OTT CBS Compact Bubbler Sensor

The OTT CBS Compact Bubbler Sensor is an accurate, compact, and easy-to-use bubbler sensor for surface water level monitoring.

Features

  • Meets and exceeds USGS guidelines for water level accuracy, and will not drift over time
  • 5 year expected life based on 1 minute intervals - no pump maintenance or lubrication required
  • Easy integration with NexSens data logging & telemetry products
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Overview
The OTT CBS Compact Bubbler Sensor with EPS 50 Bubble Chamber accurately measures surface water level for new or existing stream gauges. The instrument's compact design and low power consumption make it a great solution for solar charged applications. The sensor will not drift over time and does not require desiccant, eliminating the need for periodic site visits. At a 1 minute sampling interval, the CBS has a 5-year expected life before routine maintenance or lubrication is required.

Intelligent Pumping
The sensor features an intelligent pumping strategy that compares the previous measurement to the actual pressure at the current measurement. This optimizes pumping time and provides extremely high accuracy that meets and exceeds USGS guidelines of +/-0.01 ft accuracy. All calibration data is stored on the pressure cell, so field replacement can easily be accomplished as needed.

IoT-Compatible
The CBS features a plug-and-play interface to NexSens iSIC data loggers via SDI-12 digital output. Data collection options include direct-connect, landline phone, cellular, radio, Ethernet, WI-FI, and satellite telemetry. Each iSIC data logger simultaneously supports 8 analog inputs & 4 digital inputs for multi-sensor data logging capability. NexSens iChart Software is a Windows-based program for interfacing both locally (direct-connect) and remotely (through telemetry) to an iSIC data logger or network of data loggers.

  • Measuring Range: 0-50 ft (0-15 m)
  • Accuracy (Standard): +/-0.02 ft from 0 to 50 ft
  • Accuracy (High Accuracy): +/-0.01 ft from 0 to 15 ft
  • Resolution: 0.003 ft / 0.014 psi
  • Units: ft, psi, m, bar
  • Measuring Interval: 1 min to 24 hr
  • Maximum Rate of Level Change: 3 ft/min
  • Output: SDI-12 or 4-20mA
  • Power Supply: 10-30 VDC
  • Power Consumption: 15 min interval - 25 mAh/day; 1 min interval - 320 mAh/day
  • Compatible Tubing: 1/8", 2 mm or 4 mm ID
  • Temperature Range: -4 to 140 F (-20 to 60 C)
  • Dimensions: 6.5" x 8.1" x 4.6" (L x W x H)
  • Weight: 3.3 lbs.
Questions & Answers
Can I use my data logger? What about my PC?
The OTT Compact Bubbler Sensor features flexible integration. It connects to most data loggers via standard communication interfaces, SDI-12 or 4-20mA without requiring additional PC software.
Do I need a gas tank or desiccant?
No, the OTT Compact Bubbler Sensor optimizes the amount of air required to create a bubble-in pressure in the measurement tube using its internal piston pump. This intelligent pumping strategy reduces power consumption and eliminates the need for a gas tank or desiccant.
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OTT CBS Compact Bubbler Sensor
63.200.001.9.21
CBS standard accuracy bubbler for use with 2mm ID x 4mm OD tubing, 15m range
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OTT High Accuracy CBS
63.200.001.9.22
CBS high accuracy bubbler for use with 2mm ID x 4mm OD tubing, 15m range
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OTT Standard Accuracy CBS
63.200.001.9.24
CBS standard accuracy bubbler for use with 1/8" ID x 3/8" OD tubing, 15m range
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OTT High Accuracy CBS
63.200.001.9.25
CBS high accuracy bubbler for use with 1/8" ID x 3/8" OD tubing, 15m range
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OTT Standard Accuracy CBS
63.200.001.9.23
CBS standard accuracy bubbler for use with 2mm ID x 4mm OD tubing, 30m range
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OTT Standard Accuracy CBS
63.200.001.9.26
CBS standard accuracy bubbler for use with 1/8" ID x 3/8" OD tubing, 30m range
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