OTT CBS Compact Bubbler System

The OTT CBS Compact Bubble Sensor is a compact, accurate, efficient, robust, and easy-to-use SDI-12 bubbler sensor for water level monitoring, which meets and exceeds USGS guidelines for accuracy. The CBS is low maintenance, with no desiccant required. A 5 year life is expected based on 1 minute intervals—no pump maintenance or lubrication required.

The OTT CBS is contained in a compact ABS plastic housing and all programming can be completed using DIP switches on the back of the unit; connect into existing platforms using 3/8” O.D. or 4mm O.D. measuring tube.

Perfect for remote applications that require low power, the CBS’s intelligent pumping strategy compares the previous measurement to the actual pressure at the current measurement, and optimizes the pumping time depending on the difference (i.e., small changes in level are measured with very short pump cycles), saving on critical battery power.

OTT CBS Specs:

• Measuring range: 0-50 ft (0-15 m)
• Standard accuracy: ±0.02 ft
• High accuracy version:
• 0-15 ft: ±0.01 ft
• 15-50 ft: ±0.065% of reading or ±0.02 ft, whichever is less
• Resolution: 0.003 ft / 0.014 psi
• Units: ft, psi, m, bar
• Measuring interval: 1 min to 24 hr
• Max rate of level change: 3 ft/min
• Output: SDI-12, 4-20 mA
• Power supply: 10-30 V DC
• Power consumption:
• 25 mAh/day @ 15 min. measurement intervals
• 320 mAh/day @ 1 min. measurement intervals
• Compatible tubing: 1/8 in., 2 mm or 4 mm ID
• Temperature range: -4 to 140°F (-20 to 60°C)
• Dimensions (L x W x H): 6.5 in. x 8.1 in. x 4.6 in.
• Weight: 3.3 lbs.
• Integrated purge function
• Overload protection