1. Overview
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The BT8006 universal digital water level gauge is an input-type water level measuring instrument with a stainless steel, fully sealed structure, which greatly improves the reliability of the whole machine and can be put into the water for a long time. Since the circuit uses low-power devices, the overall power consumption is very low, at about 4 mA at full speed. This feature is very useful in situations where battery power is required.
2. Features
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Ultra-Low Power Consumption: Operates at ~4 mA full speed, ideal for solar and battery-powered telemetry setups.
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High Stability & Accuracy: Up to ±0.05% F.S. accuracy with 0.1% F.S./year long-term stability.
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Industrial Grade Protection: IP68 waterproof rating, Exia ⅡC T6 explosion-proof compliance, reverse polarity protection, and 2 kV surge protection.
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Seamless Integration: RS485 interface with standard Modbus-RTU protocol, supporting up to 128 nodes on DCS/PLC networks.
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Condensation Defense: Optional unique atmospheric capillary air filter (IP67) to prevent internal condensation and clogging.
3. Technical Parameters
| Main performance indicators | |
| Range | 0～10、20、50、100mH2O |
| User-specified range, factory calibration | |
| Measurement Accuracy | 0.05％F.S（Optional），0.1％ F·S（typical） |
| Resolution | 0.005％F.S |
| Long-term stability | 0.1% F.S/year |
| Overload capability | 5X F.S |
| Temperature characteristics | |
| Zero temperature coefficient | 0.005％ F·S/℃ |
| F.S temperature coefficient | 0.005％ F·S/℃ |
| Compensation temp. | 0～50℃ |
| Operating temp. | -20～85℃ |
| Storage temp. | -40～125℃ |
| Electrical characteristics | |
| Supply voltage | 24VDC（9～30V） |
| Communication interface protection | (2KV) surge voltage |
| Load capacity | 128 transmitter nodes |
| Output method | RS485 interface, MODBUS-RTU protocol |
| Insulation | 100MΩ @50V |
| Mechanical properties | |
| Sensor life | 107 times full-scale pressure cycles |
| Material in contact with liquid | Alumina ceramic gold plating |
| Seal material | Fluororubber |
| Housing material | 316L Stainless Steel (optional titanium alloy) |
| Cable material | Polyammon |
| Weight | About 300 grams |
| Environmental characteristics | |
| Vibration | 20 g, 20~5000 Hz |
| Shock | 20g 11ms |
| Protection level | IP68 |
| Explosion-proof grade | Exia ⅡC T6 |
| Air filter protection rating | IP67 |
4. Applications
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Groundwater and surface water hydrology monitoring.
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Wastewater, sewage, and drinking water treatment plants.
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Marine and seawater level measurement.
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Industrial process control via DCS or PLC integration.
5. Overall Dimensions
6. Selection Guide
