The Earthing Sensor is specifically designed for inline applications where the stray current is present, the twist-lock earthing sensor may provide the necessary diversion for stray electrons. The earthing sensor utilises a twist-lock sensor body, resin filled, with an earthing rod or solution ground directly through the middle, providing a connection point on the back end that can be wired to a common ground. Stray current or static is particularly common in plastic pipework and can create strange and unstable measurement readings, particularly for pH and ORP sensors. When insufficient earthing is available, the earthing sensor may be a good short term solution. It is of course best to locate the source of stray current and properly isolate and shield this from affecting the rest of the installation.
If you are experiencing unusual or unstable measurements please refer to our support documentation on dealing with ground loops.
The challenge A large gold mine situated in the Philippines needed to monitor cyanide levels at below 0.2ppm. They were using an expensive automated WAD analyser that was incapable of reliably measuring below 3ppm.