Hongnuo (shenyang) General Machinery Co., Ltd. is one of the most reliable manufacturers and suppliers of submersible liquid level sensor in China. Welcome to buy high quality submersible liquid level sensor at competitive price from our factory. We also accept customized orders.
The HNL70-A Submersible Liquid Level Sensor is an industrial-grade precision device engineered with a high-performance diffused silicon piezoresistive pressure sensor, designed to accurately measure liquid levels in petroleum, chemical, power plants, urban water supply, and hydrological exploration applications. It converts liquid static pressure (proportional to depth) into standard electrical signals, establishing a linear relationship between output and liquid height for reliable real-time monitoring.
Featuring a split structure, the submersible sensor unit adopts a fully sealed stainless steel design (316/0Cr18Ni9) with advanced leakage-proof technology, while the aluminum alloy electronic housing allows convenient wiring. Equipped with an imported laser-trimmed sensor chip, it offers temperature and zero-point compensation, ensuring exceptional stability (0.2% FS/year long-term stability) and accuracy (0.2 or 0.5 class). The sensor boasts IP68 protection (submersible part) and IP65 (wiring part), with reverse polarity protection and strong anti-interference capabilities for harsh environments.
With a wide measurement range (0.2–200m) and flexible output options (4–20mA DC two-wire, 1–5V/0–10V three-wire, RS485), it adapts to diverse system requirements. Operating within -20~80℃ and supporting optional LED/LCD displays, this sensor is easy to install-simply submerge the probe directly into the liquid for long-term use. Its compact size, durable construction, and resistance to overload (1.5x rated range) make it ideal for both deep and shallow liquid level control.
The HNL70-A Submersible Liquid Level Sensor combines technical reliability with user-friendly design, delivering consistent performance in critical industrial processes. Whether for large-scale water supply networks or chemical storage tanks, it provides cost-effective, high-precision level measurement to optimize operational efficiency.
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HNL70-A Submersible Level Transmitter Parameters |
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Specific Parameters |
Value / Description |
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Measurement Principle |
The HNL70-A submersible level transmitter uses a high-performance diffused silicon piezoresistive pressure sensor as the measuring element to accurately measure the hydrostatic pressure of the liquid, which is proportional to the liquid level depth. The signal is then converted into a standard (current or voltage) signal output through a signal conditioning circuit, establishing a linear correspondence between the output signal and the liquid depth, thus enabling the measurement of the liquid depth. |
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Product Type |
Integrated (no display) |
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Sensor Type |
Diffused silicon, Ceramic piezoresistive |
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Measurement Accuracy |
Level 0.2, Level 0.5 |
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Connection Method |
M20×1.5, Flange, No Process Connection, |
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Measurement Range |
0-0.3-200m, Customized |
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Outputs |
4-20mA (Two-wire) |
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Power Supply |
24VDC |
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Operating Temperature |
-20-80℃ |
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Digital Display |
LED, LCD, No display |
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Protection Level |
IP68 (sensor section), IP65 (wiring section) |
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Certificate |
CE certified |
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Ordering Information |
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