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.

• Accurate—Meets and exceeds USGS guidelines for water level accuracy, and will not drift over time
• Low Maintenance—No desiccant required; 5 year life expected based on 1 minute intervals—no pump maintenance or lubrication required
• Easy-to-Start/Easy-to-Install—All programming can be completed using DIP switches; connect into existing platforms and 1/8' orifice tubes via included adapter
• Compact Size—Optimization of air volume required for measurement allows utilization of a small, but powerful spur gear motor that fits into a compact package— no compressed gas tank is required
• Low Power—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)

• Manual purge button easily accessed from the face of the unit, or purge function available via SDI-12 command
• SDI-12 or 4-20 mA Output
• Compatible with 12V or 24V applications
• Overload protection powers the unit off if pressure or current is too high
• No offset calibration required
• All calibration data is stored on the pressure cell so field replacement is easily accomplished

• 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