly while completely blocking abrasive mud, river silt, and sand from choking the sensor diaphragm.
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Lightning & Heavy Surge Abatement: Built with highly efficient internal surge absorption circuitry that shunts high-voltage electrical transients safely away from the internal electronics. This drastically reduces field failures during severe outdoor storms and flash flood events.
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Intrinsically Safe Explosion Protection: Fully certified to Exia IICT6 safety standards. The transmitter can be safely deployed in hazardous environmental monitoring zones, industrial runoff basins, and municipal sewage pump stations where volatile gases may accumulate.
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Advanced RFI & EMI Noise Resistance: Engineered with a high-accuracy, shielded digital circuit board that actively filters out radio frequency and electromagnetic interference. This ensures rock-solid signal telemetry even when deployed alongside heavy submersible pumps or high-power cellular RTU systems.
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Hermetic IP68 Submersible Construction: Fabricated with a heavy-duty 316L stainless steel housing and isolation core, hermetically sealed to survive continuous, long-term submersion at extreme depths up to 500mH2O.
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Dynamic Low-Latency Response: Achieves an ultra-fast response time of ≤ 10 ms, making it ideal for real-time telemetry arrays and automated early-warning sirens during critical flash flood conditions.
Specification
| Parameter | Specification |
| Measurement Ranges |
0–1m up to 500mH2O |
| Sensor Protection |
Integrated porous ceramic filter cap
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| System Accuracy |
≤±0.5% FS (Standard) / ≤±0.25% or 0.1% FS available |
| Response Time |
≤ 10 ms
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| Overload / Burst |
150% FS Overload / 300% FS Burst Pressure |
| Material Build |
316L Stainless Steel housing and isolation core |
| Temperature Scope |
Operating: -20°C to +80°C / Compensated: -10°C to +70°C
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| Output Signals |
4–20mA, 0–5V, 1–5V, 0–10V, 0.5–4.5V |
| Electrical Safety |
Exia IICT6 Intrinsically Safe & CE Approved |
| Ingress Rating |
Hermetic IP68 water-proof submersed enclosure |
