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The BT8006S is a high-precision, low-power submersible piezoresistive osmometer designed for long-term water level and hydrostatic pressure monitoring. Featuring full digital temperature compensation, 0.05% F.S accuracy, RS485 MODBUS-RTU output, and a fully sealed 316L stainless steel IP68 structure, it is ideal for hydrology, groundwater, dam safety, and wastewater treatment applications.
Ⅰ. Introduction
This product is a submersible hydrostatic level (water level) measurement instrument. It is a liquid level measurement product realized through continuous accumulation of production process technology, utilizing advanced hybrid signal processing techniques and special compensation methods. It can achieve full-scale digital linear correction and full-temperature-range digital temperature error compensation. Compensation parameters are stored in non-volatile memory, and multiple safety protection mechanisms prevent the product from becoming unusable due to loss of calibration parameters.
The circuit section is equipped with power supply monitoring and watchdog supervision functions, while the mechanical section features a stainless steel fully sealed structure, significantly enhancing the overall reliability of the instrument.
Since the circuit entirely employs low-power devices, the overall power consumption is very low, approximately 4mA during full-speed operation. This characteristic is particularly useful in scenarios requiring battery power.
It is widely used in freshwater and drinking water treatment, wastewater and sewage treatment, seawater measurement, and surface water or groundwater monitoring in the hydrology and water conservancy industries.
Ⅱ. Advantages
- High-stability liquid level measurement sensing element with excellent long-term stability.
Accuracy up to 0.05% F.S. (linearity, repeatability, hysteresis). - Strong overload capability, with an overload capacity of 3 to 5 times full scale.
- Uses a hybrid signal microprocessor and high-order fitting algorithms to compensate for accuracy.
- RS485 standard MODBUS-RTU protocol, compatible with DCS or PLC systems.
- Low power consumption, consuming approximately 4mA during full-speed operation, making it advantageous when powered by an external battery.
Ⅲ. Technical Specifications
| Main Performance Indicators | |
| Range | 0～10、20、50、100mH2O |
| User-specified range, factory calibrated. | |
| Measurement Accuracy | 0.2% F.S |
| Resolution | 0.005％F.S |
| Long-term Stability | 0.1%F.S/year |
| Overload Capacity | 5X F.S |
| Temperature Characteristics | |
| Zero Temperature Coefficient | 0.005％ F·S/℃ |
| Full-scale Temperature Coefficient | 0.005％ F·S/℃ |
| Compensation Temperature | 0～50℃ |
| Operating Temperature | -20～85℃ |
| Storage Temperature | -40～125℃ |
| Electrical Characteristics | |
| Supply Voltage | 12VDC（9～30V） |
| Communication Interface Protection | (2KV) surge voltage |
| Load Capacity | 128 transducer nodes |
| Output Mode | RS485 interface, MODBUS-RTU protocol |
| Insulation | 100MΩ @50V |
| Mechanical Characteristics | |
| Sensor Lifespan | 107 full-scale pressure cycles |
| Wetted Material | Gold-plated alumina ceramic |
| Seal Material | Fluororubber |
| Housing Material | 316L stainless steel (titanium alloy optional) |
| Cable Material | Polyurethane |
| Weight | Approximately 300 grams |
| Environmental Characteristics | |
| Vibration | 20 g
BT8006S Piezoresistive Osmometer 20~5000 Hz |
| Shock | 20 g 11 ms |
| Protection Rating | IP68 |
| Explosion-proof Rating | ExiaⅡC T6 |
| Air Filter Protection Rating | IP67 |
Ⅳ. Related Parameters
