D-Opto Optical Dissolved Oxygen Sensors

D-OptoShutter System

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The D-Opto Shutter system has a self-monitoring on-board intelligence that ensures reliable operation of the sensor by covering the the optical window between sampling – opening only when a sample is taken.

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When bio-fouling is extreme, the D-Opto shutter protects the sensing window between measurements:

  • Prevents bio-fouling and deposits, sediments from accumulating
  • Protects the optical window from impact
  • For harsh environments
  • Fitted to the D-Opto Sensor – the shutter is a mechanical device attaches to the side of the D-Opto
  • Controlled by the same data logger attached to the D-Opto.
  • Simple to fit,
  • Straightforward integration with existing installations
  • Power consumption is very low
  • Self-monitoring on-board intelligence ensures reliability

The D-Opto Shutter is a mechanical shutter system designed attach to the side of the Zebra-Tech D-Opto optical dissolved oxygen probe. 

Between measurements the Shutter disc covers the sensor window to reduce the incidence of bio-fouling and deposits settling and developing. 

The Shutter itself incorporates a copper stud, which further discourages the growth of bio-fouling due to the toxic nature of copper. When a measurement is required, the Shutter disc is rotated away from the sensor window, allowing a representative sample of water to come into contact with the D-Opto sensor window. After the measurement has been made, the Shutter closes over the sensor window.

The D-Opto Shutter can be simply controlled by the same data logger that records the output signal from the D-Opto, provided it has a spare programmable control port. 

If the data logger control port is set low, the Shutter closes; when the control port is set high, the shutter opens.

The Shutter features a supervisory microprocessor, which constantly monitors the position of the shutter arm, protecting both the D-Opto and the Shutter in the event that debris becomes trapped between the D-Opto and the Shutter.

The Shutter has been designed to operate with minimal power consumption, making it ideal for long term remote deployments with a finite battery supply.