Pressure-type water level gauge
The pressure-type water level gauge is a hydrological instrument designed for water level and water temperature measurement. Developed through years of accumulated production technology and advanced mixed-signal processing technology, it overcomes the shortcomings of traditional analog circuit modules. It enables full-range digital linear calibration and digital temperature error compensation across the entire temperature range; compensation parameters are stored in non-volatile memory, and multiple safety protection mechanisms prevent product failure caused by the loss of calibration parameters. The circuit module is equipped with power supply monitoring and watchdog monitoring functions, and its submersible structure features full stainless steel sealing, significantly enhancing product reliability.
It is widely used in national groundwater projects and water resources monitoring; real-time water level monitoring of reservoirs and dams; monitoring of marine, river, lake, and surface water levels; unattended hydrological monitoring stations; flash flood early warning systems; urban flood control systems; and on-site liquid level monitoring in industrial processes.
High-quality and high-stability pressure sensing element
Integrated measurement of water level and temperature
Full-range digital calibration and temperature error compensation across the entire temperature range
RS485 interface and MODBUS-RTU standard communication protocol
Reverse power connection protection and overvoltage protection
Resistance to surge and electromagnetic interference (EMI)
Full stainless steel sealed structure with IP68 protection rating
| Parameter | Specification |
|---|
| Measuring Range | 0–20 m (Other ranges optional) |
| Accuracy | ±0.05% FS, ±0.1% FS |
| Long-term Stability | <0.05% FS per Year |
| Overload Capacity | 2×FS |
| Temperature Accuracy | ±0.2℃ (0–70℃) |
| Temperature Resolution | 0.01℃ |
| Compensation Temperature | 0–50℃ |
| Operating Temperature | -10–80℃ |
| Storage Temperature | -40–100℃ |
| Power Supply Range | 9–30 VDC |
| Power Protection | Reverse Polarity Protection, Overvoltage Protection |
| Housing Material | Stainless Steel |
| Protection Class | IP68 |
| Cable Material | Polyvinyl Chloride (PVC) or Polyurethane (PU) |
| Vibration Resistance | 20g, 20~5000 Hz |
| Shock Resistance | 20g, 11 ms |