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Ground Water Monitoring 2017-05-02T16:36:28+00:00

Ground Water Monitoring

Pressure transducers and bubblers are commonly used to measure ground water level. We offer a wide variety of transducers that can be used in any environment, regardless of salinity, pollution, or other harsh environmental conditions. Key components of our water level measurement systems are dataloggers, sensors, and communications devices, which can be customized for each site.

Pressure Transducer or Vibrating Wire Piezometer

There are hundreds of transducer type sensors in the market today. There are a few things that set them apart. Most of these type of sensors use pressure on a thin wafer type sensor to measure the depth of water or even the pressure of the air. The other main sensor type is called a vibrating wire piezometer. This sensor uses a tiny wire and measures the vibration frequency of the wire when plucked by the sensor. The depth of the water changes the frequency of the wire.

Built-in Dataloggers

Some of the pressure sensors available have a built-in datalogger and these are often used in ground water monitoring due to their small form factor and ease of use and installation. We sell and support the Campbell Scientific CRS451/CRS456 water level and temperature dataloggers, and the Onset HOBO Water Level Loggers. These sensors have built-in dataloggers and are easy to deploy for measuring water levels in a variety of applications.

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Datalogger and Sensor Integration

By combining a pressure transducer or vibrating wire sensor with one of the Campbell Scientific dataloggers you can create a rugged and flexible water level monitoring system. The CR200X series, CR300, CR800 series, and CR1000 dataloggers can read many different types of outputs and offer reliable data collection and can be implemented as a control system or warning system in many types of applications.

There are many sensors available here are a few we recommend. Contact us if you need something else; we can generally match what you are seeking.

CRS451 / CRS456

CRS451 / CRS456

Acculevel

Acculevel

  1. HOBO MX2001 Water Level Logger – Includes datalogger, built-in barometric compensation, and Bluetooth readout
  2. Acculevel Pressure Transducer – No internal datalogger
  3. CS451 Pressure Transducer – No internal datalogger
  4. CRS451 Water Level & Temperature Recording Sensor – Includes internal datalogger
  5. Onset HOBO Water Level Loggers – Includes internal datalogger

Bubbler Sensor

The OTT-CBS is a compact bubbler that generally measures ground or surface water level, but can also measure any liquid level. This bubbler has an accuracy of ±0.02 ft. A Campbell Scientific datalogger controls the OTT-BS pump and calculates the measurements. The bubbler typically communicates with the datalogger via the SDI-12 protocol, which is supported by many dataloggers.

CS470 Benefits

  • Ideal for areas where submersed sensors can be damaged due to corrosion, contamination, flood-related debris, lightning, or vandalism
  • Compatible with most Campbell Scientific dataloggers
  • Easy to maintain
  • Robust pump design provides reliable operation
  • Consistent accuracy ensured by drift-free measurements and offset compensation using relative measurement
  • Purge function clears the measuring tube and the bubble chamber of contamination
  • Does not use pressurized nitrogen tank—requiring less frequent attendance
  • Existing tubes can be used
OTT-CBS Brochure

CS470 / CS471 Bubbler SensorOTT-CBS