The DB1 is a self-calibrating system that measures water level (or other liquids), such as measurement in channels and stilling wells. It detects level by measuring the pressure required to force nitrogen bubbles from a pair of submerged tubes. The orifices of the tubes are separated by a fixed vertical distance. The pressure line that is measured is determined by the datalogger, which opens and closes valves on the manifold assembly. A single pressure transducer measures each of the tubes, as well as the atmospheric pressure. This technique compensates for temperature effects and long-term drift in the transducer, producing a more accurate measurement.
Features
- Self-calibrating system
- Measures water level (or other liquids) in channels and stilling wells
- Three models: 0 to 5 psi, 0 to 15 psi, 0 to 30 psi
- Requires nitrogen tank and regulator
Specifications
- Accuracy: ±0.05% of Full Scale Range
- Temperature Range: -25° to +50°C
- Weight: 3.8 lb (1.7 kg)
- Dimensions: 5.5" x 4.0" x 4.8" (14.0 x 10.2 x 12.2 cm)
