Bubble Water Level Sensors

CS470 Bubble Water Level Sensor
The CS470 uses bubble-sensor technology to measure water level. It has two standard interfaces: SDI-12 and 4-20 mA. It has onboard intelligence that allows it to optimize the pumping of air when measuring, and needs no software for initial startup and settings since it has DIP switches for that. It features offset-drift compensation for consistent accuracy. The sensor is ideal for areas where submersed sensors can be damage due to corrosion, contamination, flood-related debris, lightning, or vandalism. Less-frequent attending is needed since it does not require a pressurized nitrogen tank.
Features
Maintenance-friendly
Optimized spur gear for reduced friction
Strong pump design
Existing tubes can be used.
Tube lengths up to 330 ft (100 m)
Measures water-level changes up to 1 mmin.
High-accuracy version available--CS471
Specifications
Accuracy: ±0.02 ft
Resolution: 0.003 ft 0.014 psi
Power Requirements: 10 to 30 Vdc
Typical MeasurementCommunication Current
1-min. Query Interval: 320 mAhrday
15-min. Query Interval: 25 mAhrday
Measurement Time: 1 minute
Outputs: SDI-12 (version 1.3) 1200 Baud, 4-20 mA, RS-484 (SDI-12 Protocol via RS-485 interface)
Measurement Range: 0 to 50 ft