|Question: In your product manuals, the wiring diagrams show to connect earth ground for best practice. What will happen if we do not connect earth ground?|
Answer: In most industral applications, transient voltages and currents are present and are often conducted along the wired power and signal paths. If this energy is conducted into the instrument, it could create measurement errors or shorten the useful life of the product. The manuals indicate how to apply earth ground to the device and the I/O so that an alternate path is available to shunt or steer this energy to earth ground where it can be safely dissipated away from the instrument. For more information on proper grounding techinques, please see our whitepaper entitled "Electrical Ground Rules"