How to Maximise your sensor’s life

Here are a few simple steps you can take to ensure you get the most out of your GreensSpan Sensor

Sensible Site Installations

It is important to ensure that the installation of a sensor on site is suitable and considers some of the following factors:

  • The location of the sensor should be easily accessible, suitable for accurate readings and protected from external damage (from debris in the water etc.).
    pH & ORP electrodes should not be installed in locations where they will sit dry (electrodes deplete at a vastly accelerated rate when dry).
  • Turbidity sensors should not be set to wipe if they are dry as this could scratch the lens if there are any particles that have not been washed away.
  • Cables should be away from sharp objects that could cut through the sheath and should be easy to remove from their installation without having to apply excessive force (GreenSpan cables have a protective Kevlar line running through them to take the weight of the sensor but can still be stretched if too much force is applied).

Regular Calibrations

To maintain consistent and accurate measurements on your GreenSpan sensors, regular calibrations are encouraged.

  • Field Calibrations are a suitable method for a quick 2-point calibration of a sensor to remove any minor offsets that may have developed.
  • For analog sensors where there are no calibration utilities (except the PS1000/PS7000), offsets and multipliers may, instead, be applied on an external logger (if in use).
  • Factory Calibrations are the best way to maintain the most accurate readings. The GreenSpan factory is able to use advanced in-house calibration software to complete multi-point calibrations including temperature dependent calibrations for the Pressure and EC parameters.

Accessories & Replacements

GreenSpan offers a wide range or accessories and replaceable components to allow users to get the most out of their sensors.

  • All pH & ORP electrodes are field replaceable and should be replaced when an electrode is no longer able to give the full span of readings, even after a calibration.
  • Reference protection rings and shrouds should be used on all electrodes to protect both the sensing end (pH bulb or ORP tip) and the ceramic reference wick.
  • Turbidity wipers are replaceable and should be replaced as soon as they have worn down to prevent damage to the lens.
  • Closed Vent Systems (CVS) must be used for all gauge pressure sensors to condition the atmospheric air and prevent moisture contamination.
  • Copper accessories are available for pressure transducers and electrodes to prevent bio-fouling.
  • Detachable Cable (DCC) caps should be used for DCC sensors with no cable attached.

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