The OTT CBS is a compact, accurate, and low power bubbler sensor for surface water level monitoring. The OTT CBS meets or exceeds USGS standards for accuracy, and will not drift over time. It features outputs for SDI-12 and 4...20 mA.

• Application: Surface water, Groundwater
• Measurement technology: Bubbler-in
• Product Highlights: Drift-free water level measurement - no pressure sensor or electronics in the water
• Measurement range: 0 to 15 m or 0 to 30 m
• Accuracy: ± 3 mm (high accuracy version); ± 5 mm (standard and 30 meter versions)
• Internal data logger: No
• Interface: SDI-12, RS-485 (using SDI-12), or 4 ...20 mA