This product is no longer available and has been replaced by: LEVELVUEB10.
DB1 Double Bubbler Liquid Level Sensor
Services Available
Repair No
Calibration No
Free Support No


 The DB1 determined level by measuring the pressure required to force bubbles (nitrogen or air) from a pair of submerged tubes. The submerged tubes were separated by a known fixed vertical distance. A single pressure transducer measured each tube and the atmospheric pressure. This technique compensated for temperature effects and long-term drift in the transducer, producing a more accurate measurement. Accuracy was ±0.05% full scale range.



Accuracy ±0.05% of Full Scale Range
Temperature Range -25° to +50°C
Dimensions 14.0 x 10.2 x 12.2 cm (5.5 x 4.0 x 4.8 in.)
Weight 3.8 lb (1.7 kg)


Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.

Data Loggers

Product Compatible Note
21X (retired)
CR10 (retired)
CR1000 (retired)
CR10X (retired)
CR200X (retired)
CR206X (retired)
CR211X (retired)
CR216X (retired)
CR23X (retired)
CR295X (retired)
CR3000 (retired)
CR500 (retired)
CR5000 (retired)
CR510 (retired)
CR800 (retired)
CR850 (retired)
CR9000 (retired)
CR9000X (retired)

Additional Compatibility Information

Data Logger Considerations

One differential analog channel, one switched excitation output, and three control ports are required.

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